./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix035.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix035.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/mix035.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix035.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 23:38:37,533 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 23:38:37,591 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 23:38:37,595 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 23:38:37,596 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 23:38:37,625 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 23:38:37,625 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 23:38:37,626 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 23:38:37,626 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 23:38:37,630 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 23:38:37,630 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 23:38:37,631 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 23:38:37,632 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 23:38:37,633 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 23:38:37,633 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 23:38:37,634 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 23:38:37,634 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 23:38:37,634 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 23:38:37,634 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 23:38:37,635 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 23:38:37,635 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 23:38:37,635 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 23:38:37,636 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 23:38:37,636 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 23:38:37,636 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 23:38:37,637 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 23:38:37,637 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 23:38:37,637 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 23:38:37,638 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 23:38:37,638 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 23:38:37,639 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 23:38:37,639 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 23:38:37,639 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:38:37,640 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 23:38:37,640 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 23:38:37,640 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 23:38:37,640 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 23:38:37,641 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 23:38:37,641 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 23:38:37,642 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 23:38:37,642 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 23:38:37,642 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 23:38:37,642 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 23:38:37,642 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 23:38:37,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 23:38:37,908 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 23:38:37,910 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 23:38:37,911 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 23:38:37,911 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 23:38:37,912 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix035.oepc.i [2024-06-27 23:38:39,099 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 23:38:39,332 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 23:38:39,333 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix035.oepc.i [2024-06-27 23:38:39,352 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38b7574fe/983c7320601546a4978e8406fff6b47e/FLAGa327f58be [2024-06-27 23:38:39,365 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38b7574fe/983c7320601546a4978e8406fff6b47e [2024-06-27 23:38:39,367 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 23:38:39,368 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 23:38:39,370 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix035.oepc.yml/witness.yml [2024-06-27 23:38:39,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 23:38:39,478 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 23:38:39,481 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 23:38:39,482 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 23:38:39,486 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 23:38:39,487 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:38:39" (1/2) ... [2024-06-27 23:38:39,488 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34afd85d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:38:39, skipping insertion in model container [2024-06-27 23:38:39,488 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:38:39" (1/2) ... [2024-06-27 23:38:39,490 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@648d6a5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:38:39, skipping insertion in model container [2024-06-27 23:38:39,492 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:38:39" (2/2) ... [2024-06-27 23:38:39,492 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34afd85d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:38:39, skipping insertion in model container [2024-06-27 23:38:39,493 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:38:39" (2/2) ... [2024-06-27 23:38:39,493 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 23:38:39,524 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 23:38:39,526 INFO L97 edCorrectnessWitness]: Location invariant before [L851-L851] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )a >= 0LL) && (0LL - (long long )__unbuffered_p2_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_buff0_thd3) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd3) + (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$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff1_thd3) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd3) + (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$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$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_p2_EAX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )a$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$r_buff0_thd3 >= 0LL) && (long long )a$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$r_buff1_thd3 >= 0LL) && (long long )a$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$r_buff0_thd3 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd3 + (long long )a$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$r_buff1_thd3 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd3 + (long long )a$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_p2_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_buff0_thd3 >= 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$r_buff0_thd1 - (long long )a$r_buff1_thd3 >= 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 23:38:39,526 INFO L97 edCorrectnessWitness]: Location invariant before [L848-L848] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )a >= 0LL) && (0LL - (long long )__unbuffered_p2_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_buff0_thd3) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd3) + (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$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff1_thd3) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd3) + (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$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$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_p2_EAX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )a$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$r_buff0_thd3 >= 0LL) && (long long )a$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$r_buff1_thd3 >= 0LL) && (long long )a$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$r_buff0_thd3 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd3 + (long long )a$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$r_buff1_thd3 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd3 + (long long )a$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_p2_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_buff0_thd3 >= 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$r_buff0_thd1 - (long long )a$r_buff1_thd3 >= 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 23:38:39,546 INFO L97 edCorrectnessWitness]: Location invariant before [L850-L850] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )a >= 0LL) && (0LL - (long long )__unbuffered_p2_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_buff0_thd3) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd3) + (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$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff1_thd3) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd3) + (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$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$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_p2_EAX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )a$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$r_buff0_thd3 >= 0LL) && (long long )a$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$r_buff1_thd3 >= 0LL) && (long long )a$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$r_buff0_thd3 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd3 + (long long )a$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$r_buff1_thd3 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd3 + (long long )a$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_p2_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_buff0_thd3 >= 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$r_buff0_thd1 - (long long )a$r_buff1_thd3 >= 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 23:38:39,547 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 23:38:39,547 INFO L106 edCorrectnessWitness]: ghost_update [L846-L846] multithreaded = 1; [2024-06-27 23:38:39,607 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 23:38:39,978 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:38:39,988 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 23:38:40,207 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:38:40,259 INFO L206 MainTranslator]: Completed translation [2024-06-27 23:38:40,259 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:38:40 WrapperNode [2024-06-27 23:38:40,260 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 23:38:40,261 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 23:38:40,261 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 23:38:40,261 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 23:38:40,268 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 11:38:40" (1/1) ... [2024-06-27 23:38:40,306 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 11:38:40" (1/1) ... [2024-06-27 23:38:40,378 INFO L138 Inliner]: procedures = 175, calls = 47, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 128 [2024-06-27 23:38:40,379 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 23:38:40,380 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 23:38:40,380 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 23:38:40,380 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 23:38:40,391 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 11:38:40" (1/1) ... [2024-06-27 23:38:40,391 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 11:38:40" (1/1) ... [2024-06-27 23:38:40,412 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 11:38:40" (1/1) ... [2024-06-27 23:38:40,448 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 23:38:40,448 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 11:38:40" (1/1) ... [2024-06-27 23:38:40,448 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 11:38:40" (1/1) ... [2024-06-27 23:38:40,471 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 11:38:40" (1/1) ... [2024-06-27 23:38:40,473 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 11:38:40" (1/1) ... [2024-06-27 23:38:40,481 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 11:38:40" (1/1) ... [2024-06-27 23:38:40,485 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 11:38:40" (1/1) ... [2024-06-27 23:38:40,494 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 23:38:40,495 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 23:38:40,495 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 23:38:40,495 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 23:38:40,496 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 11:38:40" (1/1) ... [2024-06-27 23:38:40,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:38:40,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 23:38:40,525 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 23:38:40,537 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 23:38:40,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 23:38:40,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 23:38:40,578 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 23:38:40,578 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 23:38:40,578 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 23:38:40,579 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 23:38:40,579 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 23:38:40,579 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 23:38:40,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 23:38:40,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 23:38:40,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 23:38:40,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 23:38:40,581 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 23:38:40,708 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 23:38:40,711 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 23:38:41,336 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 23:38:41,338 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 23:38:41,558 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 23:38:41,558 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 23:38:41,559 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:38:41 BoogieIcfgContainer [2024-06-27 23:38:41,559 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 23:38:41,561 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 23:38:41,562 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 23:38:41,564 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 23:38:41,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 11:38:39" (1/4) ... [2024-06-27 23:38:41,566 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d72e430 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:38:41, skipping insertion in model container [2024-06-27 23:38:41,566 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:38:39" (2/4) ... [2024-06-27 23:38:41,566 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d72e430 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:38:41, skipping insertion in model container [2024-06-27 23:38:41,566 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 11:38:40" (3/4) ... [2024-06-27 23:38:41,569 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d72e430 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:38:41, skipping insertion in model container [2024-06-27 23:38:41,569 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:38:41" (4/4) ... [2024-06-27 23:38:41,570 INFO L112 eAbstractionObserver]: Analyzing ICFG mix035.oepc.i [2024-06-27 23:38:41,586 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 23:38:41,586 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-27 23:38:41,586 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 23:38:41,657 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 23:38:41,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 42 transitions, 96 flow [2024-06-27 23:38:41,758 INFO L124 PetriNetUnfolderBase]: 0/39 cut-off events. [2024-06-27 23:38:41,758 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:38:41,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 39 events. 0/39 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. 0/36 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 23:38:41,760 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 42 transitions, 96 flow [2024-06-27 23:38:41,763 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 33 transitions, 75 flow [2024-06-27 23:38:41,805 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 23:38:41,824 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;@9810e7d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 23:38:41,824 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-27 23:38:41,838 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 23:38:41,839 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 23:38:41,839 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:38:41,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:41,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 23:38:41,840 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:38:41,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:41,847 INFO L85 PathProgramCache]: Analyzing trace with hash 380730443, now seen corresponding path program 1 times [2024-06-27 23:38:41,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:41,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125944755] [2024-06-27 23:38:41,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:41,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:42,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:44,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:44,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:44,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125944755] [2024-06-27 23:38:44,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125944755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:44,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:44,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 23:38:44,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780520544] [2024-06-27 23:38:44,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:44,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 23:38:44,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:44,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 23:38:44,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 23:38:44,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 42 [2024-06-27 23:38:44,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:44,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:44,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 42 [2024-06-27 23:38:44,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:44,927 INFO L124 PetriNetUnfolderBase]: 1286/2001 cut-off events. [2024-06-27 23:38:44,927 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-06-27 23:38:44,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3997 conditions, 2001 events. 1286/2001 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 9705 event pairs, 892 based on Foata normal form. 1/1938 useless extension candidates. Maximal degree in co-relation 3985. Up to 1921 conditions per place. [2024-06-27 23:38:44,944 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 32 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2024-06-27 23:38:44,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 43 transitions, 173 flow [2024-06-27 23:38:44,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 23:38:44,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 23:38:44,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-06-27 23:38:44,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-06-27 23:38:44,956 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 75 flow. Second operand 3 states and 78 transitions. [2024-06-27 23:38:44,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 43 transitions, 173 flow [2024-06-27 23:38:44,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 43 transitions, 168 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 23:38:44,961 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 102 flow [2024-06-27 23:38:44,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2024-06-27 23:38:44,966 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 0 predicate places. [2024-06-27 23:38:44,966 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 102 flow [2024-06-27 23:38:44,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:44,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:44,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:44,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 23:38:44,967 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:38:44,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:44,968 INFO L85 PathProgramCache]: Analyzing trace with hash 810521078, now seen corresponding path program 1 times [2024-06-27 23:38:44,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:44,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969200451] [2024-06-27 23:38:44,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:44,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:45,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:46,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:46,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:46,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969200451] [2024-06-27 23:38:46,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969200451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:46,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:46,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 23:38:46,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767823619] [2024-06-27 23:38:46,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:46,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 23:38:46,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:46,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 23:38:46,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 23:38:46,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 42 [2024-06-27 23:38:46,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:46,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:46,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 42 [2024-06-27 23:38:46,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:46,900 INFO L124 PetriNetUnfolderBase]: 1280/2000 cut-off events. [2024-06-27 23:38:46,900 INFO L125 PetriNetUnfolderBase]: For 384/384 co-relation queries the response was YES. [2024-06-27 23:38:46,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4521 conditions, 2000 events. 1280/2000 cut-off events. For 384/384 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 9691 event pairs, 750 based on Foata normal form. 3/1972 useless extension candidates. Maximal degree in co-relation 4509. Up to 1897 conditions per place. [2024-06-27 23:38:46,914 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 39 selfloop transitions, 7 changer transitions 0/53 dead transitions. [2024-06-27 23:38:46,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 53 transitions, 240 flow [2024-06-27 23:38:46,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 23:38:46,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 23:38:46,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2024-06-27 23:38:46,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6011904761904762 [2024-06-27 23:38:46,918 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 102 flow. Second operand 4 states and 101 transitions. [2024-06-27 23:38:46,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 53 transitions, 240 flow [2024-06-27 23:38:46,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 23:38:46,921 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 138 flow [2024-06-27 23:38:46,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2024-06-27 23:38:46,923 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 3 predicate places. [2024-06-27 23:38:46,923 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 138 flow [2024-06-27 23:38:46,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:46,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:46,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:46,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 23:38:46,927 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:38:46,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:46,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1521713301, now seen corresponding path program 1 times [2024-06-27 23:38:46,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:46,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761811782] [2024-06-27 23:38:46,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:46,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:46,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:49,742 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 23:38:49,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:49,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761811782] [2024-06-27 23:38:49,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761811782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:49,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:49,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:38:49,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827111362] [2024-06-27 23:38:49,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:49,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:38:49,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:49,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:38:49,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:38:49,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-06-27 23:38:49,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 138 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:49,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:49,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-06-27 23:38:49,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:50,432 INFO L124 PetriNetUnfolderBase]: 1552/2399 cut-off events. [2024-06-27 23:38:50,432 INFO L125 PetriNetUnfolderBase]: For 1253/1253 co-relation queries the response was YES. [2024-06-27 23:38:50,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6001 conditions, 2399 events. 1552/2399 cut-off events. For 1253/1253 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 11700 event pairs, 697 based on Foata normal form. 3/2365 useless extension candidates. Maximal degree in co-relation 5987. Up to 2262 conditions per place. [2024-06-27 23:38:50,448 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 54 selfloop transitions, 13 changer transitions 0/73 dead transitions. [2024-06-27 23:38:50,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 73 transitions, 374 flow [2024-06-27 23:38:50,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:38:50,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:38:50,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-27 23:38:50,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5634920634920635 [2024-06-27 23:38:50,454 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 138 flow. Second operand 6 states and 142 transitions. [2024-06-27 23:38:50,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 73 transitions, 374 flow [2024-06-27 23:38:50,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 73 transitions, 354 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 23:38:50,458 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 196 flow [2024-06-27 23:38:50,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=196, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2024-06-27 23:38:50,460 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 8 predicate places. [2024-06-27 23:38:50,460 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 196 flow [2024-06-27 23:38:50,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:50,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:50,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:50,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 23:38:50,461 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:38:50,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:50,462 INFO L85 PathProgramCache]: Analyzing trace with hash -927427979, now seen corresponding path program 1 times [2024-06-27 23:38:50,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:50,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921140639] [2024-06-27 23:38:50,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:50,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:53,629 INFO 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 23:38:53,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:53,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921140639] [2024-06-27 23:38:53,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921140639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:53,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:53,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:38:53,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628619576] [2024-06-27 23:38:53,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:53,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:38:53,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:53,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:38:53,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:38:53,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-06-27 23:38:53,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 196 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 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 23:38:53,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:53,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-06-27 23:38:53,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:54,400 INFO L124 PetriNetUnfolderBase]: 1543/2382 cut-off events. [2024-06-27 23:38:54,400 INFO L125 PetriNetUnfolderBase]: For 2475/2475 co-relation queries the response was YES. [2024-06-27 23:38:54,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6652 conditions, 2382 events. 1543/2382 cut-off events. For 2475/2475 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 11548 event pairs, 534 based on Foata normal form. 6/2351 useless extension candidates. Maximal degree in co-relation 6636. Up to 2217 conditions per place. [2024-06-27 23:38:54,419 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 58 selfloop transitions, 15 changer transitions 0/79 dead transitions. [2024-06-27 23:38:54,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 79 transitions, 434 flow [2024-06-27 23:38:54,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:38:54,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:38:54,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-27 23:38:54,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54421768707483 [2024-06-27 23:38:54,422 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 196 flow. Second operand 7 states and 160 transitions. [2024-06-27 23:38:54,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 79 transitions, 434 flow [2024-06-27 23:38:54,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 79 transitions, 406 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 23:38:54,428 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 217 flow [2024-06-27 23:38:54,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=217, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-06-27 23:38:54,430 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 11 predicate places. [2024-06-27 23:38:54,430 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 217 flow [2024-06-27 23:38:54,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 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 23:38:54,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:54,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:54,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 23:38:54,431 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:38:54,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:54,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1592252480, now seen corresponding path program 1 times [2024-06-27 23:38:54,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:54,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471019573] [2024-06-27 23:38:54,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:54,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:54,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:56,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:56,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:56,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471019573] [2024-06-27 23:38:56,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471019573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:56,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:56,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:38:56,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180182789] [2024-06-27 23:38:56,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:56,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:38:56,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:56,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:38:56,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:38:56,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-27 23:38:56,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 217 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:56,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:56,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-27 23:38:56,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:56,983 INFO L124 PetriNetUnfolderBase]: 1533/2378 cut-off events. [2024-06-27 23:38:56,983 INFO L125 PetriNetUnfolderBase]: For 4100/4100 co-relation queries the response was YES. [2024-06-27 23:38:56,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7046 conditions, 2378 events. 1533/2378 cut-off events. For 4100/4100 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 11656 event pairs, 864 based on Foata normal form. 4/2358 useless extension candidates. Maximal degree in co-relation 7028. Up to 2260 conditions per place. [2024-06-27 23:38:57,003 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 47 selfloop transitions, 10 changer transitions 0/62 dead transitions. [2024-06-27 23:38:57,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 62 transitions, 386 flow [2024-06-27 23:38:57,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:38:57,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:38:57,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 98 transitions. [2024-06-27 23:38:57,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-27 23:38:57,005 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 217 flow. Second operand 5 states and 98 transitions. [2024-06-27 23:38:57,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 62 transitions, 386 flow [2024-06-27 23:38:57,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 62 transitions, 345 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 23:38:57,015 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 244 flow [2024-06-27 23:38:57,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=244, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2024-06-27 23:38:57,017 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 12 predicate places. [2024-06-27 23:38:57,017 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 244 flow [2024-06-27 23:38:57,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:57,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:57,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:57,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 23:38:57,019 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:38:57,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:57,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1370971323, now seen corresponding path program 1 times [2024-06-27 23:38:57,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:57,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465390777] [2024-06-27 23:38:57,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:57,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:57,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:59,067 INFO 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 23:38:59,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:59,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465390777] [2024-06-27 23:38:59,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465390777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:59,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:59,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:38:59,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317960899] [2024-06-27 23:38:59,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:59,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:38:59,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:59,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:38:59,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:38:59,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-27 23:38:59,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 244 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 23:38:59,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:59,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-27 23:38:59,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:00,017 INFO L124 PetriNetUnfolderBase]: 1592/2459 cut-off events. [2024-06-27 23:39:00,017 INFO L125 PetriNetUnfolderBase]: For 5480/5480 co-relation queries the response was YES. [2024-06-27 23:39:00,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7851 conditions, 2459 events. 1592/2459 cut-off events. For 5480/5480 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 12087 event pairs, 785 based on Foata normal form. 2/2432 useless extension candidates. Maximal degree in co-relation 7829. Up to 2281 conditions per place. [2024-06-27 23:39:00,039 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 63 selfloop transitions, 25 changer transitions 0/93 dead transitions. [2024-06-27 23:39:00,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 93 transitions, 615 flow [2024-06-27 23:39:00,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:39:00,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:39:00,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-06-27 23:39:00,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48299319727891155 [2024-06-27 23:39:00,041 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 244 flow. Second operand 7 states and 142 transitions. [2024-06-27 23:39:00,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 93 transitions, 615 flow [2024-06-27 23:39:00,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 93 transitions, 589 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-27 23:39:00,048 INFO L231 Difference]: Finished difference. Result has 63 places, 70 transitions, 429 flow [2024-06-27 23:39:00,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=429, PETRI_PLACES=63, PETRI_TRANSITIONS=70} [2024-06-27 23:39:00,051 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 20 predicate places. [2024-06-27 23:39:00,051 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 70 transitions, 429 flow [2024-06-27 23:39:00,051 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 23:39:00,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:00,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:00,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 23:39:00,052 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:39:00,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:00,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1484432009, now seen corresponding path program 2 times [2024-06-27 23:39:00,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:00,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870161015] [2024-06-27 23:39:00,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:00,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:00,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:01,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:01,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:01,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870161015] [2024-06-27 23:39:01,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870161015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:01,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:01,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:39:01,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024552928] [2024-06-27 23:39:01,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:01,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:39:01,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:01,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:39:01,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:39:02,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-27 23:39:02,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 70 transitions, 429 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 23:39:02,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:02,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-27 23:39:02,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:02,666 INFO L124 PetriNetUnfolderBase]: 1668/2586 cut-off events. [2024-06-27 23:39:02,667 INFO L125 PetriNetUnfolderBase]: For 8143/8143 co-relation queries the response was YES. [2024-06-27 23:39:02,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9353 conditions, 2586 events. 1668/2586 cut-off events. For 8143/8143 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 12777 event pairs, 824 based on Foata normal form. 6/2567 useless extension candidates. Maximal degree in co-relation 9326. Up to 2383 conditions per place. [2024-06-27 23:39:02,692 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 74 selfloop transitions, 29 changer transitions 0/108 dead transitions. [2024-06-27 23:39:02,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 108 transitions, 900 flow [2024-06-27 23:39:02,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:39:02,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:39:02,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-06-27 23:39:02,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4801587301587302 [2024-06-27 23:39:02,694 INFO L175 Difference]: Start difference. First operand has 63 places, 70 transitions, 429 flow. Second operand 6 states and 121 transitions. [2024-06-27 23:39:02,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 108 transitions, 900 flow [2024-06-27 23:39:02,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 108 transitions, 870 flow, removed 14 selfloop flow, removed 1 redundant places. [2024-06-27 23:39:02,704 INFO L231 Difference]: Finished difference. Result has 69 places, 88 transitions, 680 flow [2024-06-27 23:39:02,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=680, PETRI_PLACES=69, PETRI_TRANSITIONS=88} [2024-06-27 23:39:02,705 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 26 predicate places. [2024-06-27 23:39:02,705 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 88 transitions, 680 flow [2024-06-27 23:39:02,706 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 23:39:02,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:02,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:02,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 23:39:02,706 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:39:02,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:02,707 INFO L85 PathProgramCache]: Analyzing trace with hash -69056739, now seen corresponding path program 3 times [2024-06-27 23:39:02,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:02,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762859188] [2024-06-27 23:39:02,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:02,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:02,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:04,456 INFO 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 23:39:04,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:04,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762859188] [2024-06-27 23:39:04,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762859188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:04,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:04,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:39:04,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809245041] [2024-06-27 23:39:04,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:04,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:39:04,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:04,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:39:04,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:39:04,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-27 23:39:04,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 88 transitions, 680 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 23:39:04,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:04,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-27 23:39:04,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:05,126 INFO L124 PetriNetUnfolderBase]: 1652/2566 cut-off events. [2024-06-27 23:39:05,126 INFO L125 PetriNetUnfolderBase]: For 9692/9692 co-relation queries the response was YES. [2024-06-27 23:39:05,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9558 conditions, 2566 events. 1652/2566 cut-off events. For 9692/9692 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 12648 event pairs, 820 based on Foata normal form. 6/2548 useless extension candidates. Maximal degree in co-relation 9527. Up to 2416 conditions per place. [2024-06-27 23:39:05,143 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 83 selfloop transitions, 16 changer transitions 0/104 dead transitions. [2024-06-27 23:39:05,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 104 transitions, 932 flow [2024-06-27 23:39:05,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:39:05,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:39:05,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-27 23:39:05,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42517006802721086 [2024-06-27 23:39:05,145 INFO L175 Difference]: Start difference. First operand has 69 places, 88 transitions, 680 flow. Second operand 7 states and 125 transitions. [2024-06-27 23:39:05,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 104 transitions, 932 flow [2024-06-27 23:39:05,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 104 transitions, 881 flow, removed 24 selfloop flow, removed 1 redundant places. [2024-06-27 23:39:05,161 INFO L231 Difference]: Finished difference. Result has 75 places, 88 transitions, 672 flow [2024-06-27 23:39:05,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=672, PETRI_PLACES=75, PETRI_TRANSITIONS=88} [2024-06-27 23:39:05,162 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 32 predicate places. [2024-06-27 23:39:05,162 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 88 transitions, 672 flow [2024-06-27 23:39:05,162 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 23:39:05,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:05,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:05,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 23:39:05,163 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:39:05,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:05,163 INFO L85 PathProgramCache]: Analyzing trace with hash -234600913, now seen corresponding path program 1 times [2024-06-27 23:39:05,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:05,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056882642] [2024-06-27 23:39:05,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:05,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:05,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:07,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:07,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:07,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056882642] [2024-06-27 23:39:07,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056882642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:07,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:07,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:39:07,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326963772] [2024-06-27 23:39:07,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:07,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:39:07,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:07,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:39:07,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:39:07,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-27 23:39:07,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 88 transitions, 672 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 23:39:07,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:07,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-27 23:39:07,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:08,186 INFO L124 PetriNetUnfolderBase]: 1802/2813 cut-off events. [2024-06-27 23:39:08,186 INFO L125 PetriNetUnfolderBase]: For 11886/11893 co-relation queries the response was YES. [2024-06-27 23:39:08,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10705 conditions, 2813 events. 1802/2813 cut-off events. For 11886/11893 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 14081 event pairs, 692 based on Foata normal form. 10/2803 useless extension candidates. Maximal degree in co-relation 10671. Up to 2466 conditions per place. [2024-06-27 23:39:08,208 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 99 selfloop transitions, 42 changer transitions 0/146 dead transitions. [2024-06-27 23:39:08,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 146 transitions, 1238 flow [2024-06-27 23:39:08,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:39:08,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:39:08,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-27 23:39:08,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-27 23:39:08,211 INFO L175 Difference]: Start difference. First operand has 75 places, 88 transitions, 672 flow. Second operand 10 states and 196 transitions. [2024-06-27 23:39:08,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 146 transitions, 1238 flow [2024-06-27 23:39:08,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 146 transitions, 1190 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 23:39:08,233 INFO L231 Difference]: Finished difference. Result has 83 places, 109 transitions, 900 flow [2024-06-27 23:39:08,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=624, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=900, PETRI_PLACES=83, PETRI_TRANSITIONS=109} [2024-06-27 23:39:08,235 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 40 predicate places. [2024-06-27 23:39:08,235 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 109 transitions, 900 flow [2024-06-27 23:39:08,235 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 23:39:08,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:08,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:08,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 23:39:08,236 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:39:08,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:08,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1515148585, now seen corresponding path program 2 times [2024-06-27 23:39:08,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:08,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562856370] [2024-06-27 23:39:08,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:08,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:10,401 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 23:39:10,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:10,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562856370] [2024-06-27 23:39:10,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562856370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:10,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:10,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:39:10,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245954351] [2024-06-27 23:39:10,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:10,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:39:10,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:10,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:39:10,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:39:10,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-27 23:39:10,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 109 transitions, 900 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 23:39:10,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:10,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-27 23:39:10,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:11,356 INFO L124 PetriNetUnfolderBase]: 1846/2881 cut-off events. [2024-06-27 23:39:11,356 INFO L125 PetriNetUnfolderBase]: For 16202/16215 co-relation queries the response was YES. [2024-06-27 23:39:11,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12534 conditions, 2881 events. 1846/2881 cut-off events. For 16202/16215 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 14482 event pairs, 560 based on Foata normal form. 15/2878 useless extension candidates. Maximal degree in co-relation 12497. Up to 2621 conditions per place. [2024-06-27 23:39:11,377 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 102 selfloop transitions, 43 changer transitions 0/150 dead transitions. [2024-06-27 23:39:11,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 150 transitions, 1435 flow [2024-06-27 23:39:11,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:39:11,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:39:11,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 146 transitions. [2024-06-27 23:39:11,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965986394557823 [2024-06-27 23:39:11,380 INFO L175 Difference]: Start difference. First operand has 83 places, 109 transitions, 900 flow. Second operand 7 states and 146 transitions. [2024-06-27 23:39:11,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 150 transitions, 1435 flow [2024-06-27 23:39:11,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 150 transitions, 1360 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-27 23:39:11,406 INFO L231 Difference]: Finished difference. Result has 89 places, 126 transitions, 1137 flow [2024-06-27 23:39:11,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1137, PETRI_PLACES=89, PETRI_TRANSITIONS=126} [2024-06-27 23:39:11,408 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 46 predicate places. [2024-06-27 23:39:11,409 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 126 transitions, 1137 flow [2024-06-27 23:39:11,409 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 23:39:11,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:11,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:11,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 23:39:11,409 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:39:11,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:11,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1525868695, now seen corresponding path program 3 times [2024-06-27 23:39:11,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:11,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639524084] [2024-06-27 23:39:11,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:11,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:11,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:13,503 INFO 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 23:39:13,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:13,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639524084] [2024-06-27 23:39:13,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639524084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:13,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:13,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:39:13,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317824433] [2024-06-27 23:39:13,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:13,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:39:13,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:13,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:39:13,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:39:13,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-27 23:39:13,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 126 transitions, 1137 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 23:39:13,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:13,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-27 23:39:13,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:14,405 INFO L124 PetriNetUnfolderBase]: 1929/3000 cut-off events. [2024-06-27 23:39:14,406 INFO L125 PetriNetUnfolderBase]: For 20542/20552 co-relation queries the response was YES. [2024-06-27 23:39:14,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13952 conditions, 3000 events. 1929/3000 cut-off events. For 20542/20552 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 15059 event pairs, 519 based on Foata normal form. 12/2992 useless extension candidates. Maximal degree in co-relation 13912. Up to 2359 conditions per place. [2024-06-27 23:39:14,431 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 79 selfloop transitions, 84 changer transitions 0/168 dead transitions. [2024-06-27 23:39:14,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 168 transitions, 1767 flow [2024-06-27 23:39:14,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:39:14,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:39:14,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-06-27 23:39:14,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5272108843537415 [2024-06-27 23:39:14,433 INFO L175 Difference]: Start difference. First operand has 89 places, 126 transitions, 1137 flow. Second operand 7 states and 155 transitions. [2024-06-27 23:39:14,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 168 transitions, 1767 flow [2024-06-27 23:39:14,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 168 transitions, 1702 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-06-27 23:39:14,464 INFO L231 Difference]: Finished difference. Result has 96 places, 139 transitions, 1482 flow [2024-06-27 23:39:14,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1072, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1482, PETRI_PLACES=96, PETRI_TRANSITIONS=139} [2024-06-27 23:39:14,465 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 53 predicate places. [2024-06-27 23:39:14,466 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 139 transitions, 1482 flow [2024-06-27 23:39:14,466 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 23:39:14,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:14,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:14,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 23:39:14,466 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:39:14,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:14,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1227128861, now seen corresponding path program 4 times [2024-06-27 23:39:14,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:14,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020767471] [2024-06-27 23:39:14,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:14,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:14,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:16,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:16,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:16,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020767471] [2024-06-27 23:39:16,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020767471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:16,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:16,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:39:16,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226167130] [2024-06-27 23:39:16,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:16,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:39:16,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:16,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:39:16,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:39:16,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-27 23:39:16,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 139 transitions, 1482 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 23:39:16,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:16,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-27 23:39:16,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:17,266 INFO L124 PetriNetUnfolderBase]: 1949/3028 cut-off events. [2024-06-27 23:39:17,266 INFO L125 PetriNetUnfolderBase]: For 29328/29328 co-relation queries the response was YES. [2024-06-27 23:39:17,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15869 conditions, 3028 events. 1949/3028 cut-off events. For 29328/29328 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 15265 event pairs, 819 based on Foata normal form. 3/3007 useless extension candidates. Maximal degree in co-relation 15826. Up to 2825 conditions per place. [2024-06-27 23:39:17,285 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 138 selfloop transitions, 34 changer transitions 0/177 dead transitions. [2024-06-27 23:39:17,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 177 transitions, 2156 flow [2024-06-27 23:39:17,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:39:17,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:39:17,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-27 23:39:17,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-27 23:39:17,287 INFO L175 Difference]: Start difference. First operand has 96 places, 139 transitions, 1482 flow. Second operand 7 states and 133 transitions. [2024-06-27 23:39:17,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 177 transitions, 2156 flow [2024-06-27 23:39:17,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 177 transitions, 2062 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-27 23:39:17,322 INFO L231 Difference]: Finished difference. Result has 101 places, 158 transitions, 1775 flow [2024-06-27 23:39:17,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1396, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1775, PETRI_PLACES=101, PETRI_TRANSITIONS=158} [2024-06-27 23:39:17,323 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 58 predicate places. [2024-06-27 23:39:17,323 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 158 transitions, 1775 flow [2024-06-27 23:39:17,324 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 23:39:17,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:17,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:17,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 23:39:17,324 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:39:17,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:17,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1227248831, now seen corresponding path program 5 times [2024-06-27 23:39:17,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:17,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944868362] [2024-06-27 23:39:17,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:17,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:17,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:19,251 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 23:39:19,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:19,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944868362] [2024-06-27 23:39:19,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944868362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:19,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:19,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:39:19,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441235059] [2024-06-27 23:39:19,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:19,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:39:19,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:19,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:39:19,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:39:19,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:39:19,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 158 transitions, 1775 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:19,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:19,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:39:19,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:20,264 INFO L124 PetriNetUnfolderBase]: 2572/3920 cut-off events. [2024-06-27 23:39:20,264 INFO L125 PetriNetUnfolderBase]: For 40484/40484 co-relation queries the response was YES. [2024-06-27 23:39:20,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20595 conditions, 3920 events. 2572/3920 cut-off events. For 40484/40484 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 19403 event pairs, 1042 based on Foata normal form. 3/3900 useless extension candidates. Maximal degree in co-relation 20549. Up to 3570 conditions per place. [2024-06-27 23:39:20,295 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 163 selfloop transitions, 55 changer transitions 0/222 dead transitions. [2024-06-27 23:39:20,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 222 transitions, 2858 flow [2024-06-27 23:39:20,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:39:20,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:39:20,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-27 23:39:20,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-27 23:39:20,297 INFO L175 Difference]: Start difference. First operand has 101 places, 158 transitions, 1775 flow. Second operand 8 states and 144 transitions. [2024-06-27 23:39:20,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 222 transitions, 2858 flow [2024-06-27 23:39:20,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 222 transitions, 2735 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-27 23:39:20,354 INFO L231 Difference]: Finished difference. Result has 107 places, 192 transitions, 2292 flow [2024-06-27 23:39:20,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1694, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2292, PETRI_PLACES=107, PETRI_TRANSITIONS=192} [2024-06-27 23:39:20,355 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 64 predicate places. [2024-06-27 23:39:20,355 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 192 transitions, 2292 flow [2024-06-27 23:39:20,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:20,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:20,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:20,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 23:39:20,356 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:39:20,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:20,356 INFO L85 PathProgramCache]: Analyzing trace with hash -813853987, now seen corresponding path program 6 times [2024-06-27 23:39:20,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:20,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293844286] [2024-06-27 23:39:20,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:20,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:20,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:22,009 INFO 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 23:39:22,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:22,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293844286] [2024-06-27 23:39:22,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293844286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:22,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:22,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:39:22,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707620463] [2024-06-27 23:39:22,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:22,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:39:22,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:22,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:39:22,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:39:22,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-27 23:39:22,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 192 transitions, 2292 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 23:39:22,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:22,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-27 23:39:22,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:22,866 INFO L124 PetriNetUnfolderBase]: 2451/3740 cut-off events. [2024-06-27 23:39:22,866 INFO L125 PetriNetUnfolderBase]: For 49330/49358 co-relation queries the response was YES. [2024-06-27 23:39:22,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21626 conditions, 3740 events. 2451/3740 cut-off events. For 49330/49358 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 18965 event pairs, 903 based on Foata normal form. 33/3722 useless extension candidates. Maximal degree in co-relation 21577. Up to 3428 conditions per place. [2024-06-27 23:39:22,892 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 179 selfloop transitions, 32 changer transitions 0/220 dead transitions. [2024-06-27 23:39:22,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 220 transitions, 2940 flow [2024-06-27 23:39:22,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:39:22,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:39:22,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-27 23:39:22,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-27 23:39:22,894 INFO L175 Difference]: Start difference. First operand has 107 places, 192 transitions, 2292 flow. Second operand 7 states and 133 transitions. [2024-06-27 23:39:22,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 220 transitions, 2940 flow [2024-06-27 23:39:22,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 220 transitions, 2869 flow, removed 33 selfloop flow, removed 2 redundant places. [2024-06-27 23:39:22,967 INFO L231 Difference]: Finished difference. Result has 112 places, 198 transitions, 2417 flow [2024-06-27 23:39:22,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2221, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2417, PETRI_PLACES=112, PETRI_TRANSITIONS=198} [2024-06-27 23:39:22,968 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 69 predicate places. [2024-06-27 23:39:22,968 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 198 transitions, 2417 flow [2024-06-27 23:39:22,968 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 23:39:22,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:22,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:22,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 23:39:22,969 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:39:22,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:22,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1404626615, now seen corresponding path program 1 times [2024-06-27 23:39:22,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:22,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297774858] [2024-06-27 23:39:22,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:22,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:22,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:25,139 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 23:39:25,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:25,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297774858] [2024-06-27 23:39:25,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297774858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:25,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:25,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:39:25,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865800656] [2024-06-27 23:39:25,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:25,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:39:25,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:25,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:39:25,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:39:25,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:39:25,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 198 transitions, 2417 flow. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:25,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:25,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:39:25,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:26,156 INFO L124 PetriNetUnfolderBase]: 2583/3934 cut-off events. [2024-06-27 23:39:26,156 INFO L125 PetriNetUnfolderBase]: For 51388/51388 co-relation queries the response was YES. [2024-06-27 23:39:26,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22318 conditions, 3934 events. 2583/3934 cut-off events. For 51388/51388 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 19421 event pairs, 1043 based on Foata normal form. 4/3914 useless extension candidates. Maximal degree in co-relation 22267. Up to 3740 conditions per place. [2024-06-27 23:39:26,182 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 200 selfloop transitions, 18 changer transitions 0/222 dead transitions. [2024-06-27 23:39:26,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 222 transitions, 2990 flow [2024-06-27 23:39:26,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:39:26,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:39:26,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-27 23:39:26,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-27 23:39:26,185 INFO L175 Difference]: Start difference. First operand has 112 places, 198 transitions, 2417 flow. Second operand 8 states and 136 transitions. [2024-06-27 23:39:26,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 222 transitions, 2990 flow [2024-06-27 23:39:26,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 222 transitions, 2884 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-27 23:39:26,240 INFO L231 Difference]: Finished difference. Result has 116 places, 204 transitions, 2434 flow [2024-06-27 23:39:26,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2315, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2434, PETRI_PLACES=116, PETRI_TRANSITIONS=204} [2024-06-27 23:39:26,241 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 73 predicate places. [2024-06-27 23:39:26,241 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 204 transitions, 2434 flow [2024-06-27 23:39:26,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:26,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:26,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:26,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 23:39:26,242 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:39:26,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:26,242 INFO L85 PathProgramCache]: Analyzing trace with hash 875555837, now seen corresponding path program 1 times [2024-06-27 23:39:26,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:26,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450398848] [2024-06-27 23:39:26,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:26,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:26,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:27,997 INFO 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 23:39:28,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:28,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450398848] [2024-06-27 23:39:28,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450398848] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:28,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:28,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:39:28,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676369176] [2024-06-27 23:39:28,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:28,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:39:28,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:28,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:39:28,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:39:28,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-27 23:39:28,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 204 transitions, 2434 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:28,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:28,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-27 23:39:28,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:28,787 INFO L124 PetriNetUnfolderBase]: 2408/3741 cut-off events. [2024-06-27 23:39:28,787 INFO L125 PetriNetUnfolderBase]: For 55327/55391 co-relation queries the response was YES. [2024-06-27 23:39:28,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21795 conditions, 3741 events. 2408/3741 cut-off events. For 55327/55391 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 19053 event pairs, 1061 based on Foata normal form. 31/3755 useless extension candidates. Maximal degree in co-relation 21742. Up to 3505 conditions per place. [2024-06-27 23:39:28,811 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 184 selfloop transitions, 10 changer transitions 0/214 dead transitions. [2024-06-27 23:39:28,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 214 transitions, 2870 flow [2024-06-27 23:39:28,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:39:28,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:39:28,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2024-06-27 23:39:28,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44285714285714284 [2024-06-27 23:39:28,813 INFO L175 Difference]: Start difference. First operand has 116 places, 204 transitions, 2434 flow. Second operand 5 states and 93 transitions. [2024-06-27 23:39:28,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 214 transitions, 2870 flow [2024-06-27 23:39:28,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 214 transitions, 2807 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-27 23:39:28,863 INFO L231 Difference]: Finished difference. Result has 116 places, 207 transitions, 2425 flow [2024-06-27 23:39:28,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2371, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2425, PETRI_PLACES=116, PETRI_TRANSITIONS=207} [2024-06-27 23:39:28,864 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 73 predicate places. [2024-06-27 23:39:28,864 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 207 transitions, 2425 flow [2024-06-27 23:39:28,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:28,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:28,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:28,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 23:39:28,865 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:39:28,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:28,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1314160984, now seen corresponding path program 1 times [2024-06-27 23:39:28,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:28,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754488848] [2024-06-27 23:39:28,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:28,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:28,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:31,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:31,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:31,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754488848] [2024-06-27 23:39:31,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754488848] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:31,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:31,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:39:31,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425558732] [2024-06-27 23:39:31,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:31,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:39:31,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:31,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:39:31,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:39:31,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-27 23:39:31,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 207 transitions, 2425 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:31,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:31,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-27 23:39:31,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:32,731 INFO L124 PetriNetUnfolderBase]: 2513/3845 cut-off events. [2024-06-27 23:39:32,731 INFO L125 PetriNetUnfolderBase]: For 62405/62443 co-relation queries the response was YES. [2024-06-27 23:39:32,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23741 conditions, 3845 events. 2513/3845 cut-off events. For 62405/62443 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 19622 event pairs, 785 based on Foata normal form. 22/3840 useless extension candidates. Maximal degree in co-relation 23687. Up to 3317 conditions per place. [2024-06-27 23:39:32,757 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 168 selfloop transitions, 85 changer transitions 0/263 dead transitions. [2024-06-27 23:39:32,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 263 transitions, 3497 flow [2024-06-27 23:39:32,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:39:32,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:39:32,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 190 transitions. [2024-06-27 23:39:32,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026455026455027 [2024-06-27 23:39:32,759 INFO L175 Difference]: Start difference. First operand has 116 places, 207 transitions, 2425 flow. Second operand 9 states and 190 transitions. [2024-06-27 23:39:32,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 263 transitions, 3497 flow [2024-06-27 23:39:32,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 263 transitions, 3475 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 23:39:32,815 INFO L231 Difference]: Finished difference. Result has 123 places, 219 transitions, 2811 flow [2024-06-27 23:39:32,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2403, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2811, PETRI_PLACES=123, PETRI_TRANSITIONS=219} [2024-06-27 23:39:32,815 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 80 predicate places. [2024-06-27 23:39:32,816 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 219 transitions, 2811 flow [2024-06-27 23:39:32,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:32,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:32,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:32,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 23:39:32,816 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:39:32,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:32,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1650470916, now seen corresponding path program 2 times [2024-06-27 23:39:32,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:32,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494772442] [2024-06-27 23:39:32,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:32,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:32,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:35,575 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 23:39:35,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:35,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494772442] [2024-06-27 23:39:35,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494772442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:35,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:35,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:39:35,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699521657] [2024-06-27 23:39:35,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:35,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:39:35,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:35,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:39:35,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:39:35,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-27 23:39:35,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 219 transitions, 2811 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:35,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:35,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-27 23:39:35,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:36,740 INFO L124 PetriNetUnfolderBase]: 2492/3814 cut-off events. [2024-06-27 23:39:36,740 INFO L125 PetriNetUnfolderBase]: For 69080/69113 co-relation queries the response was YES. [2024-06-27 23:39:36,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24271 conditions, 3814 events. 2492/3814 cut-off events. For 69080/69113 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 19433 event pairs, 812 based on Foata normal form. 21/3807 useless extension candidates. Maximal degree in co-relation 24214. Up to 3384 conditions per place. [2024-06-27 23:39:36,762 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 172 selfloop transitions, 71 changer transitions 0/253 dead transitions. [2024-06-27 23:39:36,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 253 transitions, 3561 flow [2024-06-27 23:39:36,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:39:36,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:39:36,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 165 transitions. [2024-06-27 23:39:36,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49107142857142855 [2024-06-27 23:39:36,763 INFO L175 Difference]: Start difference. First operand has 123 places, 219 transitions, 2811 flow. Second operand 8 states and 165 transitions. [2024-06-27 23:39:36,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 253 transitions, 3561 flow [2024-06-27 23:39:36,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 253 transitions, 3418 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-27 23:39:36,823 INFO L231 Difference]: Finished difference. Result has 126 places, 219 transitions, 2834 flow [2024-06-27 23:39:36,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2668, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2834, PETRI_PLACES=126, PETRI_TRANSITIONS=219} [2024-06-27 23:39:36,824 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 83 predicate places. [2024-06-27 23:39:36,824 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 219 transitions, 2834 flow [2024-06-27 23:39:36,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:36,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:36,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:36,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 23:39:36,824 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:39:36,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:36,825 INFO L85 PathProgramCache]: Analyzing trace with hash 275179156, now seen corresponding path program 3 times [2024-06-27 23:39:36,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:36,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236657179] [2024-06-27 23:39:36,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:36,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:36,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:39,480 INFO 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 23:39:39,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:39,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236657179] [2024-06-27 23:39:39,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236657179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:39,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:39,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:39:39,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604151740] [2024-06-27 23:39:39,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:39,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:39:39,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:39,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:39:39,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:39:39,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-27 23:39:39,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 219 transitions, 2834 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:39,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:39,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-27 23:39:39,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:40,592 INFO L124 PetriNetUnfolderBase]: 2516/3856 cut-off events. [2024-06-27 23:39:40,593 INFO L125 PetriNetUnfolderBase]: For 74319/74355 co-relation queries the response was YES. [2024-06-27 23:39:40,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24666 conditions, 3856 events. 2516/3856 cut-off events. For 74319/74355 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 19814 event pairs, 756 based on Foata normal form. 49/3873 useless extension candidates. Maximal degree in co-relation 24608. Up to 3156 conditions per place. [2024-06-27 23:39:40,622 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 134 selfloop transitions, 127 changer transitions 0/271 dead transitions. [2024-06-27 23:39:40,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 271 transitions, 3920 flow [2024-06-27 23:39:40,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:39:40,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:39:40,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 170 transitions. [2024-06-27 23:39:40,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059523809523809 [2024-06-27 23:39:40,625 INFO L175 Difference]: Start difference. First operand has 126 places, 219 transitions, 2834 flow. Second operand 8 states and 170 transitions. [2024-06-27 23:39:40,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 271 transitions, 3920 flow [2024-06-27 23:39:40,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 271 transitions, 3757 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 23:39:40,708 INFO L231 Difference]: Finished difference. Result has 128 places, 230 transitions, 3174 flow [2024-06-27 23:39:40,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2671, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3174, PETRI_PLACES=128, PETRI_TRANSITIONS=230} [2024-06-27 23:39:40,709 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 85 predicate places. [2024-06-27 23:39:40,709 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 230 transitions, 3174 flow [2024-06-27 23:39:40,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:40,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:40,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:40,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 23:39:40,710 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:39:40,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:40,710 INFO L85 PathProgramCache]: Analyzing trace with hash -57282452, now seen corresponding path program 1 times [2024-06-27 23:39:40,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:40,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461874765] [2024-06-27 23:39:40,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:40,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:40,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:43,135 INFO 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 23:39:43,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:43,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461874765] [2024-06-27 23:39:43,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461874765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:43,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:43,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:43,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316436077] [2024-06-27 23:39:43,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:43,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:43,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:43,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:43,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:43,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:39:43,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 230 transitions, 3174 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:43,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:43,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:39:43,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:44,294 INFO L124 PetriNetUnfolderBase]: 2671/4064 cut-off events. [2024-06-27 23:39:44,295 INFO L125 PetriNetUnfolderBase]: For 82532/82535 co-relation queries the response was YES. [2024-06-27 23:39:44,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25904 conditions, 4064 events. 2671/4064 cut-off events. For 82532/82535 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 20133 event pairs, 932 based on Foata normal form. 5/4068 useless extension candidates. Maximal degree in co-relation 25844. Up to 3720 conditions per place. [2024-06-27 23:39:44,328 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 201 selfloop transitions, 69 changer transitions 0/274 dead transitions. [2024-06-27 23:39:44,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 274 transitions, 4039 flow [2024-06-27 23:39:44,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:39:44,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:39:44,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-27 23:39:44,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45535714285714285 [2024-06-27 23:39:44,329 INFO L175 Difference]: Start difference. First operand has 128 places, 230 transitions, 3174 flow. Second operand 8 states and 153 transitions. [2024-06-27 23:39:44,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 274 transitions, 4039 flow [2024-06-27 23:39:44,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 274 transitions, 3825 flow, removed 69 selfloop flow, removed 4 redundant places. [2024-06-27 23:39:44,435 INFO L231 Difference]: Finished difference. Result has 134 places, 246 transitions, 3352 flow [2024-06-27 23:39:44,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2964, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3352, PETRI_PLACES=134, PETRI_TRANSITIONS=246} [2024-06-27 23:39:44,436 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 91 predicate places. [2024-06-27 23:39:44,436 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 246 transitions, 3352 flow [2024-06-27 23:39:44,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:44,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:44,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:44,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 23:39:44,437 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:39:44,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:44,437 INFO L85 PathProgramCache]: Analyzing trace with hash 547955576, now seen corresponding path program 2 times [2024-06-27 23:39:44,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:44,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189879325] [2024-06-27 23:39:44,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:44,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:44,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:46,154 INFO 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 23:39:46,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:46,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189879325] [2024-06-27 23:39:46,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189879325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:46,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:46,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:39:46,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168856025] [2024-06-27 23:39:46,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:46,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:39:46,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:46,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:39:46,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:39:46,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:39:46,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 246 transitions, 3352 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 23:39:46,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:46,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:39:46,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:47,142 INFO L124 PetriNetUnfolderBase]: 2680/4085 cut-off events. [2024-06-27 23:39:47,142 INFO L125 PetriNetUnfolderBase]: For 80475/80475 co-relation queries the response was YES. [2024-06-27 23:39:47,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26235 conditions, 4085 events. 2680/4085 cut-off events. For 80475/80475 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 20264 event pairs, 1025 based on Foata normal form. 2/4086 useless extension candidates. Maximal degree in co-relation 26172. Up to 3872 conditions per place. [2024-06-27 23:39:47,174 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 245 selfloop transitions, 26 changer transitions 0/275 dead transitions. [2024-06-27 23:39:47,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 275 transitions, 4110 flow [2024-06-27 23:39:47,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:39:47,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:39:47,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-27 23:39:47,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4387755102040816 [2024-06-27 23:39:47,175 INFO L175 Difference]: Start difference. First operand has 134 places, 246 transitions, 3352 flow. Second operand 7 states and 129 transitions. [2024-06-27 23:39:47,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 275 transitions, 4110 flow [2024-06-27 23:39:47,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 275 transitions, 3956 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 23:39:47,257 INFO L231 Difference]: Finished difference. Result has 137 places, 256 transitions, 3409 flow [2024-06-27 23:39:47,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3203, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3409, PETRI_PLACES=137, PETRI_TRANSITIONS=256} [2024-06-27 23:39:47,258 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 94 predicate places. [2024-06-27 23:39:47,258 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 256 transitions, 3409 flow [2024-06-27 23:39:47,258 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 23:39:47,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:47,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:47,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 23:39:47,259 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:39:47,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:47,259 INFO L85 PathProgramCache]: Analyzing trace with hash 586118806, now seen corresponding path program 4 times [2024-06-27 23:39:47,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:47,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434959844] [2024-06-27 23:39:47,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:47,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:47,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:49,095 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 23:39:49,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:49,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434959844] [2024-06-27 23:39:49,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434959844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:49,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:49,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:39:49,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564577568] [2024-06-27 23:39:49,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:49,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:39:49,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:49,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:39:49,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:39:49,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-27 23:39:49,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 256 transitions, 3409 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 23:39:49,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:49,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-27 23:39:49,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:50,122 INFO L124 PetriNetUnfolderBase]: 2527/3879 cut-off events. [2024-06-27 23:39:50,122 INFO L125 PetriNetUnfolderBase]: For 88248/88284 co-relation queries the response was YES. [2024-06-27 23:39:50,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26136 conditions, 3879 events. 2527/3879 cut-off events. For 88248/88284 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 19924 event pairs, 883 based on Foata normal form. 40/3886 useless extension candidates. Maximal degree in co-relation 26072. Up to 3510 conditions per place. [2024-06-27 23:39:50,154 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 249 selfloop transitions, 54 changer transitions 0/315 dead transitions. [2024-06-27 23:39:50,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 315 transitions, 4738 flow [2024-06-27 23:39:50,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:39:50,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:39:50,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-27 23:39:50,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-27 23:39:50,155 INFO L175 Difference]: Start difference. First operand has 137 places, 256 transitions, 3409 flow. Second operand 8 states and 154 transitions. [2024-06-27 23:39:50,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 315 transitions, 4738 flow [2024-06-27 23:39:50,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 315 transitions, 4684 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 23:39:50,246 INFO L231 Difference]: Finished difference. Result has 142 places, 286 transitions, 4039 flow [2024-06-27 23:39:50,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3355, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4039, PETRI_PLACES=142, PETRI_TRANSITIONS=286} [2024-06-27 23:39:50,246 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 99 predicate places. [2024-06-27 23:39:50,246 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 286 transitions, 4039 flow [2024-06-27 23:39:50,247 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 23:39:50,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:50,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:50,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 23:39:50,247 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:39:50,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:50,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1358128987, now seen corresponding path program 1 times [2024-06-27 23:39:50,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:50,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778616403] [2024-06-27 23:39:50,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:50,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:50,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:52,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:52,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:52,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778616403] [2024-06-27 23:39:52,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778616403] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:52,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:52,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:39:52,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710789568] [2024-06-27 23:39:52,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:52,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:39:52,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:52,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:39:52,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:39:52,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:39:52,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 286 transitions, 4039 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:52,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:52,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:39:52,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:53,070 INFO L124 PetriNetUnfolderBase]: 2753/4162 cut-off events. [2024-06-27 23:39:53,071 INFO L125 PetriNetUnfolderBase]: For 107989/108082 co-relation queries the response was YES. [2024-06-27 23:39:53,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28928 conditions, 4162 events. 2753/4162 cut-off events. For 107989/108082 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 20681 event pairs, 1133 based on Foata normal form. 64/4213 useless extension candidates. Maximal degree in co-relation 28861. Up to 3976 conditions per place. [2024-06-27 23:39:53,098 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 256 selfloop transitions, 13 changer transitions 0/297 dead transitions. [2024-06-27 23:39:53,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 297 transitions, 4631 flow [2024-06-27 23:39:53,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:39:53,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:39:53,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 102 transitions. [2024-06-27 23:39:53,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-27 23:39:53,099 INFO L175 Difference]: Start difference. First operand has 142 places, 286 transitions, 4039 flow. Second operand 6 states and 102 transitions. [2024-06-27 23:39:53,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 297 transitions, 4631 flow [2024-06-27 23:39:53,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 297 transitions, 4502 flow, removed 56 selfloop flow, removed 3 redundant places. [2024-06-27 23:39:53,210 INFO L231 Difference]: Finished difference. Result has 145 places, 289 transitions, 3974 flow [2024-06-27 23:39:53,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3910, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3974, PETRI_PLACES=145, PETRI_TRANSITIONS=289} [2024-06-27 23:39:53,211 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 102 predicate places. [2024-06-27 23:39:53,211 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 289 transitions, 3974 flow [2024-06-27 23:39:53,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:53,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:53,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:53,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 23:39:53,211 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:39:53,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:53,212 INFO L85 PathProgramCache]: Analyzing trace with hash 524576484, now seen corresponding path program 1 times [2024-06-27 23:39:53,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:53,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533575098] [2024-06-27 23:39:53,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:53,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:55,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:55,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:55,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533575098] [2024-06-27 23:39:55,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533575098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:55,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:55,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:39:55,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691081089] [2024-06-27 23:39:55,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:55,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:39:55,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:55,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:39:55,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:39:55,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-27 23:39:55,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 289 transitions, 3974 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:55,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:55,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-27 23:39:55,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:56,453 INFO L124 PetriNetUnfolderBase]: 2761/4244 cut-off events. [2024-06-27 23:39:56,453 INFO L125 PetriNetUnfolderBase]: For 120981/121086 co-relation queries the response was YES. [2024-06-27 23:39:56,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30912 conditions, 4244 events. 2761/4244 cut-off events. For 120981/121086 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 22473 event pairs, 784 based on Foata normal form. 45/4257 useless extension candidates. Maximal degree in co-relation 30842. Up to 3505 conditions per place. [2024-06-27 23:39:56,487 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 240 selfloop transitions, 92 changer transitions 0/345 dead transitions. [2024-06-27 23:39:56,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 345 transitions, 5190 flow [2024-06-27 23:39:56,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:39:56,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:39:56,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 212 transitions. [2024-06-27 23:39:56,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5047619047619047 [2024-06-27 23:39:56,489 INFO L175 Difference]: Start difference. First operand has 145 places, 289 transitions, 3974 flow. Second operand 10 states and 212 transitions. [2024-06-27 23:39:56,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 345 transitions, 5190 flow [2024-06-27 23:39:56,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 345 transitions, 5130 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-27 23:39:56,605 INFO L231 Difference]: Finished difference. Result has 152 places, 296 transitions, 4243 flow [2024-06-27 23:39:56,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3914, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4243, PETRI_PLACES=152, PETRI_TRANSITIONS=296} [2024-06-27 23:39:56,606 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 109 predicate places. [2024-06-27 23:39:56,606 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 296 transitions, 4243 flow [2024-06-27 23:39:56,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:56,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:56,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:56,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 23:39:56,607 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:39:56,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:56,607 INFO L85 PathProgramCache]: Analyzing trace with hash 524636934, now seen corresponding path program 2 times [2024-06-27 23:39:56,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:56,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993486005] [2024-06-27 23:39:56,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:56,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:56,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:58,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:58,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:58,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993486005] [2024-06-27 23:39:58,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993486005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:58,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:58,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:39:58,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837238091] [2024-06-27 23:39:58,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:58,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:39:58,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:58,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:39:58,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:39:58,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-27 23:39:58,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 296 transitions, 4243 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:58,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:58,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-27 23:39:58,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:59,991 INFO L124 PetriNetUnfolderBase]: 2769/4256 cut-off events. [2024-06-27 23:39:59,991 INFO L125 PetriNetUnfolderBase]: For 135857/135956 co-relation queries the response was YES. [2024-06-27 23:40:00,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32422 conditions, 4256 events. 2769/4256 cut-off events. For 135857/135956 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 22452 event pairs, 835 based on Foata normal form. 39/4263 useless extension candidates. Maximal degree in co-relation 32351. Up to 3677 conditions per place. [2024-06-27 23:40:00,032 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 238 selfloop transitions, 87 changer transitions 0/338 dead transitions. [2024-06-27 23:40:00,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 338 transitions, 5253 flow [2024-06-27 23:40:00,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:40:00,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:40:00,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 203 transitions. [2024-06-27 23:40:00,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-06-27 23:40:00,035 INFO L175 Difference]: Start difference. First operand has 152 places, 296 transitions, 4243 flow. Second operand 10 states and 203 transitions. [2024-06-27 23:40:00,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 338 transitions, 5253 flow [2024-06-27 23:40:00,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 338 transitions, 5076 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-27 23:40:00,191 INFO L231 Difference]: Finished difference. Result has 156 places, 298 transitions, 4297 flow [2024-06-27 23:40:00,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4072, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4297, PETRI_PLACES=156, PETRI_TRANSITIONS=298} [2024-06-27 23:40:00,192 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 113 predicate places. [2024-06-27 23:40:00,192 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 298 transitions, 4297 flow [2024-06-27 23:40:00,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:00,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:00,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:00,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 23:40:00,193 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:40:00,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:00,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1769263332, now seen corresponding path program 3 times [2024-06-27 23:40:00,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:00,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288207905] [2024-06-27 23:40:00,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:00,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:00,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:01,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:01,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:01,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288207905] [2024-06-27 23:40:01,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288207905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:01,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:01,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:40:01,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699320645] [2024-06-27 23:40:01,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:01,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:40:01,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:01,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:40:01,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:40:01,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 42 [2024-06-27 23:40:01,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 298 transitions, 4297 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 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 23:40:01,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:01,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 42 [2024-06-27 23:40:01,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:02,957 INFO L124 PetriNetUnfolderBase]: 2447/4067 cut-off events. [2024-06-27 23:40:02,958 INFO L125 PetriNetUnfolderBase]: For 144114/144426 co-relation queries the response was YES. [2024-06-27 23:40:02,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31575 conditions, 4067 events. 2447/4067 cut-off events. For 144114/144426 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 24510 event pairs, 528 based on Foata normal form. 110/4107 useless extension candidates. Maximal degree in co-relation 31502. Up to 2632 conditions per place. [2024-06-27 23:40:02,993 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 190 selfloop transitions, 95 changer transitions 0/349 dead transitions. [2024-06-27 23:40:02,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 349 transitions, 5381 flow [2024-06-27 23:40:02,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:40:02,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:40:02,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 220 transitions. [2024-06-27 23:40:02,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-06-27 23:40:02,994 INFO L175 Difference]: Start difference. First operand has 156 places, 298 transitions, 4297 flow. Second operand 10 states and 220 transitions. [2024-06-27 23:40:02,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 349 transitions, 5381 flow [2024-06-27 23:40:03,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 349 transitions, 5180 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 23:40:03,152 INFO L231 Difference]: Finished difference. Result has 161 places, 308 transitions, 4588 flow [2024-06-27 23:40:03,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4096, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4588, PETRI_PLACES=161, PETRI_TRANSITIONS=308} [2024-06-27 23:40:03,153 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 118 predicate places. [2024-06-27 23:40:03,153 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 308 transitions, 4588 flow [2024-06-27 23:40:03,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 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 23:40:03,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:03,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:03,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 23:40:03,153 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:40:03,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:03,154 INFO L85 PathProgramCache]: Analyzing trace with hash 372153112, now seen corresponding path program 4 times [2024-06-27 23:40:03,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:03,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857490725] [2024-06-27 23:40:03,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:03,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:03,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:06,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:06,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:06,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857490725] [2024-06-27 23:40:06,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857490725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:06,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:06,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:40:06,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608749886] [2024-06-27 23:40:06,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:06,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:40:06,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:06,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:40:06,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:40:06,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-27 23:40:06,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 308 transitions, 4588 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:06,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:06,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-27 23:40:06,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:08,039 INFO L124 PetriNetUnfolderBase]: 3272/5087 cut-off events. [2024-06-27 23:40:08,039 INFO L125 PetriNetUnfolderBase]: For 199418/199523 co-relation queries the response was YES. [2024-06-27 23:40:08,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41141 conditions, 5087 events. 3272/5087 cut-off events. For 199418/199523 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 28516 event pairs, 882 based on Foata normal form. 65/5119 useless extension candidates. Maximal degree in co-relation 41063. Up to 3764 conditions per place. [2024-06-27 23:40:08,105 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 260 selfloop transitions, 97 changer transitions 0/370 dead transitions. [2024-06-27 23:40:08,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 370 transitions, 6078 flow [2024-06-27 23:40:08,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:40:08,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:40:08,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 213 transitions. [2024-06-27 23:40:08,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5071428571428571 [2024-06-27 23:40:08,107 INFO L175 Difference]: Start difference. First operand has 161 places, 308 transitions, 4588 flow. Second operand 10 states and 213 transitions. [2024-06-27 23:40:08,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 370 transitions, 6078 flow [2024-06-27 23:40:08,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 370 transitions, 5988 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-27 23:40:08,340 INFO L231 Difference]: Finished difference. Result has 168 places, 313 transitions, 4882 flow [2024-06-27 23:40:08,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4512, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4882, PETRI_PLACES=168, PETRI_TRANSITIONS=313} [2024-06-27 23:40:08,341 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 125 predicate places. [2024-06-27 23:40:08,341 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 313 transitions, 4882 flow [2024-06-27 23:40:08,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:08,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:08,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:08,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 23:40:08,341 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:40:08,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:08,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1834935086, now seen corresponding path program 5 times [2024-06-27 23:40:08,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:08,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765353942] [2024-06-27 23:40:08,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:08,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:08,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:11,577 INFO 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 23:40:11,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:11,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765353942] [2024-06-27 23:40:11,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765353942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:11,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:11,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:40:11,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596533529] [2024-06-27 23:40:11,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:11,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:40:11,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:11,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:40:11,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:40:11,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-27 23:40:11,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 313 transitions, 4882 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:11,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:11,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-27 23:40:11,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:13,105 INFO L124 PetriNetUnfolderBase]: 3445/5379 cut-off events. [2024-06-27 23:40:13,105 INFO L125 PetriNetUnfolderBase]: For 224420/224519 co-relation queries the response was YES. [2024-06-27 23:40:13,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44005 conditions, 5379 events. 3445/5379 cut-off events. For 224420/224519 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 30748 event pairs, 1147 based on Foata normal form. 75/5420 useless extension candidates. Maximal degree in co-relation 43925. Up to 4516 conditions per place. [2024-06-27 23:40:13,163 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 268 selfloop transitions, 89 changer transitions 0/370 dead transitions. [2024-06-27 23:40:13,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 370 transitions, 6240 flow [2024-06-27 23:40:13,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:40:13,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:40:13,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 209 transitions. [2024-06-27 23:40:13,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4976190476190476 [2024-06-27 23:40:13,165 INFO L175 Difference]: Start difference. First operand has 168 places, 313 transitions, 4882 flow. Second operand 10 states and 209 transitions. [2024-06-27 23:40:13,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 370 transitions, 6240 flow [2024-06-27 23:40:13,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 370 transitions, 6123 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-27 23:40:13,456 INFO L231 Difference]: Finished difference. Result has 173 places, 316 transitions, 5069 flow [2024-06-27 23:40:13,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4779, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5069, PETRI_PLACES=173, PETRI_TRANSITIONS=316} [2024-06-27 23:40:13,457 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 130 predicate places. [2024-06-27 23:40:13,457 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 316 transitions, 5069 flow [2024-06-27 23:40:13,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:13,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:13,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:13,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 23:40:13,458 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:40:13,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:13,459 INFO L85 PathProgramCache]: Analyzing trace with hash 719364892, now seen corresponding path program 6 times [2024-06-27 23:40:13,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:13,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228198056] [2024-06-27 23:40:13,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:13,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:13,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:16,470 INFO 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 23:40:16,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:16,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228198056] [2024-06-27 23:40:16,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228198056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:16,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:16,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:40:16,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773127245] [2024-06-27 23:40:16,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:16,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:40:16,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:16,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:40:16,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:40:16,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-27 23:40:16,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 316 transitions, 5069 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:16,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:16,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-27 23:40:16,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:18,006 INFO L124 PetriNetUnfolderBase]: 3357/5246 cut-off events. [2024-06-27 23:40:18,006 INFO L125 PetriNetUnfolderBase]: For 220239/220333 co-relation queries the response was YES. [2024-06-27 23:40:18,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42356 conditions, 5246 events. 3357/5246 cut-off events. For 220239/220333 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 29898 event pairs, 1146 based on Foata normal form. 79/5289 useless extension candidates. Maximal degree in co-relation 42274. Up to 4423 conditions per place. [2024-06-27 23:40:18,054 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 274 selfloop transitions, 74 changer transitions 0/361 dead transitions. [2024-06-27 23:40:18,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 361 transitions, 6224 flow [2024-06-27 23:40:18,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:40:18,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:40:18,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 186 transitions. [2024-06-27 23:40:18,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2024-06-27 23:40:18,056 INFO L175 Difference]: Start difference. First operand has 173 places, 316 transitions, 5069 flow. Second operand 9 states and 186 transitions. [2024-06-27 23:40:18,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 361 transitions, 6224 flow [2024-06-27 23:40:18,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 361 transitions, 6013 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-27 23:40:18,359 INFO L231 Difference]: Finished difference. Result has 174 places, 316 transitions, 5017 flow [2024-06-27 23:40:18,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4858, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5017, PETRI_PLACES=174, PETRI_TRANSITIONS=316} [2024-06-27 23:40:18,360 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 131 predicate places. [2024-06-27 23:40:18,360 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 316 transitions, 5017 flow [2024-06-27 23:40:18,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:18,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:18,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:18,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 23:40:18,361 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:40:18,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:18,361 INFO L85 PathProgramCache]: Analyzing trace with hash 375015032, now seen corresponding path program 1 times [2024-06-27 23:40:18,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:18,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398327227] [2024-06-27 23:40:18,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:18,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:18,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:20,730 INFO 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 23:40:20,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:20,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398327227] [2024-06-27 23:40:20,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398327227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:20,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:20,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:40:20,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339828492] [2024-06-27 23:40:20,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:20,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:40:20,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:20,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:40:20,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:40:20,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:40:20,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 316 transitions, 5017 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 23:40:20,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:20,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:40:20,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:22,372 INFO L124 PetriNetUnfolderBase]: 3640/5644 cut-off events. [2024-06-27 23:40:22,373 INFO L125 PetriNetUnfolderBase]: For 202187/202190 co-relation queries the response was YES. [2024-06-27 23:40:22,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43331 conditions, 5644 events. 3640/5644 cut-off events. For 202187/202190 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 31566 event pairs, 1375 based on Foata normal form. 5/5642 useless extension candidates. Maximal degree in co-relation 43248. Up to 5246 conditions per place. [2024-06-27 23:40:22,424 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 289 selfloop transitions, 84 changer transitions 0/378 dead transitions. [2024-06-27 23:40:22,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 378 transitions, 6532 flow [2024-06-27 23:40:22,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:40:22,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:40:22,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-27 23:40:22,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-06-27 23:40:22,426 INFO L175 Difference]: Start difference. First operand has 174 places, 316 transitions, 5017 flow. Second operand 10 states and 192 transitions. [2024-06-27 23:40:22,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 378 transitions, 6532 flow [2024-06-27 23:40:22,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 378 transitions, 6280 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 23:40:22,699 INFO L231 Difference]: Finished difference. Result has 178 places, 334 transitions, 5390 flow [2024-06-27 23:40:22,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4804, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5390, PETRI_PLACES=178, PETRI_TRANSITIONS=334} [2024-06-27 23:40:22,699 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 135 predicate places. [2024-06-27 23:40:22,699 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 334 transitions, 5390 flow [2024-06-27 23:40:22,700 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 23:40:22,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:22,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:22,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 23:40:22,700 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:40:22,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:22,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1891225818, now seen corresponding path program 2 times [2024-06-27 23:40:22,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:22,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168975619] [2024-06-27 23:40:22,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:22,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:22,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:24,885 INFO 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 23:40:24,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:24,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168975619] [2024-06-27 23:40:24,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168975619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:24,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:24,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:40:24,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879259506] [2024-06-27 23:40:24,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:24,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:40:24,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:24,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:40:24,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:40:25,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:40:25,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 334 transitions, 5390 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 23:40:25,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:25,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:40:25,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:26,468 INFO L124 PetriNetUnfolderBase]: 3669/5683 cut-off events. [2024-06-27 23:40:26,468 INFO L125 PetriNetUnfolderBase]: For 208790/208798 co-relation queries the response was YES. [2024-06-27 23:40:26,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44337 conditions, 5683 events. 3669/5683 cut-off events. For 208790/208798 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 31630 event pairs, 1252 based on Foata normal form. 10/5688 useless extension candidates. Maximal degree in co-relation 44251. Up to 5364 conditions per place. [2024-06-27 23:40:26,526 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 308 selfloop transitions, 68 changer transitions 0/381 dead transitions. [2024-06-27 23:40:26,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 381 transitions, 6688 flow [2024-06-27 23:40:26,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:40:26,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:40:26,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-27 23:40:26,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43386243386243384 [2024-06-27 23:40:26,528 INFO L175 Difference]: Start difference. First operand has 178 places, 334 transitions, 5390 flow. Second operand 9 states and 164 transitions. [2024-06-27 23:40:26,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 381 transitions, 6688 flow [2024-06-27 23:40:26,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 381 transitions, 6430 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-27 23:40:26,838 INFO L231 Difference]: Finished difference. Result has 183 places, 353 transitions, 5757 flow [2024-06-27 23:40:26,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5186, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5757, PETRI_PLACES=183, PETRI_TRANSITIONS=353} [2024-06-27 23:40:26,838 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 140 predicate places. [2024-06-27 23:40:26,838 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 353 transitions, 5757 flow [2024-06-27 23:40:26,839 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 23:40:26,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:26,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:26,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 23:40:26,839 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:40:26,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:26,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1775939608, now seen corresponding path program 7 times [2024-06-27 23:40:26,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:26,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188745066] [2024-06-27 23:40:26,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:26,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:29,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:29,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:29,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188745066] [2024-06-27 23:40:29,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188745066] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:29,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:29,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:40:29,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425857434] [2024-06-27 23:40:29,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:29,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:40:29,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:29,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:40:29,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:40:30,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-27 23:40:30,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 353 transitions, 5757 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:30,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:30,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-27 23:40:30,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:31,503 INFO L124 PetriNetUnfolderBase]: 3450/5442 cut-off events. [2024-06-27 23:40:31,504 INFO L125 PetriNetUnfolderBase]: For 232089/232190 co-relation queries the response was YES. [2024-06-27 23:40:31,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43999 conditions, 5442 events. 3450/5442 cut-off events. For 232089/232190 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 31445 event pairs, 1038 based on Foata normal form. 57/5483 useless extension candidates. Maximal degree in co-relation 43910. Up to 4431 conditions per place. [2024-06-27 23:40:31,566 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 191 selfloop transitions, 191 changer transitions 0/400 dead transitions. [2024-06-27 23:40:31,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 400 transitions, 7139 flow [2024-06-27 23:40:31,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:40:31,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:40:31,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 192 transitions. [2024-06-27 23:40:31,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2024-06-27 23:40:31,569 INFO L175 Difference]: Start difference. First operand has 183 places, 353 transitions, 5757 flow. Second operand 9 states and 192 transitions. [2024-06-27 23:40:31,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 400 transitions, 7139 flow [2024-06-27 23:40:31,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 400 transitions, 6974 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-27 23:40:31,909 INFO L231 Difference]: Finished difference. Result has 186 places, 354 transitions, 6009 flow [2024-06-27 23:40:31,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5592, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6009, PETRI_PLACES=186, PETRI_TRANSITIONS=354} [2024-06-27 23:40:31,909 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 143 predicate places. [2024-06-27 23:40:31,909 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 354 transitions, 6009 flow [2024-06-27 23:40:31,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:31,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:31,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:31,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 23:40:31,910 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:40:31,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:31,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1775754910, now seen corresponding path program 1 times [2024-06-27 23:40:31,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:31,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598107656] [2024-06-27 23:40:31,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:31,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:31,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:34,579 INFO 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 23:40:34,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:34,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598107656] [2024-06-27 23:40:34,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598107656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:34,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:34,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:40:34,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884882447] [2024-06-27 23:40:34,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:34,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:40:34,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:34,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:40:34,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:40:34,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:40:34,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 354 transitions, 6009 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 23:40:34,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:34,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:40:34,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:36,212 INFO L124 PetriNetUnfolderBase]: 3778/5869 cut-off events. [2024-06-27 23:40:36,212 INFO L125 PetriNetUnfolderBase]: For 235270/235273 co-relation queries the response was YES. [2024-06-27 23:40:36,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46665 conditions, 5869 events. 3778/5869 cut-off events. For 235270/235273 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 33082 event pairs, 1364 based on Foata normal form. 6/5870 useless extension candidates. Maximal degree in co-relation 46577. Up to 5439 conditions per place. [2024-06-27 23:40:36,273 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 302 selfloop transitions, 82 changer transitions 0/389 dead transitions. [2024-06-27 23:40:36,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 389 transitions, 6977 flow [2024-06-27 23:40:36,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:40:36,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:40:36,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-27 23:40:36,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470899470899471 [2024-06-27 23:40:36,274 INFO L175 Difference]: Start difference. First operand has 186 places, 354 transitions, 6009 flow. Second operand 9 states and 169 transitions. [2024-06-27 23:40:36,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 389 transitions, 6977 flow [2024-06-27 23:40:36,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 389 transitions, 6590 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 23:40:36,641 INFO L231 Difference]: Finished difference. Result has 188 places, 356 transitions, 5831 flow [2024-06-27 23:40:36,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5622, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5831, PETRI_PLACES=188, PETRI_TRANSITIONS=356} [2024-06-27 23:40:36,641 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 145 predicate places. [2024-06-27 23:40:36,641 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 356 transitions, 5831 flow [2024-06-27 23:40:36,641 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 23:40:36,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:36,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:36,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 23:40:36,642 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:40:36,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:36,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1989680328, now seen corresponding path program 1 times [2024-06-27 23:40:36,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:36,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307458445] [2024-06-27 23:40:36,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:36,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:36,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:38,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:38,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:38,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307458445] [2024-06-27 23:40:38,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307458445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:38,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:38,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:40:38,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292541646] [2024-06-27 23:40:38,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:38,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:40:38,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:38,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:40:38,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:40:38,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-27 23:40:38,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 356 transitions, 5831 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:38,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:38,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-27 23:40:38,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:39,592 INFO L124 PetriNetUnfolderBase]: 3679/5751 cut-off events. [2024-06-27 23:40:39,592 INFO L125 PetriNetUnfolderBase]: For 241178/241242 co-relation queries the response was YES. [2024-06-27 23:40:39,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46034 conditions, 5751 events. 3679/5751 cut-off events. For 241178/241242 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 32646 event pairs, 1021 based on Foata normal form. 34/5770 useless extension candidates. Maximal degree in co-relation 45945. Up to 5304 conditions per place. [2024-06-27 23:40:39,651 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 304 selfloop transitions, 47 changer transitions 0/382 dead transitions. [2024-06-27 23:40:39,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 382 transitions, 6783 flow [2024-06-27 23:40:39,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:40:39,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:40:39,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-27 23:40:39,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46258503401360546 [2024-06-27 23:40:39,653 INFO L175 Difference]: Start difference. First operand has 188 places, 356 transitions, 5831 flow. Second operand 7 states and 136 transitions. [2024-06-27 23:40:39,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 382 transitions, 6783 flow [2024-06-27 23:40:39,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 382 transitions, 6596 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 23:40:39,985 INFO L231 Difference]: Finished difference. Result has 188 places, 363 transitions, 5842 flow [2024-06-27 23:40:39,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5644, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5842, PETRI_PLACES=188, PETRI_TRANSITIONS=363} [2024-06-27 23:40:39,985 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 145 predicate places. [2024-06-27 23:40:39,986 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 363 transitions, 5842 flow [2024-06-27 23:40:39,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:39,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:39,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:39,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 23:40:39,986 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:40:39,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:39,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1845137668, now seen corresponding path program 3 times [2024-06-27 23:40:39,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:39,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527993620] [2024-06-27 23:40:39,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:39,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:40,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:42,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:42,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:42,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527993620] [2024-06-27 23:40:42,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527993620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:42,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:42,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:40:42,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916415929] [2024-06-27 23:40:42,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:42,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:40:42,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:42,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:40:42,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:40:42,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:40:42,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 363 transitions, 5842 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 23:40:42,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:42,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:40:42,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:43,703 INFO L124 PetriNetUnfolderBase]: 3818/5902 cut-off events. [2024-06-27 23:40:43,703 INFO L125 PetriNetUnfolderBase]: For 253419/253419 co-relation queries the response was YES. [2024-06-27 23:40:43,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47429 conditions, 5902 events. 3818/5902 cut-off events. For 253419/253419 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 32952 event pairs, 1570 based on Foata normal form. 4/5901 useless extension candidates. Maximal degree in co-relation 47339. Up to 5602 conditions per place. [2024-06-27 23:40:43,753 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 331 selfloop transitions, 56 changer transitions 0/392 dead transitions. [2024-06-27 23:40:43,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 392 transitions, 6847 flow [2024-06-27 23:40:43,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:40:43,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:40:43,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-27 23:40:43,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-27 23:40:43,755 INFO L175 Difference]: Start difference. First operand has 188 places, 363 transitions, 5842 flow. Second operand 8 states and 144 transitions. [2024-06-27 23:40:43,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 392 transitions, 6847 flow [2024-06-27 23:40:44,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 392 transitions, 6708 flow, removed 51 selfloop flow, removed 3 redundant places. [2024-06-27 23:40:44,046 INFO L231 Difference]: Finished difference. Result has 194 places, 370 transitions, 6002 flow [2024-06-27 23:40:44,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5703, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6002, PETRI_PLACES=194, PETRI_TRANSITIONS=370} [2024-06-27 23:40:44,046 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 151 predicate places. [2024-06-27 23:40:44,047 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 370 transitions, 6002 flow [2024-06-27 23:40:44,047 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 23:40:44,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:44,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:44,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 23:40:44,047 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:40:44,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:44,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1729666760, now seen corresponding path program 2 times [2024-06-27 23:40:44,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:44,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340427793] [2024-06-27 23:40:44,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:44,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:44,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:46,237 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 23:40:46,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:46,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340427793] [2024-06-27 23:40:46,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340427793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:46,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:46,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:40:46,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634940239] [2024-06-27 23:40:46,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:46,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:40:46,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:46,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:40:46,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:40:46,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:40:46,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 370 transitions, 6002 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 23:40:46,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:46,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:40:46,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:47,676 INFO L124 PetriNetUnfolderBase]: 3846/5950 cut-off events. [2024-06-27 23:40:47,676 INFO L125 PetriNetUnfolderBase]: For 264320/264320 co-relation queries the response was YES. [2024-06-27 23:40:47,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48095 conditions, 5950 events. 3846/5950 cut-off events. For 264320/264320 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 33346 event pairs, 1567 based on Foata normal form. 4/5949 useless extension candidates. Maximal degree in co-relation 48002. Up to 5541 conditions per place. [2024-06-27 23:40:47,735 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 325 selfloop transitions, 69 changer transitions 0/399 dead transitions. [2024-06-27 23:40:47,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 399 transitions, 6955 flow [2024-06-27 23:40:47,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:40:47,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:40:47,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-27 23:40:47,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-06-27 23:40:47,737 INFO L175 Difference]: Start difference. First operand has 194 places, 370 transitions, 6002 flow. Second operand 8 states and 148 transitions. [2024-06-27 23:40:47,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 399 transitions, 6955 flow [2024-06-27 23:40:48,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 399 transitions, 6876 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-27 23:40:48,092 INFO L231 Difference]: Finished difference. Result has 198 places, 374 transitions, 6125 flow [2024-06-27 23:40:48,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5923, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6125, PETRI_PLACES=198, PETRI_TRANSITIONS=374} [2024-06-27 23:40:48,093 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 155 predicate places. [2024-06-27 23:40:48,093 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 374 transitions, 6125 flow [2024-06-27 23:40:48,094 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 23:40:48,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:48,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:48,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 23:40:48,094 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:40:48,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:48,095 INFO L85 PathProgramCache]: Analyzing trace with hash 972430246, now seen corresponding path program 2 times [2024-06-27 23:40:48,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:48,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740194643] [2024-06-27 23:40:48,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:48,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:48,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:49,631 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 23:40:49,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:49,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740194643] [2024-06-27 23:40:49,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740194643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:49,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:49,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:40:49,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363412296] [2024-06-27 23:40:49,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:49,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:40:49,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:49,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:40:49,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:40:49,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-27 23:40:49,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 374 transitions, 6125 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:49,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:49,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-27 23:40:49,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:50,842 INFO L124 PetriNetUnfolderBase]: 3698/5788 cut-off events. [2024-06-27 23:40:50,842 INFO L125 PetriNetUnfolderBase]: For 278589/278686 co-relation queries the response was YES. [2024-06-27 23:40:50,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47555 conditions, 5788 events. 3698/5788 cut-off events. For 278589/278686 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 33174 event pairs, 1582 based on Foata normal form. 69/5841 useless extension candidates. Maximal degree in co-relation 47461. Up to 5403 conditions per place. [2024-06-27 23:40:50,907 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 331 selfloop transitions, 31 changer transitions 0/395 dead transitions. [2024-06-27 23:40:50,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 395 transitions, 7088 flow [2024-06-27 23:40:50,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:40:50,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:40:50,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 114 transitions. [2024-06-27 23:40:50,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-27 23:40:50,908 INFO L175 Difference]: Start difference. First operand has 198 places, 374 transitions, 6125 flow. Second operand 6 states and 114 transitions. [2024-06-27 23:40:50,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 395 transitions, 7088 flow [2024-06-27 23:40:51,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 395 transitions, 6854 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-27 23:40:51,321 INFO L231 Difference]: Finished difference. Result has 196 places, 383 transitions, 6101 flow [2024-06-27 23:40:51,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5891, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6101, PETRI_PLACES=196, PETRI_TRANSITIONS=383} [2024-06-27 23:40:51,321 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 153 predicate places. [2024-06-27 23:40:51,322 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 383 transitions, 6101 flow [2024-06-27 23:40:51,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:51,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:51,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:51,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 23:40:51,322 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:40:51,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:51,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1217900566, now seen corresponding path program 3 times [2024-06-27 23:40:51,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:51,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093611678] [2024-06-27 23:40:51,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:51,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:51,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:53,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:53,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:53,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093611678] [2024-06-27 23:40:53,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093611678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:53,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:53,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:40:53,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005466977] [2024-06-27 23:40:53,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:53,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:40:53,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:53,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:40:53,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:40:53,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:40:53,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 383 transitions, 6101 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 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 23:40:53,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:53,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:40:53,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:54,637 INFO L124 PetriNetUnfolderBase]: 3890/6011 cut-off events. [2024-06-27 23:40:54,637 INFO L125 PetriNetUnfolderBase]: For 288401/288401 co-relation queries the response was YES. [2024-06-27 23:40:54,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49227 conditions, 6011 events. 3890/6011 cut-off events. For 288401/288401 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 33694 event pairs, 1589 based on Foata normal form. 4/6010 useless extension candidates. Maximal degree in co-relation 49134. Up to 5721 conditions per place. [2024-06-27 23:40:54,690 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 376 selfloop transitions, 32 changer transitions 0/413 dead transitions. [2024-06-27 23:40:54,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 413 transitions, 7148 flow [2024-06-27 23:40:54,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:40:54,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:40:54,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-27 23:40:54,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-27 23:40:54,692 INFO L175 Difference]: Start difference. First operand has 196 places, 383 transitions, 6101 flow. Second operand 8 states and 144 transitions. [2024-06-27 23:40:54,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 413 transitions, 7148 flow [2024-06-27 23:40:55,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 413 transitions, 7085 flow, removed 26 selfloop flow, removed 2 redundant places. [2024-06-27 23:40:55,058 INFO L231 Difference]: Finished difference. Result has 203 places, 390 transitions, 6265 flow [2024-06-27 23:40:55,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6038, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6265, PETRI_PLACES=203, PETRI_TRANSITIONS=390} [2024-06-27 23:40:55,059 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 160 predicate places. [2024-06-27 23:40:55,059 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 390 transitions, 6265 flow [2024-06-27 23:40:55,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 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 23:40:55,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:55,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:55,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 23:40:55,060 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:40:55,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:55,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1226174528, now seen corresponding path program 4 times [2024-06-27 23:40:55,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:55,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292476738] [2024-06-27 23:40:55,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:55,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:55,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:56,779 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 23:40:56,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:56,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292476738] [2024-06-27 23:40:56,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292476738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:56,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:56,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:40:56,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398864001] [2024-06-27 23:40:56,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:56,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:40:56,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:56,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:40:56,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:40:56,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:40:56,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 390 transitions, 6265 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 23:40:56,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:56,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:40:56,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:58,255 INFO L124 PetriNetUnfolderBase]: 3896/6020 cut-off events. [2024-06-27 23:40:58,255 INFO L125 PetriNetUnfolderBase]: For 298710/298710 co-relation queries the response was YES. [2024-06-27 23:40:58,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49870 conditions, 6020 events. 3896/6020 cut-off events. For 298710/298710 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 33736 event pairs, 1587 based on Foata normal form. 2/6017 useless extension candidates. Maximal degree in co-relation 49774. Up to 5723 conditions per place. [2024-06-27 23:40:58,316 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 384 selfloop transitions, 38 changer transitions 0/427 dead transitions. [2024-06-27 23:40:58,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 427 transitions, 7401 flow [2024-06-27 23:40:58,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:40:58,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:40:58,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 23:40:58,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-27 23:40:58,317 INFO L175 Difference]: Start difference. First operand has 203 places, 390 transitions, 6265 flow. Second operand 9 states and 162 transitions. [2024-06-27 23:40:58,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 427 transitions, 7401 flow [2024-06-27 23:40:58,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 427 transitions, 7233 flow, removed 67 selfloop flow, removed 4 redundant places. [2024-06-27 23:40:58,691 INFO L231 Difference]: Finished difference. Result has 208 places, 398 transitions, 6339 flow [2024-06-27 23:40:58,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6129, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6339, PETRI_PLACES=208, PETRI_TRANSITIONS=398} [2024-06-27 23:40:58,692 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 165 predicate places. [2024-06-27 23:40:58,692 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 398 transitions, 6339 flow [2024-06-27 23:40:58,692 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 23:40:58,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:58,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:58,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 23:40:58,693 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:40:58,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:58,693 INFO L85 PathProgramCache]: Analyzing trace with hash 73331470, now seen corresponding path program 4 times [2024-06-27 23:40:58,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:58,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026162756] [2024-06-27 23:40:58,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:58,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:58,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:00,530 INFO 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 23:41:00,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:00,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026162756] [2024-06-27 23:41:00,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026162756] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:00,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:00,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:41:00,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464308455] [2024-06-27 23:41:00,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:00,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:41:00,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:00,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:41:00,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:41:00,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:41:00,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 398 transitions, 6339 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 23:41:00,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:00,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:41:00,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:02,130 INFO L124 PetriNetUnfolderBase]: 3913/6047 cut-off events. [2024-06-27 23:41:02,130 INFO L125 PetriNetUnfolderBase]: For 311924/311924 co-relation queries the response was YES. [2024-06-27 23:41:02,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50177 conditions, 6047 events. 3913/6047 cut-off events. For 311924/311924 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 33888 event pairs, 1605 based on Foata normal form. 4/6046 useless extension candidates. Maximal degree in co-relation 50079. Up to 5778 conditions per place. [2024-06-27 23:41:02,189 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 397 selfloop transitions, 30 changer transitions 0/432 dead transitions. [2024-06-27 23:41:02,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 432 transitions, 7482 flow [2024-06-27 23:41:02,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:41:02,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:41:02,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-27 23:41:02,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41798941798941797 [2024-06-27 23:41:02,191 INFO L175 Difference]: Start difference. First operand has 208 places, 398 transitions, 6339 flow. Second operand 9 states and 158 transitions. [2024-06-27 23:41:02,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 432 transitions, 7482 flow [2024-06-27 23:41:02,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 432 transitions, 7376 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 23:41:02,599 INFO L231 Difference]: Finished difference. Result has 211 places, 405 transitions, 6470 flow [2024-06-27 23:41:02,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6244, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6470, PETRI_PLACES=211, PETRI_TRANSITIONS=405} [2024-06-27 23:41:02,600 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 168 predicate places. [2024-06-27 23:41:02,600 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 405 transitions, 6470 flow [2024-06-27 23:41:02,600 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 23:41:02,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:02,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:02,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 23:41:02,601 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:41:02,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:02,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1226471446, now seen corresponding path program 5 times [2024-06-27 23:41:02,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:02,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521056498] [2024-06-27 23:41:02,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:02,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:02,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:04,226 INFO 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 23:41:04,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:04,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521056498] [2024-06-27 23:41:04,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521056498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:04,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:04,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:41:04,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511691467] [2024-06-27 23:41:04,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:04,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:41:04,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:04,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:41:04,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:41:04,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:41:04,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 405 transitions, 6470 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 23:41:04,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:04,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:41:04,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:05,743 INFO L124 PetriNetUnfolderBase]: 3930/6072 cut-off events. [2024-06-27 23:41:05,743 INFO L125 PetriNetUnfolderBase]: For 325849/325849 co-relation queries the response was YES. [2024-06-27 23:41:05,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50809 conditions, 6072 events. 3930/6072 cut-off events. For 325849/325849 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 34031 event pairs, 1585 based on Foata normal form. 4/6071 useless extension candidates. Maximal degree in co-relation 50710. Up to 5802 conditions per place. [2024-06-27 23:41:05,811 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 406 selfloop transitions, 23 changer transitions 0/434 dead transitions. [2024-06-27 23:41:05,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 434 transitions, 7504 flow [2024-06-27 23:41:05,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:41:05,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:41:05,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-27 23:41:05,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3976190476190476 [2024-06-27 23:41:05,813 INFO L175 Difference]: Start difference. First operand has 211 places, 405 transitions, 6470 flow. Second operand 10 states and 167 transitions. [2024-06-27 23:41:05,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 434 transitions, 7504 flow [2024-06-27 23:41:06,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 434 transitions, 7430 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-27 23:41:06,255 INFO L231 Difference]: Finished difference. Result has 217 places, 407 transitions, 6501 flow [2024-06-27 23:41:06,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6396, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6501, PETRI_PLACES=217, PETRI_TRANSITIONS=407} [2024-06-27 23:41:06,256 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 174 predicate places. [2024-06-27 23:41:06,256 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 407 transitions, 6501 flow [2024-06-27 23:41:06,256 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 23:41:06,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:06,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:06,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 23:41:06,257 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:41:06,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:06,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1564212324, now seen corresponding path program 8 times [2024-06-27 23:41:06,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:06,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226706443] [2024-06-27 23:41:06,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:06,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:08,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:08,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:08,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226706443] [2024-06-27 23:41:08,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226706443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:08,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:08,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:41:08,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357500316] [2024-06-27 23:41:08,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:08,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:41:08,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:08,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:41:08,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:41:08,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-27 23:41:08,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 407 transitions, 6501 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 23:41:08,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:08,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-27 23:41:08,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:10,074 INFO L124 PetriNetUnfolderBase]: 3629/5683 cut-off events. [2024-06-27 23:41:10,074 INFO L125 PetriNetUnfolderBase]: For 348993/349074 co-relation queries the response was YES. [2024-06-27 23:41:10,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48903 conditions, 5683 events. 3629/5683 cut-off events. For 348993/349074 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 32664 event pairs, 1362 based on Foata normal form. 94/5751 useless extension candidates. Maximal degree in co-relation 48802. Up to 4955 conditions per place. [2024-06-27 23:41:10,140 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 328 selfloop transitions, 97 changer transitions 0/444 dead transitions. [2024-06-27 23:41:10,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 444 transitions, 7657 flow [2024-06-27 23:41:10,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:41:10,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:41:10,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-27 23:41:10,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4380952380952381 [2024-06-27 23:41:10,141 INFO L175 Difference]: Start difference. First operand has 217 places, 407 transitions, 6501 flow. Second operand 10 states and 184 transitions. [2024-06-27 23:41:10,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 444 transitions, 7657 flow [2024-06-27 23:41:10,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 444 transitions, 7490 flow, removed 50 selfloop flow, removed 10 redundant places. [2024-06-27 23:41:10,598 INFO L231 Difference]: Finished difference. Result has 218 places, 408 transitions, 6616 flow [2024-06-27 23:41:10,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6338, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6616, PETRI_PLACES=218, PETRI_TRANSITIONS=408} [2024-06-27 23:41:10,599 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 175 predicate places. [2024-06-27 23:41:10,599 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 408 transitions, 6616 flow [2024-06-27 23:41:10,599 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 23:41:10,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:10,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:10,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 23:41:10,599 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:41:10,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:10,600 INFO L85 PathProgramCache]: Analyzing trace with hash 66844720, now seen corresponding path program 6 times [2024-06-27 23:41:10,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:10,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184982259] [2024-06-27 23:41:10,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:10,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:10,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:12,671 INFO 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 23:41:12,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:12,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184982259] [2024-06-27 23:41:12,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184982259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:12,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:12,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:41:12,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201473021] [2024-06-27 23:41:12,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:12,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:41:12,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:12,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:41:12,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:41:12,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:41:12,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 408 transitions, 6616 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 23:41:12,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:12,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:41:12,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:14,259 INFO L124 PetriNetUnfolderBase]: 3942/6103 cut-off events. [2024-06-27 23:41:14,260 INFO L125 PetriNetUnfolderBase]: For 351327/351327 co-relation queries the response was YES. [2024-06-27 23:41:14,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51297 conditions, 6103 events. 3942/6103 cut-off events. For 351327/351327 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 34323 event pairs, 1607 based on Foata normal form. 4/6102 useless extension candidates. Maximal degree in co-relation 51195. Up to 5764 conditions per place. [2024-06-27 23:41:14,324 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 379 selfloop transitions, 56 changer transitions 0/440 dead transitions. [2024-06-27 23:41:14,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 440 transitions, 7759 flow [2024-06-27 23:41:14,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:41:14,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:41:14,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-27 23:41:14,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-06-27 23:41:14,325 INFO L175 Difference]: Start difference. First operand has 218 places, 408 transitions, 6616 flow. Second operand 9 states and 154 transitions. [2024-06-27 23:41:14,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 440 transitions, 7759 flow [2024-06-27 23:41:14,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 440 transitions, 7286 flow, removed 33 selfloop flow, removed 10 redundant places. [2024-06-27 23:41:14,779 INFO L231 Difference]: Finished difference. Result has 218 places, 417 transitions, 6455 flow [2024-06-27 23:41:14,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6151, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6455, PETRI_PLACES=218, PETRI_TRANSITIONS=417} [2024-06-27 23:41:14,780 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 175 predicate places. [2024-06-27 23:41:14,780 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 417 transitions, 6455 flow [2024-06-27 23:41:14,780 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 23:41:14,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:14,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:14,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 23:41:14,780 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:41:14,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:14,781 INFO L85 PathProgramCache]: Analyzing trace with hash -847686724, now seen corresponding path program 3 times [2024-06-27 23:41:14,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:14,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924283328] [2024-06-27 23:41:14,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:14,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:14,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:16,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:16,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:16,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924283328] [2024-06-27 23:41:16,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924283328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:16,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:16,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:41:16,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122423909] [2024-06-27 23:41:16,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:16,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:41:16,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:16,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:41:16,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:41:16,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-27 23:41:16,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 417 transitions, 6455 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:16,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:16,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-27 23:41:16,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:17,406 INFO L124 PetriNetUnfolderBase]: 3761/5899 cut-off events. [2024-06-27 23:41:17,406 INFO L125 PetriNetUnfolderBase]: For 359373/359434 co-relation queries the response was YES. [2024-06-27 23:41:17,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48972 conditions, 5899 events. 3761/5899 cut-off events. For 359373/359434 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 33968 event pairs, 1583 based on Foata normal form. 43/5913 useless extension candidates. Maximal degree in co-relation 48870. Up to 5527 conditions per place. [2024-06-27 23:41:17,459 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 366 selfloop transitions, 13 changer transitions 0/425 dead transitions. [2024-06-27 23:41:17,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 425 transitions, 7245 flow [2024-06-27 23:41:17,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:41:17,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:41:17,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-06-27 23:41:17,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4246031746031746 [2024-06-27 23:41:17,460 INFO L175 Difference]: Start difference. First operand has 218 places, 417 transitions, 6455 flow. Second operand 6 states and 107 transitions. [2024-06-27 23:41:17,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 425 transitions, 7245 flow [2024-06-27 23:41:17,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 425 transitions, 7049 flow, removed 47 selfloop flow, removed 6 redundant places. [2024-06-27 23:41:17,951 INFO L231 Difference]: Finished difference. Result has 218 places, 417 transitions, 6291 flow [2024-06-27 23:41:17,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6259, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6291, PETRI_PLACES=218, PETRI_TRANSITIONS=417} [2024-06-27 23:41:17,952 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 175 predicate places. [2024-06-27 23:41:17,952 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 417 transitions, 6291 flow [2024-06-27 23:41:17,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:17,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:17,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:17,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 23:41:17,953 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:41:17,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:17,953 INFO L85 PathProgramCache]: Analyzing trace with hash -853394692, now seen corresponding path program 1 times [2024-06-27 23:41:17,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:17,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360895424] [2024-06-27 23:41:17,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:17,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:17,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:19,766 INFO 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 23:41:19,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:19,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360895424] [2024-06-27 23:41:19,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360895424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:19,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:19,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:41:19,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097968644] [2024-06-27 23:41:19,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:19,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:41:19,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:19,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:41:19,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:41:19,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:41:19,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 417 transitions, 6291 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:19,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:19,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:41:19,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:21,215 INFO L124 PetriNetUnfolderBase]: 3941/6098 cut-off events. [2024-06-27 23:41:21,216 INFO L125 PetriNetUnfolderBase]: For 367380/367380 co-relation queries the response was YES. [2024-06-27 23:41:21,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50526 conditions, 6098 events. 3941/6098 cut-off events. For 367380/367380 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 34285 event pairs, 1615 based on Foata normal form. 1/6094 useless extension candidates. Maximal degree in co-relation 50423. Up to 5880 conditions per place. [2024-06-27 23:41:21,282 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 408 selfloop transitions, 21 changer transitions 0/434 dead transitions. [2024-06-27 23:41:21,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 434 transitions, 7335 flow [2024-06-27 23:41:21,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:41:21,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:41:21,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-06-27 23:41:21,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-27 23:41:21,286 INFO L175 Difference]: Start difference. First operand has 218 places, 417 transitions, 6291 flow. Second operand 6 states and 108 transitions. [2024-06-27 23:41:21,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 434 transitions, 7335 flow [2024-06-27 23:41:21,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 434 transitions, 7287 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 23:41:21,948 INFO L231 Difference]: Finished difference. Result has 219 places, 423 transitions, 6356 flow [2024-06-27 23:41:21,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6243, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6356, PETRI_PLACES=219, PETRI_TRANSITIONS=423} [2024-06-27 23:41:21,948 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 176 predicate places. [2024-06-27 23:41:21,948 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 423 transitions, 6356 flow [2024-06-27 23:41:21,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:21,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:21,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:21,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 23:41:21,949 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:41:21,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:21,950 INFO L85 PathProgramCache]: Analyzing trace with hash -389197282, now seen corresponding path program 2 times [2024-06-27 23:41:21,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:21,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430143782] [2024-06-27 23:41:21,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:21,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:21,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:23,691 INFO 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 23:41:23,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:23,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430143782] [2024-06-27 23:41:23,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430143782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:23,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:23,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:41:23,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781600094] [2024-06-27 23:41:23,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:23,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:41:23,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:23,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:41:23,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:41:23,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:41:23,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 423 transitions, 6356 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:23,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:23,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:41:23,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:25,211 INFO L124 PetriNetUnfolderBase]: 3938/6094 cut-off events. [2024-06-27 23:41:25,211 INFO L125 PetriNetUnfolderBase]: For 380345/380349 co-relation queries the response was YES. [2024-06-27 23:41:25,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51220 conditions, 6094 events. 3938/6094 cut-off events. For 380345/380349 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 34261 event pairs, 1605 based on Foata normal form. 5/6094 useless extension candidates. Maximal degree in co-relation 51115. Up to 5877 conditions per place. [2024-06-27 23:41:25,274 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 405 selfloop transitions, 21 changer transitions 0/431 dead transitions. [2024-06-27 23:41:25,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 431 transitions, 7240 flow [2024-06-27 23:41:25,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:41:25,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:41:25,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2024-06-27 23:41:25,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4126984126984127 [2024-06-27 23:41:25,275 INFO L175 Difference]: Start difference. First operand has 219 places, 423 transitions, 6356 flow. Second operand 6 states and 104 transitions. [2024-06-27 23:41:25,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 431 transitions, 7240 flow [2024-06-27 23:41:25,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 431 transitions, 7205 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-06-27 23:41:25,887 INFO L231 Difference]: Finished difference. Result has 223 places, 423 transitions, 6371 flow [2024-06-27 23:41:25,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6321, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6371, PETRI_PLACES=223, PETRI_TRANSITIONS=423} [2024-06-27 23:41:25,888 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 180 predicate places. [2024-06-27 23:41:25,888 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 423 transitions, 6371 flow [2024-06-27 23:41:25,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:25,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:25,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:25,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 23:41:25,888 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:41:25,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:25,888 INFO L85 PathProgramCache]: Analyzing trace with hash -847672836, now seen corresponding path program 1 times [2024-06-27 23:41:25,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:25,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138721610] [2024-06-27 23:41:25,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:25,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:25,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:27,945 INFO 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 23:41:27,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:27,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138721610] [2024-06-27 23:41:27,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138721610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:27,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:27,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:41:27,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179761981] [2024-06-27 23:41:27,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:27,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:41:27,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:27,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:41:27,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:41:28,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:41:28,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 423 transitions, 6371 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:28,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:28,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:41:28,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:29,557 INFO L124 PetriNetUnfolderBase]: 3884/6030 cut-off events. [2024-06-27 23:41:29,558 INFO L125 PetriNetUnfolderBase]: For 397148/397209 co-relation queries the response was YES. [2024-06-27 23:41:29,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50829 conditions, 6030 events. 3884/6030 cut-off events. For 397148/397209 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 34153 event pairs, 1664 based on Foata normal form. 42/6047 useless extension candidates. Maximal degree in co-relation 50720. Up to 5756 conditions per place. [2024-06-27 23:41:29,623 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 375 selfloop transitions, 16 changer transitions 0/435 dead transitions. [2024-06-27 23:41:29,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 435 transitions, 7219 flow [2024-06-27 23:41:29,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:41:29,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:41:29,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 124 transitions. [2024-06-27 23:41:29,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36904761904761907 [2024-06-27 23:41:29,624 INFO L175 Difference]: Start difference. First operand has 223 places, 423 transitions, 6371 flow. Second operand 8 states and 124 transitions. [2024-06-27 23:41:29,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 435 transitions, 7219 flow [2024-06-27 23:41:30,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 435 transitions, 7184 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 23:41:30,288 INFO L231 Difference]: Finished difference. Result has 228 places, 426 transitions, 6412 flow [2024-06-27 23:41:30,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6336, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6412, PETRI_PLACES=228, PETRI_TRANSITIONS=426} [2024-06-27 23:41:30,289 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 185 predicate places. [2024-06-27 23:41:30,289 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 426 transitions, 6412 flow [2024-06-27 23:41:30,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:30,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:30,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:30,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 23:41:30,295 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:41:30,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:30,296 INFO L85 PathProgramCache]: Analyzing trace with hash 817298164, now seen corresponding path program 1 times [2024-06-27 23:41:30,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:30,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773818700] [2024-06-27 23:41:30,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:30,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:30,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:32,591 INFO 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 23:41:32,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:32,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773818700] [2024-06-27 23:41:32,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773818700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:32,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:32,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:32,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225402885] [2024-06-27 23:41:32,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:32,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:32,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:32,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:32,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:41:32,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:41:32,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 426 transitions, 6412 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 23:41:32,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:32,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:41:32,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:34,565 INFO L124 PetriNetUnfolderBase]: 3981/6153 cut-off events. [2024-06-27 23:41:34,566 INFO L125 PetriNetUnfolderBase]: For 417172/417175 co-relation queries the response was YES. [2024-06-27 23:41:34,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52720 conditions, 6153 events. 3981/6153 cut-off events. For 417172/417175 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 34678 event pairs, 1394 based on Foata normal form. 10/6156 useless extension candidates. Maximal degree in co-relation 52609. Up to 5700 conditions per place. [2024-06-27 23:41:34,628 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 358 selfloop transitions, 113 changer transitions 0/476 dead transitions. [2024-06-27 23:41:34,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 476 transitions, 7759 flow [2024-06-27 23:41:34,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:41:34,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:41:34,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-06-27 23:41:34,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44372294372294374 [2024-06-27 23:41:34,630 INFO L175 Difference]: Start difference. First operand has 228 places, 426 transitions, 6412 flow. Second operand 11 states and 205 transitions. [2024-06-27 23:41:34,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 476 transitions, 7759 flow [2024-06-27 23:41:35,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 476 transitions, 7693 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-27 23:41:35,174 INFO L231 Difference]: Finished difference. Result has 233 places, 432 transitions, 6777 flow [2024-06-27 23:41:35,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6346, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6777, PETRI_PLACES=233, PETRI_TRANSITIONS=432} [2024-06-27 23:41:35,175 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 190 predicate places. [2024-06-27 23:41:35,175 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 432 transitions, 6777 flow [2024-06-27 23:41:35,175 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 23:41:35,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:35,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:35,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 23:41:35,176 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:41:35,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:35,176 INFO L85 PathProgramCache]: Analyzing trace with hash -398730124, now seen corresponding path program 2 times [2024-06-27 23:41:35,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:35,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538182519] [2024-06-27 23:41:35,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:35,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:35,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:37,371 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 23:41:37,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:37,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538182519] [2024-06-27 23:41:37,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538182519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:37,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:37,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:41:37,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209222768] [2024-06-27 23:41:37,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:37,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:41:37,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:37,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:41:37,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:41:37,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:41:37,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 432 transitions, 6777 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:37,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:37,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:41:37,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:39,182 INFO L124 PetriNetUnfolderBase]: 4031/6228 cut-off events. [2024-06-27 23:41:39,182 INFO L125 PetriNetUnfolderBase]: For 436440/436448 co-relation queries the response was YES. [2024-06-27 23:41:39,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54423 conditions, 6228 events. 4031/6228 cut-off events. For 436440/436448 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 35060 event pairs, 1258 based on Foata normal form. 14/6237 useless extension candidates. Maximal degree in co-relation 54313. Up to 5853 conditions per place. [2024-06-27 23:41:39,408 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 389 selfloop transitions, 79 changer transitions 0/473 dead transitions. [2024-06-27 23:41:39,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 473 transitions, 8125 flow [2024-06-27 23:41:39,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:41:39,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:41:39,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-27 23:41:39,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-27 23:41:39,411 INFO L175 Difference]: Start difference. First operand has 233 places, 432 transitions, 6777 flow. Second operand 10 states and 180 transitions. [2024-06-27 23:41:39,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 473 transitions, 8125 flow [2024-06-27 23:41:39,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 473 transitions, 7719 flow, removed 92 selfloop flow, removed 9 redundant places. [2024-06-27 23:41:39,925 INFO L231 Difference]: Finished difference. Result has 234 places, 440 transitions, 6826 flow [2024-06-27 23:41:39,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6427, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6826, PETRI_PLACES=234, PETRI_TRANSITIONS=440} [2024-06-27 23:41:39,925 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 191 predicate places. [2024-06-27 23:41:39,925 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 440 transitions, 6826 flow [2024-06-27 23:41:39,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:39,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:39,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:39,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 23:41:39,926 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:41:39,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:39,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1119671150, now seen corresponding path program 3 times [2024-06-27 23:41:39,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:39,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575844852] [2024-06-27 23:41:39,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:39,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:42,013 INFO 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 23:41:42,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:42,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575844852] [2024-06-27 23:41:42,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575844852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:42,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:42,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:41:42,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61379187] [2024-06-27 23:41:42,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:42,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:41:42,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:42,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:41:42,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:41:42,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:41:42,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 440 transitions, 6826 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:42,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:42,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:41:42,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:43,825 INFO L124 PetriNetUnfolderBase]: 4116/6372 cut-off events. [2024-06-27 23:41:43,825 INFO L125 PetriNetUnfolderBase]: For 450265/450270 co-relation queries the response was YES. [2024-06-27 23:41:43,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55339 conditions, 6372 events. 4116/6372 cut-off events. For 450265/450270 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 36140 event pairs, 1220 based on Foata normal form. 8/6375 useless extension candidates. Maximal degree in co-relation 55227. Up to 5475 conditions per place. [2024-06-27 23:41:43,896 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 288 selfloop transitions, 221 changer transitions 0/514 dead transitions. [2024-06-27 23:41:43,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 514 transitions, 8539 flow [2024-06-27 23:41:43,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:41:43,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:41:43,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-27 23:41:43,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-06-27 23:41:43,898 INFO L175 Difference]: Start difference. First operand has 234 places, 440 transitions, 6826 flow. Second operand 10 states and 192 transitions. [2024-06-27 23:41:43,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 514 transitions, 8539 flow [2024-06-27 23:41:44,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 514 transitions, 8260 flow, removed 67 selfloop flow, removed 8 redundant places. [2024-06-27 23:41:44,739 INFO L231 Difference]: Finished difference. Result has 238 places, 469 transitions, 7484 flow [2024-06-27 23:41:44,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6547, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7484, PETRI_PLACES=238, PETRI_TRANSITIONS=469} [2024-06-27 23:41:44,740 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 195 predicate places. [2024-06-27 23:41:44,740 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 469 transitions, 7484 flow [2024-06-27 23:41:44,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:44,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:44,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:44,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 23:41:44,741 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:41:44,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:44,741 INFO L85 PathProgramCache]: Analyzing trace with hash 786166052, now seen corresponding path program 4 times [2024-06-27 23:41:44,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:44,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741490159] [2024-06-27 23:41:44,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:44,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:47,975 INFO 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 23:41:47,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:47,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741490159] [2024-06-27 23:41:47,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741490159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:47,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:47,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:47,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847857354] [2024-06-27 23:41:47,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:47,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:47,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:47,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:47,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:41:48,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:41:48,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 469 transitions, 7484 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 23:41:48,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:48,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:41:48,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:50,163 INFO L124 PetriNetUnfolderBase]: 4133/6400 cut-off events. [2024-06-27 23:41:50,163 INFO L125 PetriNetUnfolderBase]: For 468987/468992 co-relation queries the response was YES. [2024-06-27 23:41:50,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56719 conditions, 6400 events. 4133/6400 cut-off events. For 468987/468992 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 36396 event pairs, 1238 based on Foata normal form. 8/6403 useless extension candidates. Maximal degree in co-relation 56604. Up to 5502 conditions per place. [2024-06-27 23:41:50,236 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 287 selfloop transitions, 227 changer transitions 0/519 dead transitions. [2024-06-27 23:41:50,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 519 transitions, 8937 flow [2024-06-27 23:41:50,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:41:50,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:41:50,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 181 transitions. [2024-06-27 23:41:50,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47883597883597884 [2024-06-27 23:41:50,238 INFO L175 Difference]: Start difference. First operand has 238 places, 469 transitions, 7484 flow. Second operand 9 states and 181 transitions. [2024-06-27 23:41:50,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 519 transitions, 8937 flow [2024-06-27 23:41:51,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 519 transitions, 8502 flow, removed 79 selfloop flow, removed 4 redundant places. [2024-06-27 23:41:51,036 INFO L231 Difference]: Finished difference. Result has 243 places, 473 transitions, 7624 flow [2024-06-27 23:41:51,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7051, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7624, PETRI_PLACES=243, PETRI_TRANSITIONS=473} [2024-06-27 23:41:51,037 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 200 predicate places. [2024-06-27 23:41:51,037 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 473 transitions, 7624 flow [2024-06-27 23:41:51,037 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 23:41:51,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:51,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:51,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 23:41:51,037 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:41:51,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:51,038 INFO L85 PathProgramCache]: Analyzing trace with hash 786173492, now seen corresponding path program 5 times [2024-06-27 23:41:51,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:51,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383673750] [2024-06-27 23:41:51,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:51,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:53,409 INFO 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 23:41:53,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:53,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383673750] [2024-06-27 23:41:53,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383673750] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:53,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:53,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:53,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729607678] [2024-06-27 23:41:53,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:53,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:53,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:53,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:53,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:41:53,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:41:53,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 473 transitions, 7624 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 23:41:53,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:53,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:41:53,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:55,445 INFO L124 PetriNetUnfolderBase]: 4150/6423 cut-off events. [2024-06-27 23:41:55,446 INFO L125 PetriNetUnfolderBase]: For 490235/490240 co-relation queries the response was YES. [2024-06-27 23:41:55,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57236 conditions, 6423 events. 4150/6423 cut-off events. For 490235/490240 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 36575 event pairs, 1237 based on Foata normal form. 8/6426 useless extension candidates. Maximal degree in co-relation 57121. Up to 5359 conditions per place. [2024-06-27 23:41:55,511 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 271 selfloop transitions, 245 changer transitions 0/521 dead transitions. [2024-06-27 23:41:55,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 521 transitions, 9050 flow [2024-06-27 23:41:55,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:41:55,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:41:55,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-27 23:41:55,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-27 23:41:55,513 INFO L175 Difference]: Start difference. First operand has 243 places, 473 transitions, 7624 flow. Second operand 10 states and 190 transitions. [2024-06-27 23:41:55,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 521 transitions, 9050 flow [2024-06-27 23:41:56,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 521 transitions, 8557 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-27 23:41:56,361 INFO L231 Difference]: Finished difference. Result has 248 places, 475 transitions, 7719 flow [2024-06-27 23:41:56,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7131, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7719, PETRI_PLACES=248, PETRI_TRANSITIONS=475} [2024-06-27 23:41:56,361 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 205 predicate places. [2024-06-27 23:41:56,361 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 475 transitions, 7719 flow [2024-06-27 23:41:56,362 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 23:41:56,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:56,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:56,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 23:41:56,362 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:41:56,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:56,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1564849200, now seen corresponding path program 1 times [2024-06-27 23:41:56,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:56,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580017307] [2024-06-27 23:41:56,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:56,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:56,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:58,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:58,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:58,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580017307] [2024-06-27 23:41:58,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580017307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:58,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:58,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:41:58,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980630919] [2024-06-27 23:41:58,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:58,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:41:58,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:58,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:41:58,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:41:58,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:41:58,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 475 transitions, 7719 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:58,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:58,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:41:58,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:59,945 INFO L124 PetriNetUnfolderBase]: 4105/6356 cut-off events. [2024-06-27 23:41:59,945 INFO L125 PetriNetUnfolderBase]: For 507828/507889 co-relation queries the response was YES. [2024-06-27 23:41:59,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57219 conditions, 6356 events. 4105/6356 cut-off events. For 507828/507889 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 36059 event pairs, 1060 based on Foata normal form. 46/6374 useless extension candidates. Maximal degree in co-relation 57102. Up to 5918 conditions per place. [2024-06-27 23:42:00,023 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 399 selfloop transitions, 59 changer transitions 0/502 dead transitions. [2024-06-27 23:42:00,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 502 transitions, 8967 flow [2024-06-27 23:42:00,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:42:00,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:42:00,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-27 23:42:00,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46598639455782315 [2024-06-27 23:42:00,024 INFO L175 Difference]: Start difference. First operand has 248 places, 475 transitions, 7719 flow. Second operand 7 states and 137 transitions. [2024-06-27 23:42:00,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 502 transitions, 8967 flow [2024-06-27 23:42:00,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 502 transitions, 8399 flow, removed 41 selfloop flow, removed 8 redundant places. [2024-06-27 23:42:00,896 INFO L231 Difference]: Finished difference. Result has 247 places, 482 transitions, 7393 flow [2024-06-27 23:42:00,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7151, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7393, PETRI_PLACES=247, PETRI_TRANSITIONS=482} [2024-06-27 23:42:00,896 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 204 predicate places. [2024-06-27 23:42:00,896 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 482 transitions, 7393 flow [2024-06-27 23:42:00,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:00,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:00,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:00,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 23:42:00,897 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:42:00,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:00,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1067260084, now seen corresponding path program 6 times [2024-06-27 23:42:00,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:00,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336245840] [2024-06-27 23:42:00,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:00,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:00,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:03,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:03,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:03,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336245840] [2024-06-27 23:42:03,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336245840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:03,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:03,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:42:03,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438378137] [2024-06-27 23:42:03,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:03,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:42:03,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:03,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:42:03,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:42:03,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:42:03,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 482 transitions, 7393 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:03,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:03,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:42:03,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:05,077 INFO L124 PetriNetUnfolderBase]: 4199/6487 cut-off events. [2024-06-27 23:42:05,077 INFO L125 PetriNetUnfolderBase]: For 518776/518776 co-relation queries the response was YES. [2024-06-27 23:42:05,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57514 conditions, 6487 events. 4199/6487 cut-off events. For 518776/518776 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 36716 event pairs, 1653 based on Foata normal form. 8/6490 useless extension candidates. Maximal degree in co-relation 57397. Up to 6117 conditions per place. [2024-06-27 23:42:05,163 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 442 selfloop transitions, 66 changer transitions 0/515 dead transitions. [2024-06-27 23:42:05,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 515 transitions, 8671 flow [2024-06-27 23:42:05,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:42:05,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:42:05,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-27 23:42:05,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4023809523809524 [2024-06-27 23:42:05,165 INFO L175 Difference]: Start difference. First operand has 247 places, 482 transitions, 7393 flow. Second operand 10 states and 169 transitions. [2024-06-27 23:42:05,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 515 transitions, 8671 flow [2024-06-27 23:42:06,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 515 transitions, 8523 flow, removed 48 selfloop flow, removed 3 redundant places. [2024-06-27 23:42:06,197 INFO L231 Difference]: Finished difference. Result has 254 places, 489 transitions, 7564 flow [2024-06-27 23:42:06,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7245, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7564, PETRI_PLACES=254, PETRI_TRANSITIONS=489} [2024-06-27 23:42:06,198 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 211 predicate places. [2024-06-27 23:42:06,198 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 489 transitions, 7564 flow [2024-06-27 23:42:06,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:06,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:06,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:06,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 23:42:06,199 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:42:06,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:06,199 INFO L85 PathProgramCache]: Analyzing trace with hash 351883248, now seen corresponding path program 7 times [2024-06-27 23:42:06,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:06,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683629904] [2024-06-27 23:42:06,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:06,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:06,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:08,559 INFO 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 23:42:08,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:08,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683629904] [2024-06-27 23:42:08,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683629904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:08,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:08,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:08,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361653067] [2024-06-27 23:42:08,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:08,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:08,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:08,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:08,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:08,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:42:08,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 489 transitions, 7564 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 23:42:08,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:08,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:42:08,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:10,527 INFO L124 PetriNetUnfolderBase]: 4298/6639 cut-off events. [2024-06-27 23:42:10,528 INFO L125 PetriNetUnfolderBase]: For 534259/534259 co-relation queries the response was YES. [2024-06-27 23:42:10,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59171 conditions, 6639 events. 4298/6639 cut-off events. For 534259/534259 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 37748 event pairs, 1640 based on Foata normal form. 4/6638 useless extension candidates. Maximal degree in co-relation 59051. Up to 5889 conditions per place. [2024-06-27 23:42:10,601 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 369 selfloop transitions, 173 changer transitions 0/549 dead transitions. [2024-06-27 23:42:10,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 549 transitions, 9259 flow [2024-06-27 23:42:10,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:42:10,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:42:10,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-27 23:42:10,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 23:42:10,603 INFO L175 Difference]: Start difference. First operand has 254 places, 489 transitions, 7564 flow. Second operand 9 states and 168 transitions. [2024-06-27 23:42:10,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 549 transitions, 9259 flow [2024-06-27 23:42:11,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 549 transitions, 8996 flow, removed 61 selfloop flow, removed 9 redundant places. [2024-06-27 23:42:11,571 INFO L231 Difference]: Finished difference. Result has 256 places, 512 transitions, 8092 flow [2024-06-27 23:42:11,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7301, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8092, PETRI_PLACES=256, PETRI_TRANSITIONS=512} [2024-06-27 23:42:11,572 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 213 predicate places. [2024-06-27 23:42:11,572 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 512 transitions, 8092 flow [2024-06-27 23:42:11,572 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 23:42:11,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:11,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:11,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 23:42:11,573 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:42:11,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:11,573 INFO L85 PathProgramCache]: Analyzing trace with hash -2080061154, now seen corresponding path program 8 times [2024-06-27 23:42:11,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:11,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192361998] [2024-06-27 23:42:11,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:11,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:11,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:13,800 INFO 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 23:42:13,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:13,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192361998] [2024-06-27 23:42:13,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192361998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:13,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:13,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:42:13,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946163117] [2024-06-27 23:42:13,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:13,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:42:13,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:13,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:42:13,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:42:13,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:42:13,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 512 transitions, 8092 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:13,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:13,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:42:13,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:15,546 INFO L124 PetriNetUnfolderBase]: 4362/6735 cut-off events. [2024-06-27 23:42:15,546 INFO L125 PetriNetUnfolderBase]: For 562991/562991 co-relation queries the response was YES. [2024-06-27 23:42:15,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60965 conditions, 6735 events. 4362/6735 cut-off events. For 562991/562991 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 38436 event pairs, 1619 based on Foata normal form. 4/6734 useless extension candidates. Maximal degree in co-relation 60843. Up to 5821 conditions per place. [2024-06-27 23:42:15,629 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 361 selfloop transitions, 190 changer transitions 0/558 dead transitions. [2024-06-27 23:42:15,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 558 transitions, 9866 flow [2024-06-27 23:42:15,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:42:15,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:42:15,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 23:42:15,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4261904761904762 [2024-06-27 23:42:15,630 INFO L175 Difference]: Start difference. First operand has 256 places, 512 transitions, 8092 flow. Second operand 10 states and 179 transitions. [2024-06-27 23:42:15,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 558 transitions, 9866 flow [2024-06-27 23:42:16,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 558 transitions, 9495 flow, removed 55 selfloop flow, removed 5 redundant places. [2024-06-27 23:42:16,646 INFO L231 Difference]: Finished difference. Result has 262 places, 520 transitions, 8374 flow [2024-06-27 23:42:16,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7721, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8374, PETRI_PLACES=262, PETRI_TRANSITIONS=520} [2024-06-27 23:42:16,647 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 219 predicate places. [2024-06-27 23:42:16,647 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 520 transitions, 8374 flow [2024-06-27 23:42:16,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:16,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:16,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:16,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 23:42:16,647 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:42:16,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:16,648 INFO L85 PathProgramCache]: Analyzing trace with hash -2085632784, now seen corresponding path program 9 times [2024-06-27 23:42:16,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:16,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225978723] [2024-06-27 23:42:16,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:16,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:16,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:18,764 INFO 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 23:42:18,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:18,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225978723] [2024-06-27 23:42:18,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225978723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:18,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:18,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:42:18,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032964007] [2024-06-27 23:42:18,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:18,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:42:18,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:18,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:42:18,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:42:18,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:42:18,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 520 transitions, 8374 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:18,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:18,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:42:18,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:20,754 INFO L124 PetriNetUnfolderBase]: 4354/6729 cut-off events. [2024-06-27 23:42:20,754 INFO L125 PetriNetUnfolderBase]: For 574694/574694 co-relation queries the response was YES. [2024-06-27 23:42:20,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61028 conditions, 6729 events. 4354/6729 cut-off events. For 574694/574694 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 38434 event pairs, 1649 based on Foata normal form. 4/6728 useless extension candidates. Maximal degree in co-relation 60904. Up to 5977 conditions per place. [2024-06-27 23:42:20,826 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 376 selfloop transitions, 171 changer transitions 0/554 dead transitions. [2024-06-27 23:42:20,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 554 transitions, 9699 flow [2024-06-27 23:42:20,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:42:20,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:42:20,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-27 23:42:20,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497354497354497 [2024-06-27 23:42:20,828 INFO L175 Difference]: Start difference. First operand has 262 places, 520 transitions, 8374 flow. Second operand 9 states and 170 transitions. [2024-06-27 23:42:20,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 554 transitions, 9699 flow [2024-06-27 23:42:21,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 554 transitions, 9361 flow, removed 78 selfloop flow, removed 6 redundant places. [2024-06-27 23:42:21,745 INFO L231 Difference]: Finished difference. Result has 265 places, 520 transitions, 8390 flow [2024-06-27 23:42:21,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8036, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8390, PETRI_PLACES=265, PETRI_TRANSITIONS=520} [2024-06-27 23:42:21,745 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 222 predicate places. [2024-06-27 23:42:21,746 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 520 transitions, 8390 flow [2024-06-27 23:42:21,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:21,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:21,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:21,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 23:42:21,746 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:42:21,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:21,747 INFO L85 PathProgramCache]: Analyzing trace with hash -862746212, now seen corresponding path program 2 times [2024-06-27 23:42:21,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:21,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564033853] [2024-06-27 23:42:21,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:21,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:21,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:23,425 INFO 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 23:42:23,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:23,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564033853] [2024-06-27 23:42:23,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564033853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:23,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:23,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:42:23,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139088811] [2024-06-27 23:42:23,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:23,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:42:23,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:23,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:42:23,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:42:23,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:42:23,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 520 transitions, 8390 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:23,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:23,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:42:23,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:24,995 INFO L124 PetriNetUnfolderBase]: 4252/6598 cut-off events. [2024-06-27 23:42:24,995 INFO L125 PetriNetUnfolderBase]: For 586147/586224 co-relation queries the response was YES. [2024-06-27 23:42:25,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60302 conditions, 6598 events. 4252/6598 cut-off events. For 586147/586224 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 38083 event pairs, 1712 based on Foata normal form. 56/6608 useless extension candidates. Maximal degree in co-relation 60176. Up to 6248 conditions per place. [2024-06-27 23:42:25,079 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 457 selfloop transitions, 41 changer transitions 0/542 dead transitions. [2024-06-27 23:42:25,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 542 transitions, 9719 flow [2024-06-27 23:42:25,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:42:25,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:42:25,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-27 23:42:25,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4217687074829932 [2024-06-27 23:42:25,081 INFO L175 Difference]: Start difference. First operand has 265 places, 520 transitions, 8390 flow. Second operand 7 states and 124 transitions. [2024-06-27 23:42:25,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 542 transitions, 9719 flow [2024-06-27 23:42:25,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 542 transitions, 9216 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 23:42:25,957 INFO L231 Difference]: Finished difference. Result has 263 places, 529 transitions, 8162 flow [2024-06-27 23:42:25,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7887, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8162, PETRI_PLACES=263, PETRI_TRANSITIONS=529} [2024-06-27 23:42:25,957 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 220 predicate places. [2024-06-27 23:42:25,957 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 529 transitions, 8162 flow [2024-06-27 23:42:25,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:25,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:25,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:25,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 23:42:25,958 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:42:25,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:25,958 INFO L85 PathProgramCache]: Analyzing trace with hash 625002428, now seen corresponding path program 10 times [2024-06-27 23:42:25,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:25,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793659474] [2024-06-27 23:42:25,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:25,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:25,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:28,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:28,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:28,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793659474] [2024-06-27 23:42:28,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793659474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:28,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:28,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:42:28,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210568100] [2024-06-27 23:42:28,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:28,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:42:28,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:28,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:42:28,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:42:28,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:42:28,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 529 transitions, 8162 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:28,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:28,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:42:28,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:30,143 INFO L124 PetriNetUnfolderBase]: 4441/6852 cut-off events. [2024-06-27 23:42:30,143 INFO L125 PetriNetUnfolderBase]: For 603648/603648 co-relation queries the response was YES. [2024-06-27 23:42:30,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62215 conditions, 6852 events. 4441/6852 cut-off events. For 603648/603648 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 39244 event pairs, 1708 based on Foata normal form. 4/6851 useless extension candidates. Maximal degree in co-relation 62088. Up to 6350 conditions per place. [2024-06-27 23:42:30,229 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 475 selfloop transitions, 94 changer transitions 0/579 dead transitions. [2024-06-27 23:42:30,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 579 transitions, 9842 flow [2024-06-27 23:42:30,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:42:30,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:42:30,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-27 23:42:30,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43386243386243384 [2024-06-27 23:42:30,230 INFO L175 Difference]: Start difference. First operand has 263 places, 529 transitions, 8162 flow. Second operand 9 states and 164 transitions. [2024-06-27 23:42:30,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 579 transitions, 9842 flow [2024-06-27 23:42:31,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 579 transitions, 9742 flow, removed 38 selfloop flow, removed 3 redundant places. [2024-06-27 23:42:31,154 INFO L231 Difference]: Finished difference. Result has 269 places, 546 transitions, 8590 flow [2024-06-27 23:42:31,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8062, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8590, PETRI_PLACES=269, PETRI_TRANSITIONS=546} [2024-06-27 23:42:31,155 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 226 predicate places. [2024-06-27 23:42:31,155 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 546 transitions, 8590 flow [2024-06-27 23:42:31,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:31,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:31,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:31,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 23:42:31,155 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:42:31,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:31,156 INFO L85 PathProgramCache]: Analyzing trace with hash 625211678, now seen corresponding path program 11 times [2024-06-27 23:42:31,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:31,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429428638] [2024-06-27 23:42:31,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:31,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:31,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:33,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:33,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:33,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429428638] [2024-06-27 23:42:33,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429428638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:33,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:33,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:33,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307287837] [2024-06-27 23:42:33,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:33,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:33,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:33,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:33,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:33,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:42:33,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 546 transitions, 8590 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 23:42:33,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:33,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:42:33,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:35,310 INFO L124 PetriNetUnfolderBase]: 4481/6915 cut-off events. [2024-06-27 23:42:35,310 INFO L125 PetriNetUnfolderBase]: For 639313/639313 co-relation queries the response was YES. [2024-06-27 23:42:35,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64129 conditions, 6915 events. 4481/6915 cut-off events. For 639313/639313 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 39675 event pairs, 1701 based on Foata normal form. 4/6914 useless extension candidates. Maximal degree in co-relation 64000. Up to 6323 conditions per place. [2024-06-27 23:42:35,389 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 478 selfloop transitions, 95 changer transitions 0/583 dead transitions. [2024-06-27 23:42:35,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 583 transitions, 10363 flow [2024-06-27 23:42:35,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:42:35,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:42:35,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 23:42:35,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 23:42:35,393 INFO L175 Difference]: Start difference. First operand has 269 places, 546 transitions, 8590 flow. Second operand 10 states and 175 transitions. [2024-06-27 23:42:35,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 583 transitions, 10363 flow [2024-06-27 23:42:36,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 583 transitions, 10016 flow, removed 80 selfloop flow, removed 6 redundant places. [2024-06-27 23:42:36,408 INFO L231 Difference]: Finished difference. Result has 273 places, 550 transitions, 8661 flow [2024-06-27 23:42:36,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8243, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8661, PETRI_PLACES=273, PETRI_TRANSITIONS=550} [2024-06-27 23:42:36,408 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 230 predicate places. [2024-06-27 23:42:36,408 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 550 transitions, 8661 flow [2024-06-27 23:42:36,409 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 23:42:36,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:36,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:36,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 23:42:36,409 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:42:36,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:36,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1245786926, now seen corresponding path program 12 times [2024-06-27 23:42:36,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:36,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539902497] [2024-06-27 23:42:36,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:36,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:36,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:38,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:38,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:38,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539902497] [2024-06-27 23:42:38,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539902497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:38,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:38,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:42:38,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268647064] [2024-06-27 23:42:38,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:38,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:42:38,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:38,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:42:38,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:42:38,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:42:38,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 550 transitions, 8661 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:38,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:38,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:42:38,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:40,412 INFO L124 PetriNetUnfolderBase]: 4473/6904 cut-off events. [2024-06-27 23:42:40,412 INFO L125 PetriNetUnfolderBase]: For 648735/648735 co-relation queries the response was YES. [2024-06-27 23:42:40,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63660 conditions, 6904 events. 4473/6904 cut-off events. For 648735/648735 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 39574 event pairs, 1705 based on Foata normal form. 4/6903 useless extension candidates. Maximal degree in co-relation 63531. Up to 6404 conditions per place. [2024-06-27 23:42:40,504 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 469 selfloop transitions, 101 changer transitions 0/580 dead transitions. [2024-06-27 23:42:40,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 580 transitions, 9975 flow [2024-06-27 23:42:40,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:42:40,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:42:40,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 23:42:40,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4312169312169312 [2024-06-27 23:42:40,506 INFO L175 Difference]: Start difference. First operand has 273 places, 550 transitions, 8661 flow. Second operand 9 states and 163 transitions. [2024-06-27 23:42:40,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 580 transitions, 9975 flow [2024-06-27 23:42:41,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 580 transitions, 9682 flow, removed 100 selfloop flow, removed 6 redundant places. [2024-06-27 23:42:41,678 INFO L231 Difference]: Finished difference. Result has 276 places, 550 transitions, 8579 flow [2024-06-27 23:42:41,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8368, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8579, PETRI_PLACES=276, PETRI_TRANSITIONS=550} [2024-06-27 23:42:41,679 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 233 predicate places. [2024-06-27 23:42:41,679 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 550 transitions, 8579 flow [2024-06-27 23:42:41,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:41,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:41,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:41,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 23:42:41,680 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:42:41,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:41,680 INFO L85 PathProgramCache]: Analyzing trace with hash -899996514, now seen corresponding path program 13 times [2024-06-27 23:42:41,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:41,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479692630] [2024-06-27 23:42:41,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:41,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:41,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:43,760 INFO 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 23:42:43,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:43,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479692630] [2024-06-27 23:42:43,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479692630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:43,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:43,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:42:43,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521787189] [2024-06-27 23:42:43,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:43,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:42:43,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:43,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:42:43,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:42:43,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:42:43,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 550 transitions, 8579 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:43,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:43,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:42:43,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:45,830 INFO L124 PetriNetUnfolderBase]: 4526/6988 cut-off events. [2024-06-27 23:42:45,830 INFO L125 PetriNetUnfolderBase]: For 662334/662334 co-relation queries the response was YES. [2024-06-27 23:42:45,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64293 conditions, 6988 events. 4526/6988 cut-off events. For 662334/662334 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 40207 event pairs, 1736 based on Foata normal form. 4/6987 useless extension candidates. Maximal degree in co-relation 64162. Up to 6587 conditions per place. [2024-06-27 23:42:45,914 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 515 selfloop transitions, 65 changer transitions 0/590 dead transitions. [2024-06-27 23:42:45,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 590 transitions, 10129 flow [2024-06-27 23:42:45,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:42:45,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:42:45,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-27 23:42:45,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40714285714285714 [2024-06-27 23:42:45,916 INFO L175 Difference]: Start difference. First operand has 276 places, 550 transitions, 8579 flow. Second operand 10 states and 171 transitions. [2024-06-27 23:42:45,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 590 transitions, 10129 flow [2024-06-27 23:42:46,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 590 transitions, 9813 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-27 23:42:46,900 INFO L231 Difference]: Finished difference. Result has 278 places, 562 transitions, 8711 flow [2024-06-27 23:42:46,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8298, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8711, PETRI_PLACES=278, PETRI_TRANSITIONS=562} [2024-06-27 23:42:46,901 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 235 predicate places. [2024-06-27 23:42:46,901 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 562 transitions, 8711 flow [2024-06-27 23:42:46,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:46,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:46,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:46,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 23:42:46,902 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:42:46,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:46,902 INFO L85 PathProgramCache]: Analyzing trace with hash -2028840712, now seen corresponding path program 14 times [2024-06-27 23:42:46,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:46,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938053111] [2024-06-27 23:42:46,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:46,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:46,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:48,999 INFO 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 23:42:48,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:49,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938053111] [2024-06-27 23:42:49,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938053111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:49,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:49,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:49,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453431497] [2024-06-27 23:42:49,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:49,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:49,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:49,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:49,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:49,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:42:49,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 562 transitions, 8711 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 23:42:49,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:49,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:42:49,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:50,994 INFO L124 PetriNetUnfolderBase]: 4554/7031 cut-off events. [2024-06-27 23:42:50,994 INFO L125 PetriNetUnfolderBase]: For 687723/687723 co-relation queries the response was YES. [2024-06-27 23:42:51,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65111 conditions, 7031 events. 4554/7031 cut-off events. For 687723/687723 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 40530 event pairs, 1716 based on Foata normal form. 4/7030 useless extension candidates. Maximal degree in co-relation 64979. Up to 6561 conditions per place. [2024-06-27 23:42:51,090 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 521 selfloop transitions, 65 changer transitions 0/596 dead transitions. [2024-06-27 23:42:51,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 596 transitions, 10167 flow [2024-06-27 23:42:51,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:42:51,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:42:51,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 23:42:51,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-27 23:42:51,092 INFO L175 Difference]: Start difference. First operand has 278 places, 562 transitions, 8711 flow. Second operand 9 states and 162 transitions. [2024-06-27 23:42:51,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 596 transitions, 10167 flow [2024-06-27 23:42:52,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 596 transitions, 9979 flow, removed 50 selfloop flow, removed 7 redundant places. [2024-06-27 23:42:52,252 INFO L231 Difference]: Finished difference. Result has 280 places, 566 transitions, 8797 flow [2024-06-27 23:42:52,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8523, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8797, PETRI_PLACES=280, PETRI_TRANSITIONS=566} [2024-06-27 23:42:52,253 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 237 predicate places. [2024-06-27 23:42:52,253 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 566 transitions, 8797 flow [2024-06-27 23:42:52,253 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 23:42:52,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:52,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:52,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 23:42:52,254 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:42:52,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:52,254 INFO L85 PathProgramCache]: Analyzing trace with hash -643294194, now seen corresponding path program 15 times [2024-06-27 23:42:52,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:52,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875390150] [2024-06-27 23:42:52,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:52,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:52,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:54,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:54,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:54,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875390150] [2024-06-27 23:42:54,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875390150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:54,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:54,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:54,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086794932] [2024-06-27 23:42:54,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:54,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:54,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:54,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:54,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:54,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:42:54,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 566 transitions, 8797 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 23:42:54,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:54,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:42:54,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:56,430 INFO L124 PetriNetUnfolderBase]: 4571/7062 cut-off events. [2024-06-27 23:42:56,431 INFO L125 PetriNetUnfolderBase]: For 710830/710830 co-relation queries the response was YES. [2024-06-27 23:42:56,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65777 conditions, 7062 events. 4571/7062 cut-off events. For 710830/710830 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 40833 event pairs, 1733 based on Foata normal form. 4/7061 useless extension candidates. Maximal degree in co-relation 65644. Up to 6718 conditions per place. [2024-06-27 23:42:56,512 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 541 selfloop transitions, 47 changer transitions 0/598 dead transitions. [2024-06-27 23:42:56,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 598 transitions, 10263 flow [2024-06-27 23:42:56,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:42:56,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:42:56,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 23:42:56,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4312169312169312 [2024-06-27 23:42:56,514 INFO L175 Difference]: Start difference. First operand has 280 places, 566 transitions, 8797 flow. Second operand 9 states and 163 transitions. [2024-06-27 23:42:56,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 598 transitions, 10263 flow [2024-06-27 23:42:57,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 598 transitions, 10031 flow, removed 54 selfloop flow, removed 7 redundant places. [2024-06-27 23:42:57,638 INFO L231 Difference]: Finished difference. Result has 282 places, 568 transitions, 8790 flow [2024-06-27 23:42:57,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8565, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=519, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8790, PETRI_PLACES=282, PETRI_TRANSITIONS=568} [2024-06-27 23:42:57,639 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 239 predicate places. [2024-06-27 23:42:57,639 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 568 transitions, 8790 flow [2024-06-27 23:42:57,639 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 23:42:57,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:57,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:57,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 23:42:57,640 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:42:57,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:57,641 INFO L85 PathProgramCache]: Analyzing trace with hash -643286754, now seen corresponding path program 16 times [2024-06-27 23:42:57,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:57,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921412773] [2024-06-27 23:42:57,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:57,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:57,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:59,736 INFO 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 23:42:59,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:59,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921412773] [2024-06-27 23:42:59,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921412773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:59,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:59,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:59,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005527498] [2024-06-27 23:42:59,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:59,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:59,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:59,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:59,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:59,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:42:59,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 568 transitions, 8790 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 23:42:59,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:59,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:42:59,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:01,817 INFO L124 PetriNetUnfolderBase]: 4588/7089 cut-off events. [2024-06-27 23:43:01,818 INFO L125 PetriNetUnfolderBase]: For 732883/732883 co-relation queries the response was YES. [2024-06-27 23:43:01,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66288 conditions, 7089 events. 4588/7089 cut-off events. For 732883/732883 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 41026 event pairs, 1733 based on Foata normal form. 4/7088 useless extension candidates. Maximal degree in co-relation 66154. Up to 6704 conditions per place. [2024-06-27 23:43:01,910 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 548 selfloop transitions, 47 changer transitions 0/605 dead transitions. [2024-06-27 23:43:01,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 605 transitions, 10298 flow [2024-06-27 23:43:01,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:43:01,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:43:01,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-27 23:43:01,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4238095238095238 [2024-06-27 23:43:01,911 INFO L175 Difference]: Start difference. First operand has 282 places, 568 transitions, 8790 flow. Second operand 10 states and 178 transitions. [2024-06-27 23:43:01,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 605 transitions, 10298 flow [2024-06-27 23:43:03,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 605 transitions, 10091 flow, removed 58 selfloop flow, removed 7 redundant places. [2024-06-27 23:43:03,140 INFO L231 Difference]: Finished difference. Result has 285 places, 570 transitions, 8812 flow [2024-06-27 23:43:03,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8583, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8812, PETRI_PLACES=285, PETRI_TRANSITIONS=570} [2024-06-27 23:43:03,140 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 242 predicate places. [2024-06-27 23:43:03,140 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 570 transitions, 8812 flow [2024-06-27 23:43:03,141 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 23:43:03,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:03,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:03,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 23:43:03,141 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:43:03,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:03,141 INFO L85 PathProgramCache]: Analyzing trace with hash -634089984, now seen corresponding path program 17 times [2024-06-27 23:43:03,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:03,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093489060] [2024-06-27 23:43:03,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:03,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:03,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:04,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:04,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:04,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093489060] [2024-06-27 23:43:04,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093489060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:04,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:04,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:43:04,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350176948] [2024-06-27 23:43:04,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:04,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:43:04,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:04,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:43:04,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:43:05,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:43:05,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 570 transitions, 8812 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 23:43:05,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:05,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:43:05,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:06,857 INFO L124 PetriNetUnfolderBase]: 4580/7072 cut-off events. [2024-06-27 23:43:06,857 INFO L125 PetriNetUnfolderBase]: For 740805/740805 co-relation queries the response was YES. [2024-06-27 23:43:06,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65881 conditions, 7072 events. 4580/7072 cut-off events. For 740805/740805 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 40782 event pairs, 1727 based on Foata normal form. 4/7071 useless extension candidates. Maximal degree in co-relation 65746. Up to 6755 conditions per place. [2024-06-27 23:43:06,954 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 569 selfloop transitions, 25 changer transitions 0/604 dead transitions. [2024-06-27 23:43:06,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 604 transitions, 10280 flow [2024-06-27 23:43:06,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:43:06,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:43:06,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 23:43:06,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3961038961038961 [2024-06-27 23:43:06,956 INFO L175 Difference]: Start difference. First operand has 285 places, 570 transitions, 8812 flow. Second operand 11 states and 183 transitions. [2024-06-27 23:43:06,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 604 transitions, 10280 flow [2024-06-27 23:43:08,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 604 transitions, 10069 flow, removed 60 selfloop flow, removed 8 redundant places. [2024-06-27 23:43:08,296 INFO L231 Difference]: Finished difference. Result has 288 places, 572 transitions, 8790 flow [2024-06-27 23:43:08,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8601, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8790, PETRI_PLACES=288, PETRI_TRANSITIONS=572} [2024-06-27 23:43:08,297 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 245 predicate places. [2024-06-27 23:43:08,297 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 572 transitions, 8790 flow [2024-06-27 23:43:08,297 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 23:43:08,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:08,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:08,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 23:43:08,297 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:43:08,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:08,298 INFO L85 PathProgramCache]: Analyzing trace with hash -508067462, now seen corresponding path program 3 times [2024-06-27 23:43:08,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:08,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262604479] [2024-06-27 23:43:08,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:08,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:08,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:09,699 INFO 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 23:43:09,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:09,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262604479] [2024-06-27 23:43:09,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262604479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:09,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:09,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:43:09,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718703780] [2024-06-27 23:43:09,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:09,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:43:09,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:09,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:43:09,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:43:09,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:43:09,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 572 transitions, 8790 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:09,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:09,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:43:09,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:11,649 INFO L124 PetriNetUnfolderBase]: 4419/6858 cut-off events. [2024-06-27 23:43:11,650 INFO L125 PetriNetUnfolderBase]: For 759300/759381 co-relation queries the response was YES. [2024-06-27 23:43:11,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64500 conditions, 6858 events. 4419/6858 cut-off events. For 759300/759381 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 39929 event pairs, 1736 based on Foata normal form. 48/6832 useless extension candidates. Maximal degree in co-relation 64364. Up to 6553 conditions per place. [2024-06-27 23:43:11,729 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 524 selfloop transitions, 16 changer transitions 0/584 dead transitions. [2024-06-27 23:43:11,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 584 transitions, 9978 flow [2024-06-27 23:43:11,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:43:11,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:43:11,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-06-27 23:43:11,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391156462585034 [2024-06-27 23:43:11,730 INFO L175 Difference]: Start difference. First operand has 288 places, 572 transitions, 8790 flow. Second operand 7 states and 115 transitions. [2024-06-27 23:43:11,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 584 transitions, 9978 flow [2024-06-27 23:43:12,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 584 transitions, 9807 flow, removed 62 selfloop flow, removed 9 redundant places. [2024-06-27 23:43:12,994 INFO L231 Difference]: Finished difference. Result has 286 places, 575 transitions, 8737 flow [2024-06-27 23:43:12,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8619, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8737, PETRI_PLACES=286, PETRI_TRANSITIONS=575} [2024-06-27 23:43:12,995 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 243 predicate places. [2024-06-27 23:43:12,995 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 575 transitions, 8737 flow [2024-06-27 23:43:12,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:12,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:12,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:12,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 23:43:12,995 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:43:12,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:12,995 INFO L85 PathProgramCache]: Analyzing trace with hash -508483172, now seen corresponding path program 4 times [2024-06-27 23:43:12,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:12,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090962575] [2024-06-27 23:43:12,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:12,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:13,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:14,576 INFO 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 23:43:14,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:14,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090962575] [2024-06-27 23:43:14,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090962575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:14,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:14,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:43:14,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149294693] [2024-06-27 23:43:14,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:14,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:43:14,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:14,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:43:14,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:43:14,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:43:14,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 575 transitions, 8737 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:14,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:14,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:43:14,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:16,329 INFO L124 PetriNetUnfolderBase]: 4415/6847 cut-off events. [2024-06-27 23:43:16,329 INFO L125 PetriNetUnfolderBase]: For 765931/766012 co-relation queries the response was YES. [2024-06-27 23:43:16,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64077 conditions, 6847 events. 4415/6847 cut-off events. For 765931/766012 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 39783 event pairs, 1735 based on Foata normal form. 47/6814 useless extension candidates. Maximal degree in co-relation 63940. Up to 6542 conditions per place. [2024-06-27 23:43:16,416 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 519 selfloop transitions, 21 changer transitions 0/584 dead transitions. [2024-06-27 23:43:16,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 584 transitions, 9851 flow [2024-06-27 23:43:16,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:43:16,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:43:16,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-06-27 23:43:16,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3979591836734694 [2024-06-27 23:43:16,417 INFO L175 Difference]: Start difference. First operand has 286 places, 575 transitions, 8737 flow. Second operand 7 states and 117 transitions. [2024-06-27 23:43:16,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 584 transitions, 9851 flow [2024-06-27 23:43:17,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 584 transitions, 9721 flow, removed 51 selfloop flow, removed 5 redundant places. [2024-06-27 23:43:17,807 INFO L231 Difference]: Finished difference. Result has 288 places, 575 transitions, 8655 flow [2024-06-27 23:43:17,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8607, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=554, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8655, PETRI_PLACES=288, PETRI_TRANSITIONS=575} [2024-06-27 23:43:17,808 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 245 predicate places. [2024-06-27 23:43:17,808 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 575 transitions, 8655 flow [2024-06-27 23:43:17,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:17,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:17,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:17,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 23:43:17,809 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:43:17,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:17,809 INFO L85 PathProgramCache]: Analyzing trace with hash -685550336, now seen corresponding path program 1 times [2024-06-27 23:43:17,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:17,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786359158] [2024-06-27 23:43:17,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:17,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:17,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:19,928 INFO 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 23:43:19,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:19,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786359158] [2024-06-27 23:43:19,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786359158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:19,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:19,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:43:19,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724113264] [2024-06-27 23:43:19,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:19,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:43:19,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:19,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:43:19,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:43:20,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:43:20,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 575 transitions, 8655 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:20,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:20,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:43:20,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:21,959 INFO L124 PetriNetUnfolderBase]: 4599/7099 cut-off events. [2024-06-27 23:43:21,959 INFO L125 PetriNetUnfolderBase]: For 777842/777842 co-relation queries the response was YES. [2024-06-27 23:43:22,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65830 conditions, 7099 events. 4599/7099 cut-off events. For 777842/777842 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 40965 event pairs, 1766 based on Foata normal form. 2/7096 useless extension candidates. Maximal degree in co-relation 65692. Up to 6833 conditions per place. [2024-06-27 23:43:22,054 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 561 selfloop transitions, 24 changer transitions 0/596 dead transitions. [2024-06-27 23:43:22,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 596 transitions, 9971 flow [2024-06-27 23:43:22,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:43:22,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:43:22,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-27 23:43:22,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39880952380952384 [2024-06-27 23:43:22,055 INFO L175 Difference]: Start difference. First operand has 288 places, 575 transitions, 8655 flow. Second operand 8 states and 134 transitions. [2024-06-27 23:43:22,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 596 transitions, 9971 flow [2024-06-27 23:43:23,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 596 transitions, 9889 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 23:43:23,317 INFO L231 Difference]: Finished difference. Result has 290 places, 581 transitions, 8704 flow [2024-06-27 23:43:23,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8573, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8704, PETRI_PLACES=290, PETRI_TRANSITIONS=581} [2024-06-27 23:43:23,317 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 247 predicate places. [2024-06-27 23:43:23,317 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 581 transitions, 8704 flow [2024-06-27 23:43:23,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:23,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:23,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:23,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 23:43:23,318 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:43:23,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:23,318 INFO L85 PathProgramCache]: Analyzing trace with hash -685430180, now seen corresponding path program 1 times [2024-06-27 23:43:23,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:23,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163822975] [2024-06-27 23:43:23,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:23,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:23,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:25,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:25,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:25,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163822975] [2024-06-27 23:43:25,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163822975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:25,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:25,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:43:25,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146885524] [2024-06-27 23:43:25,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:25,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:43:25,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:25,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:43:25,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:43:25,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-27 23:43:25,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 581 transitions, 8704 flow. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 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 23:43:25,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:25,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-27 23:43:25,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:27,532 INFO L124 PetriNetUnfolderBase]: 4708/7210 cut-off events. [2024-06-27 23:43:27,532 INFO L125 PetriNetUnfolderBase]: For 789109/789109 co-relation queries the response was YES. [2024-06-27 23:43:27,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67316 conditions, 7210 events. 4708/7210 cut-off events. For 789109/789109 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 41000 event pairs, 1827 based on Foata normal form. 1/7210 useless extension candidates. Maximal degree in co-relation 67177. Up to 7063 conditions per place. [2024-06-27 23:43:27,618 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 565 selfloop transitions, 31 changer transitions 0/599 dead transitions. [2024-06-27 23:43:27,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 599 transitions, 10154 flow [2024-06-27 23:43:27,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:43:27,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:43:27,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-06-27 23:43:27,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3979591836734694 [2024-06-27 23:43:27,619 INFO L175 Difference]: Start difference. First operand has 290 places, 581 transitions, 8704 flow. Second operand 7 states and 117 transitions. [2024-06-27 23:43:27,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 599 transitions, 10154 flow [2024-06-27 23:43:28,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 599 transitions, 10085 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 23:43:28,714 INFO L231 Difference]: Finished difference. Result has 291 places, 587 transitions, 8788 flow [2024-06-27 23:43:28,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8635, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8788, PETRI_PLACES=291, PETRI_TRANSITIONS=587} [2024-06-27 23:43:28,714 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 248 predicate places. [2024-06-27 23:43:28,714 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 587 transitions, 8788 flow [2024-06-27 23:43:28,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 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 23:43:28,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:28,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:28,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 23:43:28,715 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:43:28,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:28,715 INFO L85 PathProgramCache]: Analyzing trace with hash -685430366, now seen corresponding path program 2 times [2024-06-27 23:43:28,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:28,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624192210] [2024-06-27 23:43:28,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:28,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:28,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:30,805 INFO 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 23:43:30,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:30,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624192210] [2024-06-27 23:43:30,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624192210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:30,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:30,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:43:30,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255223910] [2024-06-27 23:43:30,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:30,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:43:30,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:30,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:43:30,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:43:30,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:43:30,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 587 transitions, 8788 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:30,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:30,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:43:30,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:33,014 INFO L124 PetriNetUnfolderBase]: 4610/7116 cut-off events. [2024-06-27 23:43:33,014 INFO L125 PetriNetUnfolderBase]: For 808334/808334 co-relation queries the response was YES. [2024-06-27 23:43:33,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67152 conditions, 7116 events. 4610/7116 cut-off events. For 808334/808334 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 41008 event pairs, 1764 based on Foata normal form. 2/7117 useless extension candidates. Maximal degree in co-relation 67011. Up to 6814 conditions per place. [2024-06-27 23:43:33,111 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 561 selfloop transitions, 35 changer transitions 0/609 dead transitions. [2024-06-27 23:43:33,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 609 transitions, 10344 flow [2024-06-27 23:43:33,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:43:33,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:43:33,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-27 23:43:33,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-27 23:43:33,112 INFO L175 Difference]: Start difference. First operand has 291 places, 587 transitions, 8788 flow. Second operand 7 states and 126 transitions. [2024-06-27 23:43:33,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 609 transitions, 10344 flow [2024-06-27 23:43:34,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 609 transitions, 10281 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-27 23:43:34,769 INFO L231 Difference]: Finished difference. Result has 294 places, 593 transitions, 8898 flow [2024-06-27 23:43:34,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8725, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=555, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8898, PETRI_PLACES=294, PETRI_TRANSITIONS=593} [2024-06-27 23:43:34,770 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 251 predicate places. [2024-06-27 23:43:34,770 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 593 transitions, 8898 flow [2024-06-27 23:43:34,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:34,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:34,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:34,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 23:43:34,771 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:43:34,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:34,771 INFO L85 PathProgramCache]: Analyzing trace with hash 819787456, now seen corresponding path program 3 times [2024-06-27 23:43:34,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:34,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936260676] [2024-06-27 23:43:34,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:34,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:34,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:36,849 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 23:43:36,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:36,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936260676] [2024-06-27 23:43:36,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936260676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:36,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:36,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:43:36,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311478985] [2024-06-27 23:43:36,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:36,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:43:36,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:36,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:43:36,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:43:36,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:43:36,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 593 transitions, 8898 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:36,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:36,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:43:36,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:39,007 INFO L124 PetriNetUnfolderBase]: 4604/7109 cut-off events. [2024-06-27 23:43:39,007 INFO L125 PetriNetUnfolderBase]: For 824753/824753 co-relation queries the response was YES. [2024-06-27 23:43:39,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67658 conditions, 7109 events. 4604/7109 cut-off events. For 824753/824753 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 40962 event pairs, 1743 based on Foata normal form. 2/7110 useless extension candidates. Maximal degree in co-relation 67514. Up to 6809 conditions per place. [2024-06-27 23:43:39,090 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 557 selfloop transitions, 34 changer transitions 0/604 dead transitions. [2024-06-27 23:43:39,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 604 transitions, 10166 flow [2024-06-27 23:43:39,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:43:39,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:43:39,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-27 23:43:39,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41496598639455784 [2024-06-27 23:43:39,090 INFO L175 Difference]: Start difference. First operand has 294 places, 593 transitions, 8898 flow. Second operand 7 states and 122 transitions. [2024-06-27 23:43:39,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 604 transitions, 10166 flow [2024-06-27 23:43:40,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 604 transitions, 10110 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-27 23:43:40,538 INFO L231 Difference]: Finished difference. Result has 298 places, 593 transitions, 8918 flow [2024-06-27 23:43:40,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8842, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=559, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8918, PETRI_PLACES=298, PETRI_TRANSITIONS=593} [2024-06-27 23:43:40,539 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 255 predicate places. [2024-06-27 23:43:40,539 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 593 transitions, 8918 flow [2024-06-27 23:43:40,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:40,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:40,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:40,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 23:43:40,539 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:43:40,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:40,540 INFO L85 PathProgramCache]: Analyzing trace with hash 349029082, now seen corresponding path program 2 times [2024-06-27 23:43:40,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:40,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417731927] [2024-06-27 23:43:40,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:40,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:40,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:42,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:42,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:42,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417731927] [2024-06-27 23:43:42,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417731927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:42,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:42,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:43:42,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860763329] [2024-06-27 23:43:42,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:42,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:43:42,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:42,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:43:42,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:43:42,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-27 23:43:42,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 593 transitions, 8918 flow. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 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 23:43:42,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:42,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-27 23:43:42,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:44,647 INFO L124 PetriNetUnfolderBase]: 4717/7223 cut-off events. [2024-06-27 23:43:44,648 INFO L125 PetriNetUnfolderBase]: For 845678/845682 co-relation queries the response was YES. [2024-06-27 23:43:44,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68995 conditions, 7223 events. 4717/7223 cut-off events. For 845678/845682 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 41056 event pairs, 1797 based on Foata normal form. 5/7227 useless extension candidates. Maximal degree in co-relation 68847. Up to 7075 conditions per place. [2024-06-27 23:43:44,746 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 568 selfloop transitions, 35 changer transitions 0/606 dead transitions. [2024-06-27 23:43:44,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 606 transitions, 10340 flow [2024-06-27 23:43:44,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:43:44,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:43:44,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-06-27 23:43:44,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3843537414965986 [2024-06-27 23:43:44,747 INFO L175 Difference]: Start difference. First operand has 298 places, 593 transitions, 8918 flow. Second operand 7 states and 113 transitions. [2024-06-27 23:43:44,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 606 transitions, 10340 flow [2024-06-27 23:43:46,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 606 transitions, 10267 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 23:43:46,551 INFO L231 Difference]: Finished difference. Result has 300 places, 596 transitions, 8957 flow [2024-06-27 23:43:46,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8845, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=561, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8957, PETRI_PLACES=300, PETRI_TRANSITIONS=596} [2024-06-27 23:43:46,552 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 257 predicate places. [2024-06-27 23:43:46,552 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 596 transitions, 8957 flow [2024-06-27 23:43:46,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 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 23:43:46,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:46,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:46,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 23:43:46,552 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:43:46,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:46,553 INFO L85 PathProgramCache]: Analyzing trace with hash -508298660, now seen corresponding path program 3 times [2024-06-27 23:43:46,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:46,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118660867] [2024-06-27 23:43:46,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:46,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:46,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:48,672 INFO 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 23:43:48,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:48,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118660867] [2024-06-27 23:43:48,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118660867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:48,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:48,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:43:48,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994283226] [2024-06-27 23:43:48,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:48,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:43:48,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:48,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:43:48,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:43:48,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-27 23:43:48,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 596 transitions, 8957 flow. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 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 23:43:48,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:48,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-27 23:43:48,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:50,681 INFO L124 PetriNetUnfolderBase]: 4714/7219 cut-off events. [2024-06-27 23:43:50,681 INFO L125 PetriNetUnfolderBase]: For 861759/861763 co-relation queries the response was YES. [2024-06-27 23:43:50,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69135 conditions, 7219 events. 4714/7219 cut-off events. For 861759/861763 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 41042 event pairs, 1797 based on Foata normal form. 5/7223 useless extension candidates. Maximal degree in co-relation 68985. Up to 7072 conditions per place. [2024-06-27 23:43:50,780 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 569 selfloop transitions, 33 changer transitions 0/605 dead transitions. [2024-06-27 23:43:50,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 605 transitions, 10195 flow [2024-06-27 23:43:50,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:43:50,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:43:50,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-06-27 23:43:50,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3843537414965986 [2024-06-27 23:43:50,782 INFO L175 Difference]: Start difference. First operand has 300 places, 596 transitions, 8957 flow. Second operand 7 states and 113 transitions. [2024-06-27 23:43:50,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 605 transitions, 10195 flow [2024-06-27 23:43:52,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 605 transitions, 10096 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-27 23:43:52,734 INFO L231 Difference]: Finished difference. Result has 303 places, 596 transitions, 8932 flow [2024-06-27 23:43:52,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8858, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=596, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=563, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8932, PETRI_PLACES=303, PETRI_TRANSITIONS=596} [2024-06-27 23:43:52,735 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 260 predicate places. [2024-06-27 23:43:52,735 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 596 transitions, 8932 flow [2024-06-27 23:43:52,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 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 23:43:52,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:52,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:52,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 23:43:52,736 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:43:52,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:52,737 INFO L85 PathProgramCache]: Analyzing trace with hash 349038010, now seen corresponding path program 1 times [2024-06-27 23:43:52,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:52,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171900661] [2024-06-27 23:43:52,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:52,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:52,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:54,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:54,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:54,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171900661] [2024-06-27 23:43:54,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171900661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:54,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:54,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:43:54,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384582017] [2024-06-27 23:43:54,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:54,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:43:54,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:54,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:43:54,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:43:55,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:43:55,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 596 transitions, 8932 flow. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:55,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:55,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:43:55,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:56,903 INFO L124 PetriNetUnfolderBase]: 4429/6870 cut-off events. [2024-06-27 23:43:56,904 INFO L125 PetriNetUnfolderBase]: For 893283/893352 co-relation queries the response was YES. [2024-06-27 23:43:56,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66918 conditions, 6870 events. 4429/6870 cut-off events. For 893283/893352 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 39917 event pairs, 1731 based on Foata normal form. 48/6838 useless extension candidates. Maximal degree in co-relation 66765. Up to 6571 conditions per place. [2024-06-27 23:43:56,998 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 547 selfloop transitions, 19 changer transitions 0/610 dead transitions. [2024-06-27 23:43:56,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 610 transitions, 10146 flow [2024-06-27 23:43:56,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:43:56,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:43:56,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2024-06-27 23:43:56,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36507936507936506 [2024-06-27 23:43:56,999 INFO L175 Difference]: Start difference. First operand has 303 places, 596 transitions, 8932 flow. Second operand 9 states and 138 transitions. [2024-06-27 23:43:56,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 610 transitions, 10146 flow [2024-06-27 23:43:58,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 610 transitions, 10105 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 23:43:58,720 INFO L231 Difference]: Finished difference. Result has 309 places, 599 transitions, 8985 flow [2024-06-27 23:43:58,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8891, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=596, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=577, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8985, PETRI_PLACES=309, PETRI_TRANSITIONS=599} [2024-06-27 23:43:58,721 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 266 predicate places. [2024-06-27 23:43:58,721 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 599 transitions, 8985 flow [2024-06-27 23:43:58,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:58,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:58,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:58,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 23:43:58,721 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:43:58,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:58,722 INFO L85 PathProgramCache]: Analyzing trace with hash -433559807, now seen corresponding path program 1 times [2024-06-27 23:43:58,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:58,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464864385] [2024-06-27 23:43:58,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:58,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:02,131 INFO 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 23:44:02,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:02,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464864385] [2024-06-27 23:44:02,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464864385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:02,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:02,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:44:02,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624120508] [2024-06-27 23:44:02,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:02,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:44:02,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:02,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:44:02,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:44:02,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:44:02,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 599 transitions, 8985 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 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 23:44:02,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:02,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:44:02,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:05,359 INFO L124 PetriNetUnfolderBase]: 4668/7220 cut-off events. [2024-06-27 23:44:05,359 INFO L125 PetriNetUnfolderBase]: For 932729/932732 co-relation queries the response was YES. [2024-06-27 23:44:05,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69471 conditions, 7220 events. 4668/7220 cut-off events. For 932729/932732 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 41813 event pairs, 1472 based on Foata normal form. 20/7239 useless extension candidates. Maximal degree in co-relation 69316. Up to 6586 conditions per place. [2024-06-27 23:44:05,460 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 517 selfloop transitions, 121 changer transitions 0/652 dead transitions. [2024-06-27 23:44:05,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 652 transitions, 10593 flow [2024-06-27 23:44:05,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 23:44:05,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 23:44:05,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 231 transitions. [2024-06-27 23:44:05,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4230769230769231 [2024-06-27 23:44:05,462 INFO L175 Difference]: Start difference. First operand has 309 places, 599 transitions, 8985 flow. Second operand 13 states and 231 transitions. [2024-06-27 23:44:05,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 652 transitions, 10593 flow [2024-06-27 23:44:07,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 652 transitions, 10521 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-27 23:44:07,473 INFO L231 Difference]: Finished difference. Result has 315 places, 601 transitions, 9240 flow [2024-06-27 23:44:07,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8913, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9240, PETRI_PLACES=315, PETRI_TRANSITIONS=601} [2024-06-27 23:44:07,473 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 272 predicate places. [2024-06-27 23:44:07,473 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 601 transitions, 9240 flow [2024-06-27 23:44:07,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 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 23:44:07,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:07,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:07,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 23:44:07,474 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:44:07,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:07,474 INFO L85 PathProgramCache]: Analyzing trace with hash -171044579, now seen corresponding path program 1 times [2024-06-27 23:44:07,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:07,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385408276] [2024-06-27 23:44:07,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:07,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:07,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:10,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:10,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:10,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385408276] [2024-06-27 23:44:10,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385408276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:10,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:10,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:44:10,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180872188] [2024-06-27 23:44:10,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:10,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:44:10,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:10,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:44:10,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:44:10,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-27 23:44:10,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 601 transitions, 9240 flow. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:10,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:10,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-27 23:44:10,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:12,273 INFO L124 PetriNetUnfolderBase]: 4677/7226 cut-off events. [2024-06-27 23:44:12,273 INFO L125 PetriNetUnfolderBase]: For 918585/918595 co-relation queries the response was YES. [2024-06-27 23:44:12,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70345 conditions, 7226 events. 4677/7226 cut-off events. For 918585/918595 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 41883 event pairs, 1520 based on Foata normal form. 7/7226 useless extension candidates. Maximal degree in co-relation 70189. Up to 6842 conditions per place. [2024-06-27 23:44:12,367 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 563 selfloop transitions, 64 changer transitions 0/641 dead transitions. [2024-06-27 23:44:12,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 641 transitions, 10916 flow [2024-06-27 23:44:12,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:44:12,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:44:12,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-27 23:44:12,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47023809523809523 [2024-06-27 23:44:12,368 INFO L175 Difference]: Start difference. First operand has 315 places, 601 transitions, 9240 flow. Second operand 8 states and 158 transitions. [2024-06-27 23:44:12,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 641 transitions, 10916 flow [2024-06-27 23:44:14,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 641 transitions, 10652 flow, removed 26 selfloop flow, removed 10 redundant places. [2024-06-27 23:44:14,399 INFO L231 Difference]: Finished difference. Result has 314 places, 615 transitions, 9287 flow [2024-06-27 23:44:14,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8976, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=550, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9287, PETRI_PLACES=314, PETRI_TRANSITIONS=615} [2024-06-27 23:44:14,399 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 271 predicate places. [2024-06-27 23:44:14,399 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 615 transitions, 9287 flow [2024-06-27 23:44:14,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:14,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:14,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:14,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 23:44:14,400 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:44:14,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:14,400 INFO L85 PathProgramCache]: Analyzing trace with hash 391393381, now seen corresponding path program 2 times [2024-06-27 23:44:14,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:14,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148947266] [2024-06-27 23:44:14,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:14,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:17,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:17,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:17,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148947266] [2024-06-27 23:44:17,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148947266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:17,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:17,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:44:17,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052801803] [2024-06-27 23:44:17,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:17,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:44:17,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:17,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:44:17,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:44:17,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-27 23:44:17,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 615 transitions, 9287 flow. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:17,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:17,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-27 23:44:17,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:19,296 INFO L124 PetriNetUnfolderBase]: 4695/7253 cut-off events. [2024-06-27 23:44:19,296 INFO L125 PetriNetUnfolderBase]: For 934285/934289 co-relation queries the response was YES. [2024-06-27 23:44:19,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70418 conditions, 7253 events. 4695/7253 cut-off events. For 934285/934289 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 42040 event pairs, 1538 based on Foata normal form. 3/7252 useless extension candidates. Maximal degree in co-relation 70260. Up to 6913 conditions per place. [2024-06-27 23:44:19,390 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 566 selfloop transitions, 67 changer transitions 0/647 dead transitions. [2024-06-27 23:44:19,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 647 transitions, 10789 flow [2024-06-27 23:44:19,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:44:19,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:44:19,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-27 23:44:19,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-27 23:44:19,391 INFO L175 Difference]: Start difference. First operand has 314 places, 615 transitions, 9287 flow. Second operand 8 states and 150 transitions. [2024-06-27 23:44:19,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 647 transitions, 10789 flow [2024-06-27 23:44:21,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 647 transitions, 10679 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-27 23:44:21,056 INFO L231 Difference]: Finished difference. Result has 319 places, 627 transitions, 9473 flow [2024-06-27 23:44:21,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9190, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9473, PETRI_PLACES=319, PETRI_TRANSITIONS=627} [2024-06-27 23:44:21,057 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 276 predicate places. [2024-06-27 23:44:21,057 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 627 transitions, 9473 flow [2024-06-27 23:44:21,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:21,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:21,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:21,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 23:44:21,058 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:44:21,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:21,058 INFO L85 PathProgramCache]: Analyzing trace with hash 524268929, now seen corresponding path program 2 times [2024-06-27 23:44:21,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:21,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360116646] [2024-06-27 23:44:21,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:21,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:21,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:24,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:24,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:24,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360116646] [2024-06-27 23:44:24,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360116646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:24,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:24,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:44:24,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649117719] [2024-06-27 23:44:24,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:24,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:44:24,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:24,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:44:24,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:44:25,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-27 23:44:25,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 627 transitions, 9473 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:25,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:25,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-27 23:44:25,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:27,202 INFO L124 PetriNetUnfolderBase]: 4660/7204 cut-off events. [2024-06-27 23:44:27,202 INFO L125 PetriNetUnfolderBase]: For 949173/949176 co-relation queries the response was YES. [2024-06-27 23:44:27,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68881 conditions, 7204 events. 4660/7204 cut-off events. For 949173/949176 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 41693 event pairs, 1417 based on Foata normal form. 20/7223 useless extension candidates. Maximal degree in co-relation 68722. Up to 6342 conditions per place. [2024-06-27 23:44:27,300 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 521 selfloop transitions, 134 changer transitions 0/669 dead transitions. [2024-06-27 23:44:27,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 669 transitions, 11034 flow [2024-06-27 23:44:27,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:44:27,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:44:27,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-27 23:44:27,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-27 23:44:27,301 INFO L175 Difference]: Start difference. First operand has 319 places, 627 transitions, 9473 flow. Second operand 10 states and 190 transitions. [2024-06-27 23:44:27,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 669 transitions, 11034 flow [2024-06-27 23:44:29,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 669 transitions, 10834 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-27 23:44:29,571 INFO L231 Difference]: Finished difference. Result has 323 places, 627 transitions, 9561 flow [2024-06-27 23:44:29,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9273, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9561, PETRI_PLACES=323, PETRI_TRANSITIONS=627} [2024-06-27 23:44:29,572 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 280 predicate places. [2024-06-27 23:44:29,572 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 627 transitions, 9561 flow [2024-06-27 23:44:29,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:29,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:29,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:29,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 23:44:29,572 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:44:29,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:29,572 INFO L85 PathProgramCache]: Analyzing trace with hash 16297111, now seen corresponding path program 1 times [2024-06-27 23:44:29,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:29,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516102499] [2024-06-27 23:44:29,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:29,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:29,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:31,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:31,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:31,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516102499] [2024-06-27 23:44:31,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516102499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:31,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:31,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:44:31,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799194339] [2024-06-27 23:44:31,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:31,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:44:31,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:31,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:44:31,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:44:31,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:44:31,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 627 transitions, 9561 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:31,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:31,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:44:31,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:33,543 INFO L124 PetriNetUnfolderBase]: 4681/7232 cut-off events. [2024-06-27 23:44:33,543 INFO L125 PetriNetUnfolderBase]: For 928621/928628 co-relation queries the response was YES. [2024-06-27 23:44:33,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69491 conditions, 7232 events. 4681/7232 cut-off events. For 928621/928628 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 41971 event pairs, 1440 based on Foata normal form. 7/7238 useless extension candidates. Maximal degree in co-relation 69332. Up to 6865 conditions per place. [2024-06-27 23:44:33,640 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 591 selfloop transitions, 62 changer transitions 0/667 dead transitions. [2024-06-27 23:44:33,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 667 transitions, 11675 flow [2024-06-27 23:44:33,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:44:33,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:44:33,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-06-27 23:44:33,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47959183673469385 [2024-06-27 23:44:33,641 INFO L175 Difference]: Start difference. First operand has 323 places, 627 transitions, 9561 flow. Second operand 7 states and 141 transitions. [2024-06-27 23:44:33,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 667 transitions, 11675 flow [2024-06-27 23:44:35,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 667 transitions, 11278 flow, removed 34 selfloop flow, removed 10 redundant places. [2024-06-27 23:44:35,577 INFO L231 Difference]: Finished difference. Result has 321 places, 643 transitions, 9575 flow [2024-06-27 23:44:35,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9182, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=577, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9575, PETRI_PLACES=321, PETRI_TRANSITIONS=643} [2024-06-27 23:44:35,578 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 278 predicate places. [2024-06-27 23:44:35,578 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 643 transitions, 9575 flow [2024-06-27 23:44:35,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:35,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:35,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:35,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 23:44:35,578 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:44:35,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:35,580 INFO L85 PathProgramCache]: Analyzing trace with hash -183832617, now seen corresponding path program 3 times [2024-06-27 23:44:35,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:35,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798176089] [2024-06-27 23:44:35,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:35,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:35,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:39,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:39,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:39,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798176089] [2024-06-27 23:44:39,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798176089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:39,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:39,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:44:39,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605141962] [2024-06-27 23:44:39,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:39,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:44:39,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:39,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:44:39,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:44:39,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-27 23:44:39,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 643 transitions, 9575 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:39,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:39,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-27 23:44:39,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:42,118 INFO L124 PetriNetUnfolderBase]: 4722/7316 cut-off events. [2024-06-27 23:44:42,119 INFO L125 PetriNetUnfolderBase]: For 915824/915829 co-relation queries the response was YES. [2024-06-27 23:44:42,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69071 conditions, 7316 events. 4722/7316 cut-off events. For 915824/915829 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 42728 event pairs, 1307 based on Foata normal form. 16/7331 useless extension candidates. Maximal degree in co-relation 68913. Up to 6169 conditions per place. [2024-06-27 23:44:42,213 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 400 selfloop transitions, 282 changer transitions 0/696 dead transitions. [2024-06-27 23:44:42,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 696 transitions, 11446 flow [2024-06-27 23:44:42,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:44:42,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:44:42,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-27 23:44:42,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46904761904761905 [2024-06-27 23:44:42,215 INFO L175 Difference]: Start difference. First operand has 321 places, 643 transitions, 9575 flow. Second operand 10 states and 197 transitions. [2024-06-27 23:44:42,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 696 transitions, 11446 flow [2024-06-27 23:44:44,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 696 transitions, 11328 flow, removed 50 selfloop flow, removed 1 redundant places. [2024-06-27 23:44:44,066 INFO L231 Difference]: Finished difference. Result has 330 places, 644 transitions, 10095 flow [2024-06-27 23:44:44,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9457, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=643, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=281, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10095, PETRI_PLACES=330, PETRI_TRANSITIONS=644} [2024-06-27 23:44:44,067 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 287 predicate places. [2024-06-27 23:44:44,067 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 644 transitions, 10095 flow [2024-06-27 23:44:44,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:44,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:44,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:44,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 23:44:44,068 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:44:44,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:44,068 INFO L85 PathProgramCache]: Analyzing trace with hash -350066397, now seen corresponding path program 4 times [2024-06-27 23:44:44,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:44,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944079966] [2024-06-27 23:44:44,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:44,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:48,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:48,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:48,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944079966] [2024-06-27 23:44:48,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944079966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:48,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:48,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:44:48,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140041962] [2024-06-27 23:44:48,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:48,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:44:48,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:48,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:44:48,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:44:48,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-27 23:44:48,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 644 transitions, 10095 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:48,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:48,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-27 23:44:48,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:50,650 INFO L124 PetriNetUnfolderBase]: 4763/7388 cut-off events. [2024-06-27 23:44:50,650 INFO L125 PetriNetUnfolderBase]: For 943571/943576 co-relation queries the response was YES. [2024-06-27 23:44:50,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70416 conditions, 7388 events. 4763/7388 cut-off events. For 943571/943576 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 43337 event pairs, 1319 based on Foata normal form. 16/7403 useless extension candidates. Maximal degree in co-relation 70255. Up to 6240 conditions per place. [2024-06-27 23:44:50,754 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 404 selfloop transitions, 276 changer transitions 0/694 dead transitions. [2024-06-27 23:44:50,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 694 transitions, 11912 flow [2024-06-27 23:44:50,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:44:50,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:44:50,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-06-27 23:44:50,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4738095238095238 [2024-06-27 23:44:50,756 INFO L175 Difference]: Start difference. First operand has 330 places, 644 transitions, 10095 flow. Second operand 10 states and 199 transitions. [2024-06-27 23:44:50,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 694 transitions, 11912 flow [2024-06-27 23:44:53,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 694 transitions, 11294 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-27 23:44:53,308 INFO L231 Difference]: Finished difference. Result has 332 places, 645 transitions, 10105 flow [2024-06-27 23:44:53,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9477, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=644, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=275, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10105, PETRI_PLACES=332, PETRI_TRANSITIONS=645} [2024-06-27 23:44:53,308 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 289 predicate places. [2024-06-27 23:44:53,308 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 645 transitions, 10105 flow [2024-06-27 23:44:53,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:53,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:53,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:53,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 23:44:53,309 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:44:53,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:53,309 INFO L85 PathProgramCache]: Analyzing trace with hash -177345867, now seen corresponding path program 5 times [2024-06-27 23:44:53,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:53,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623648315] [2024-06-27 23:44:53,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:53,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:53,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:57,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:57,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:57,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623648315] [2024-06-27 23:44:57,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623648315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:57,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:57,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:44:57,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273641256] [2024-06-27 23:44:57,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:57,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:44:57,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:57,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:44:57,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:44:57,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-27 23:44:57,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 645 transitions, 10105 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:57,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:57,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-27 23:44:57,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:00,016 INFO L124 PetriNetUnfolderBase]: 4804/7452 cut-off events. [2024-06-27 23:45:00,016 INFO L125 PetriNetUnfolderBase]: For 966451/966456 co-relation queries the response was YES. [2024-06-27 23:45:00,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70977 conditions, 7452 events. 4804/7452 cut-off events. For 966451/966456 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 43870 event pairs, 1232 based on Foata normal form. 16/7467 useless extension candidates. Maximal degree in co-relation 70815. Up to 6028 conditions per place. [2024-06-27 23:45:00,119 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 372 selfloop transitions, 309 changer transitions 0/695 dead transitions. [2024-06-27 23:45:00,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 695 transitions, 11919 flow [2024-06-27 23:45:00,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:45:00,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:45:00,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-27 23:45:00,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-27 23:45:00,121 INFO L175 Difference]: Start difference. First operand has 332 places, 645 transitions, 10105 flow. Second operand 10 states and 196 transitions. [2024-06-27 23:45:00,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 695 transitions, 11919 flow [2024-06-27 23:45:02,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 695 transitions, 11311 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-27 23:45:02,425 INFO L231 Difference]: Finished difference. Result has 334 places, 646 transitions, 10193 flow [2024-06-27 23:45:02,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9497, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=308, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10193, PETRI_PLACES=334, PETRI_TRANSITIONS=646} [2024-06-27 23:45:02,426 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 291 predicate places. [2024-06-27 23:45:02,426 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 646 transitions, 10193 flow [2024-06-27 23:45:02,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:02,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:02,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:02,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 23:45:02,426 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:45:02,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:02,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1808209989, now seen corresponding path program 2 times [2024-06-27 23:45:02,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:02,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768432944] [2024-06-27 23:45:02,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:02,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:02,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:04,663 INFO 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 23:45:04,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:04,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768432944] [2024-06-27 23:45:04,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768432944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:04,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:04,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:45:04,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313968534] [2024-06-27 23:45:04,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:04,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:45:04,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:04,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:45:04,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:45:04,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:45:04,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 646 transitions, 10193 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:04,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:04,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:45:04,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:06,745 INFO L124 PetriNetUnfolderBase]: 4801/7442 cut-off events. [2024-06-27 23:45:06,745 INFO L125 PetriNetUnfolderBase]: For 954181/954188 co-relation queries the response was YES. [2024-06-27 23:45:06,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71029 conditions, 7442 events. 4801/7442 cut-off events. For 954181/954188 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 43729 event pairs, 1478 based on Foata normal form. 7/7448 useless extension candidates. Maximal degree in co-relation 70866. Up to 7075 conditions per place. [2024-06-27 23:45:06,850 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 588 selfloop transitions, 64 changer transitions 0/666 dead transitions. [2024-06-27 23:45:06,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 666 transitions, 11897 flow [2024-06-27 23:45:06,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:45:06,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:45:06,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-27 23:45:06,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46258503401360546 [2024-06-27 23:45:06,851 INFO L175 Difference]: Start difference. First operand has 334 places, 646 transitions, 10193 flow. Second operand 7 states and 136 transitions. [2024-06-27 23:45:06,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 666 transitions, 11897 flow [2024-06-27 23:45:09,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 666 transitions, 11203 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-27 23:45:09,111 INFO L231 Difference]: Finished difference. Result has 333 places, 646 transitions, 9634 flow [2024-06-27 23:45:09,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9499, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=646, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=582, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9634, PETRI_PLACES=333, PETRI_TRANSITIONS=646} [2024-06-27 23:45:09,112 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 290 predicate places. [2024-06-27 23:45:09,112 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 646 transitions, 9634 flow [2024-06-27 23:45:09,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:09,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:09,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:09,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 23:45:09,113 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:45:09,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:09,115 INFO L85 PathProgramCache]: Analyzing trace with hash 2043463259, now seen corresponding path program 3 times [2024-06-27 23:45:09,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:09,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64497644] [2024-06-27 23:45:09,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:09,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:11,920 INFO 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 23:45:11,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:11,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64497644] [2024-06-27 23:45:11,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64497644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:11,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:11,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:45:11,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785435368] [2024-06-27 23:45:11,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:11,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:45:11,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:11,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:45:11,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:45:12,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-27 23:45:12,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 646 transitions, 9634 flow. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:12,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:12,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-27 23:45:12,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:13,958 INFO L124 PetriNetUnfolderBase]: 4806/7446 cut-off events. [2024-06-27 23:45:13,958 INFO L125 PetriNetUnfolderBase]: For 961644/961649 co-relation queries the response was YES. [2024-06-27 23:45:14,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70027 conditions, 7446 events. 4806/7446 cut-off events. For 961644/961649 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 43652 event pairs, 1384 based on Foata normal form. 5/7450 useless extension candidates. Maximal degree in co-relation 69864. Up to 7103 conditions per place. [2024-06-27 23:45:14,063 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 585 selfloop transitions, 66 changer transitions 0/665 dead transitions. [2024-06-27 23:45:14,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 665 transitions, 11055 flow [2024-06-27 23:45:14,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:45:14,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:45:14,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-27 23:45:14,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45918367346938777 [2024-06-27 23:45:14,064 INFO L175 Difference]: Start difference. First operand has 333 places, 646 transitions, 9634 flow. Second operand 7 states and 135 transitions. [2024-06-27 23:45:14,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 665 transitions, 11055 flow [2024-06-27 23:45:16,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 665 transitions, 10929 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 23:45:16,341 INFO L231 Difference]: Finished difference. Result has 336 places, 650 transitions, 9739 flow [2024-06-27 23:45:16,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9510, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=646, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=580, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9739, PETRI_PLACES=336, PETRI_TRANSITIONS=650} [2024-06-27 23:45:16,342 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 293 predicate places. [2024-06-27 23:45:16,342 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 650 transitions, 9739 flow [2024-06-27 23:45:16,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:16,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:16,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:16,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 23:45:16,343 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:45:16,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:16,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1808202053, now seen corresponding path program 1 times [2024-06-27 23:45:16,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:16,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133831067] [2024-06-27 23:45:16,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:16,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:16,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:18,697 INFO 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 23:45:18,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:18,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133831067] [2024-06-27 23:45:18,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133831067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:18,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:18,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:45:18,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064330975] [2024-06-27 23:45:18,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:18,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:45:18,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:18,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:45:18,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:45:18,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:45:18,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 650 transitions, 9739 flow. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:18,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:18,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:45:18,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:21,034 INFO L124 PetriNetUnfolderBase]: 4679/7276 cut-off events. [2024-06-27 23:45:21,034 INFO L125 PetriNetUnfolderBase]: For 989180/989203 co-relation queries the response was YES. [2024-06-27 23:45:21,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69474 conditions, 7276 events. 4679/7276 cut-off events. For 989180/989203 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 42849 event pairs, 1186 based on Foata normal form. 19/7234 useless extension candidates. Maximal degree in co-relation 69310. Up to 6732 conditions per place. [2024-06-27 23:45:21,134 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 533 selfloop transitions, 94 changer transitions 0/678 dead transitions. [2024-06-27 23:45:21,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 678 transitions, 11443 flow [2024-06-27 23:45:21,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:45:21,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:45:21,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-27 23:45:21,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45535714285714285 [2024-06-27 23:45:21,135 INFO L175 Difference]: Start difference. First operand has 336 places, 650 transitions, 9739 flow. Second operand 8 states and 153 transitions. [2024-06-27 23:45:21,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 678 transitions, 11443 flow [2024-06-27 23:45:23,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 678 transitions, 11326 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-27 23:45:23,452 INFO L231 Difference]: Finished difference. Result has 341 places, 657 transitions, 9968 flow [2024-06-27 23:45:23,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9622, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=650, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=559, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9968, PETRI_PLACES=341, PETRI_TRANSITIONS=657} [2024-06-27 23:45:23,453 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 298 predicate places. [2024-06-27 23:45:23,453 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 657 transitions, 9968 flow [2024-06-27 23:45:23,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:23,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:23,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:23,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 23:45:23,454 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:45:23,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:23,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1570053191, now seen corresponding path program 3 times [2024-06-27 23:45:23,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:23,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461826897] [2024-06-27 23:45:23,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:23,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:23,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:25,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:45:25,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:25,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461826897] [2024-06-27 23:45:25,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461826897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:25,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:25,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:45:25,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30137156] [2024-06-27 23:45:25,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:25,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:45:25,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:25,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:45:25,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:45:25,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:45:25,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 657 transitions, 9968 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:25,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:25,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:45:25,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:27,121 INFO L124 PetriNetUnfolderBase]: 4841/7511 cut-off events. [2024-06-27 23:45:27,121 INFO L125 PetriNetUnfolderBase]: For 1019370/1019374 co-relation queries the response was YES. [2024-06-27 23:45:27,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71681 conditions, 7511 events. 4841/7511 cut-off events. For 1019370/1019374 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 44286 event pairs, 1858 based on Foata normal form. 6/7516 useless extension candidates. Maximal degree in co-relation 71516. Up to 7158 conditions per place. [2024-06-27 23:45:27,234 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 608 selfloop transitions, 68 changer transitions 0/690 dead transitions. [2024-06-27 23:45:27,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 690 transitions, 11894 flow [2024-06-27 23:45:27,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:45:27,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:45:27,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-27 23:45:27,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4387755102040816 [2024-06-27 23:45:27,235 INFO L175 Difference]: Start difference. First operand has 341 places, 657 transitions, 9968 flow. Second operand 7 states and 129 transitions. [2024-06-27 23:45:27,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 690 transitions, 11894 flow [2024-06-27 23:45:29,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 690 transitions, 11718 flow, removed 48 selfloop flow, removed 4 redundant places. [2024-06-27 23:45:29,854 INFO L231 Difference]: Finished difference. Result has 346 places, 673 transitions, 10170 flow [2024-06-27 23:45:29,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9792, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=657, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=598, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10170, PETRI_PLACES=346, PETRI_TRANSITIONS=673} [2024-06-27 23:45:29,855 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 303 predicate places. [2024-06-27 23:45:29,855 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 673 transitions, 10170 flow [2024-06-27 23:45:29,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:29,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:29,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:29,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 23:45:29,855 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:45:29,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:29,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1797364155, now seen corresponding path program 4 times [2024-06-27 23:45:29,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:29,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477456884] [2024-06-27 23:45:29,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:29,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:29,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:31,599 INFO 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 23:45:31,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:31,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477456884] [2024-06-27 23:45:31,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477456884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:31,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:31,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:45:31,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554720467] [2024-06-27 23:45:31,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:31,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:45:31,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:31,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:45:31,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:45:31,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:45:31,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 673 transitions, 10170 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:31,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:31,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:45:31,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:33,687 INFO L124 PetriNetUnfolderBase]: 4856/7531 cut-off events. [2024-06-27 23:45:33,687 INFO L125 PetriNetUnfolderBase]: For 1039216/1039220 co-relation queries the response was YES. [2024-06-27 23:45:33,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72344 conditions, 7531 events. 4856/7531 cut-off events. For 1039216/1039220 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 44395 event pairs, 1858 based on Foata normal form. 5/7535 useless extension candidates. Maximal degree in co-relation 72174. Up to 7173 conditions per place. [2024-06-27 23:45:33,783 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 603 selfloop transitions, 76 changer transitions 0/693 dead transitions. [2024-06-27 23:45:33,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 693 transitions, 12016 flow [2024-06-27 23:45:33,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:45:33,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:45:33,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-27 23:45:33,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-27 23:45:33,784 INFO L175 Difference]: Start difference. First operand has 346 places, 673 transitions, 10170 flow. Second operand 7 states and 126 transitions. [2024-06-27 23:45:33,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 693 transitions, 12016 flow [2024-06-27 23:45:36,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 693 transitions, 11874 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-27 23:45:36,273 INFO L231 Difference]: Finished difference. Result has 349 places, 679 transitions, 10290 flow [2024-06-27 23:45:36,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10038, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=673, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=603, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10290, PETRI_PLACES=349, PETRI_TRANSITIONS=679} [2024-06-27 23:45:36,274 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 306 predicate places. [2024-06-27 23:45:36,274 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 679 transitions, 10290 flow [2024-06-27 23:45:36,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:36,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:36,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:36,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 23:45:36,274 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:45:36,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:36,275 INFO L85 PathProgramCache]: Analyzing trace with hash -975327269, now seen corresponding path program 2 times [2024-06-27 23:45:36,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:36,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911765877] [2024-06-27 23:45:36,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:36,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:36,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:38,047 INFO 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 23:45:38,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:38,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911765877] [2024-06-27 23:45:38,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911765877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:38,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:38,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:45:38,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373797830] [2024-06-27 23:45:38,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:38,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:45:38,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:38,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:45:38,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:45:38,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-27 23:45:38,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 679 transitions, 10290 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:38,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:38,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-27 23:45:38,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:40,122 INFO L124 PetriNetUnfolderBase]: 4980/7657 cut-off events. [2024-06-27 23:45:40,122 INFO L125 PetriNetUnfolderBase]: For 1064476/1064476 co-relation queries the response was YES. [2024-06-27 23:45:40,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73713 conditions, 7657 events. 4980/7657 cut-off events. For 1064476/1064476 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 44593 event pairs, 1955 based on Foata normal form. 1/7657 useless extension candidates. Maximal degree in co-relation 73542. Up to 7481 conditions per place. [2024-06-27 23:45:40,238 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 665 selfloop transitions, 42 changer transitions 0/710 dead transitions. [2024-06-27 23:45:40,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 710 transitions, 12121 flow [2024-06-27 23:45:40,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:45:40,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:45:40,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-27 23:45:40,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-27 23:45:40,239 INFO L175 Difference]: Start difference. First operand has 349 places, 679 transitions, 10290 flow. Second operand 8 states and 132 transitions. [2024-06-27 23:45:40,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 710 transitions, 12121 flow [2024-06-27 23:45:42,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 710 transitions, 11983 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-27 23:45:42,959 INFO L231 Difference]: Finished difference. Result has 355 places, 694 transitions, 10474 flow [2024-06-27 23:45:42,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10152, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=679, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=641, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10474, PETRI_PLACES=355, PETRI_TRANSITIONS=694} [2024-06-27 23:45:42,960 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 312 predicate places. [2024-06-27 23:45:42,960 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 694 transitions, 10474 flow [2024-06-27 23:45:42,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:42,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:42,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:42,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 23:45:42,961 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:45:42,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:42,961 INFO L85 PathProgramCache]: Analyzing trace with hash 184271499, now seen corresponding path program 5 times [2024-06-27 23:45:42,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:42,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025067024] [2024-06-27 23:45:42,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:42,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:42,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:44,457 INFO 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 23:45:44,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:44,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025067024] [2024-06-27 23:45:44,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025067024] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:44,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:44,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:45:44,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830280262] [2024-06-27 23:45:44,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:44,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:45:44,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:44,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:45:44,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:45:44,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:45:44,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 694 transitions, 10474 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:44,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:44,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:45:44,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:46,625 INFO L124 PetriNetUnfolderBase]: 4862/7537 cut-off events. [2024-06-27 23:45:46,625 INFO L125 PetriNetUnfolderBase]: For 1078623/1078623 co-relation queries the response was YES. [2024-06-27 23:45:46,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72815 conditions, 7537 events. 4862/7537 cut-off events. For 1078623/1078623 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 44429 event pairs, 1891 based on Foata normal form. 2/7538 useless extension candidates. Maximal degree in co-relation 72642. Up to 7239 conditions per place. [2024-06-27 23:45:46,725 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 654 selfloop transitions, 39 changer transitions 0/709 dead transitions. [2024-06-27 23:45:46,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 709 transitions, 12103 flow [2024-06-27 23:45:46,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:45:46,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:45:46,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-27 23:45:46,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42517006802721086 [2024-06-27 23:45:46,726 INFO L175 Difference]: Start difference. First operand has 355 places, 694 transitions, 10474 flow. Second operand 7 states and 125 transitions. [2024-06-27 23:45:46,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 709 transitions, 12103 flow [2024-06-27 23:45:49,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 709 transitions, 11994 flow, removed 47 selfloop flow, removed 2 redundant places. [2024-06-27 23:45:49,302 INFO L231 Difference]: Finished difference. Result has 360 places, 694 transitions, 10454 flow [2024-06-27 23:45:49,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10365, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=694, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=655, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10454, PETRI_PLACES=360, PETRI_TRANSITIONS=694} [2024-06-27 23:45:49,303 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 317 predicate places. [2024-06-27 23:45:49,303 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 694 transitions, 10454 flow [2024-06-27 23:45:49,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:49,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:49,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:49,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 23:45:49,304 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:45:49,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:49,304 INFO L85 PathProgramCache]: Analyzing trace with hash 226488539, now seen corresponding path program 6 times [2024-06-27 23:45:49,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:49,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556730329] [2024-06-27 23:45:49,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:49,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:49,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:50,809 INFO 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 23:45:50,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:50,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556730329] [2024-06-27 23:45:50,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556730329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:50,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:50,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:45:50,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215208366] [2024-06-27 23:45:50,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:50,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:45:50,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:50,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:45:50,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:45:50,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:45:50,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 694 transitions, 10454 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:50,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:50,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:45:50,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:52,860 INFO L124 PetriNetUnfolderBase]: 4867/7543 cut-off events. [2024-06-27 23:45:52,860 INFO L125 PetriNetUnfolderBase]: For 1096313/1096313 co-relation queries the response was YES. [2024-06-27 23:45:52,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73110 conditions, 7543 events. 4867/7543 cut-off events. For 1096313/1096313 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 44430 event pairs, 1895 based on Foata normal form. 1/7543 useless extension candidates. Maximal degree in co-relation 72935. Up to 7273 conditions per place. [2024-06-27 23:45:52,973 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 665 selfloop transitions, 27 changer transitions 0/708 dead transitions. [2024-06-27 23:45:52,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 708 transitions, 11934 flow [2024-06-27 23:45:52,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:45:52,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:45:52,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-27 23:45:52,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40816326530612246 [2024-06-27 23:45:52,974 INFO L175 Difference]: Start difference. First operand has 360 places, 694 transitions, 10454 flow. Second operand 7 states and 120 transitions. [2024-06-27 23:45:52,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 708 transitions, 11934 flow [2024-06-27 23:45:55,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 708 transitions, 11811 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 23:45:55,573 INFO L231 Difference]: Finished difference. Result has 361 places, 697 transitions, 10454 flow [2024-06-27 23:45:55,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10338, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=694, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=667, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10454, PETRI_PLACES=361, PETRI_TRANSITIONS=697} [2024-06-27 23:45:55,573 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 318 predicate places. [2024-06-27 23:45:55,573 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 697 transitions, 10454 flow [2024-06-27 23:45:55,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:55,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:55,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:55,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 23:45:55,574 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:45:55,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:55,574 INFO L85 PathProgramCache]: Analyzing trace with hash -362113155, now seen corresponding path program 7 times [2024-06-27 23:45:55,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:55,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514478338] [2024-06-27 23:45:55,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:55,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:55,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:57,089 INFO 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 23:45:57,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:57,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514478338] [2024-06-27 23:45:57,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514478338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:57,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:57,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:45:57,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995908539] [2024-06-27 23:45:57,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:57,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:45:57,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:57,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:45:57,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:45:57,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:45:57,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 697 transitions, 10454 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:57,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:57,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:45:57,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:59,335 INFO L124 PetriNetUnfolderBase]: 4864/7539 cut-off events. [2024-06-27 23:45:59,335 INFO L125 PetriNetUnfolderBase]: For 1113812/1113816 co-relation queries the response was YES. [2024-06-27 23:45:59,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73141 conditions, 7539 events. 4864/7539 cut-off events. For 1113812/1113816 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 44439 event pairs, 1867 based on Foata normal form. 5/7543 useless extension candidates. Maximal degree in co-relation 72966. Up to 7259 conditions per place. [2024-06-27 23:45:59,430 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 656 selfloop transitions, 35 changer transitions 0/707 dead transitions. [2024-06-27 23:45:59,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 707 transitions, 12050 flow [2024-06-27 23:45:59,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:45:59,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:45:59,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-27 23:45:59,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-27 23:45:59,431 INFO L175 Difference]: Start difference. First operand has 361 places, 697 transitions, 10454 flow. Second operand 7 states and 119 transitions. [2024-06-27 23:45:59,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 707 transitions, 12050 flow [2024-06-27 23:46:01,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 707 transitions, 11961 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-27 23:46:02,007 INFO L231 Difference]: Finished difference. Result has 363 places, 697 transitions, 10441 flow [2024-06-27 23:46:02,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10365, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=662, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10441, PETRI_PLACES=363, PETRI_TRANSITIONS=697} [2024-06-27 23:46:02,007 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 320 predicate places. [2024-06-27 23:46:02,008 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 697 transitions, 10441 flow [2024-06-27 23:46:02,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:02,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:46:02,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:46:02,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 23:46:02,008 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:46:02,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:46:02,008 INFO L85 PathProgramCache]: Analyzing trace with hash -2072364357, now seen corresponding path program 8 times [2024-06-27 23:46:02,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:46:02,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691730357] [2024-06-27 23:46:02,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:46:02,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:46:02,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:46:03,470 INFO 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 23:46:03,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:46:03,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691730357] [2024-06-27 23:46:03,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691730357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:46:03,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:46:03,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:46:03,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617315485] [2024-06-27 23:46:03,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:46:03,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:46:03,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:46:03,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:46:03,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:46:03,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:46:03,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 697 transitions, 10441 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:03,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:46:03,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:46:03,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:46:05,544 INFO L124 PetriNetUnfolderBase]: 4858/7532 cut-off events. [2024-06-27 23:46:05,545 INFO L125 PetriNetUnfolderBase]: For 1131650/1131654 co-relation queries the response was YES. [2024-06-27 23:46:05,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73221 conditions, 7532 events. 4858/7532 cut-off events. For 1131650/1131654 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 44399 event pairs, 1867 based on Foata normal form. 5/7536 useless extension candidates. Maximal degree in co-relation 73045. Up to 7264 conditions per place. [2024-06-27 23:46:05,663 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 663 selfloop transitions, 27 changer transitions 0/706 dead transitions. [2024-06-27 23:46:05,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 706 transitions, 11855 flow [2024-06-27 23:46:05,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:46:05,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:46:05,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-06-27 23:46:05,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3979591836734694 [2024-06-27 23:46:05,664 INFO L175 Difference]: Start difference. First operand has 363 places, 697 transitions, 10441 flow. Second operand 7 states and 117 transitions. [2024-06-27 23:46:05,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 706 transitions, 11855 flow [2024-06-27 23:46:08,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 706 transitions, 11675 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 23:46:08,821 INFO L231 Difference]: Finished difference. Result has 363 places, 697 transitions, 10321 flow [2024-06-27 23:46:08,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10261, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=670, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10321, PETRI_PLACES=363, PETRI_TRANSITIONS=697} [2024-06-27 23:46:08,822 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 320 predicate places. [2024-06-27 23:46:08,822 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 697 transitions, 10321 flow [2024-06-27 23:46:08,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:08,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:46:08,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:46:08,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 23:46:08,822 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:46:08,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:46:08,823 INFO L85 PathProgramCache]: Analyzing trace with hash -362782121, now seen corresponding path program 6 times [2024-06-27 23:46:08,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:46:08,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128464807] [2024-06-27 23:46:08,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:46:08,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:46:08,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:46:11,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:46:11,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:46:11,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128464807] [2024-06-27 23:46:11,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128464807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:46:11,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:46:11,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:46:11,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309853251] [2024-06-27 23:46:11,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:46:11,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:46:11,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:46:11,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:46:11,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:46:11,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:46:11,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 697 transitions, 10321 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 23:46:11,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:46:11,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:46:11,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:46:13,867 INFO L124 PetriNetUnfolderBase]: 4899/7603 cut-off events. [2024-06-27 23:46:13,867 INFO L125 PetriNetUnfolderBase]: For 1190198/1190198 co-relation queries the response was YES. [2024-06-27 23:46:13,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74038 conditions, 7603 events. 4899/7603 cut-off events. For 1190198/1190198 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 44966 event pairs, 1866 based on Foata normal form. 12/7614 useless extension candidates. Maximal degree in co-relation 73861. Up to 6965 conditions per place. [2024-06-27 23:46:13,971 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 613 selfloop transitions, 111 changer transitions 0/740 dead transitions. [2024-06-27 23:46:13,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 740 transitions, 12133 flow [2024-06-27 23:46:13,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:46:13,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:46:13,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 23:46:13,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-27 23:46:13,973 INFO L175 Difference]: Start difference. First operand has 363 places, 697 transitions, 10321 flow. Second operand 10 states and 182 transitions. [2024-06-27 23:46:13,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 740 transitions, 12133 flow [2024-06-27 23:46:16,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 740 transitions, 12077 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 23:46:16,991 INFO L231 Difference]: Finished difference. Result has 368 places, 698 transitions, 10566 flow [2024-06-27 23:46:16,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10265, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=586, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10566, PETRI_PLACES=368, PETRI_TRANSITIONS=698} [2024-06-27 23:46:16,992 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 325 predicate places. [2024-06-27 23:46:16,992 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 698 transitions, 10566 flow [2024-06-27 23:46:16,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 23:46:16,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:46:16,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:46:16,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 23:46:16,992 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:46:16,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:46:16,992 INFO L85 PathProgramCache]: Analyzing trace with hash -2093273577, now seen corresponding path program 7 times [2024-06-27 23:46:16,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:46:16,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031460387] [2024-06-27 23:46:16,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:46:16,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:46:17,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:46:19,437 INFO 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 23:46:19,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:46:19,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031460387] [2024-06-27 23:46:19,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031460387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:46:19,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:46:19,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:46:19,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955700247] [2024-06-27 23:46:19,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:46:19,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:46:19,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:46:19,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:46:19,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:46:19,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:46:19,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 698 transitions, 10566 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 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 23:46:19,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:46:19,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:46:19,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:46:22,009 INFO L124 PetriNetUnfolderBase]: 4943/7675 cut-off events. [2024-06-27 23:46:22,009 INFO L125 PetriNetUnfolderBase]: For 1222982/1222982 co-relation queries the response was YES. [2024-06-27 23:46:22,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75317 conditions, 7675 events. 4943/7675 cut-off events. For 1222982/1222982 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 45514 event pairs, 1860 based on Foata normal form. 12/7686 useless extension candidates. Maximal degree in co-relation 75139. Up to 6962 conditions per place. [2024-06-27 23:46:22,114 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 613 selfloop transitions, 109 changer transitions 0/738 dead transitions. [2024-06-27 23:46:22,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 738 transitions, 12334 flow [2024-06-27 23:46:22,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:46:22,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:46:22,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-27 23:46:22,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41125541125541126 [2024-06-27 23:46:22,116 INFO L175 Difference]: Start difference. First operand has 368 places, 698 transitions, 10566 flow. Second operand 11 states and 190 transitions. [2024-06-27 23:46:22,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 738 transitions, 12334 flow [2024-06-27 23:46:24,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 738 transitions, 12091 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-27 23:46:24,788 INFO L231 Difference]: Finished difference. Result has 372 places, 699 transitions, 10622 flow [2024-06-27 23:46:24,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10323, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=698, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=589, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10622, PETRI_PLACES=372, PETRI_TRANSITIONS=699} [2024-06-27 23:46:24,788 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 329 predicate places. [2024-06-27 23:46:24,789 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 699 transitions, 10622 flow [2024-06-27 23:46:24,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 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 23:46:24,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:46:24,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:46:24,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 23:46:24,789 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:46:24,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:46:24,789 INFO L85 PathProgramCache]: Analyzing trace with hash -2130087273, now seen corresponding path program 8 times [2024-06-27 23:46:24,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:46:24,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304118921] [2024-06-27 23:46:24,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:46:24,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:46:24,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:46:27,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:46:27,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:46:27,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304118921] [2024-06-27 23:46:27,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304118921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:46:27,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:46:27,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:46:27,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623165044] [2024-06-27 23:46:27,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:46:27,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:46:27,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:46:27,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:46:27,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:46:27,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:46:27,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 699 transitions, 10622 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 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 23:46:27,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:46:27,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:46:27,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:46:29,970 INFO L124 PetriNetUnfolderBase]: 5011/7793 cut-off events. [2024-06-27 23:46:29,970 INFO L125 PetriNetUnfolderBase]: For 1249486/1249486 co-relation queries the response was YES. [2024-06-27 23:46:30,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76127 conditions, 7793 events. 5011/7793 cut-off events. For 1249486/1249486 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 46539 event pairs, 1900 based on Foata normal form. 12/7804 useless extension candidates. Maximal degree in co-relation 75948. Up to 7204 conditions per place. [2024-06-27 23:46:30,070 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 645 selfloop transitions, 77 changer transitions 0/738 dead transitions. [2024-06-27 23:46:30,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 738 transitions, 12371 flow [2024-06-27 23:46:30,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:46:30,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:46:30,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-27 23:46:30,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-27 23:46:30,072 INFO L175 Difference]: Start difference. First operand has 372 places, 699 transitions, 10622 flow. Second operand 11 states and 189 transitions. [2024-06-27 23:46:30,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 738 transitions, 12371 flow [2024-06-27 23:46:32,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 738 transitions, 12086 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-27 23:46:32,484 INFO L231 Difference]: Finished difference. Result has 374 places, 701 transitions, 10591 flow [2024-06-27 23:46:32,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10341, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=699, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=622, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10591, PETRI_PLACES=374, PETRI_TRANSITIONS=701} [2024-06-27 23:46:32,485 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 331 predicate places. [2024-06-27 23:46:32,485 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 701 transitions, 10591 flow [2024-06-27 23:46:32,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 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 23:46:32,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:46:32,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:46:32,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 23:46:32,485 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:46:32,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:46:32,486 INFO L85 PathProgramCache]: Analyzing trace with hash -2123600523, now seen corresponding path program 9 times [2024-06-27 23:46:32,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:46:32,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542383101] [2024-06-27 23:46:32,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:46:32,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:46:32,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:46:35,017 INFO 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 23:46:35,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:46:35,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542383101] [2024-06-27 23:46:35,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542383101] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:46:35,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:46:35,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:46:35,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849659601] [2024-06-27 23:46:35,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:46:35,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:46:35,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:46:35,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:46:35,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:46:35,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:46:35,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 701 transitions, 10591 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 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 23:46:35,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:46:35,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:46:35,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:46:37,515 INFO L124 PetriNetUnfolderBase]: 5079/7909 cut-off events. [2024-06-27 23:46:37,516 INFO L125 PetriNetUnfolderBase]: For 1275495/1275495 co-relation queries the response was YES. [2024-06-27 23:46:37,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76810 conditions, 7909 events. 5079/7909 cut-off events. For 1275495/1275495 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 47468 event pairs, 1907 based on Foata normal form. 12/7920 useless extension candidates. Maximal degree in co-relation 76630. Up to 7215 conditions per place. [2024-06-27 23:46:37,638 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 645 selfloop transitions, 80 changer transitions 0/741 dead transitions. [2024-06-27 23:46:37,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 741 transitions, 12346 flow [2024-06-27 23:46:37,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:46:37,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:46:37,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-27 23:46:37,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-27 23:46:37,639 INFO L175 Difference]: Start difference. First operand has 374 places, 701 transitions, 10591 flow. Second operand 11 states and 189 transitions. [2024-06-27 23:46:37,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 741 transitions, 12346 flow [2024-06-27 23:46:40,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 741 transitions, 12132 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-27 23:46:40,896 INFO L231 Difference]: Finished difference. Result has 376 places, 703 transitions, 10634 flow [2024-06-27 23:46:40,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10377, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=701, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=621, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10634, PETRI_PLACES=376, PETRI_TRANSITIONS=703} [2024-06-27 23:46:40,896 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 333 predicate places. [2024-06-27 23:46:40,896 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 703 transitions, 10634 flow [2024-06-27 23:46:40,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 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 23:46:40,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:46:40,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:46:40,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 23:46:40,897 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:46:40,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:46:40,898 INFO L85 PathProgramCache]: Analyzing trace with hash -207337203, now seen corresponding path program 10 times [2024-06-27 23:46:40,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:46:40,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957904979] [2024-06-27 23:46:40,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:46:40,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:46:40,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:46:43,114 INFO 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 23:46:43,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:46:43,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957904979] [2024-06-27 23:46:43,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957904979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:46:43,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:46:43,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:46:43,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035363996] [2024-06-27 23:46:43,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:46:43,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:46:43,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:46:43,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:46:43,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:46:43,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:46:43,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 703 transitions, 10634 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 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 23:46:43,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:46:43,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:46:43,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:46:45,543 INFO L124 PetriNetUnfolderBase]: 5120/7980 cut-off events. [2024-06-27 23:46:45,543 INFO L125 PetriNetUnfolderBase]: For 1301371/1301371 co-relation queries the response was YES. [2024-06-27 23:46:45,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77500 conditions, 7980 events. 5120/7980 cut-off events. For 1301371/1301371 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 48035 event pairs, 1967 based on Foata normal form. 12/7991 useless extension candidates. Maximal degree in co-relation 77319. Up to 7573 conditions per place. [2024-06-27 23:46:45,666 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 698 selfloop transitions, 25 changer transitions 0/739 dead transitions. [2024-06-27 23:46:45,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 739 transitions, 12328 flow [2024-06-27 23:46:45,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:46:45,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:46:45,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 23:46:45,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4004329004329004 [2024-06-27 23:46:45,668 INFO L175 Difference]: Start difference. First operand has 376 places, 703 transitions, 10634 flow. Second operand 11 states and 185 transitions. [2024-06-27 23:46:45,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 739 transitions, 12328 flow [2024-06-27 23:46:49,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 739 transitions, 12105 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-27 23:46:49,564 INFO L231 Difference]: Finished difference. Result has 378 places, 704 transitions, 10547 flow [2024-06-27 23:46:49,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10411, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=703, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=678, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10547, PETRI_PLACES=378, PETRI_TRANSITIONS=704} [2024-06-27 23:46:49,564 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 335 predicate places. [2024-06-27 23:46:49,564 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 704 transitions, 10547 flow [2024-06-27 23:46:49,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 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 23:46:49,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:46:49,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:46:49,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 23:46:49,565 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:46:49,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:46:49,565 INFO L85 PathProgramCache]: Analyzing trace with hash 2028973189, now seen corresponding path program 11 times [2024-06-27 23:46:49,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:46:49,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194932198] [2024-06-27 23:46:49,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:46:49,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:46:49,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:46:52,215 INFO 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 23:46:52,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:46:52,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194932198] [2024-06-27 23:46:52,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194932198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:46:52,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:46:52,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:46:52,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131890522] [2024-06-27 23:46:52,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:46:52,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:46:52,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:46:52,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:46:52,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:46:52,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:46:52,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 704 transitions, 10547 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 23:46:52,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:46:52,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:46:52,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:46:54,857 INFO L124 PetriNetUnfolderBase]: 5127/7993 cut-off events. [2024-06-27 23:46:54,857 INFO L125 PetriNetUnfolderBase]: For 1278012/1278012 co-relation queries the response was YES. [2024-06-27 23:46:54,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76089 conditions, 7993 events. 5127/7993 cut-off events. For 1278012/1278012 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 48139 event pairs, 1967 based on Foata normal form. 12/8004 useless extension candidates. Maximal degree in co-relation 75907. Up to 7322 conditions per place. [2024-06-27 23:46:54,977 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 609 selfloop transitions, 119 changer transitions 0/744 dead transitions. [2024-06-27 23:46:54,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 744 transitions, 12148 flow [2024-06-27 23:46:54,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:46:54,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:46:54,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-27 23:46:54,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-27 23:46:54,978 INFO L175 Difference]: Start difference. First operand has 378 places, 704 transitions, 10547 flow. Second operand 10 states and 180 transitions. [2024-06-27 23:46:54,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 744 transitions, 12148 flow [2024-06-27 23:46:58,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 744 transitions, 12028 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-27 23:46:58,553 INFO L231 Difference]: Finished difference. Result has 378 places, 704 transitions, 10553 flow [2024-06-27 23:46:58,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10297, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=703, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=584, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10553, PETRI_PLACES=378, PETRI_TRANSITIONS=704} [2024-06-27 23:46:58,554 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 335 predicate places. [2024-06-27 23:46:58,554 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 704 transitions, 10553 flow [2024-06-27 23:46:58,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 23:46:58,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:46:58,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:46:58,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 23:46:58,555 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:46:58,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:46:58,555 INFO L85 PathProgramCache]: Analyzing trace with hash -2064737861, now seen corresponding path program 3 times [2024-06-27 23:46:58,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:46:58,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660067631] [2024-06-27 23:46:58,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:46:58,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:46:58,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:47:00,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:47:00,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:47:00,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660067631] [2024-06-27 23:47:00,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660067631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:47:00,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:47:00,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:47:00,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314782327] [2024-06-27 23:47:00,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:47:00,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:47:00,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:47:00,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:47:00,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:47:00,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-27 23:47:00,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 704 transitions, 10553 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:00,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:47:00,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-27 23:47:00,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:47:02,431 INFO L124 PetriNetUnfolderBase]: 5244/8110 cut-off events. [2024-06-27 23:47:02,431 INFO L125 PetriNetUnfolderBase]: For 1263321/1263321 co-relation queries the response was YES. [2024-06-27 23:47:02,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77326 conditions, 8110 events. 5244/8110 cut-off events. For 1263321/1263321 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 48310 event pairs, 2100 based on Foata normal form. 1/8110 useless extension candidates. Maximal degree in co-relation 77143. Up to 7982 conditions per place. [2024-06-27 23:47:02,540 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 695 selfloop transitions, 19 changer transitions 0/717 dead transitions. [2024-06-27 23:47:02,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 717 transitions, 12076 flow [2024-06-27 23:47:02,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:47:02,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:47:02,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 120 transitions. [2024-06-27 23:47:02,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-06-27 23:47:02,542 INFO L175 Difference]: Start difference. First operand has 378 places, 704 transitions, 10553 flow. Second operand 8 states and 120 transitions. [2024-06-27 23:47:02,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 717 transitions, 12076 flow [2024-06-27 23:47:06,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 717 transitions, 11748 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-27 23:47:06,323 INFO L231 Difference]: Finished difference. Result has 379 places, 707 transitions, 10334 flow [2024-06-27 23:47:06,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10225, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=704, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=685, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10334, PETRI_PLACES=379, PETRI_TRANSITIONS=707} [2024-06-27 23:47:06,323 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 336 predicate places. [2024-06-27 23:47:06,324 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 707 transitions, 10334 flow [2024-06-27 23:47:06,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:06,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:47:06,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:47:06,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 23:47:06,324 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:47:06,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:47:06,325 INFO L85 PathProgramCache]: Analyzing trace with hash -2065183331, now seen corresponding path program 4 times [2024-06-27 23:47:06,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:47:06,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741840362] [2024-06-27 23:47:06,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:47:06,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:47:06,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:47:07,919 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 23:47:07,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:47:07,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741840362] [2024-06-27 23:47:07,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741840362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:47:07,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:47:07,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:47:07,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129819971] [2024-06-27 23:47:07,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:47:07,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:47:07,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:47:07,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:47:07,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:47:08,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:47:08,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 707 transitions, 10334 flow. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:08,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:47:08,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:47:08,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:47:10,398 INFO L124 PetriNetUnfolderBase]: 5013/7837 cut-off events. [2024-06-27 23:47:10,398 INFO L125 PetriNetUnfolderBase]: For 1287929/1287978 co-relation queries the response was YES. [2024-06-27 23:47:10,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74676 conditions, 7837 events. 5013/7837 cut-off events. For 1287929/1287978 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 47631 event pairs, 2020 based on Foata normal form. 20/7783 useless extension candidates. Maximal degree in co-relation 74493. Up to 7476 conditions per place. [2024-06-27 23:47:10,524 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 633 selfloop transitions, 29 changer transitions 0/726 dead transitions. [2024-06-27 23:47:10,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 726 transitions, 12136 flow [2024-06-27 23:47:10,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:47:10,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:47:10,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-27 23:47:10,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3869047619047619 [2024-06-27 23:47:10,526 INFO L175 Difference]: Start difference. First operand has 379 places, 707 transitions, 10334 flow. Second operand 8 states and 130 transitions. [2024-06-27 23:47:10,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 726 transitions, 12136 flow [2024-06-27 23:47:14,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 726 transitions, 12062 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-27 23:47:14,516 INFO L231 Difference]: Finished difference. Result has 381 places, 715 transitions, 10580 flow [2024-06-27 23:47:14,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10260, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=707, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=681, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10580, PETRI_PLACES=381, PETRI_TRANSITIONS=715} [2024-06-27 23:47:14,517 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 338 predicate places. [2024-06-27 23:47:14,517 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 715 transitions, 10580 flow [2024-06-27 23:47:14,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:14,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:47:14,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:47:14,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 23:47:14,517 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:47:14,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:47:14,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1416880475, now seen corresponding path program 4 times [2024-06-27 23:47:14,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:47:14,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981058808] [2024-06-27 23:47:14,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:47:14,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:47:14,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:47:16,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:47:16,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:47:16,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981058808] [2024-06-27 23:47:16,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981058808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:47:16,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:47:16,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:47:16,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144415934] [2024-06-27 23:47:16,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:47:16,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:47:16,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:47:16,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:47:16,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:47:16,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:47:16,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 715 transitions, 10580 flow. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:16,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:47:16,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:47:16,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:47:18,839 INFO L124 PetriNetUnfolderBase]: 5142/8013 cut-off events. [2024-06-27 23:47:18,839 INFO L125 PetriNetUnfolderBase]: For 1302987/1303001 co-relation queries the response was YES. [2024-06-27 23:47:18,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76015 conditions, 8013 events. 5142/8013 cut-off events. For 1302987/1303001 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 48303 event pairs, 2034 based on Foata normal form. 1/8013 useless extension candidates. Maximal degree in co-relation 75831. Up to 7760 conditions per place. [2024-06-27 23:47:18,965 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 690 selfloop transitions, 19 changer transitions 0/725 dead transitions. [2024-06-27 23:47:18,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 725 transitions, 12034 flow [2024-06-27 23:47:18,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:47:18,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:47:18,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-27 23:47:18,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37797619047619047 [2024-06-27 23:47:18,966 INFO L175 Difference]: Start difference. First operand has 381 places, 715 transitions, 10580 flow. Second operand 8 states and 127 transitions. [2024-06-27 23:47:18,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 725 transitions, 12034 flow [2024-06-27 23:47:23,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 725 transitions, 11871 flow, removed 72 selfloop flow, removed 4 redundant places. [2024-06-27 23:47:23,102 INFO L231 Difference]: Finished difference. Result has 385 places, 715 transitions, 10461 flow [2024-06-27 23:47:23,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10417, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=715, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=696, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10461, PETRI_PLACES=385, PETRI_TRANSITIONS=715} [2024-06-27 23:47:23,103 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 342 predicate places. [2024-06-27 23:47:23,103 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 715 transitions, 10461 flow [2024-06-27 23:47:23,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:23,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:47:23,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:47:23,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 23:47:23,103 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:47:23,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:47:23,104 INFO L85 PathProgramCache]: Analyzing trace with hash -2078070341, now seen corresponding path program 5 times [2024-06-27 23:47:23,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:47:23,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480403571] [2024-06-27 23:47:23,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:47:23,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:47:23,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:47:24,782 INFO 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 23:47:24,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:47:24,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480403571] [2024-06-27 23:47:24,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480403571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:47:24,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:47:24,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:47:24,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566729410] [2024-06-27 23:47:24,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:47:24,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:47:24,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:47:24,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:47:24,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:47:24,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-27 23:47:24,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 715 transitions, 10461 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:24,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:47:24,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-27 23:47:24,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:47:27,088 INFO L124 PetriNetUnfolderBase]: 5256/8128 cut-off events. [2024-06-27 23:47:27,088 INFO L125 PetriNetUnfolderBase]: For 1323188/1323188 co-relation queries the response was YES. [2024-06-27 23:47:27,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77095 conditions, 8128 events. 5256/8128 cut-off events. For 1323188/1323188 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 48419 event pairs, 2098 based on Foata normal form. 1/8128 useless extension candidates. Maximal degree in co-relation 76909. Up to 7984 conditions per place. [2024-06-27 23:47:27,207 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 696 selfloop transitions, 30 changer transitions 0/729 dead transitions. [2024-06-27 23:47:27,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 729 transitions, 12016 flow [2024-06-27 23:47:27,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:47:27,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:47:27,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 124 transitions. [2024-06-27 23:47:27,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36904761904761907 [2024-06-27 23:47:27,208 INFO L175 Difference]: Start difference. First operand has 385 places, 715 transitions, 10461 flow. Second operand 8 states and 124 transitions. [2024-06-27 23:47:27,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 729 transitions, 12016 flow [2024-06-27 23:47:30,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 729 transitions, 11827 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-06-27 23:47:30,665 INFO L231 Difference]: Finished difference. Result has 386 places, 718 transitions, 10401 flow [2024-06-27 23:47:30,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10300, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=715, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=687, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10401, PETRI_PLACES=386, PETRI_TRANSITIONS=718} [2024-06-27 23:47:30,666 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 343 predicate places. [2024-06-27 23:47:30,666 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 718 transitions, 10401 flow [2024-06-27 23:47:30,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:30,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:47:30,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:47:30,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 23:47:30,666 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:47:30,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:47:30,666 INFO L85 PathProgramCache]: Analyzing trace with hash 222777560, now seen corresponding path program 1 times [2024-06-27 23:47:30,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:47:30,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984884662] [2024-06-27 23:47:30,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:47:30,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:47:30,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:47:33,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:47:33,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:47:33,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984884662] [2024-06-27 23:47:33,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984884662] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:47:33,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:47:33,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:47:33,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221442962] [2024-06-27 23:47:33,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:47:33,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:47:33,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:47:33,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:47:33,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:47:33,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-27 23:47:33,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 718 transitions, 10401 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:33,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:47:33,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-27 23:47:33,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:47:35,561 INFO L124 PetriNetUnfolderBase]: 5271/8150 cut-off events. [2024-06-27 23:47:35,561 INFO L125 PetriNetUnfolderBase]: For 1351077/1351077 co-relation queries the response was YES. [2024-06-27 23:47:35,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77363 conditions, 8150 events. 5271/8150 cut-off events. For 1351077/1351077 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 48607 event pairs, 2098 based on Foata normal form. 2/8151 useless extension candidates. Maximal degree in co-relation 77175. Up to 7978 conditions per place. [2024-06-27 23:47:35,692 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 708 selfloop transitions, 30 changer transitions 0/741 dead transitions. [2024-06-27 23:47:35,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 741 transitions, 12062 flow [2024-06-27 23:47:35,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:47:35,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:47:35,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-27 23:47:35,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37037037037037035 [2024-06-27 23:47:35,693 INFO L175 Difference]: Start difference. First operand has 386 places, 718 transitions, 10401 flow. Second operand 9 states and 140 transitions. [2024-06-27 23:47:35,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 741 transitions, 12062 flow [2024-06-27 23:47:39,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 741 transitions, 11967 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 23:47:39,636 INFO L231 Difference]: Finished difference. Result has 389 places, 724 transitions, 10463 flow [2024-06-27 23:47:39,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10306, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=718, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=688, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10463, PETRI_PLACES=389, PETRI_TRANSITIONS=724} [2024-06-27 23:47:39,636 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 346 predicate places. [2024-06-27 23:47:39,637 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 724 transitions, 10463 flow [2024-06-27 23:47:39,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:39,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:47:39,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:47:39,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 23:47:39,637 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:47:39,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:47:39,638 INFO L85 PathProgramCache]: Analyzing trace with hash 226496630, now seen corresponding path program 2 times [2024-06-27 23:47:39,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:47:39,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889045144] [2024-06-27 23:47:39,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:47:39,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:47:39,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:47:42,022 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 23:47:42,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:47:42,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889045144] [2024-06-27 23:47:42,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889045144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:47:42,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:47:42,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:47:42,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24982282] [2024-06-27 23:47:42,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:47:42,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:47:42,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:47:42,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:47:42,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:47:42,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-27 23:47:42,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 724 transitions, 10463 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:42,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:47:42,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-27 23:47:42,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:47:44,787 INFO L124 PetriNetUnfolderBase]: 5297/8186 cut-off events. [2024-06-27 23:47:44,787 INFO L125 PetriNetUnfolderBase]: For 1383926/1383926 co-relation queries the response was YES. [2024-06-27 23:47:44,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78537 conditions, 8186 events. 5297/8186 cut-off events. For 1383926/1383926 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 48761 event pairs, 2086 based on Foata normal form. 2/8187 useless extension candidates. Maximal degree in co-relation 78348. Up to 7945 conditions per place. [2024-06-27 23:47:44,902 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 695 selfloop transitions, 54 changer transitions 0/752 dead transitions. [2024-06-27 23:47:44,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 752 transitions, 12687 flow [2024-06-27 23:47:44,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:47:44,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:47:44,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-27 23:47:44,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40773809523809523 [2024-06-27 23:47:44,903 INFO L175 Difference]: Start difference. First operand has 389 places, 724 transitions, 10463 flow. Second operand 8 states and 137 transitions. [2024-06-27 23:47:44,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 752 transitions, 12687 flow [2024-06-27 23:47:49,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 752 transitions, 12593 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-27 23:47:49,145 INFO L231 Difference]: Finished difference. Result has 390 places, 733 transitions, 10653 flow [2024-06-27 23:47:49,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10369, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=724, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=676, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10653, PETRI_PLACES=390, PETRI_TRANSITIONS=733} [2024-06-27 23:47:49,146 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 347 predicate places. [2024-06-27 23:47:49,146 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 733 transitions, 10653 flow [2024-06-27 23:47:49,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:49,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:47:49,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:47:49,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 23:47:49,146 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:47:49,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:47:49,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1067684354, now seen corresponding path program 3 times [2024-06-27 23:47:49,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:47:49,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23162722] [2024-06-27 23:47:49,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:47:49,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:47:49,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:47:51,539 INFO 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 23:47:51,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:47:51,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23162722] [2024-06-27 23:47:51,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23162722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:47:51,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:47:51,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:47:51,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632580176] [2024-06-27 23:47:51,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:47:51,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:47:51,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:47:51,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:47:51,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:47:51,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-27 23:47:51,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 733 transitions, 10653 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:51,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:47:51,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-27 23:47:51,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:47:54,154 INFO L124 PetriNetUnfolderBase]: 5291/8178 cut-off events. [2024-06-27 23:47:54,154 INFO L125 PetriNetUnfolderBase]: For 1401206/1401206 co-relation queries the response was YES. [2024-06-27 23:47:54,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78902 conditions, 8178 events. 5291/8178 cut-off events. For 1401206/1401206 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 48758 event pairs, 2085 based on Foata normal form. 2/8179 useless extension candidates. Maximal degree in co-relation 78711. Up to 7940 conditions per place. [2024-06-27 23:47:54,282 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 693 selfloop transitions, 55 changer transitions 0/751 dead transitions. [2024-06-27 23:47:54,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 751 transitions, 12509 flow [2024-06-27 23:47:54,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:47:54,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:47:54,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-27 23:47:54,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017857142857143 [2024-06-27 23:47:54,283 INFO L175 Difference]: Start difference. First operand has 390 places, 733 transitions, 10653 flow. Second operand 8 states and 135 transitions. [2024-06-27 23:47:54,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 751 transitions, 12509 flow [2024-06-27 23:47:58,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 751 transitions, 12418 flow, removed 40 selfloop flow, removed 2 redundant places. [2024-06-27 23:47:58,156 INFO L231 Difference]: Finished difference. Result has 396 places, 733 transitions, 10681 flow [2024-06-27 23:47:58,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10562, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=733, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=678, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10681, PETRI_PLACES=396, PETRI_TRANSITIONS=733} [2024-06-27 23:47:58,157 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 353 predicate places. [2024-06-27 23:47:58,157 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 733 transitions, 10681 flow [2024-06-27 23:47:58,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:58,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:47:58,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:47:58,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 23:47:58,158 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:47:58,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:47:58,158 INFO L85 PathProgramCache]: Analyzing trace with hash 226502427, now seen corresponding path program 1 times [2024-06-27 23:47:58,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:47:58,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650443644] [2024-06-27 23:47:58,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:47:58,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:47:58,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:48:00,549 INFO 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 23:48:00,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:48:00,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650443644] [2024-06-27 23:48:00,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650443644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:48:00,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:48:00,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:48:00,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577119115] [2024-06-27 23:48:00,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:48:00,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:48:00,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:48:00,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:48:00,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:48:00,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-27 23:48:00,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 733 transitions, 10681 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:00,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:48:00,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-27 23:48:00,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:48:03,047 INFO L124 PetriNetUnfolderBase]: 5296/8185 cut-off events. [2024-06-27 23:48:03,047 INFO L125 PetriNetUnfolderBase]: For 1421024/1421024 co-relation queries the response was YES. [2024-06-27 23:48:03,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79228 conditions, 8185 events. 5296/8185 cut-off events. For 1421024/1421024 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 48779 event pairs, 2086 based on Foata normal form. 1/8185 useless extension candidates. Maximal degree in co-relation 79033. Up to 8013 conditions per place. [2024-06-27 23:48:03,468 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 705 selfloop transitions, 46 changer transitions 0/754 dead transitions. [2024-06-27 23:48:03,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 754 transitions, 12539 flow [2024-06-27 23:48:03,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:48:03,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:48:03,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 160 transitions. [2024-06-27 23:48:03,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463203463203463 [2024-06-27 23:48:03,469 INFO L175 Difference]: Start difference. First operand has 396 places, 733 transitions, 10681 flow. Second operand 11 states and 160 transitions. [2024-06-27 23:48:03,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 754 transitions, 12539 flow [2024-06-27 23:48:07,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 754 transitions, 12424 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 23:48:07,857 INFO L231 Difference]: Finished difference. Result has 402 places, 739 transitions, 10771 flow [2024-06-27 23:48:07,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10566, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=733, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=690, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10771, PETRI_PLACES=402, PETRI_TRANSITIONS=739} [2024-06-27 23:48:07,858 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 359 predicate places. [2024-06-27 23:48:07,858 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 739 transitions, 10771 flow [2024-06-27 23:48:07,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:07,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:48:07,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:48:07,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 23:48:07,859 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:48:07,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:48:07,861 INFO L85 PathProgramCache]: Analyzing trace with hash -348766787, now seen corresponding path program 2 times [2024-06-27 23:48:07,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:48:07,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872023993] [2024-06-27 23:48:07,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:48:07,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:48:07,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:48:10,407 INFO 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 23:48:10,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:48:10,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872023993] [2024-06-27 23:48:10,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872023993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:48:10,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:48:10,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:48:10,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962998107] [2024-06-27 23:48:10,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:48:10,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:48:10,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:48:10,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:48:10,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:48:10,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-27 23:48:10,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 739 transitions, 10771 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:10,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:48:10,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-27 23:48:10,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:48:12,963 INFO L124 PetriNetUnfolderBase]: 5301/8192 cut-off events. [2024-06-27 23:48:12,963 INFO L125 PetriNetUnfolderBase]: For 1448615/1448619 co-relation queries the response was YES. [2024-06-27 23:48:13,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79904 conditions, 8192 events. 5301/8192 cut-off events. For 1448615/1448619 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 48857 event pairs, 2034 based on Foata normal form. 5/8196 useless extension candidates. Maximal degree in co-relation 79707. Up to 8019 conditions per place. [2024-06-27 23:48:13,095 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 701 selfloop transitions, 49 changer transitions 0/753 dead transitions. [2024-06-27 23:48:13,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 753 transitions, 12575 flow [2024-06-27 23:48:13,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:48:13,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:48:13,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 133 transitions. [2024-06-27 23:48:13,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35185185185185186 [2024-06-27 23:48:13,096 INFO L175 Difference]: Start difference. First operand has 402 places, 739 transitions, 10771 flow. Second operand 9 states and 133 transitions. [2024-06-27 23:48:13,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 753 transitions, 12575 flow [2024-06-27 23:48:17,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 753 transitions, 12394 flow, removed 46 selfloop flow, removed 9 redundant places. [2024-06-27 23:48:17,053 INFO L231 Difference]: Finished difference. Result has 402 places, 742 transitions, 10750 flow [2024-06-27 23:48:17,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10614, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=739, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=693, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10750, PETRI_PLACES=402, PETRI_TRANSITIONS=742} [2024-06-27 23:48:17,054 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 359 predicate places. [2024-06-27 23:48:17,054 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 742 transitions, 10750 flow [2024-06-27 23:48:17,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:17,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:48:17,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:48:17,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 23:48:17,054 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:48:17,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:48:17,055 INFO L85 PathProgramCache]: Analyzing trace with hash -2064998819, now seen corresponding path program 3 times [2024-06-27 23:48:17,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:48:17,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965749925] [2024-06-27 23:48:17,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:48:17,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:48:17,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:48:19,425 INFO 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 23:48:19,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:48:19,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965749925] [2024-06-27 23:48:19,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965749925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:48:19,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:48:19,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:48:19,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379354502] [2024-06-27 23:48:19,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:48:19,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:48:19,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:48:19,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:48:19,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:48:19,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-27 23:48:19,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 742 transitions, 10750 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:19,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:48:19,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-27 23:48:19,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:48:21,926 INFO L124 PetriNetUnfolderBase]: 5306/8199 cut-off events. [2024-06-27 23:48:21,926 INFO L125 PetriNetUnfolderBase]: For 1473294/1473298 co-relation queries the response was YES. [2024-06-27 23:48:22,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80164 conditions, 8199 events. 5306/8199 cut-off events. For 1473294/1473298 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 48889 event pairs, 2034 based on Foata normal form. 5/8203 useless extension candidates. Maximal degree in co-relation 79966. Up to 8025 conditions per place. [2024-06-27 23:48:22,060 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 702 selfloop transitions, 53 changer transitions 0/758 dead transitions. [2024-06-27 23:48:22,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 758 transitions, 12552 flow [2024-06-27 23:48:22,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:48:22,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:48:22,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 157 transitions. [2024-06-27 23:48:22,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3398268398268398 [2024-06-27 23:48:22,061 INFO L175 Difference]: Start difference. First operand has 402 places, 742 transitions, 10750 flow. Second operand 11 states and 157 transitions. [2024-06-27 23:48:22,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 758 transitions, 12552 flow [2024-06-27 23:48:25,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 758 transitions, 12463 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 23:48:25,053 INFO L231 Difference]: Finished difference. Result has 408 places, 745 transitions, 10811 flow [2024-06-27 23:48:25,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10664, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=742, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=692, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10811, PETRI_PLACES=408, PETRI_TRANSITIONS=745} [2024-06-27 23:48:25,053 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 365 predicate places. [2024-06-27 23:48:25,054 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 745 transitions, 10811 flow [2024-06-27 23:48:25,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:25,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:48:25,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:48:25,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 23:48:25,054 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:48:25,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:48:25,056 INFO L85 PathProgramCache]: Analyzing trace with hash -66501422, now seen corresponding path program 4 times [2024-06-27 23:48:25,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:48:25,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017169130] [2024-06-27 23:48:25,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:48:25,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:48:25,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:48:27,444 INFO 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 23:48:27,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:48:27,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017169130] [2024-06-27 23:48:27,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017169130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:48:27,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:48:27,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:48:27,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324387143] [2024-06-27 23:48:27,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:48:27,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:48:27,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:48:27,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:48:27,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:48:27,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-27 23:48:27,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 745 transitions, 10811 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:27,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:48:27,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-27 23:48:27,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:48:30,157 INFO L124 PetriNetUnfolderBase]: 5316/8214 cut-off events. [2024-06-27 23:48:30,157 INFO L125 PetriNetUnfolderBase]: For 1504565/1504565 co-relation queries the response was YES. [2024-06-27 23:48:30,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80543 conditions, 8214 events. 5316/8214 cut-off events. For 1504565/1504565 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 48950 event pairs, 2026 based on Foata normal form. 2/8215 useless extension candidates. Maximal degree in co-relation 80344. Up to 7971 conditions per place. [2024-06-27 23:48:30,287 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 700 selfloop transitions, 59 changer transitions 0/762 dead transitions. [2024-06-27 23:48:30,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 762 transitions, 12711 flow [2024-06-27 23:48:30,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:48:30,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:48:30,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-06-27 23:48:30,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3898809523809524 [2024-06-27 23:48:30,288 INFO L175 Difference]: Start difference. First operand has 408 places, 745 transitions, 10811 flow. Second operand 8 states and 131 transitions. [2024-06-27 23:48:30,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 762 transitions, 12711 flow [2024-06-27 23:48:33,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 762 transitions, 12557 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-27 23:48:33,329 INFO L231 Difference]: Finished difference. Result has 405 places, 748 transitions, 10841 flow [2024-06-27 23:48:33,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10657, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=745, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=689, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10841, PETRI_PLACES=405, PETRI_TRANSITIONS=748} [2024-06-27 23:48:33,329 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 362 predicate places. [2024-06-27 23:48:33,329 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 748 transitions, 10841 flow [2024-06-27 23:48:33,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:33,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:48:33,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:48:33,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 23:48:33,330 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:48:33,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:48:33,330 INFO L85 PathProgramCache]: Analyzing trace with hash -2072356266, now seen corresponding path program 5 times [2024-06-27 23:48:33,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:48:33,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389154813] [2024-06-27 23:48:33,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:48:33,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:48:33,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:48:35,712 INFO 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 23:48:35,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:48:35,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389154813] [2024-06-27 23:48:35,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389154813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:48:35,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:48:35,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:48:35,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359785486] [2024-06-27 23:48:35,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:48:35,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:48:35,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:48:35,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:48:35,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:48:35,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-27 23:48:35,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 748 transitions, 10841 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:35,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:48:35,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-27 23:48:35,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:48:38,249 INFO L124 PetriNetUnfolderBase]: 5326/8228 cut-off events. [2024-06-27 23:48:38,249 INFO L125 PetriNetUnfolderBase]: For 1531052/1531052 co-relation queries the response was YES. [2024-06-27 23:48:38,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80956 conditions, 8228 events. 5326/8228 cut-off events. For 1531052/1531052 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 49056 event pairs, 2042 based on Foata normal form. 2/8229 useless extension candidates. Maximal degree in co-relation 80756. Up to 7981 conditions per place. [2024-06-27 23:48:38,379 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 703 selfloop transitions, 59 changer transitions 0/765 dead transitions. [2024-06-27 23:48:38,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 765 transitions, 12755 flow [2024-06-27 23:48:38,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:48:38,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:48:38,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-27 23:48:38,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-27 23:48:38,380 INFO L175 Difference]: Start difference. First operand has 405 places, 748 transitions, 10841 flow. Second operand 8 states and 132 transitions. [2024-06-27 23:48:38,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 765 transitions, 12755 flow [2024-06-27 23:48:41,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 765 transitions, 12640 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-27 23:48:41,675 INFO L231 Difference]: Finished difference. Result has 409 places, 751 transitions, 10916 flow [2024-06-27 23:48:41,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10739, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=748, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=692, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10916, PETRI_PLACES=409, PETRI_TRANSITIONS=751} [2024-06-27 23:48:41,676 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 366 predicate places. [2024-06-27 23:48:41,676 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 751 transitions, 10916 flow [2024-06-27 23:48:41,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:41,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:48:41,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:48:41,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 23:48:41,677 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:48:41,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:48:41,679 INFO L85 PathProgramCache]: Analyzing trace with hash -66703232, now seen corresponding path program 6 times [2024-06-27 23:48:41,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:48:41,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878052661] [2024-06-27 23:48:41,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:48:41,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:48:41,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:48:44,055 INFO 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 23:48:44,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:48:44,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878052661] [2024-06-27 23:48:44,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878052661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:48:44,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:48:44,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:48:44,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874883551] [2024-06-27 23:48:44,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:48:44,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:48:44,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:48:44,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:48:44,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:48:44,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-27 23:48:44,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 751 transitions, 10916 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:44,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:48:44,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-27 23:48:44,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:48:46,767 INFO L124 PetriNetUnfolderBase]: 5320/8220 cut-off events. [2024-06-27 23:48:46,767 INFO L125 PetriNetUnfolderBase]: For 1544597/1544597 co-relation queries the response was YES. [2024-06-27 23:48:46,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80861 conditions, 8220 events. 5320/8220 cut-off events. For 1544597/1544597 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 48993 event pairs, 2028 based on Foata normal form. 2/8221 useless extension candidates. Maximal degree in co-relation 80658. Up to 7976 conditions per place. [2024-06-27 23:48:46,906 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 704 selfloop transitions, 58 changer transitions 0/765 dead transitions. [2024-06-27 23:48:46,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 765 transitions, 12572 flow [2024-06-27 23:48:46,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:48:46,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:48:46,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-27 23:48:46,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-27 23:48:46,907 INFO L175 Difference]: Start difference. First operand has 409 places, 751 transitions, 10916 flow. Second operand 8 states and 133 transitions. [2024-06-27 23:48:46,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 765 transitions, 12572 flow [2024-06-27 23:48:50,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 765 transitions, 12373 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-06-27 23:48:50,274 INFO L231 Difference]: Finished difference. Result has 412 places, 751 transitions, 10841 flow [2024-06-27 23:48:50,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10717, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=751, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=693, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10841, PETRI_PLACES=412, PETRI_TRANSITIONS=751} [2024-06-27 23:48:50,275 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 369 predicate places. [2024-06-27 23:48:50,275 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 751 transitions, 10841 flow [2024-06-27 23:48:50,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:50,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:48:50,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:48:50,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 23:48:50,276 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:48:50,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:48:50,276 INFO L85 PathProgramCache]: Analyzing trace with hash -2072350469, now seen corresponding path program 4 times [2024-06-27 23:48:50,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:48:50,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652273042] [2024-06-27 23:48:50,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:48:50,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:48:50,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:48:52,806 INFO 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 23:48:52,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:48:52,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652273042] [2024-06-27 23:48:52,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652273042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:48:52,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:48:52,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:48:52,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259684762] [2024-06-27 23:48:52,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:48:52,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:48:52,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:48:52,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:48:52,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:48:52,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-27 23:48:52,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 751 transitions, 10841 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:52,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:48:52,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-27 23:48:52,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:48:55,404 INFO L124 PetriNetUnfolderBase]: 5317/8215 cut-off events. [2024-06-27 23:48:55,404 INFO L125 PetriNetUnfolderBase]: For 1557646/1557650 co-relation queries the response was YES. [2024-06-27 23:48:55,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80818 conditions, 8215 events. 5317/8215 cut-off events. For 1557646/1557650 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 49005 event pairs, 2022 based on Foata normal form. 5/8219 useless extension candidates. Maximal degree in co-relation 80612. Up to 8042 conditions per place. [2024-06-27 23:48:55,540 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 709 selfloop transitions, 51 changer transitions 0/763 dead transitions. [2024-06-27 23:48:55,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 763 transitions, 12401 flow [2024-06-27 23:48:55,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:48:55,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:48:55,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 157 transitions. [2024-06-27 23:48:55,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3398268398268398 [2024-06-27 23:48:55,541 INFO L175 Difference]: Start difference. First operand has 412 places, 751 transitions, 10841 flow. Second operand 11 states and 157 transitions. [2024-06-27 23:48:55,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 763 transitions, 12401 flow [2024-06-27 23:48:58,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 763 transitions, 12263 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 23:48:58,363 INFO L231 Difference]: Finished difference. Result has 418 places, 751 transitions, 10811 flow [2024-06-27 23:48:58,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10703, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=751, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=700, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10811, PETRI_PLACES=418, PETRI_TRANSITIONS=751} [2024-06-27 23:48:58,364 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 375 predicate places. [2024-06-27 23:48:58,364 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 751 transitions, 10811 flow [2024-06-27 23:48:58,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:58,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:48:58,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:48:58,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 23:48:58,364 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:48:58,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:48:58,364 INFO L85 PathProgramCache]: Analyzing trace with hash 603682281, now seen corresponding path program 1 times [2024-06-27 23:48:58,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:48:58,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123425747] [2024-06-27 23:48:58,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:48:58,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:48:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:49:00,054 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 23:49:00,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:49:00,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123425747] [2024-06-27 23:49:00,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123425747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:49:00,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:49:00,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:49:00,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350987837] [2024-06-27 23:49:00,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:49:00,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:49:00,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:49:00,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:49:00,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:49:00,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-06-27 23:49:00,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 751 transitions, 10811 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:00,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:49:00,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-06-27 23:49:00,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:49:02,307 INFO L124 PetriNetUnfolderBase]: 4427/7255 cut-off events. [2024-06-27 23:49:02,307 INFO L125 PetriNetUnfolderBase]: For 1662356/1662603 co-relation queries the response was YES. [2024-06-27 23:49:02,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74131 conditions, 7255 events. 4427/7255 cut-off events. For 1662356/1662603 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 47234 event pairs, 1114 based on Foata normal form. 51/7201 useless extension candidates. Maximal degree in co-relation 73923. Up to 6013 conditions per place. [2024-06-27 23:49:02,433 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 577 selfloop transitions, 88 changer transitions 0/786 dead transitions. [2024-06-27 23:49:02,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 786 transitions, 12613 flow [2024-06-27 23:49:02,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:49:02,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:49:02,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 167 transitions. [2024-06-27 23:49:02,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49702380952380953 [2024-06-27 23:49:02,434 INFO L175 Difference]: Start difference. First operand has 418 places, 751 transitions, 10811 flow. Second operand 8 states and 167 transitions. [2024-06-27 23:49:02,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 786 transitions, 12613 flow [2024-06-27 23:49:06,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 786 transitions, 12462 flow, removed 0 selfloop flow, removed 13 redundant places. [2024-06-27 23:49:06,279 INFO L231 Difference]: Finished difference. Result has 413 places, 761 transitions, 11012 flow [2024-06-27 23:49:06,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10660, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=751, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=669, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11012, PETRI_PLACES=413, PETRI_TRANSITIONS=761} [2024-06-27 23:49:06,279 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 370 predicate places. [2024-06-27 23:49:06,279 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 761 transitions, 11012 flow [2024-06-27 23:49:06,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:06,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:49:06,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:49:06,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 23:49:06,280 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:49:06,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:49:06,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1143665155, now seen corresponding path program 1 times [2024-06-27 23:49:06,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:49:06,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584724087] [2024-06-27 23:49:06,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:49:06,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:49:06,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:49:08,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:49:08,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:49:08,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584724087] [2024-06-27 23:49:08,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584724087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:49:08,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:49:08,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:49:08,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65628396] [2024-06-27 23:49:08,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:49:08,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:49:08,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:49:08,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:49:08,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:49:08,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:49:08,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 761 transitions, 11012 flow. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:08,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:49:08,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:49:08,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:49:11,545 INFO L124 PetriNetUnfolderBase]: 5291/8220 cut-off events. [2024-06-27 23:49:11,545 INFO L125 PetriNetUnfolderBase]: For 1675603/1675628 co-relation queries the response was YES. [2024-06-27 23:49:11,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82729 conditions, 8220 events. 5291/8220 cut-off events. For 1675603/1675628 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 49708 event pairs, 1552 based on Foata normal form. 8/8213 useless extension candidates. Maximal degree in co-relation 82521. Up to 7611 conditions per place. [2024-06-27 23:49:11,674 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 684 selfloop transitions, 119 changer transitions 0/827 dead transitions. [2024-06-27 23:49:11,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 827 transitions, 14117 flow [2024-06-27 23:49:11,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:49:11,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:49:11,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-27 23:49:11,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-27 23:49:11,676 INFO L175 Difference]: Start difference. First operand has 413 places, 761 transitions, 11012 flow. Second operand 10 states and 195 transitions. [2024-06-27 23:49:11,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 827 transitions, 14117 flow [2024-06-27 23:49:15,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 827 transitions, 14032 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-27 23:49:15,809 INFO L231 Difference]: Finished difference. Result has 422 places, 788 transitions, 11895 flow [2024-06-27 23:49:15,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10927, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=761, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=655, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11895, PETRI_PLACES=422, PETRI_TRANSITIONS=788} [2024-06-27 23:49:15,809 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 379 predicate places. [2024-06-27 23:49:15,809 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 788 transitions, 11895 flow [2024-06-27 23:49:15,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:15,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:49:15,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:49:15,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 23:49:15,810 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:49:15,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:49:15,810 INFO L85 PathProgramCache]: Analyzing trace with hash -751702915, now seen corresponding path program 2 times [2024-06-27 23:49:15,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:49:15,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372566291] [2024-06-27 23:49:15,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:49:15,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:49:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:49:17,840 INFO 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 23:49:17,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:49:17,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372566291] [2024-06-27 23:49:17,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372566291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:49:17,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:49:17,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:49:17,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685959724] [2024-06-27 23:49:17,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:49:17,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:49:17,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:49:17,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:49:17,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:49:17,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:49:17,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 788 transitions, 11895 flow. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:17,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:49:17,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:49:17,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:49:20,652 INFO L124 PetriNetUnfolderBase]: 5285/8212 cut-off events. [2024-06-27 23:49:20,652 INFO L125 PetriNetUnfolderBase]: For 1699277/1699302 co-relation queries the response was YES. [2024-06-27 23:49:20,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83901 conditions, 8212 events. 5285/8212 cut-off events. For 1699277/1699302 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 49627 event pairs, 1559 based on Foata normal form. 8/8205 useless extension candidates. Maximal degree in co-relation 83689. Up to 7606 conditions per place. [2024-06-27 23:49:20,789 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 675 selfloop transitions, 129 changer transitions 0/828 dead transitions. [2024-06-27 23:49:20,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 828 transitions, 14197 flow [2024-06-27 23:49:20,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:49:20,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:49:20,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 204 transitions. [2024-06-27 23:49:20,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44155844155844154 [2024-06-27 23:49:20,791 INFO L175 Difference]: Start difference. First operand has 422 places, 788 transitions, 11895 flow. Second operand 11 states and 204 transitions. [2024-06-27 23:49:20,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 828 transitions, 14197 flow [2024-06-27 23:49:25,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 828 transitions, 13854 flow, removed 157 selfloop flow, removed 2 redundant places. [2024-06-27 23:49:25,491 INFO L231 Difference]: Finished difference. Result has 432 places, 792 transitions, 11923 flow [2024-06-27 23:49:25,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=11574, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=788, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=661, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11923, PETRI_PLACES=432, PETRI_TRANSITIONS=792} [2024-06-27 23:49:25,492 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 389 predicate places. [2024-06-27 23:49:25,492 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 792 transitions, 11923 flow [2024-06-27 23:49:25,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:25,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:49:25,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:49:25,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 23:49:25,493 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:49:25,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:49:25,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1541222307, now seen corresponding path program 2 times [2024-06-27 23:49:25,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:49:25,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778242442] [2024-06-27 23:49:25,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:49:25,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:49:25,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:49:28,638 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 23:49:28,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:49:28,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778242442] [2024-06-27 23:49:28,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778242442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:49:28,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:49:28,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:49:28,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427989685] [2024-06-27 23:49:28,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:49:28,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:49:28,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:49:28,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:49:28,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:49:28,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-27 23:49:28,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 792 transitions, 11923 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:28,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:49:28,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-27 23:49:28,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:49:31,212 INFO L124 PetriNetUnfolderBase]: 5300/8225 cut-off events. [2024-06-27 23:49:31,212 INFO L125 PetriNetUnfolderBase]: For 1720044/1720073 co-relation queries the response was YES. [2024-06-27 23:49:31,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83683 conditions, 8225 events. 5300/8225 cut-off events. For 1720044/1720073 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 49372 event pairs, 1390 based on Foata normal form. 12/8223 useless extension candidates. Maximal degree in co-relation 83468. Up to 7698 conditions per place. [2024-06-27 23:49:31,352 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 704 selfloop transitions, 100 changer transitions 0/828 dead transitions. [2024-06-27 23:49:31,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 828 transitions, 13955 flow [2024-06-27 23:49:31,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:49:31,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:49:31,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-27 23:49:31,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-27 23:49:31,353 INFO L175 Difference]: Start difference. First operand has 432 places, 792 transitions, 11923 flow. Second operand 9 states and 175 transitions. [2024-06-27 23:49:31,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 828 transitions, 13955 flow [2024-06-27 23:49:35,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 828 transitions, 13703 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-27 23:49:35,811 INFO L231 Difference]: Finished difference. Result has 434 places, 796 transitions, 11934 flow [2024-06-27 23:49:35,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=11671, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=792, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=696, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11934, PETRI_PLACES=434, PETRI_TRANSITIONS=796} [2024-06-27 23:49:35,811 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 391 predicate places. [2024-06-27 23:49:35,812 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 796 transitions, 11934 flow [2024-06-27 23:49:35,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:35,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:49:35,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:49:35,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 23:49:35,812 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:49:35,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:49:35,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1009775001, now seen corresponding path program 1 times [2024-06-27 23:49:35,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:49:35,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182989015] [2024-06-27 23:49:35,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:49:35,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:49:35,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:49:39,041 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 23:49:39,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:49:39,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182989015] [2024-06-27 23:49:39,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182989015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:49:39,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:49:39,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:49:39,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589919281] [2024-06-27 23:49:39,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:49:39,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:49:39,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:49:39,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:49:39,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:49:39,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:49:39,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 796 transitions, 11934 flow. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:39,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:49:39,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:49:39,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:49:41,891 INFO L124 PetriNetUnfolderBase]: 5408/8338 cut-off events. [2024-06-27 23:49:41,891 INFO L125 PetriNetUnfolderBase]: For 1722655/1722663 co-relation queries the response was YES. [2024-06-27 23:49:41,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84507 conditions, 8338 events. 5408/8338 cut-off events. For 1722655/1722663 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 49797 event pairs, 1655 based on Foata normal form. 7/8344 useless extension candidates. Maximal degree in co-relation 84290. Up to 7977 conditions per place. [2024-06-27 23:49:42,008 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 718 selfloop transitions, 112 changer transitions 0/833 dead transitions. [2024-06-27 23:49:42,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 833 transitions, 14063 flow [2024-06-27 23:49:42,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:49:42,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:49:42,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-27 23:49:42,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417989417989418 [2024-06-27 23:49:42,010 INFO L175 Difference]: Start difference. First operand has 434 places, 796 transitions, 11934 flow. Second operand 9 states and 167 transitions. [2024-06-27 23:49:42,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 833 transitions, 14063 flow [2024-06-27 23:49:45,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 833 transitions, 13835 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-27 23:49:45,784 INFO L231 Difference]: Finished difference. Result has 438 places, 806 transitions, 12098 flow [2024-06-27 23:49:45,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=11706, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=796, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=692, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12098, PETRI_PLACES=438, PETRI_TRANSITIONS=806} [2024-06-27 23:49:45,784 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 395 predicate places. [2024-06-27 23:49:45,785 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 806 transitions, 12098 flow [2024-06-27 23:49:45,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:45,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:49:45,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:49:45,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 23:49:45,785 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:49:45,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:49:45,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1009784611, now seen corresponding path program 3 times [2024-06-27 23:49:45,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:49:45,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341094097] [2024-06-27 23:49:45,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:49:45,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:49:45,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:49:49,047 INFO 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 23:49:49,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:49:49,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341094097] [2024-06-27 23:49:49,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341094097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:49:49,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:49:49,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:49:49,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179166765] [2024-06-27 23:49:49,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:49:49,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:49:49,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:49:49,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:49:49,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:49:49,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-27 23:49:49,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 806 transitions, 12098 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:49,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:49:49,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-27 23:49:49,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:49:51,843 INFO L124 PetriNetUnfolderBase]: 5313/8246 cut-off events. [2024-06-27 23:49:51,843 INFO L125 PetriNetUnfolderBase]: For 1761624/1761633 co-relation queries the response was YES. [2024-06-27 23:49:51,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84099 conditions, 8246 events. 5313/8246 cut-off events. For 1761624/1761633 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 49782 event pairs, 1599 based on Foata normal form. 8/8244 useless extension candidates. Maximal degree in co-relation 83880. Up to 7811 conditions per place. [2024-06-27 23:49:51,984 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 715 selfloop transitions, 92 changer transitions 0/835 dead transitions. [2024-06-27 23:49:51,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 835 transitions, 13860 flow [2024-06-27 23:49:51,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:49:51,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:49:51,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-27 23:49:51,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497354497354497 [2024-06-27 23:49:51,985 INFO L175 Difference]: Start difference. First operand has 438 places, 806 transitions, 12098 flow. Second operand 9 states and 170 transitions. [2024-06-27 23:49:51,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 835 transitions, 13860 flow [2024-06-27 23:49:56,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 835 transitions, 13667 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-27 23:49:56,488 INFO L231 Difference]: Finished difference. Result has 440 places, 808 transitions, 12131 flow [2024-06-27 23:49:56,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=11905, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=806, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=714, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12131, PETRI_PLACES=440, PETRI_TRANSITIONS=808} [2024-06-27 23:49:56,489 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 397 predicate places. [2024-06-27 23:49:56,489 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 808 transitions, 12131 flow [2024-06-27 23:49:56,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:56,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:49:56,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:49:56,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 23:49:56,489 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:49:56,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:49:56,489 INFO L85 PathProgramCache]: Analyzing trace with hash -751496641, now seen corresponding path program 4 times [2024-06-27 23:49:56,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:49:56,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327875348] [2024-06-27 23:49:56,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:49:56,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:49:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:49:59,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:49:59,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:49:59,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327875348] [2024-06-27 23:49:59,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327875348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:49:59,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:49:59,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:49:59,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761786017] [2024-06-27 23:49:59,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:49:59,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:49:59,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:49:59,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:49:59,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:49:59,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-27 23:49:59,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 808 transitions, 12131 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:59,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:49:59,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-27 23:49:59,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:02,354 INFO L124 PetriNetUnfolderBase]: 5318/8257 cut-off events. [2024-06-27 23:50:02,354 INFO L125 PetriNetUnfolderBase]: For 1784110/1784113 co-relation queries the response was YES. [2024-06-27 23:50:02,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84247 conditions, 8257 events. 5318/8257 cut-off events. For 1784110/1784113 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 49815 event pairs, 1621 based on Foata normal form. 4/8257 useless extension candidates. Maximal degree in co-relation 84030. Up to 7882 conditions per place. [2024-06-27 23:50:02,488 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 726 selfloop transitions, 78 changer transitions 0/832 dead transitions. [2024-06-27 23:50:02,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 832 transitions, 13865 flow [2024-06-27 23:50:02,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:50:02,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:50:02,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 23:50:02,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4312169312169312 [2024-06-27 23:50:02,490 INFO L175 Difference]: Start difference. First operand has 440 places, 808 transitions, 12131 flow. Second operand 9 states and 163 transitions. [2024-06-27 23:50:02,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 832 transitions, 13865 flow [2024-06-27 23:50:07,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 832 transitions, 13667 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 23:50:07,037 INFO L231 Difference]: Finished difference. Result has 442 places, 810 transitions, 12132 flow [2024-06-27 23:50:07,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=11933, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=808, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=730, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12132, PETRI_PLACES=442, PETRI_TRANSITIONS=810} [2024-06-27 23:50:07,038 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 399 predicate places. [2024-06-27 23:50:07,038 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 810 transitions, 12132 flow [2024-06-27 23:50:07,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:07,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:07,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:07,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 23:50:07,038 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:50:07,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:07,038 INFO L85 PathProgramCache]: Analyzing trace with hash -751487031, now seen corresponding path program 2 times [2024-06-27 23:50:07,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:07,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783992772] [2024-06-27 23:50:07,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:07,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:07,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:09,927 INFO 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 23:50:09,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:09,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783992772] [2024-06-27 23:50:09,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783992772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:09,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:09,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:50:09,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951180025] [2024-06-27 23:50:09,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:09,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:50:09,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:09,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:50:09,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:50:10,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:50:10,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 810 transitions, 12132 flow. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:10,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:10,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:50:10,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:12,495 INFO L124 PetriNetUnfolderBase]: 5452/8406 cut-off events. [2024-06-27 23:50:12,496 INFO L125 PetriNetUnfolderBase]: For 1814676/1814679 co-relation queries the response was YES. [2024-06-27 23:50:12,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85750 conditions, 8406 events. 5452/8406 cut-off events. For 1814676/1814679 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 50252 event pairs, 1677 based on Foata normal form. 3/8408 useless extension candidates. Maximal degree in co-relation 85532. Up to 8107 conditions per place. [2024-06-27 23:50:12,641 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 735 selfloop transitions, 109 changer transitions 0/847 dead transitions. [2024-06-27 23:50:12,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 847 transitions, 14326 flow [2024-06-27 23:50:12,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:50:12,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:50:12,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-27 23:50:12,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-06-27 23:50:12,643 INFO L175 Difference]: Start difference. First operand has 442 places, 810 transitions, 12132 flow. Second operand 9 states and 161 transitions. [2024-06-27 23:50:12,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 847 transitions, 14326 flow [2024-06-27 23:50:17,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 847 transitions, 14149 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 23:50:17,647 INFO L231 Difference]: Finished difference. Result has 444 places, 825 transitions, 12363 flow [2024-06-27 23:50:17,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=11955, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=810, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=713, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12363, PETRI_PLACES=444, PETRI_TRANSITIONS=825} [2024-06-27 23:50:17,647 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 401 predicate places. [2024-06-27 23:50:17,647 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 825 transitions, 12363 flow [2024-06-27 23:50:17,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:17,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:17,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:17,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 23:50:17,648 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:50:17,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:17,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1210178841, now seen corresponding path program 3 times [2024-06-27 23:50:17,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:17,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837599417] [2024-06-27 23:50:17,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:17,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:17,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:20,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:50:20,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:20,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837599417] [2024-06-27 23:50:20,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837599417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:20,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:20,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:50:20,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406356496] [2024-06-27 23:50:20,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:20,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:50:20,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:20,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:50:20,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:50:20,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-27 23:50:20,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 825 transitions, 12363 flow. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:20,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:20,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-27 23:50:20,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:23,464 INFO L124 PetriNetUnfolderBase]: 5467/8427 cut-off events. [2024-06-27 23:50:23,464 INFO L125 PetriNetUnfolderBase]: For 1842906/1842909 co-relation queries the response was YES. [2024-06-27 23:50:23,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86176 conditions, 8427 events. 5467/8427 cut-off events. For 1842906/1842909 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 50399 event pairs, 1679 based on Foata normal form. 3/8429 useless extension candidates. Maximal degree in co-relation 85957. Up to 8143 conditions per place. [2024-06-27 23:50:23,608 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 745 selfloop transitions, 111 changer transitions 0/859 dead transitions. [2024-06-27 23:50:23,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 859 transitions, 14301 flow [2024-06-27 23:50:23,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:50:23,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:50:23,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-27 23:50:23,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-27 23:50:23,610 INFO L175 Difference]: Start difference. First operand has 444 places, 825 transitions, 12363 flow. Second operand 10 states and 165 transitions. [2024-06-27 23:50:23,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 859 transitions, 14301 flow [2024-06-27 23:50:28,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 859 transitions, 14154 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-27 23:50:28,463 INFO L231 Difference]: Finished difference. Result has 450 places, 834 transitions, 12575 flow [2024-06-27 23:50:28,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=12224, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=825, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=720, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12575, PETRI_PLACES=450, PETRI_TRANSITIONS=834} [2024-06-27 23:50:28,464 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 407 predicate places. [2024-06-27 23:50:28,464 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 834 transitions, 12575 flow [2024-06-27 23:50:28,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:28,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:28,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:28,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 23:50:28,464 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:50:28,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:28,465 INFO L85 PathProgramCache]: Analyzing trace with hash -568481767, now seen corresponding path program 3 times [2024-06-27 23:50:28,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:28,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683496030] [2024-06-27 23:50:28,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:28,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:28,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:30,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:50:30,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:30,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683496030] [2024-06-27 23:50:30,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683496030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:30,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:30,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:50:30,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189996020] [2024-06-27 23:50:30,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:30,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:50:30,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:30,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:50:30,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:50:31,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:50:31,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 834 transitions, 12575 flow. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:31,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:31,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:50:31,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:33,736 INFO L124 PetriNetUnfolderBase]: 5393/8353 cut-off events. [2024-06-27 23:50:33,736 INFO L125 PetriNetUnfolderBase]: For 1881696/1881708 co-relation queries the response was YES. [2024-06-27 23:50:33,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86182 conditions, 8353 events. 5393/8353 cut-off events. For 1881696/1881708 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 50258 event pairs, 1256 based on Foata normal form. 12/8364 useless extension candidates. Maximal degree in co-relation 85961. Up to 7868 conditions per place. [2024-06-27 23:50:33,883 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 729 selfloop transitions, 112 changer transitions 0/877 dead transitions. [2024-06-27 23:50:33,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 877 transitions, 14919 flow [2024-06-27 23:50:33,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:50:33,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:50:33,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-27 23:50:33,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46726190476190477 [2024-06-27 23:50:33,885 INFO L175 Difference]: Start difference. First operand has 450 places, 834 transitions, 12575 flow. Second operand 8 states and 157 transitions. [2024-06-27 23:50:33,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 877 transitions, 14919 flow [2024-06-27 23:50:39,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 877 transitions, 14749 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-27 23:50:39,327 INFO L231 Difference]: Finished difference. Result has 454 places, 852 transitions, 13024 flow [2024-06-27 23:50:39,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=12407, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=834, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=728, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13024, PETRI_PLACES=454, PETRI_TRANSITIONS=852} [2024-06-27 23:50:39,328 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 411 predicate places. [2024-06-27 23:50:39,328 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 852 transitions, 13024 flow [2024-06-27 23:50:39,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:39,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:39,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:39,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 23:50:39,328 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:50:39,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:39,328 INFO L85 PathProgramCache]: Analyzing trace with hash -562767847, now seen corresponding path program 4 times [2024-06-27 23:50:39,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:39,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678871077] [2024-06-27 23:50:39,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:39,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:39,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:41,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:50:41,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:41,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678871077] [2024-06-27 23:50:41,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678871077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:41,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:41,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:50:41,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79183851] [2024-06-27 23:50:41,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:41,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:50:41,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:41,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:50:41,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:50:41,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:50:41,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 852 transitions, 13024 flow. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:41,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:41,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:50:41,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:44,887 INFO L124 PetriNetUnfolderBase]: 5399/8361 cut-off events. [2024-06-27 23:50:44,888 INFO L125 PetriNetUnfolderBase]: For 1904564/1904576 co-relation queries the response was YES. [2024-06-27 23:50:44,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86693 conditions, 8361 events. 5399/8361 cut-off events. For 1904564/1904576 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 50294 event pairs, 1266 based on Foata normal form. 11/8371 useless extension candidates. Maximal degree in co-relation 86471. Up to 7875 conditions per place. [2024-06-27 23:50:45,018 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 728 selfloop transitions, 118 changer transitions 0/882 dead transitions. [2024-06-27 23:50:45,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 882 transitions, 15141 flow [2024-06-27 23:50:45,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:50:45,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:50:45,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 23:50:45,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4357142857142857 [2024-06-27 23:50:45,019 INFO L175 Difference]: Start difference. First operand has 454 places, 852 transitions, 13024 flow. Second operand 10 states and 183 transitions. [2024-06-27 23:50:45,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 882 transitions, 15141 flow [2024-06-27 23:50:50,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 882 transitions, 14969 flow, removed 59 selfloop flow, removed 2 redundant places. [2024-06-27 23:50:50,805 INFO L231 Difference]: Finished difference. Result has 462 places, 855 transitions, 13186 flow [2024-06-27 23:50:50,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=12854, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=852, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=737, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13186, PETRI_PLACES=462, PETRI_TRANSITIONS=855} [2024-06-27 23:50:50,805 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 419 predicate places. [2024-06-27 23:50:50,805 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 855 transitions, 13186 flow [2024-06-27 23:50:50,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:50,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:50,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:50,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 23:50:50,806 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:50:50,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:50,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1254454329, now seen corresponding path program 5 times [2024-06-27 23:50:50,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:50,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586889961] [2024-06-27 23:50:50,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:50,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:53,243 INFO 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 23:50:53,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:53,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586889961] [2024-06-27 23:50:53,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586889961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:53,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:53,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:50:53,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086617131] [2024-06-27 23:50:53,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:53,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:50:53,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:53,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:50:53,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:50:53,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:50:53,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 855 transitions, 13186 flow. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:53,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:53,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:50:53,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:56,200 INFO L124 PetriNetUnfolderBase]: 5428/8392 cut-off events. [2024-06-27 23:50:56,200 INFO L125 PetriNetUnfolderBase]: For 1960716/1960729 co-relation queries the response was YES. [2024-06-27 23:50:56,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87987 conditions, 8392 events. 5428/8392 cut-off events. For 1960716/1960729 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 50337 event pairs, 1165 based on Foata normal form. 13/8404 useless extension candidates. Maximal degree in co-relation 87763. Up to 7506 conditions per place. [2024-06-27 23:50:56,350 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 673 selfloop transitions, 205 changer transitions 0/914 dead transitions. [2024-06-27 23:50:56,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 914 transitions, 16716 flow [2024-06-27 23:50:56,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:50:56,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:50:56,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 164 transitions. [2024-06-27 23:50:56,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2024-06-27 23:50:56,351 INFO L175 Difference]: Start difference. First operand has 462 places, 855 transitions, 13186 flow. Second operand 8 states and 164 transitions. [2024-06-27 23:50:56,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 914 transitions, 16716 flow [2024-06-27 23:51:01,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 914 transitions, 16424 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-27 23:51:01,820 INFO L231 Difference]: Finished difference. Result has 465 places, 877 transitions, 14050 flow [2024-06-27 23:51:01,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=12894, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=855, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=661, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14050, PETRI_PLACES=465, PETRI_TRANSITIONS=877} [2024-06-27 23:51:01,820 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 422 predicate places. [2024-06-27 23:51:01,820 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 877 transitions, 14050 flow [2024-06-27 23:51:01,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:01,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:01,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:01,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 23:51:01,821 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:51:01,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:01,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1306470833, now seen corresponding path program 1 times [2024-06-27 23:51:01,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:01,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136154179] [2024-06-27 23:51:01,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:01,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:01,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:04,237 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 23:51:04,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:04,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136154179] [2024-06-27 23:51:04,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136154179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:04,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:04,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:51:04,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434492980] [2024-06-27 23:51:04,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:04,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:51:04,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:04,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:51:04,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:51:04,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:51:04,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 877 transitions, 14050 flow. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:04,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:04,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:51:04,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:07,173 INFO L124 PetriNetUnfolderBase]: 5433/8412 cut-off events. [2024-06-27 23:51:07,173 INFO L125 PetriNetUnfolderBase]: For 2001578/2001581 co-relation queries the response was YES. [2024-06-27 23:51:07,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89738 conditions, 8412 events. 5433/8412 cut-off events. For 2001578/2001581 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 50698 event pairs, 1547 based on Foata normal form. 3/8414 useless extension candidates. Maximal degree in co-relation 89511. Up to 7927 conditions per place. [2024-06-27 23:51:07,337 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 768 selfloop transitions, 101 changer transitions 0/905 dead transitions. [2024-06-27 23:51:07,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 905 transitions, 15970 flow [2024-06-27 23:51:07,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:51:07,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:51:07,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-27 23:51:07,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-27 23:51:07,338 INFO L175 Difference]: Start difference. First operand has 465 places, 877 transitions, 14050 flow. Second operand 8 states and 154 transitions. [2024-06-27 23:51:07,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 905 transitions, 15970 flow [2024-06-27 23:51:12,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 905 transitions, 15680 flow, removed 99 selfloop flow, removed 2 redundant places. [2024-06-27 23:51:12,963 INFO L231 Difference]: Finished difference. Result has 471 places, 880 transitions, 14043 flow [2024-06-27 23:51:12,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=13762, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=877, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=776, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14043, PETRI_PLACES=471, PETRI_TRANSITIONS=880} [2024-06-27 23:51:12,963 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 428 predicate places. [2024-06-27 23:51:12,963 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 880 transitions, 14043 flow [2024-06-27 23:51:12,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:12,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:12,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:12,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 23:51:12,964 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:51:12,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:12,966 INFO L85 PathProgramCache]: Analyzing trace with hash -452891695, now seen corresponding path program 1 times [2024-06-27 23:51:12,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:12,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228963895] [2024-06-27 23:51:12,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:12,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:15,353 INFO 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 23:51:15,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:15,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228963895] [2024-06-27 23:51:15,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228963895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:15,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:15,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:51:15,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226565296] [2024-06-27 23:51:15,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:15,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:51:15,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:15,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:51:15,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:51:15,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-27 23:51:15,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 880 transitions, 14043 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:15,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:15,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-27 23:51:15,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:18,258 INFO L124 PetriNetUnfolderBase]: 5560/8548 cut-off events. [2024-06-27 23:51:18,259 INFO L125 PetriNetUnfolderBase]: For 2041480/2041487 co-relation queries the response was YES. [2024-06-27 23:51:18,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91069 conditions, 8548 events. 5560/8548 cut-off events. For 2041480/2041487 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 51071 event pairs, 1617 based on Foata normal form. 7/8554 useless extension candidates. Maximal degree in co-relation 90840. Up to 8222 conditions per place. [2024-06-27 23:51:18,418 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 807 selfloop transitions, 108 changer transitions 0/918 dead transitions. [2024-06-27 23:51:18,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 918 transitions, 16941 flow [2024-06-27 23:51:18,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:51:18,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:51:18,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-27 23:51:18,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-27 23:51:18,419 INFO L175 Difference]: Start difference. First operand has 471 places, 880 transitions, 14043 flow. Second operand 8 states and 150 transitions. [2024-06-27 23:51:18,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 918 transitions, 16941 flow [2024-06-27 23:51:24,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 918 transitions, 16680 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-27 23:51:24,510 INFO L231 Difference]: Finished difference. Result has 473 places, 893 transitions, 14235 flow [2024-06-27 23:51:24,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=13782, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=880, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=782, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14235, PETRI_PLACES=473, PETRI_TRANSITIONS=893} [2024-06-27 23:51:24,511 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 430 predicate places. [2024-06-27 23:51:24,511 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 893 transitions, 14235 flow [2024-06-27 23:51:24,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:24,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:24,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:24,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 23:51:24,512 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:51:24,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:24,512 INFO L85 PathProgramCache]: Analyzing trace with hash -452892067, now seen corresponding path program 6 times [2024-06-27 23:51:24,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:24,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443895079] [2024-06-27 23:51:24,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:24,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:24,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:26,906 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 23:51:26,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:26,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443895079] [2024-06-27 23:51:26,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443895079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:26,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:26,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:51:26,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419911262] [2024-06-27 23:51:26,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:26,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:51:26,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:26,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:51:26,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:51:27,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:51:27,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 893 transitions, 14235 flow. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:27,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:27,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:51:27,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:30,120 INFO L124 PetriNetUnfolderBase]: 5468/8444 cut-off events. [2024-06-27 23:51:30,121 INFO L125 PetriNetUnfolderBase]: For 2070745/2070758 co-relation queries the response was YES. [2024-06-27 23:51:30,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90827 conditions, 8444 events. 5468/8444 cut-off events. For 2070745/2070758 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 50602 event pairs, 1152 based on Foata normal form. 13/8456 useless extension candidates. Maximal degree in co-relation 90597. Up to 7547 conditions per place. [2024-06-27 23:51:30,258 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 676 selfloop transitions, 213 changer transitions 0/929 dead transitions. [2024-06-27 23:51:30,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 929 transitions, 17066 flow [2024-06-27 23:51:30,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:51:30,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:51:30,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-06-27 23:51:30,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-27 23:51:30,260 INFO L175 Difference]: Start difference. First operand has 473 places, 893 transitions, 14235 flow. Second operand 8 states and 161 transitions. [2024-06-27 23:51:30,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 929 transitions, 17066 flow [2024-06-27 23:51:36,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 929 transitions, 16940 flow, removed 45 selfloop flow, removed 2 redundant places. [2024-06-27 23:51:36,072 INFO L231 Difference]: Finished difference. Result has 479 places, 896 transitions, 14613 flow [2024-06-27 23:51:36,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=14109, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=893, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=683, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14613, PETRI_PLACES=479, PETRI_TRANSITIONS=896} [2024-06-27 23:51:36,073 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 436 predicate places. [2024-06-27 23:51:36,073 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 896 transitions, 14613 flow [2024-06-27 23:51:36,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:36,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:36,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:36,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 23:51:36,074 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:51:36,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:36,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1306475483, now seen corresponding path program 2 times [2024-06-27 23:51:36,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:36,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158087462] [2024-06-27 23:51:36,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:36,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:36,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:38,488 INFO 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 23:51:38,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:38,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158087462] [2024-06-27 23:51:38,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158087462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:38,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:38,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:51:38,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201334803] [2024-06-27 23:51:38,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:38,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:51:38,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:38,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:51:38,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:51:38,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:51:38,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 896 transitions, 14613 flow. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:38,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:38,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:51:38,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:41,847 INFO L124 PetriNetUnfolderBase]: 5501/8504 cut-off events. [2024-06-27 23:51:41,847 INFO L125 PetriNetUnfolderBase]: For 2140121/2140124 co-relation queries the response was YES. [2024-06-27 23:51:41,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92657 conditions, 8504 events. 5501/8504 cut-off events. For 2140121/2140124 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 51285 event pairs, 1554 based on Foata normal form. 3/8506 useless extension candidates. Maximal degree in co-relation 92425. Up to 7846 conditions per place. [2024-06-27 23:51:41,984 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 769 selfloop transitions, 133 changer transitions 0/942 dead transitions. [2024-06-27 23:51:41,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 942 transitions, 17702 flow [2024-06-27 23:51:41,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:51:41,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:51:41,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-27 23:51:41,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-27 23:51:41,986 INFO L175 Difference]: Start difference. First operand has 479 places, 896 transitions, 14613 flow. Second operand 8 states and 160 transitions. [2024-06-27 23:51:41,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 942 transitions, 17702 flow [2024-06-27 23:51:47,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 942 transitions, 17292 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-27 23:51:47,751 INFO L231 Difference]: Finished difference. Result has 483 places, 917 transitions, 14949 flow [2024-06-27 23:51:47,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=14203, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=896, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=773, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14949, PETRI_PLACES=483, PETRI_TRANSITIONS=917} [2024-06-27 23:51:47,752 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 440 predicate places. [2024-06-27 23:51:47,752 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 917 transitions, 14949 flow [2024-06-27 23:51:47,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:47,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:47,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:47,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 23:51:47,752 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:51:47,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:47,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1052205785, now seen corresponding path program 7 times [2024-06-27 23:51:47,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:47,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755176229] [2024-06-27 23:51:47,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:47,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:47,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:50,196 INFO 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 23:51:50,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:50,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755176229] [2024-06-27 23:51:50,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755176229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:50,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:50,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:51:50,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898432388] [2024-06-27 23:51:50,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:50,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:51:50,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:50,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:51:50,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:51:50,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:51:50,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 917 transitions, 14949 flow. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:50,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:50,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:51:50,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:53,683 INFO L124 PetriNetUnfolderBase]: 5498/8497 cut-off events. [2024-06-27 23:51:53,684 INFO L125 PetriNetUnfolderBase]: For 2164842/2164851 co-relation queries the response was YES. [2024-06-27 23:51:53,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93152 conditions, 8497 events. 5498/8497 cut-off events. For 2164842/2164851 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 51105 event pairs, 1232 based on Foata normal form. 9/8505 useless extension candidates. Maximal degree in co-relation 92918. Up to 8047 conditions per place. [2024-06-27 23:51:53,828 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 802 selfloop transitions, 94 changer transitions 0/936 dead transitions. [2024-06-27 23:51:53,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 936 transitions, 16815 flow [2024-06-27 23:51:53,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:51:53,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:51:53,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-27 23:51:53,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-06-27 23:51:53,829 INFO L175 Difference]: Start difference. First operand has 483 places, 917 transitions, 14949 flow. Second operand 8 states and 148 transitions. [2024-06-27 23:51:53,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 936 transitions, 16815 flow [2024-06-27 23:51:59,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 936 transitions, 16612 flow, removed 95 selfloop flow, removed 1 redundant places. [2024-06-27 23:51:59,926 INFO L231 Difference]: Finished difference. Result has 490 places, 917 transitions, 14941 flow [2024-06-27 23:51:59,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=14746, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=917, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=823, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14941, PETRI_PLACES=490, PETRI_TRANSITIONS=917} [2024-06-27 23:51:59,927 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 447 predicate places. [2024-06-27 23:51:59,927 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 917 transitions, 14941 flow [2024-06-27 23:51:59,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:59,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:59,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:59,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 23:51:59,927 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:51:59,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:59,928 INFO L85 PathProgramCache]: Analyzing trace with hash 581330231, now seen corresponding path program 3 times [2024-06-27 23:51:59,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:59,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671862675] [2024-06-27 23:51:59,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:59,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:59,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:52:02,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:52:02,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:52:02,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671862675] [2024-06-27 23:52:02,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671862675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:52:02,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:52:02,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:52:02,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711796631] [2024-06-27 23:52:02,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:52:02,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:52:02,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:52:02,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:52:02,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:52:02,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:52:02,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 917 transitions, 14941 flow. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:52:02,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:52:02,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:52:02,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15