./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix010.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix010.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/mix010.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix010.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 22:05:55,493 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:05:55,571 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:05:55,576 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:05:55,576 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:05:55,598 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:05:55,598 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:05:55,599 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:05:55,599 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:05:55,602 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:05:55,603 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:05:55,603 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:05:55,604 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:05:55,605 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:05:55,605 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:05:55,605 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:05:55,605 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:05:55,606 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:05:55,606 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:05:55,606 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:05:55,606 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:05:55,607 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:05:55,607 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:05:55,607 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:05:55,607 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:05:55,607 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:05:55,608 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:05:55,608 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:05:55,609 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:05:55,609 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:05:55,610 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:05:55,610 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:05:55,610 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:05:55,610 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:05:55,610 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:05:55,610 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:05:55,611 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:05:55,611 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:05:55,611 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:05:55,611 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:05:55,611 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:05:55,612 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:05:55,612 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:05:55,612 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:05:55,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:05:55,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:05:55,863 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:05:55,864 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:05:55,864 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:05:55,865 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix010.oepc.yml/witness.yml [2024-06-27 22:05:55,975 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:05:55,978 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:05:55,980 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix010.oepc.i [2024-06-27 22:05:57,003 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:05:57,220 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:05:57,221 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix010.oepc.i [2024-06-27 22:05:57,238 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ece64cdf/8e5c776e0a4f48a3a60c0fc6c424178e/FLAG33f90cc46 [2024-06-27 22:05:57,248 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ece64cdf/8e5c776e0a4f48a3a60c0fc6c424178e [2024-06-27 22:05:57,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:05:57,250 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:05:57,251 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:05:57,251 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:05:57,255 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:05:57,255 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:05:55" (1/2) ... [2024-06-27 22:05:57,256 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78a5d4ae and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:05:57, skipping insertion in model container [2024-06-27 22:05:57,256 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:05:55" (1/2) ... [2024-06-27 22:05:57,257 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@9904ae2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:05:57, skipping insertion in model container [2024-06-27 22:05:57,258 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:05:57" (2/2) ... [2024-06-27 22:05:57,258 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78a5d4ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:05:57, skipping insertion in model container [2024-06-27 22:05:57,258 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:05:57" (2/2) ... [2024-06-27 22:05:57,258 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:05:57,282 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:05:57,284 INFO L97 edCorrectnessWitness]: Location invariant before [L853-L853] ! 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_p1_EBX) + (long long )z >= 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_p1_EBX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )a$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 22:05:57,285 INFO L97 edCorrectnessWitness]: Location invariant before [L855-L855] ! 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_p1_EBX) + (long long )z >= 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_p1_EBX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )a$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 22:05:57,285 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] ! 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_p1_EBX) + (long long )z >= 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_p1_EBX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )a$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 22:05:57,285 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:05:57,286 INFO L106 edCorrectnessWitness]: ghost_update [L851-L851] multithreaded = 1; [2024-06-27 22:05:57,333 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:05:57,487 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix010.oepc.i[945,958] [2024-06-27 22:05:57,703 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:05:57,729 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:05:57,764 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix010.oepc.i[945,958] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:05:57,916 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:05:57,962 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:05:57,962 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:05:57 WrapperNode [2024-06-27 22:05:57,962 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:05:57,964 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:05:57,964 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:05:57,964 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:05:57,969 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:05:57" (1/1) ... [2024-06-27 22:05:57,990 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:05:57" (1/1) ... [2024-06-27 22:05:58,063 INFO L138 Inliner]: procedures = 175, calls = 48, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 125 [2024-06-27 22:05:58,064 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:05:58,064 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:05:58,065 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:05:58,065 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:05:58,074 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:05:57" (1/1) ... [2024-06-27 22:05:58,075 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:05:57" (1/1) ... [2024-06-27 22:05:58,093 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:05:57" (1/1) ... [2024-06-27 22:05:58,121 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 22:05:58,121 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:05:57" (1/1) ... [2024-06-27 22:05:58,121 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:05:57" (1/1) ... [2024-06-27 22:05:58,139 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:05:57" (1/1) ... [2024-06-27 22:05:58,141 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:05:57" (1/1) ... [2024-06-27 22:05:58,148 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:05:57" (1/1) ... [2024-06-27 22:05:58,151 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:05:57" (1/1) ... [2024-06-27 22:05:58,158 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:05:58,160 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:05:58,160 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:05:58,160 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:05:58,161 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:05:57" (1/1) ... [2024-06-27 22:05:58,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:05:58,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:05:58,186 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 22:05:58,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 22:05:58,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:05:58,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:05:58,218 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:05:58,218 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:05:58,218 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:05:58,218 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:05:58,218 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 22:05:58,218 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 22:05:58,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:05:58,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:05:58,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:05:58,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:05:58,220 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 22:05:58,354 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:05:58,357 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:05:58,948 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:05:58,949 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:05:59,092 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:05:59,092 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:05:59,093 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:05:59 BoogieIcfgContainer [2024-06-27 22:05:59,093 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:05:59,095 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:05:59,095 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:05:59,097 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:05:59,097 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:05:55" (1/4) ... [2024-06-27 22:05:59,098 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cc7b523 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:05:59, skipping insertion in model container [2024-06-27 22:05:59,137 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:05:57" (2/4) ... [2024-06-27 22:05:59,138 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cc7b523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:05:59, skipping insertion in model container [2024-06-27 22:05:59,138 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:05:57" (3/4) ... [2024-06-27 22:05:59,140 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cc7b523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:05:59, skipping insertion in model container [2024-06-27 22:05:59,140 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:05:59" (4/4) ... [2024-06-27 22:05:59,141 INFO L112 eAbstractionObserver]: Analyzing ICFG mix010.oepc.i [2024-06-27 22:05:59,153 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:05:59,154 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 22:05:59,154 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:05:59,200 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:05:59,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 49 transitions, 110 flow [2024-06-27 22:05:59,257 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2024-06-27 22:05:59,258 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:05:59,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 46 events. 1/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 78 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2024-06-27 22:05:59,261 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 49 transitions, 110 flow [2024-06-27 22:05:59,265 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 46 transitions, 101 flow [2024-06-27 22:05:59,275 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:05:59,284 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;@2cd081f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:05:59,284 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 22:05:59,288 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:05:59,288 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 22:05:59,288 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:05:59,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:59,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:05:59,289 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:59,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:59,293 INFO L85 PathProgramCache]: Analyzing trace with hash 348754714, now seen corresponding path program 1 times [2024-06-27 22:05:59,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:59,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091340407] [2024-06-27 22:05:59,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:59,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:59,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:01,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:01,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:01,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091340407] [2024-06-27 22:06:01,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091340407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:01,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:01,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:06:01,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192300494] [2024-06-27 22:06:01,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:01,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:06:01,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:01,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:06:01,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:06:01,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-06-27 22:06:01,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:01,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:01,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-06-27 22:06:01,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:02,073 INFO L124 PetriNetUnfolderBase]: 3787/6292 cut-off events. [2024-06-27 22:06:02,074 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-06-27 22:06:02,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11829 conditions, 6292 events. 3787/6292 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 41975 event pairs, 3112 based on Foata normal form. 180/5917 useless extension candidates. Maximal degree in co-relation 11817. Up to 5438 conditions per place. [2024-06-27 22:06:02,106 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 41 selfloop transitions, 4 changer transitions 0/59 dead transitions. [2024-06-27 22:06:02,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 59 transitions, 223 flow [2024-06-27 22:06:02,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:06:02,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:06:02,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-06-27 22:06:02,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6938775510204082 [2024-06-27 22:06:02,117 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 101 flow. Second operand 3 states and 102 transitions. [2024-06-27 22:06:02,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 59 transitions, 223 flow [2024-06-27 22:06:02,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 59 transitions, 218 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:06:02,125 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 128 flow [2024-06-27 22:06:02,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2024-06-27 22:06:02,129 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 0 predicate places. [2024-06-27 22:06:02,129 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 128 flow [2024-06-27 22:06:02,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:02,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:02,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:02,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:06:02,130 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:02,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:02,131 INFO L85 PathProgramCache]: Analyzing trace with hash 145856984, now seen corresponding path program 1 times [2024-06-27 22:06:02,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:02,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161702680] [2024-06-27 22:06:02,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:02,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:02,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:03,437 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 22:06:03,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:03,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161702680] [2024-06-27 22:06:03,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161702680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:03,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:03,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:06:03,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669991718] [2024-06-27 22:06:03,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:03,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:06:03,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:03,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:06:03,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:06:03,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-06-27 22:06:03,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 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 22:06:03,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:03,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-06-27 22:06:03,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:04,219 INFO L124 PetriNetUnfolderBase]: 3789/6308 cut-off events. [2024-06-27 22:06:04,220 INFO L125 PetriNetUnfolderBase]: For 887/887 co-relation queries the response was YES. [2024-06-27 22:06:04,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13175 conditions, 6308 events. 3789/6308 cut-off events. For 887/887 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 42119 event pairs, 2796 based on Foata normal form. 3/5803 useless extension candidates. Maximal degree in co-relation 13163. Up to 5423 conditions per place. [2024-06-27 22:06:04,246 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 51 selfloop transitions, 8 changer transitions 1/74 dead transitions. [2024-06-27 22:06:04,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 74 transitions, 321 flow [2024-06-27 22:06:04,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:06:04,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:06:04,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2024-06-27 22:06:04,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6530612244897959 [2024-06-27 22:06:04,248 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 128 flow. Second operand 4 states and 128 transitions. [2024-06-27 22:06:04,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 74 transitions, 321 flow [2024-06-27 22:06:04,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 74 transitions, 314 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:06:04,250 INFO L231 Difference]: Finished difference. Result has 59 places, 55 transitions, 193 flow [2024-06-27 22:06:04,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=193, PETRI_PLACES=59, PETRI_TRANSITIONS=55} [2024-06-27 22:06:04,251 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 4 predicate places. [2024-06-27 22:06:04,251 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 55 transitions, 193 flow [2024-06-27 22:06:04,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 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 22:06:04,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:04,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:04,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:06:04,252 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:04,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:04,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1565330281, now seen corresponding path program 1 times [2024-06-27 22:06:04,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:04,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761519621] [2024-06-27 22:06:04,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:04,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:04,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:06,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:06,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:06,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761519621] [2024-06-27 22:06:06,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761519621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:06,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:06,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:06:06,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647871919] [2024-06-27 22:06:06,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:06,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:06:06,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:06,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:06:06,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:06:06,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-06-27 22:06:06,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 55 transitions, 193 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:06,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:06,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-06-27 22:06:06,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:07,329 INFO L124 PetriNetUnfolderBase]: 4469/6914 cut-off events. [2024-06-27 22:06:07,329 INFO L125 PetriNetUnfolderBase]: For 2892/2892 co-relation queries the response was YES. [2024-06-27 22:06:07,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16341 conditions, 6914 events. 4469/6914 cut-off events. For 2892/2892 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 43298 event pairs, 2037 based on Foata normal form. 3/6527 useless extension candidates. Maximal degree in co-relation 16326. Up to 6318 conditions per place. [2024-06-27 22:06:07,369 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 72 selfloop transitions, 21 changer transitions 3/109 dead transitions. [2024-06-27 22:06:07,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 109 transitions, 551 flow [2024-06-27 22:06:07,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:06:07,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:06:07,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2024-06-27 22:06:07,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6360544217687075 [2024-06-27 22:06:07,375 INFO L175 Difference]: Start difference. First operand has 59 places, 55 transitions, 193 flow. Second operand 6 states and 187 transitions. [2024-06-27 22:06:07,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 109 transitions, 551 flow [2024-06-27 22:06:07,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 109 transitions, 534 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-27 22:06:07,380 INFO L231 Difference]: Finished difference. Result has 66 places, 66 transitions, 311 flow [2024-06-27 22:06:07,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=311, PETRI_PLACES=66, PETRI_TRANSITIONS=66} [2024-06-27 22:06:07,381 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 11 predicate places. [2024-06-27 22:06:07,381 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 66 transitions, 311 flow [2024-06-27 22:06:07,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:07,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:07,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:07,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:06:07,382 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:07,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:07,382 INFO L85 PathProgramCache]: Analyzing trace with hash 2138344520, now seen corresponding path program 1 times [2024-06-27 22:06:07,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:07,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749353765] [2024-06-27 22:06:07,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:07,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:07,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:07,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:07,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:07,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749353765] [2024-06-27 22:06:07,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749353765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:07,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:07,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:06:07,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921080343] [2024-06-27 22:06:07,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:07,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:06:07,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:07,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:06:07,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:06:07,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 49 [2024-06-27 22:06:07,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 66 transitions, 311 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:07,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:07,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 49 [2024-06-27 22:06:07,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:07,789 INFO L124 PetriNetUnfolderBase]: 1336/2831 cut-off events. [2024-06-27 22:06:07,789 INFO L125 PetriNetUnfolderBase]: For 1305/1385 co-relation queries the response was YES. [2024-06-27 22:06:07,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6106 conditions, 2831 events. 1336/2831 cut-off events. For 1305/1385 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 21738 event pairs, 771 based on Foata normal form. 8/2576 useless extension candidates. Maximal degree in co-relation 6087. Up to 1746 conditions per place. [2024-06-27 22:06:07,807 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 38 selfloop transitions, 4 changer transitions 0/81 dead transitions. [2024-06-27 22:06:07,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 81 transitions, 429 flow [2024-06-27 22:06:07,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:06:07,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:06:07,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2024-06-27 22:06:07,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7891156462585034 [2024-06-27 22:06:07,809 INFO L175 Difference]: Start difference. First operand has 66 places, 66 transitions, 311 flow. Second operand 3 states and 116 transitions. [2024-06-27 22:06:07,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 81 transitions, 429 flow [2024-06-27 22:06:07,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 81 transitions, 406 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-27 22:06:07,815 INFO L231 Difference]: Finished difference. Result has 66 places, 65 transitions, 292 flow [2024-06-27 22:06:07,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=66, PETRI_TRANSITIONS=65} [2024-06-27 22:06:07,816 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 11 predicate places. [2024-06-27 22:06:07,817 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 65 transitions, 292 flow [2024-06-27 22:06:07,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:07,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:07,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:07,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:06:07,817 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:07,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:07,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1280597492, now seen corresponding path program 1 times [2024-06-27 22:06:07,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:07,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627464824] [2024-06-27 22:06:07,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:07,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:07,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:10,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:10,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:10,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627464824] [2024-06-27 22:06:10,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627464824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:10,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:10,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:10,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254753256] [2024-06-27 22:06:10,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:10,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:10,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:10,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:10,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:10,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-06-27 22:06:10,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 65 transitions, 292 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:10,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:10,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-06-27 22:06:10,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:11,364 INFO L124 PetriNetUnfolderBase]: 3808/6300 cut-off events. [2024-06-27 22:06:11,364 INFO L125 PetriNetUnfolderBase]: For 6094/6094 co-relation queries the response was YES. [2024-06-27 22:06:11,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16109 conditions, 6300 events. 3808/6300 cut-off events. For 6094/6094 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 40807 event pairs, 1854 based on Foata normal form. 6/6065 useless extension candidates. Maximal degree in co-relation 16089. Up to 5340 conditions per place. [2024-06-27 22:06:11,391 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 76 selfloop transitions, 23 changer transitions 6/118 dead transitions. [2024-06-27 22:06:11,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 118 transitions, 640 flow [2024-06-27 22:06:11,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:06:11,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:06:11,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 212 transitions. [2024-06-27 22:06:11,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6180758017492711 [2024-06-27 22:06:11,393 INFO L175 Difference]: Start difference. First operand has 66 places, 65 transitions, 292 flow. Second operand 7 states and 212 transitions. [2024-06-27 22:06:11,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 118 transitions, 640 flow [2024-06-27 22:06:11,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 118 transitions, 632 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 22:06:11,402 INFO L231 Difference]: Finished difference. Result has 70 places, 65 transitions, 347 flow [2024-06-27 22:06:11,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=347, PETRI_PLACES=70, PETRI_TRANSITIONS=65} [2024-06-27 22:06:11,403 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 15 predicate places. [2024-06-27 22:06:11,407 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 65 transitions, 347 flow [2024-06-27 22:06:11,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:11,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:11,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:11,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:06:11,408 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:11,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:11,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1661914531, now seen corresponding path program 1 times [2024-06-27 22:06:11,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:11,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461220483] [2024-06-27 22:06:11,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:11,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:13,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:13,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:13,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461220483] [2024-06-27 22:06:13,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461220483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:13,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:13,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:06:13,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096246659] [2024-06-27 22:06:13,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:13,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:06:13,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:13,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:06:13,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:06:13,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 22:06:13,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 65 transitions, 347 flow. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 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 22:06:13,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:13,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 22:06:13,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:14,350 INFO L124 PetriNetUnfolderBase]: 3797/6367 cut-off events. [2024-06-27 22:06:14,351 INFO L125 PetriNetUnfolderBase]: For 7957/7957 co-relation queries the response was YES. [2024-06-27 22:06:14,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16696 conditions, 6367 events. 3797/6367 cut-off events. For 7957/7957 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 41674 event pairs, 1711 based on Foata normal form. 2/6145 useless extension candidates. Maximal degree in co-relation 16674. Up to 5439 conditions per place. [2024-06-27 22:06:14,385 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 62 selfloop transitions, 12 changer transitions 0/85 dead transitions. [2024-06-27 22:06:14,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 85 transitions, 563 flow [2024-06-27 22:06:14,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:06:14,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:06:14,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-06-27 22:06:14,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5183673469387755 [2024-06-27 22:06:14,387 INFO L175 Difference]: Start difference. First operand has 70 places, 65 transitions, 347 flow. Second operand 5 states and 127 transitions. [2024-06-27 22:06:14,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 85 transitions, 563 flow [2024-06-27 22:06:14,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 85 transitions, 506 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 22:06:14,392 INFO L231 Difference]: Finished difference. Result has 70 places, 71 transitions, 370 flow [2024-06-27 22:06:14,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=370, PETRI_PLACES=70, PETRI_TRANSITIONS=71} [2024-06-27 22:06:14,394 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 15 predicate places. [2024-06-27 22:06:14,394 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 71 transitions, 370 flow [2024-06-27 22:06:14,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 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 22:06:14,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:14,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:14,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:06:14,395 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:14,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:14,396 INFO L85 PathProgramCache]: Analyzing trace with hash -2978202, now seen corresponding path program 1 times [2024-06-27 22:06:14,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:14,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813742985] [2024-06-27 22:06:14,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:14,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:14,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:16,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:16,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:16,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813742985] [2024-06-27 22:06:16,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813742985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:16,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:16,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:06:16,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274304482] [2024-06-27 22:06:16,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:16,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:06:16,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:16,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:06:16,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:06:16,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:06:16,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 71 transitions, 370 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 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 22:06:16,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:16,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:06:16,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:17,935 INFO L124 PetriNetUnfolderBase]: 4472/7475 cut-off events. [2024-06-27 22:06:17,935 INFO L125 PetriNetUnfolderBase]: For 11797/11797 co-relation queries the response was YES. [2024-06-27 22:06:17,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20538 conditions, 7475 events. 4472/7475 cut-off events. For 11797/11797 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 49312 event pairs, 2039 based on Foata normal form. 2/7265 useless extension candidates. Maximal degree in co-relation 20513. Up to 6375 conditions per place. [2024-06-27 22:06:17,966 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 69 selfloop transitions, 16 changer transitions 0/95 dead transitions. [2024-06-27 22:06:17,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 95 transitions, 614 flow [2024-06-27 22:06:17,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:06:17,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:06:17,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-27 22:06:17,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965986394557823 [2024-06-27 22:06:17,969 INFO L175 Difference]: Start difference. First operand has 70 places, 71 transitions, 370 flow. Second operand 6 states and 146 transitions. [2024-06-27 22:06:17,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 95 transitions, 614 flow [2024-06-27 22:06:17,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 95 transitions, 587 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-27 22:06:17,975 INFO L231 Difference]: Finished difference. Result has 74 places, 75 transitions, 420 flow [2024-06-27 22:06:17,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=420, PETRI_PLACES=74, PETRI_TRANSITIONS=75} [2024-06-27 22:06:17,976 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 19 predicate places. [2024-06-27 22:06:17,976 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 75 transitions, 420 flow [2024-06-27 22:06:17,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 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 22:06:17,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:17,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:17,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:06:17,977 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:17,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:17,977 INFO L85 PathProgramCache]: Analyzing trace with hash -98967921, now seen corresponding path program 1 times [2024-06-27 22:06:17,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:17,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600952414] [2024-06-27 22:06:17,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:17,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:18,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:19,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:19,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:19,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600952414] [2024-06-27 22:06:19,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600952414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:19,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:19,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:06:19,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202430505] [2024-06-27 22:06:19,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:19,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:06:19,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:19,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:06:19,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:06:19,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 22:06:19,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 75 transitions, 420 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:19,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:19,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 22:06:19,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:20,674 INFO L124 PetriNetUnfolderBase]: 4308/7298 cut-off events. [2024-06-27 22:06:20,675 INFO L125 PetriNetUnfolderBase]: For 16266/16270 co-relation queries the response was YES. [2024-06-27 22:06:20,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21505 conditions, 7298 events. 4308/7298 cut-off events. For 16266/16270 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 48369 event pairs, 1641 based on Foata normal form. 6/7056 useless extension candidates. Maximal degree in co-relation 21477. Up to 6105 conditions per place. [2024-06-27 22:06:20,714 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 79 selfloop transitions, 20 changer transitions 0/111 dead transitions. [2024-06-27 22:06:20,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 111 transitions, 782 flow [2024-06-27 22:06:20,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:06:20,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:06:20,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-27 22:06:20,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5014577259475219 [2024-06-27 22:06:20,717 INFO L175 Difference]: Start difference. First operand has 74 places, 75 transitions, 420 flow. Second operand 7 states and 172 transitions. [2024-06-27 22:06:20,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 111 transitions, 782 flow [2024-06-27 22:06:20,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 111 transitions, 745 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-27 22:06:20,724 INFO L231 Difference]: Finished difference. Result has 78 places, 84 transitions, 515 flow [2024-06-27 22:06:20,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=515, PETRI_PLACES=78, PETRI_TRANSITIONS=84} [2024-06-27 22:06:20,726 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 23 predicate places. [2024-06-27 22:06:20,726 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 84 transitions, 515 flow [2024-06-27 22:06:20,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:20,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:20,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:20,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:06:20,727 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:20,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:20,727 INFO L85 PathProgramCache]: Analyzing trace with hash 652145649, now seen corresponding path program 2 times [2024-06-27 22:06:20,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:20,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248853428] [2024-06-27 22:06:20,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:20,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:20,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:22,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:22,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:22,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248853428] [2024-06-27 22:06:22,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248853428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:22,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:22,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:06:22,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737906345] [2024-06-27 22:06:22,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:22,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:06:22,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:22,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:06:22,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:06:22,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 22:06:22,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 84 transitions, 515 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:22,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:22,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 22:06:22,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:23,332 INFO L124 PetriNetUnfolderBase]: 4317/7355 cut-off events. [2024-06-27 22:06:23,332 INFO L125 PetriNetUnfolderBase]: For 20165/20165 co-relation queries the response was YES. [2024-06-27 22:06:23,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22750 conditions, 7355 events. 4317/7355 cut-off events. For 20165/20165 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 49568 event pairs, 1866 based on Foata normal form. 2/7143 useless extension candidates. Maximal degree in co-relation 22720. Up to 6133 conditions per place. [2024-06-27 22:06:23,370 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 79 selfloop transitions, 15 changer transitions 0/106 dead transitions. [2024-06-27 22:06:23,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 106 transitions, 761 flow [2024-06-27 22:06:23,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:06:23,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:06:23,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-27 22:06:23,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170068027210885 [2024-06-27 22:06:23,373 INFO L175 Difference]: Start difference. First operand has 78 places, 84 transitions, 515 flow. Second operand 6 states and 152 transitions. [2024-06-27 22:06:23,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 106 transitions, 761 flow [2024-06-27 22:06:23,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 106 transitions, 734 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 22:06:23,382 INFO L231 Difference]: Finished difference. Result has 81 places, 84 transitions, 526 flow [2024-06-27 22:06:23,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=526, PETRI_PLACES=81, PETRI_TRANSITIONS=84} [2024-06-27 22:06:23,383 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 26 predicate places. [2024-06-27 22:06:23,383 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 84 transitions, 526 flow [2024-06-27 22:06:23,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:23,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:23,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:23,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:06:23,384 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:23,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:23,385 INFO L85 PathProgramCache]: Analyzing trace with hash -2069608539, now seen corresponding path program 3 times [2024-06-27 22:06:23,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:23,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90748779] [2024-06-27 22:06:23,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:23,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:23,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:25,089 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 22:06:25,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:25,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90748779] [2024-06-27 22:06:25,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90748779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:25,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:25,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:06:25,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410797422] [2024-06-27 22:06:25,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:25,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:06:25,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:25,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:06:25,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:06:25,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 22:06:25,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 84 transitions, 526 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:25,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:25,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 22:06:25,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:26,336 INFO L124 PetriNetUnfolderBase]: 4368/7430 cut-off events. [2024-06-27 22:06:26,337 INFO L125 PetriNetUnfolderBase]: For 22444/22448 co-relation queries the response was YES. [2024-06-27 22:06:26,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23436 conditions, 7430 events. 4368/7430 cut-off events. For 22444/22448 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 49920 event pairs, 1856 based on Foata normal form. 6/7222 useless extension candidates. Maximal degree in co-relation 23404. Up to 6131 conditions per place. [2024-06-27 22:06:26,379 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 91 selfloop transitions, 42 changer transitions 0/145 dead transitions. [2024-06-27 22:06:26,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 145 transitions, 1149 flow [2024-06-27 22:06:26,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:06:26,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:06:26,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 167 transitions. [2024-06-27 22:06:26,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5680272108843537 [2024-06-27 22:06:26,381 INFO L175 Difference]: Start difference. First operand has 81 places, 84 transitions, 526 flow. Second operand 6 states and 167 transitions. [2024-06-27 22:06:26,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 145 transitions, 1149 flow [2024-06-27 22:06:26,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 145 transitions, 1099 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 22:06:26,392 INFO L231 Difference]: Finished difference. Result has 85 places, 117 transitions, 921 flow [2024-06-27 22:06:26,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=921, PETRI_PLACES=85, PETRI_TRANSITIONS=117} [2024-06-27 22:06:26,393 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 30 predicate places. [2024-06-27 22:06:26,393 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 117 transitions, 921 flow [2024-06-27 22:06:26,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:26,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:26,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:26,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:06:26,394 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:26,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:26,394 INFO L85 PathProgramCache]: Analyzing trace with hash 652154546, now seen corresponding path program 1 times [2024-06-27 22:06:26,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:26,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528997281] [2024-06-27 22:06:26,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:26,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:26,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:28,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:28,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:28,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528997281] [2024-06-27 22:06:28,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528997281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:28,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:28,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:28,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738096682] [2024-06-27 22:06:28,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:28,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:28,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:28,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:28,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:28,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:06:28,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 117 transitions, 921 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:28,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:28,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:06:28,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:30,414 INFO L124 PetriNetUnfolderBase]: 4588/7677 cut-off events. [2024-06-27 22:06:30,415 INFO L125 PetriNetUnfolderBase]: For 28526/28526 co-relation queries the response was YES. [2024-06-27 22:06:30,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26092 conditions, 7677 events. 4588/7677 cut-off events. For 28526/28526 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 50471 event pairs, 1961 based on Foata normal form. 2/7465 useless extension candidates. Maximal degree in co-relation 26058. Up to 6522 conditions per place. [2024-06-27 22:06:30,466 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 117 selfloop transitions, 20 changer transitions 0/147 dead transitions. [2024-06-27 22:06:30,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 147 transitions, 1311 flow [2024-06-27 22:06:30,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:06:30,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:06:30,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-27 22:06:30,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49271137026239065 [2024-06-27 22:06:30,469 INFO L175 Difference]: Start difference. First operand has 85 places, 117 transitions, 921 flow. Second operand 7 states and 169 transitions. [2024-06-27 22:06:30,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 147 transitions, 1311 flow [2024-06-27 22:06:30,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 147 transitions, 1236 flow, removed 33 selfloop flow, removed 1 redundant places. [2024-06-27 22:06:30,491 INFO L231 Difference]: Finished difference. Result has 91 places, 121 transitions, 943 flow [2024-06-27 22:06:30,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=943, PETRI_PLACES=91, PETRI_TRANSITIONS=121} [2024-06-27 22:06:30,492 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 36 predicate places. [2024-06-27 22:06:30,492 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 121 transitions, 943 flow [2024-06-27 22:06:30,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:30,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:30,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:30,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:06:30,493 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:30,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:30,493 INFO L85 PathProgramCache]: Analyzing trace with hash -282815988, now seen corresponding path program 1 times [2024-06-27 22:06:30,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:30,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018497698] [2024-06-27 22:06:30,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:30,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:30,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:32,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:32,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:32,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018497698] [2024-06-27 22:06:32,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018497698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:32,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:32,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:32,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465092865] [2024-06-27 22:06:32,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:32,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:32,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:32,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:32,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:32,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 22:06:32,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 121 transitions, 943 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:32,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:32,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 22:06:32,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:33,528 INFO L124 PetriNetUnfolderBase]: 4390/7124 cut-off events. [2024-06-27 22:06:33,528 INFO L125 PetriNetUnfolderBase]: For 34364/34364 co-relation queries the response was YES. [2024-06-27 22:06:33,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26433 conditions, 7124 events. 4390/7124 cut-off events. For 34364/34364 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 45126 event pairs, 1634 based on Foata normal form. 2/7016 useless extension candidates. Maximal degree in co-relation 26395. Up to 6216 conditions per place. [2024-06-27 22:06:33,571 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 125 selfloop transitions, 24 changer transitions 0/161 dead transitions. [2024-06-27 22:06:33,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 161 transitions, 1438 flow [2024-06-27 22:06:33,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:06:33,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:06:33,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-27 22:06:33,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5160349854227405 [2024-06-27 22:06:33,574 INFO L175 Difference]: Start difference. First operand has 91 places, 121 transitions, 943 flow. Second operand 7 states and 177 transitions. [2024-06-27 22:06:33,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 161 transitions, 1438 flow [2024-06-27 22:06:33,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 161 transitions, 1371 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-27 22:06:33,594 INFO L231 Difference]: Finished difference. Result has 95 places, 132 transitions, 1071 flow [2024-06-27 22:06:33,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=876, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1071, PETRI_PLACES=95, PETRI_TRANSITIONS=132} [2024-06-27 22:06:33,595 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 40 predicate places. [2024-06-27 22:06:33,595 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 132 transitions, 1071 flow [2024-06-27 22:06:33,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:33,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:33,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:33,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:06:33,596 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:33,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:33,596 INFO L85 PathProgramCache]: Analyzing trace with hash -282695832, now seen corresponding path program 1 times [2024-06-27 22:06:33,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:33,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632249237] [2024-06-27 22:06:33,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:33,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:33,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:35,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:35,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:35,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632249237] [2024-06-27 22:06:35,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632249237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:35,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:35,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:35,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510747789] [2024-06-27 22:06:35,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:35,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:35,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:35,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:35,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:35,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:06:35,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 132 transitions, 1071 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:35,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:35,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:06:35,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:36,561 INFO L124 PetriNetUnfolderBase]: 4676/7438 cut-off events. [2024-06-27 22:06:36,562 INFO L125 PetriNetUnfolderBase]: For 42420/42424 co-relation queries the response was YES. [2024-06-27 22:06:36,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29051 conditions, 7438 events. 4676/7438 cut-off events. For 42420/42424 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 45861 event pairs, 1761 based on Foata normal form. 3/7330 useless extension candidates. Maximal degree in co-relation 29010. Up to 6526 conditions per place. [2024-06-27 22:06:36,604 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 120 selfloop transitions, 47 changer transitions 0/177 dead transitions. [2024-06-27 22:06:36,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 177 transitions, 1671 flow [2024-06-27 22:06:36,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:06:36,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:06:36,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-27 22:06:36,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.521865889212828 [2024-06-27 22:06:36,606 INFO L175 Difference]: Start difference. First operand has 95 places, 132 transitions, 1071 flow. Second operand 7 states and 179 transitions. [2024-06-27 22:06:36,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 177 transitions, 1671 flow [2024-06-27 22:06:36,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 177 transitions, 1613 flow, removed 24 selfloop flow, removed 2 redundant places. [2024-06-27 22:06:36,631 INFO L231 Difference]: Finished difference. Result has 100 places, 138 transitions, 1192 flow [2024-06-27 22:06:36,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1013, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1192, PETRI_PLACES=100, PETRI_TRANSITIONS=138} [2024-06-27 22:06:36,632 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 45 predicate places. [2024-06-27 22:06:36,632 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 138 transitions, 1192 flow [2024-06-27 22:06:36,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:36,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:36,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:36,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:06:36,633 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:36,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:36,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1226963246, now seen corresponding path program 2 times [2024-06-27 22:06:36,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:36,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010343283] [2024-06-27 22:06:36,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:36,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:36,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:38,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:38,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:38,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010343283] [2024-06-27 22:06:38,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010343283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:38,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:38,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:38,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83189071] [2024-06-27 22:06:38,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:38,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:38,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:38,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:38,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:38,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 22:06:38,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 138 transitions, 1192 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:38,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:38,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 22:06:38,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:39,474 INFO L124 PetriNetUnfolderBase]: 4515/7686 cut-off events. [2024-06-27 22:06:39,474 INFO L125 PetriNetUnfolderBase]: For 50128/50130 co-relation queries the response was YES. [2024-06-27 22:06:39,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30273 conditions, 7686 events. 4515/7686 cut-off events. For 50128/50130 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 51650 event pairs, 1774 based on Foata normal form. 4/7472 useless extension candidates. Maximal degree in co-relation 30230. Up to 6239 conditions per place. [2024-06-27 22:06:39,522 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 123 selfloop transitions, 53 changer transitions 0/190 dead transitions. [2024-06-27 22:06:39,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 190 transitions, 1904 flow [2024-06-27 22:06:39,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:06:39,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:06:39,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 185 transitions. [2024-06-27 22:06:39,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5393586005830904 [2024-06-27 22:06:39,524 INFO L175 Difference]: Start difference. First operand has 100 places, 138 transitions, 1192 flow. Second operand 7 states and 185 transitions. [2024-06-27 22:06:39,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 190 transitions, 1904 flow [2024-06-27 22:06:39,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 190 transitions, 1853 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-27 22:06:39,552 INFO L231 Difference]: Finished difference. Result has 105 places, 150 transitions, 1447 flow [2024-06-27 22:06:39,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1141, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1447, PETRI_PLACES=105, PETRI_TRANSITIONS=150} [2024-06-27 22:06:39,553 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 50 predicate places. [2024-06-27 22:06:39,553 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 150 transitions, 1447 flow [2024-06-27 22:06:39,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:39,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:39,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:39,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:06:39,554 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:39,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:39,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1258053694, now seen corresponding path program 2 times [2024-06-27 22:06:39,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:39,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781808665] [2024-06-27 22:06:39,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:39,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:39,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:41,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:41,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:41,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781808665] [2024-06-27 22:06:41,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781808665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:41,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:41,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:41,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146423544] [2024-06-27 22:06:41,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:41,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:41,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:41,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:41,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:41,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:06:41,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 150 transitions, 1447 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:41,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:41,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:06:41,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:42,425 INFO L124 PetriNetUnfolderBase]: 4760/7941 cut-off events. [2024-06-27 22:06:42,426 INFO L125 PetriNetUnfolderBase]: For 58739/58739 co-relation queries the response was YES. [2024-06-27 22:06:42,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32812 conditions, 7941 events. 4760/7941 cut-off events. For 58739/58739 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 52090 event pairs, 1887 based on Foata normal form. 2/7724 useless extension candidates. Maximal degree in co-relation 32766. Up to 6760 conditions per place. [2024-06-27 22:06:42,470 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 152 selfloop transitions, 19 changer transitions 0/181 dead transitions. [2024-06-27 22:06:42,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 181 transitions, 1923 flow [2024-06-27 22:06:42,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:06:42,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:06:42,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-27 22:06:42,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4956268221574344 [2024-06-27 22:06:42,472 INFO L175 Difference]: Start difference. First operand has 105 places, 150 transitions, 1447 flow. Second operand 7 states and 170 transitions. [2024-06-27 22:06:42,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 181 transitions, 1923 flow [2024-06-27 22:06:42,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 181 transitions, 1856 flow, removed 27 selfloop flow, removed 2 redundant places. [2024-06-27 22:06:42,510 INFO L231 Difference]: Finished difference. Result has 110 places, 153 transitions, 1472 flow [2024-06-27 22:06:42,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1380, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1472, PETRI_PLACES=110, PETRI_TRANSITIONS=153} [2024-06-27 22:06:42,511 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 55 predicate places. [2024-06-27 22:06:42,511 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 153 transitions, 1472 flow [2024-06-27 22:06:42,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:42,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:42,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:42,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:06:42,512 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:42,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:42,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1432694126, now seen corresponding path program 3 times [2024-06-27 22:06:42,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:42,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66248578] [2024-06-27 22:06:42,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:42,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:42,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:44,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:44,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:44,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66248578] [2024-06-27 22:06:44,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66248578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:44,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:44,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:44,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333327204] [2024-06-27 22:06:44,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:44,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:44,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:44,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:44,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:44,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 22:06:44,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 153 transitions, 1472 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:44,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:44,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 22:06:44,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:45,362 INFO L124 PetriNetUnfolderBase]: 4533/7712 cut-off events. [2024-06-27 22:06:45,362 INFO L125 PetriNetUnfolderBase]: For 61524/61524 co-relation queries the response was YES. [2024-06-27 22:06:45,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32028 conditions, 7712 events. 4533/7712 cut-off events. For 61524/61524 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 51854 event pairs, 1771 based on Foata normal form. 2/7495 useless extension candidates. Maximal degree in co-relation 31980. Up to 6379 conditions per place. [2024-06-27 22:06:45,423 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 146 selfloop transitions, 24 changer transitions 0/185 dead transitions. [2024-06-27 22:06:45,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 185 transitions, 1930 flow [2024-06-27 22:06:45,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:06:45,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:06:45,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-27 22:06:45,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5160349854227405 [2024-06-27 22:06:45,425 INFO L175 Difference]: Start difference. First operand has 110 places, 153 transitions, 1472 flow. Second operand 7 states and 177 transitions. [2024-06-27 22:06:45,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 185 transitions, 1930 flow [2024-06-27 22:06:45,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 185 transitions, 1862 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-27 22:06:45,479 INFO L231 Difference]: Finished difference. Result has 112 places, 153 transitions, 1462 flow [2024-06-27 22:06:45,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1404, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1462, PETRI_PLACES=112, PETRI_TRANSITIONS=153} [2024-06-27 22:06:45,479 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 57 predicate places. [2024-06-27 22:06:45,480 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 153 transitions, 1462 flow [2024-06-27 22:06:45,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:45,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:45,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:45,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:06:45,480 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:45,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:45,481 INFO L85 PathProgramCache]: Analyzing trace with hash 442292178, now seen corresponding path program 3 times [2024-06-27 22:06:45,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:45,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318117274] [2024-06-27 22:06:45,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:45,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:45,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:46,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:46,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:46,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318117274] [2024-06-27 22:06:46,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318117274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:46,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:46,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:46,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674075927] [2024-06-27 22:06:46,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:46,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:46,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:46,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:46,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:46,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:06:46,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 153 transitions, 1462 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:46,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:46,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:06:46,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:48,234 INFO L124 PetriNetUnfolderBase]: 4750/7927 cut-off events. [2024-06-27 22:06:48,234 INFO L125 PetriNetUnfolderBase]: For 64837/64837 co-relation queries the response was YES. [2024-06-27 22:06:48,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33138 conditions, 7927 events. 4750/7927 cut-off events. For 64837/64837 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 51971 event pairs, 1887 based on Foata normal form. 2/7710 useless extension candidates. Maximal degree in co-relation 33089. Up to 6704 conditions per place. [2024-06-27 22:06:48,279 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 147 selfloop transitions, 30 changer transitions 0/187 dead transitions. [2024-06-27 22:06:48,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 187 transitions, 1952 flow [2024-06-27 22:06:48,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:06:48,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:06:48,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-27 22:06:48,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5043731778425656 [2024-06-27 22:06:48,281 INFO L175 Difference]: Start difference. First operand has 112 places, 153 transitions, 1462 flow. Second operand 7 states and 173 transitions. [2024-06-27 22:06:48,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 187 transitions, 1952 flow [2024-06-27 22:06:48,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 187 transitions, 1886 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 22:06:48,334 INFO L231 Difference]: Finished difference. Result has 114 places, 153 transitions, 1466 flow [2024-06-27 22:06:48,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1396, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1466, PETRI_PLACES=114, PETRI_TRANSITIONS=153} [2024-06-27 22:06:48,334 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 59 predicate places. [2024-06-27 22:06:48,334 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 153 transitions, 1466 flow [2024-06-27 22:06:48,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:48,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:48,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:48,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:06:48,335 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:48,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:48,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1416922816, now seen corresponding path program 4 times [2024-06-27 22:06:48,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:48,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995665177] [2024-06-27 22:06:48,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:48,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:48,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:49,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:49,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:49,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995665177] [2024-06-27 22:06:49,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995665177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:49,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:49,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:49,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911328179] [2024-06-27 22:06:49,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:49,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:49,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:49,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:49,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:50,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 22:06:50,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 153 transitions, 1466 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:50,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:50,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 22:06:50,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:51,482 INFO L124 PetriNetUnfolderBase]: 4650/7873 cut-off events. [2024-06-27 22:06:51,482 INFO L125 PetriNetUnfolderBase]: For 70067/70075 co-relation queries the response was YES. [2024-06-27 22:06:51,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33494 conditions, 7873 events. 4650/7873 cut-off events. For 70067/70075 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 52615 event pairs, 1750 based on Foata normal form. 6/7660 useless extension candidates. Maximal degree in co-relation 33444. Up to 6454 conditions per place. [2024-06-27 22:06:51,543 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 160 selfloop transitions, 64 changer transitions 0/239 dead transitions. [2024-06-27 22:06:51,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 239 transitions, 2551 flow [2024-06-27 22:06:51,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:06:51,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:06:51,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 240 transitions. [2024-06-27 22:06:51,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54421768707483 [2024-06-27 22:06:51,554 INFO L175 Difference]: Start difference. First operand has 114 places, 153 transitions, 1466 flow. Second operand 9 states and 240 transitions. [2024-06-27 22:06:51,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 239 transitions, 2551 flow [2024-06-27 22:06:51,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 239 transitions, 2457 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 22:06:51,619 INFO L231 Difference]: Finished difference. Result has 120 places, 191 transitions, 1979 flow [2024-06-27 22:06:51,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1372, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1979, PETRI_PLACES=120, PETRI_TRANSITIONS=191} [2024-06-27 22:06:51,619 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 65 predicate places. [2024-06-27 22:06:51,619 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 191 transitions, 1979 flow [2024-06-27 22:06:51,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:51,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:51,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:51,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:06:51,620 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:51,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:51,620 INFO L85 PathProgramCache]: Analyzing trace with hash 257985844, now seen corresponding path program 5 times [2024-06-27 22:06:51,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:51,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54383099] [2024-06-27 22:06:51,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:51,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:51,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:53,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:53,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:53,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54383099] [2024-06-27 22:06:53,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54383099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:53,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:53,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:53,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408361313] [2024-06-27 22:06:53,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:53,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:53,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:53,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:53,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:53,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 22:06:53,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 191 transitions, 1979 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:53,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:53,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 22:06:53,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:55,348 INFO L124 PetriNetUnfolderBase]: 4715/7965 cut-off events. [2024-06-27 22:06:55,348 INFO L125 PetriNetUnfolderBase]: For 82706/82714 co-relation queries the response was YES. [2024-06-27 22:06:55,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36294 conditions, 7965 events. 4715/7965 cut-off events. For 82706/82714 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 53035 event pairs, 1752 based on Foata normal form. 7/7753 useless extension candidates. Maximal degree in co-relation 36241. Up to 6554 conditions per place. [2024-06-27 22:06:55,409 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 166 selfloop transitions, 77 changer transitions 0/258 dead transitions. [2024-06-27 22:06:55,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 258 transitions, 2985 flow [2024-06-27 22:06:55,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:06:55,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:06:55,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-27 22:06:55,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5229591836734694 [2024-06-27 22:06:55,412 INFO L175 Difference]: Start difference. First operand has 120 places, 191 transitions, 1979 flow. Second operand 8 states and 205 transitions. [2024-06-27 22:06:55,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 258 transitions, 2985 flow [2024-06-27 22:06:55,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 258 transitions, 2767 flow, removed 106 selfloop flow, removed 1 redundant places. [2024-06-27 22:06:55,490 INFO L231 Difference]: Finished difference. Result has 128 places, 224 transitions, 2395 flow [2024-06-27 22:06:55,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1819, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2395, PETRI_PLACES=128, PETRI_TRANSITIONS=224} [2024-06-27 22:06:55,490 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 73 predicate places. [2024-06-27 22:06:55,491 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 224 transitions, 2395 flow [2024-06-27 22:06:55,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:55,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:55,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:55,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:06:55,491 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:55,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:55,492 INFO L85 PathProgramCache]: Analyzing trace with hash 257990680, now seen corresponding path program 4 times [2024-06-27 22:06:55,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:55,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415627334] [2024-06-27 22:06:55,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:55,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:55,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:57,456 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 22:06:57,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:57,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415627334] [2024-06-27 22:06:57,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415627334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:57,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:57,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:57,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236395569] [2024-06-27 22:06:57,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:57,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:57,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:57,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:57,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:57,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:06:57,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 224 transitions, 2395 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:57,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:57,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:06:57,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:59,267 INFO L124 PetriNetUnfolderBase]: 4986/8265 cut-off events. [2024-06-27 22:06:59,267 INFO L125 PetriNetUnfolderBase]: For 85477/85487 co-relation queries the response was YES. [2024-06-27 22:06:59,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37764 conditions, 8265 events. 4986/8265 cut-off events. For 85477/85487 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 53813 event pairs, 1889 based on Foata normal form. 6/8052 useless extension candidates. Maximal degree in co-relation 37707. Up to 6914 conditions per place. [2024-06-27 22:06:59,327 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 200 selfloop transitions, 76 changer transitions 0/286 dead transitions. [2024-06-27 22:06:59,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 286 transitions, 3340 flow [2024-06-27 22:06:59,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:06:59,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:06:59,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-27 22:06:59,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5127551020408163 [2024-06-27 22:06:59,329 INFO L175 Difference]: Start difference. First operand has 128 places, 224 transitions, 2395 flow. Second operand 8 states and 201 transitions. [2024-06-27 22:06:59,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 286 transitions, 3340 flow [2024-06-27 22:06:59,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 286 transitions, 3268 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-27 22:06:59,414 INFO L231 Difference]: Finished difference. Result has 134 places, 253 transitions, 2811 flow [2024-06-27 22:06:59,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2323, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2811, PETRI_PLACES=134, PETRI_TRANSITIONS=253} [2024-06-27 22:06:59,415 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 79 predicate places. [2024-06-27 22:06:59,415 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 253 transitions, 2811 flow [2024-06-27 22:06:59,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:59,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:59,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:59,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:06:59,415 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:59,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:59,416 INFO L85 PathProgramCache]: Analyzing trace with hash 234753514, now seen corresponding path program 6 times [2024-06-27 22:06:59,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:59,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328916922] [2024-06-27 22:06:59,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:59,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:59,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:01,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:01,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:01,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328916922] [2024-06-27 22:07:01,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328916922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:01,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:01,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:07:01,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315708351] [2024-06-27 22:07:01,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:01,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:07:01,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:01,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:07:01,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:07:01,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 22:07:01,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 253 transitions, 2811 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:01,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:01,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 22:07:01,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:03,317 INFO L124 PetriNetUnfolderBase]: 4799/8093 cut-off events. [2024-06-27 22:07:03,317 INFO L125 PetriNetUnfolderBase]: For 96760/96762 co-relation queries the response was YES. [2024-06-27 22:07:03,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38640 conditions, 8093 events. 4799/8093 cut-off events. For 96760/96762 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 53800 event pairs, 1761 based on Foata normal form. 4/7876 useless extension candidates. Maximal degree in co-relation 38581. Up to 6483 conditions per place. [2024-06-27 22:07:03,383 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 152 selfloop transitions, 136 changer transitions 0/311 dead transitions. [2024-06-27 22:07:03,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 311 transitions, 3794 flow [2024-06-27 22:07:03,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:07:03,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:07:03,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-27 22:07:03,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-06-27 22:07:03,385 INFO L175 Difference]: Start difference. First operand has 134 places, 253 transitions, 2811 flow. Second operand 8 states and 208 transitions. [2024-06-27 22:07:03,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 311 transitions, 3794 flow [2024-06-27 22:07:03,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 311 transitions, 3647 flow, removed 62 selfloop flow, removed 3 redundant places. [2024-06-27 22:07:03,474 INFO L231 Difference]: Finished difference. Result has 140 places, 278 transitions, 3275 flow [2024-06-27 22:07:03,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2664, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3275, PETRI_PLACES=140, PETRI_TRANSITIONS=278} [2024-06-27 22:07:03,475 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 85 predicate places. [2024-06-27 22:07:03,475 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 278 transitions, 3275 flow [2024-06-27 22:07:03,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:03,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:03,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:03,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:07:03,476 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:03,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:03,476 INFO L85 PathProgramCache]: Analyzing trace with hash 276890251, now seen corresponding path program 1 times [2024-06-27 22:07:03,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:03,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746769302] [2024-06-27 22:07:03,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:03,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:03,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:05,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:05,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:05,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746769302] [2024-06-27 22:07:05,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746769302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:05,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:05,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:07:05,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878921907] [2024-06-27 22:07:05,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:05,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:07:05,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:05,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:07:05,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:07:05,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:07:05,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 278 transitions, 3275 flow. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 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 22:07:05,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:05,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:07:05,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:06,907 INFO L124 PetriNetUnfolderBase]: 5909/10066 cut-off events. [2024-06-27 22:07:06,908 INFO L125 PetriNetUnfolderBase]: For 137312/137394 co-relation queries the response was YES. [2024-06-27 22:07:06,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47829 conditions, 10066 events. 5909/10066 cut-off events. For 137312/137394 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 69482 event pairs, 2536 based on Foata normal form. 49/9762 useless extension candidates. Maximal degree in co-relation 47767. Up to 8327 conditions per place. [2024-06-27 22:07:07,008 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 234 selfloop transitions, 12 changer transitions 0/293 dead transitions. [2024-06-27 22:07:07,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 293 transitions, 3863 flow [2024-06-27 22:07:07,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:07:07,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:07:07,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-06-27 22:07:07,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-06-27 22:07:07,009 INFO L175 Difference]: Start difference. First operand has 140 places, 278 transitions, 3275 flow. Second operand 5 states and 119 transitions. [2024-06-27 22:07:07,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 293 transitions, 3863 flow [2024-06-27 22:07:07,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 293 transitions, 3651 flow, removed 77 selfloop flow, removed 3 redundant places. [2024-06-27 22:07:07,155 INFO L231 Difference]: Finished difference. Result has 142 places, 282 transitions, 3142 flow [2024-06-27 22:07:07,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3063, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3142, PETRI_PLACES=142, PETRI_TRANSITIONS=282} [2024-06-27 22:07:07,156 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 87 predicate places. [2024-06-27 22:07:07,156 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 282 transitions, 3142 flow [2024-06-27 22:07:07,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 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 22:07:07,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:07,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:07,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:07:07,157 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:07,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:07,157 INFO L85 PathProgramCache]: Analyzing trace with hash -177449714, now seen corresponding path program 1 times [2024-06-27 22:07:07,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:07,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979210133] [2024-06-27 22:07:07,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:07,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:09,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:09,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:09,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979210133] [2024-06-27 22:07:09,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979210133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:09,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:09,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:07:09,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459681002] [2024-06-27 22:07:09,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:09,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:07:09,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:09,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:07:09,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:07:09,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 22:07:09,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 282 transitions, 3142 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:09,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:09,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 22:07:09,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:11,759 INFO L124 PetriNetUnfolderBase]: 5131/8509 cut-off events. [2024-06-27 22:07:11,759 INFO L125 PetriNetUnfolderBase]: For 133103/133103 co-relation queries the response was YES. [2024-06-27 22:07:11,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44901 conditions, 8509 events. 5131/8509 cut-off events. For 133103/133103 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 56051 event pairs, 1744 based on Foata normal form. 2/8305 useless extension candidates. Maximal degree in co-relation 44837. Up to 7004 conditions per place. [2024-06-27 22:07:11,820 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 248 selfloop transitions, 65 changer transitions 0/337 dead transitions. [2024-06-27 22:07:11,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 337 transitions, 4219 flow [2024-06-27 22:07:11,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:07:11,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:07:11,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 245 transitions. [2024-06-27 22:07:11,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:07:11,822 INFO L175 Difference]: Start difference. First operand has 142 places, 282 transitions, 3142 flow. Second operand 10 states and 245 transitions. [2024-06-27 22:07:11,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 337 transitions, 4219 flow [2024-06-27 22:07:11,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 337 transitions, 4152 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-27 22:07:11,933 INFO L231 Difference]: Finished difference. Result has 150 places, 291 transitions, 3362 flow [2024-06-27 22:07:11,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3075, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3362, PETRI_PLACES=150, PETRI_TRANSITIONS=291} [2024-06-27 22:07:11,934 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 95 predicate places. [2024-06-27 22:07:11,934 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 291 transitions, 3362 flow [2024-06-27 22:07:11,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:11,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:11,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:11,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:07:11,934 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:11,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:11,935 INFO L85 PathProgramCache]: Analyzing trace with hash -618987656, now seen corresponding path program 2 times [2024-06-27 22:07:11,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:11,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798784251] [2024-06-27 22:07:11,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:11,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:11,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:14,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:14,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:14,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798784251] [2024-06-27 22:07:14,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798784251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:14,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:14,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:07:14,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442331976] [2024-06-27 22:07:14,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:14,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:07:14,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:14,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:07:14,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:07:14,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 22:07:14,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 291 transitions, 3362 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:14,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:14,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 22:07:14,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:15,993 INFO L124 PetriNetUnfolderBase]: 5136/8520 cut-off events. [2024-06-27 22:07:15,993 INFO L125 PetriNetUnfolderBase]: For 145298/145298 co-relation queries the response was YES. [2024-06-27 22:07:16,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46353 conditions, 8520 events. 5136/8520 cut-off events. For 145298/145298 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 56153 event pairs, 1751 based on Foata normal form. 2/8315 useless extension candidates. Maximal degree in co-relation 46287. Up to 7045 conditions per place. [2024-06-27 22:07:16,077 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 240 selfloop transitions, 73 changer transitions 0/337 dead transitions. [2024-06-27 22:07:16,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 337 transitions, 4314 flow [2024-06-27 22:07:16,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:07:16,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:07:16,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 220 transitions. [2024-06-27 22:07:16,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4988662131519274 [2024-06-27 22:07:16,079 INFO L175 Difference]: Start difference. First operand has 150 places, 291 transitions, 3362 flow. Second operand 9 states and 220 transitions. [2024-06-27 22:07:16,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 337 transitions, 4314 flow [2024-06-27 22:07:16,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 337 transitions, 4194 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-27 22:07:16,226 INFO L231 Difference]: Finished difference. Result has 156 places, 298 transitions, 3594 flow [2024-06-27 22:07:16,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3242, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3594, PETRI_PLACES=156, PETRI_TRANSITIONS=298} [2024-06-27 22:07:16,227 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 101 predicate places. [2024-06-27 22:07:16,227 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 298 transitions, 3594 flow [2024-06-27 22:07:16,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:16,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:16,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:16,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:07:16,228 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:16,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:16,228 INFO L85 PathProgramCache]: Analyzing trace with hash -622562421, now seen corresponding path program 1 times [2024-06-27 22:07:16,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:16,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653075978] [2024-06-27 22:07:16,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:16,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:16,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:17,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:17,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:17,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653075978] [2024-06-27 22:07:17,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653075978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:17,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:17,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:07:17,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745314307] [2024-06-27 22:07:17,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:17,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:07:17,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:17,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:07:17,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:07:18,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:07:18,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 298 transitions, 3594 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:18,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:18,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:07:18,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:19,788 INFO L124 PetriNetUnfolderBase]: 5416/9071 cut-off events. [2024-06-27 22:07:19,789 INFO L125 PetriNetUnfolderBase]: For 162098/162098 co-relation queries the response was YES. [2024-06-27 22:07:19,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49841 conditions, 9071 events. 5416/9071 cut-off events. For 162098/162098 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 60315 event pairs, 1836 based on Foata normal form. 2/8777 useless extension candidates. Maximal degree in co-relation 49771. Up to 7493 conditions per place. [2024-06-27 22:07:19,862 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 272 selfloop transitions, 56 changer transitions 0/339 dead transitions. [2024-06-27 22:07:19,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 339 transitions, 4500 flow [2024-06-27 22:07:19,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:07:19,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:07:19,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-27 22:07:19,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5051020408163265 [2024-06-27 22:07:19,864 INFO L175 Difference]: Start difference. First operand has 156 places, 298 transitions, 3594 flow. Second operand 8 states and 198 transitions. [2024-06-27 22:07:19,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 339 transitions, 4500 flow [2024-06-27 22:07:20,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 339 transitions, 4411 flow, removed 38 selfloop flow, removed 3 redundant places. [2024-06-27 22:07:20,025 INFO L231 Difference]: Finished difference. Result has 161 places, 301 transitions, 3697 flow [2024-06-27 22:07:20,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3505, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3697, PETRI_PLACES=161, PETRI_TRANSITIONS=301} [2024-06-27 22:07:20,026 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 106 predicate places. [2024-06-27 22:07:20,026 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 301 transitions, 3697 flow [2024-06-27 22:07:20,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:20,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:20,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:20,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:07:20,027 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:20,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:20,027 INFO L85 PathProgramCache]: Analyzing trace with hash -173640279, now seen corresponding path program 2 times [2024-06-27 22:07:20,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:20,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708567823] [2024-06-27 22:07:20,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:20,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:20,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:21,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:21,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:21,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708567823] [2024-06-27 22:07:21,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708567823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:21,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:21,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:07:21,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651126963] [2024-06-27 22:07:21,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:21,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:07:21,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:21,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:07:21,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:07:22,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:07:22,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 301 transitions, 3697 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:22,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:22,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:07:22,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:23,966 INFO L124 PetriNetUnfolderBase]: 5495/9193 cut-off events. [2024-06-27 22:07:23,966 INFO L125 PetriNetUnfolderBase]: For 179827/179829 co-relation queries the response was YES. [2024-06-27 22:07:24,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52246 conditions, 9193 events. 5495/9193 cut-off events. For 179827/179829 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 61145 event pairs, 1858 based on Foata normal form. 2/8896 useless extension candidates. Maximal degree in co-relation 52175. Up to 7269 conditions per place. [2024-06-27 22:07:24,067 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 247 selfloop transitions, 114 changer transitions 0/372 dead transitions. [2024-06-27 22:07:24,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 372 transitions, 5244 flow [2024-06-27 22:07:24,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:07:24,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:07:24,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-27 22:07:24,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5331632653061225 [2024-06-27 22:07:24,068 INFO L175 Difference]: Start difference. First operand has 161 places, 301 transitions, 3697 flow. Second operand 8 states and 209 transitions. [2024-06-27 22:07:24,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 372 transitions, 5244 flow [2024-06-27 22:07:24,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 372 transitions, 5045 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-27 22:07:24,292 INFO L231 Difference]: Finished difference. Result has 163 places, 310 transitions, 3941 flow [2024-06-27 22:07:24,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3498, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3941, PETRI_PLACES=163, PETRI_TRANSITIONS=310} [2024-06-27 22:07:24,293 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 108 predicate places. [2024-06-27 22:07:24,294 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 310 transitions, 3941 flow [2024-06-27 22:07:24,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:24,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:24,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:24,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:07:24,294 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:24,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:24,295 INFO L85 PathProgramCache]: Analyzing trace with hash -173640434, now seen corresponding path program 3 times [2024-06-27 22:07:24,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:24,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212049840] [2024-06-27 22:07:24,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:24,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:24,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:26,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:26,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:26,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212049840] [2024-06-27 22:07:26,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212049840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:26,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:26,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:07:26,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103652838] [2024-06-27 22:07:26,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:26,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:07:26,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:26,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:07:26,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:07:26,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 22:07:26,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 310 transitions, 3941 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:26,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:26,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 22:07:26,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:28,479 INFO L124 PetriNetUnfolderBase]: 5287/8757 cut-off events. [2024-06-27 22:07:28,479 INFO L125 PetriNetUnfolderBase]: For 194177/194179 co-relation queries the response was YES. [2024-06-27 22:07:28,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52229 conditions, 8757 events. 5287/8757 cut-off events. For 194177/194179 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 57833 event pairs, 1667 based on Foata normal form. 4/8546 useless extension candidates. Maximal degree in co-relation 52157. Up to 7059 conditions per place. [2024-06-27 22:07:28,575 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 231 selfloop transitions, 115 changer transitions 0/374 dead transitions. [2024-06-27 22:07:28,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 374 transitions, 5318 flow [2024-06-27 22:07:28,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:07:28,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:07:28,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-27 22:07:28,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5056689342403629 [2024-06-27 22:07:28,577 INFO L175 Difference]: Start difference. First operand has 163 places, 310 transitions, 3941 flow. Second operand 9 states and 223 transitions. [2024-06-27 22:07:28,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 374 transitions, 5318 flow [2024-06-27 22:07:28,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 374 transitions, 5191 flow, removed 33 selfloop flow, removed 3 redundant places. [2024-06-27 22:07:28,754 INFO L231 Difference]: Finished difference. Result has 171 places, 325 transitions, 4500 flow [2024-06-27 22:07:28,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3814, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4500, PETRI_PLACES=171, PETRI_TRANSITIONS=325} [2024-06-27 22:07:28,754 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 116 predicate places. [2024-06-27 22:07:28,755 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 325 transitions, 4500 flow [2024-06-27 22:07:28,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:28,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:28,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:28,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:07:28,755 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:28,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:28,756 INFO L85 PathProgramCache]: Analyzing trace with hash -173634699, now seen corresponding path program 3 times [2024-06-27 22:07:28,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:28,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964893260] [2024-06-27 22:07:28,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:28,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:28,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:30,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:30,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:30,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964893260] [2024-06-27 22:07:30,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964893260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:30,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:30,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:07:30,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225074652] [2024-06-27 22:07:30,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:30,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:07:30,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:30,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:07:30,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:07:30,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:07:30,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 325 transitions, 4500 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:30,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:30,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:07:30,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:32,458 INFO L124 PetriNetUnfolderBase]: 5533/9258 cut-off events. [2024-06-27 22:07:32,458 INFO L125 PetriNetUnfolderBase]: For 216654/216656 co-relation queries the response was YES. [2024-06-27 22:07:32,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56514 conditions, 9258 events. 5533/9258 cut-off events. For 216654/216656 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 61681 event pairs, 1860 based on Foata normal form. 2/8958 useless extension candidates. Maximal degree in co-relation 56438. Up to 7324 conditions per place. [2024-06-27 22:07:32,558 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 251 selfloop transitions, 121 changer transitions 0/383 dead transitions. [2024-06-27 22:07:32,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 383 transitions, 5749 flow [2024-06-27 22:07:32,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:07:32,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:07:32,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-27 22:07:32,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5255102040816326 [2024-06-27 22:07:32,559 INFO L175 Difference]: Start difference. First operand has 171 places, 325 transitions, 4500 flow. Second operand 8 states and 206 transitions. [2024-06-27 22:07:32,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 383 transitions, 5749 flow [2024-06-27 22:07:32,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 383 transitions, 5496 flow, removed 108 selfloop flow, removed 3 redundant places. [2024-06-27 22:07:32,815 INFO L231 Difference]: Finished difference. Result has 176 places, 325 transitions, 4500 flow [2024-06-27 22:07:32,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4247, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4500, PETRI_PLACES=176, PETRI_TRANSITIONS=325} [2024-06-27 22:07:32,816 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 121 predicate places. [2024-06-27 22:07:32,816 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 325 transitions, 4500 flow [2024-06-27 22:07:32,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:32,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:32,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:32,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:07:32,817 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:32,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:32,817 INFO L85 PathProgramCache]: Analyzing trace with hash -173634482, now seen corresponding path program 1 times [2024-06-27 22:07:32,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:32,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820713157] [2024-06-27 22:07:32,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:32,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:32,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:34,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:34,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:34,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820713157] [2024-06-27 22:07:34,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820713157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:34,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:34,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:07:34,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465315533] [2024-06-27 22:07:34,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:34,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:07:34,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:34,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:07:34,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:07:34,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:07:34,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 325 transitions, 4500 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:34,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:34,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:07:34,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:36,457 INFO L124 PetriNetUnfolderBase]: 5640/9146 cut-off events. [2024-06-27 22:07:36,457 INFO L125 PetriNetUnfolderBase]: For 227593/227595 co-relation queries the response was YES. [2024-06-27 22:07:36,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57648 conditions, 9146 events. 5640/9146 cut-off events. For 227593/227595 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 58854 event pairs, 1823 based on Foata normal form. 4/8927 useless extension candidates. Maximal degree in co-relation 57571. Up to 7633 conditions per place. [2024-06-27 22:07:36,548 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 297 selfloop transitions, 74 changer transitions 0/382 dead transitions. [2024-06-27 22:07:36,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 382 transitions, 5777 flow [2024-06-27 22:07:36,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:07:36,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:07:36,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-06-27 22:07:36,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5280612244897959 [2024-06-27 22:07:36,557 INFO L175 Difference]: Start difference. First operand has 176 places, 325 transitions, 4500 flow. Second operand 8 states and 207 transitions. [2024-06-27 22:07:36,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 382 transitions, 5777 flow [2024-06-27 22:07:36,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 382 transitions, 5511 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 22:07:36,812 INFO L231 Difference]: Finished difference. Result has 177 places, 331 transitions, 4515 flow [2024-06-27 22:07:36,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4234, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4515, PETRI_PLACES=177, PETRI_TRANSITIONS=331} [2024-06-27 22:07:36,813 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 122 predicate places. [2024-06-27 22:07:36,813 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 331 transitions, 4515 flow [2024-06-27 22:07:36,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:36,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:36,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:36,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 22:07:36,813 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:36,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:36,814 INFO L85 PathProgramCache]: Analyzing trace with hash -344661392, now seen corresponding path program 2 times [2024-06-27 22:07:36,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:36,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463258618] [2024-06-27 22:07:36,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:36,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:36,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:38,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:38,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:38,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463258618] [2024-06-27 22:07:38,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463258618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:38,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:38,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:07:38,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153516577] [2024-06-27 22:07:38,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:38,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:07:38,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:38,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:07:38,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:07:38,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:07:38,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 331 transitions, 4515 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:38,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:38,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:07:38,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:40,189 INFO L124 PetriNetUnfolderBase]: 5686/9222 cut-off events. [2024-06-27 22:07:40,189 INFO L125 PetriNetUnfolderBase]: For 243527/243527 co-relation queries the response was YES. [2024-06-27 22:07:40,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59194 conditions, 9222 events. 5686/9222 cut-off events. For 243527/243527 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 59383 event pairs, 1866 based on Foata normal form. 4/9001 useless extension candidates. Maximal degree in co-relation 59116. Up to 7933 conditions per place. [2024-06-27 22:07:40,296 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 335 selfloop transitions, 23 changer transitions 0/369 dead transitions. [2024-06-27 22:07:40,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 369 transitions, 5497 flow [2024-06-27 22:07:40,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:07:40,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:07:40,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-27 22:07:40,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49489795918367346 [2024-06-27 22:07:40,298 INFO L175 Difference]: Start difference. First operand has 177 places, 331 transitions, 4515 flow. Second operand 8 states and 194 transitions. [2024-06-27 22:07:40,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 369 transitions, 5497 flow [2024-06-27 22:07:40,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 369 transitions, 5399 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-27 22:07:40,567 INFO L231 Difference]: Finished difference. Result has 181 places, 334 transitions, 4541 flow [2024-06-27 22:07:40,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4419, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4541, PETRI_PLACES=181, PETRI_TRANSITIONS=334} [2024-06-27 22:07:40,567 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 126 predicate places. [2024-06-27 22:07:40,567 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 334 transitions, 4541 flow [2024-06-27 22:07:40,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:40,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:40,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:40,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 22:07:40,568 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:40,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:40,569 INFO L85 PathProgramCache]: Analyzing trace with hash -29542142, now seen corresponding path program 3 times [2024-06-27 22:07:40,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:40,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384167078] [2024-06-27 22:07:40,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:40,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:40,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:42,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:42,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:42,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384167078] [2024-06-27 22:07:42,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384167078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:42,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:42,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:07:42,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694854604] [2024-06-27 22:07:42,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:42,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:07:42,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:42,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:07:42,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:07:42,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:07:42,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 334 transitions, 4541 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:42,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:42,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:07:42,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:43,923 INFO L124 PetriNetUnfolderBase]: 5704/9250 cut-off events. [2024-06-27 22:07:43,923 INFO L125 PetriNetUnfolderBase]: For 250876/250876 co-relation queries the response was YES. [2024-06-27 22:07:43,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59564 conditions, 9250 events. 5704/9250 cut-off events. For 250876/250876 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 59542 event pairs, 1861 based on Foata normal form. 2/9028 useless extension candidates. Maximal degree in co-relation 59484. Up to 7942 conditions per place. [2024-06-27 22:07:44,007 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 332 selfloop transitions, 35 changer transitions 0/378 dead transitions. [2024-06-27 22:07:44,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 378 transitions, 5656 flow [2024-06-27 22:07:44,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:07:44,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:07:44,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-27 22:07:44,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49489795918367346 [2024-06-27 22:07:44,009 INFO L175 Difference]: Start difference. First operand has 181 places, 334 transitions, 4541 flow. Second operand 8 states and 194 transitions. [2024-06-27 22:07:44,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 378 transitions, 5656 flow [2024-06-27 22:07:44,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 378 transitions, 5528 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-27 22:07:44,323 INFO L231 Difference]: Finished difference. Result has 184 places, 344 transitions, 4714 flow [2024-06-27 22:07:44,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4457, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4714, PETRI_PLACES=184, PETRI_TRANSITIONS=344} [2024-06-27 22:07:44,324 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 129 predicate places. [2024-06-27 22:07:44,324 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 344 transitions, 4714 flow [2024-06-27 22:07:44,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:44,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:44,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:44,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 22:07:44,324 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:44,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:44,325 INFO L85 PathProgramCache]: Analyzing trace with hash -474745431, now seen corresponding path program 4 times [2024-06-27 22:07:44,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:44,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417496319] [2024-06-27 22:07:44,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:44,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:45,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:45,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:45,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417496319] [2024-06-27 22:07:45,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417496319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:45,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:45,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:07:45,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927775943] [2024-06-27 22:07:45,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:45,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:07:45,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:45,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:07:45,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:07:45,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:07:45,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 344 transitions, 4714 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:45,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:45,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:07:45,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:47,848 INFO L124 PetriNetUnfolderBase]: 5727/9290 cut-off events. [2024-06-27 22:07:47,848 INFO L125 PetriNetUnfolderBase]: For 262668/262668 co-relation queries the response was YES. [2024-06-27 22:07:47,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60690 conditions, 9290 events. 5727/9290 cut-off events. For 262668/262668 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 59859 event pairs, 1864 based on Foata normal form. 2/9066 useless extension candidates. Maximal degree in co-relation 60608. Up to 7993 conditions per place. [2024-06-27 22:07:47,966 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 344 selfloop transitions, 28 changer transitions 0/383 dead transitions. [2024-06-27 22:07:47,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 383 transitions, 5732 flow [2024-06-27 22:07:47,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:07:47,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:07:47,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-27 22:07:47,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49489795918367346 [2024-06-27 22:07:47,967 INFO L175 Difference]: Start difference. First operand has 184 places, 344 transitions, 4714 flow. Second operand 8 states and 194 transitions. [2024-06-27 22:07:47,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 383 transitions, 5732 flow [2024-06-27 22:07:48,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 383 transitions, 5601 flow, removed 54 selfloop flow, removed 4 redundant places. [2024-06-27 22:07:48,409 INFO L231 Difference]: Finished difference. Result has 188 places, 347 transitions, 4725 flow [2024-06-27 22:07:48,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4583, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4725, PETRI_PLACES=188, PETRI_TRANSITIONS=347} [2024-06-27 22:07:48,410 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 133 predicate places. [2024-06-27 22:07:48,410 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 347 transitions, 4725 flow [2024-06-27 22:07:48,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:48,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:48,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:48,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 22:07:48,411 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:48,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:48,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1463846633, now seen corresponding path program 5 times [2024-06-27 22:07:48,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:48,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852432257] [2024-06-27 22:07:48,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:48,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:48,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:50,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:50,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:50,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852432257] [2024-06-27 22:07:50,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852432257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:50,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:50,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:07:50,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283212725] [2024-06-27 22:07:50,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:50,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:07:50,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:50,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:07:50,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:07:50,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:07:50,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 347 transitions, 4725 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:50,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:50,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:07:50,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:52,219 INFO L124 PetriNetUnfolderBase]: 5750/9322 cut-off events. [2024-06-27 22:07:52,219 INFO L125 PetriNetUnfolderBase]: For 273234/273234 co-relation queries the response was YES. [2024-06-27 22:07:52,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61336 conditions, 9322 events. 5750/9322 cut-off events. For 273234/273234 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 60080 event pairs, 1861 based on Foata normal form. 2/9098 useless extension candidates. Maximal degree in co-relation 61252. Up to 7905 conditions per place. [2024-06-27 22:07:52,312 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 332 selfloop transitions, 57 changer transitions 0/400 dead transitions. [2024-06-27 22:07:52,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 400 transitions, 6055 flow [2024-06-27 22:07:52,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:07:52,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:07:52,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-27 22:07:52,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2024-06-27 22:07:52,314 INFO L175 Difference]: Start difference. First operand has 188 places, 347 transitions, 4725 flow. Second operand 8 states and 200 transitions. [2024-06-27 22:07:52,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 400 transitions, 6055 flow [2024-06-27 22:07:52,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 400 transitions, 5959 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-27 22:07:52,624 INFO L231 Difference]: Finished difference. Result has 190 places, 350 transitions, 4829 flow [2024-06-27 22:07:52,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4629, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4829, PETRI_PLACES=190, PETRI_TRANSITIONS=350} [2024-06-27 22:07:52,625 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 135 predicate places. [2024-06-27 22:07:52,625 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 350 transitions, 4829 flow [2024-06-27 22:07:52,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:52,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:52,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:52,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 22:07:52,625 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:52,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:52,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1463846478, now seen corresponding path program 4 times [2024-06-27 22:07:52,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:52,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489341670] [2024-06-27 22:07:52,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:52,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:52,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:54,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:54,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:54,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489341670] [2024-06-27 22:07:54,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489341670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:54,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:54,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:07:54,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814383034] [2024-06-27 22:07:54,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:54,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:07:54,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:54,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:07:54,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:07:55,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 22:07:55,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 350 transitions, 4829 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:55,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:55,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 22:07:55,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:56,881 INFO L124 PetriNetUnfolderBase]: 5528/9114 cut-off events. [2024-06-27 22:07:56,882 INFO L125 PetriNetUnfolderBase]: For 283091/283100 co-relation queries the response was YES. [2024-06-27 22:07:56,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60307 conditions, 9114 events. 5528/9114 cut-off events. For 283091/283100 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 60066 event pairs, 1761 based on Foata normal form. 2/8885 useless extension candidates. Maximal degree in co-relation 60222. Up to 7587 conditions per place. [2024-06-27 22:07:56,994 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 329 selfloop transitions, 41 changer transitions 0/400 dead transitions. [2024-06-27 22:07:56,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 400 transitions, 5988 flow [2024-06-27 22:07:56,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:07:56,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:07:56,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 218 transitions. [2024-06-27 22:07:56,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4943310657596372 [2024-06-27 22:07:56,996 INFO L175 Difference]: Start difference. First operand has 190 places, 350 transitions, 4829 flow. Second operand 9 states and 218 transitions. [2024-06-27 22:07:56,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 400 transitions, 5988 flow [2024-06-27 22:07:57,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 400 transitions, 5784 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-27 22:07:57,543 INFO L231 Difference]: Finished difference. Result has 195 places, 360 transitions, 4941 flow [2024-06-27 22:07:57,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4625, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4941, PETRI_PLACES=195, PETRI_TRANSITIONS=360} [2024-06-27 22:07:57,544 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 140 predicate places. [2024-06-27 22:07:57,544 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 360 transitions, 4941 flow [2024-06-27 22:07:57,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:57,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:57,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:57,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 22:07:57,545 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:57,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:57,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1463852213, now seen corresponding path program 6 times [2024-06-27 22:07:57,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:57,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529998904] [2024-06-27 22:07:57,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:57,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:57,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:59,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:59,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:59,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529998904] [2024-06-27 22:07:59,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529998904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:59,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:59,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:07:59,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282282336] [2024-06-27 22:07:59,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:59,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:07:59,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:59,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:07:59,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:07:59,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:07:59,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 360 transitions, 4941 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:59,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:59,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:07:59,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:01,264 INFO L124 PetriNetUnfolderBase]: 5768/9353 cut-off events. [2024-06-27 22:08:01,265 INFO L125 PetriNetUnfolderBase]: For 299517/299517 co-relation queries the response was YES. [2024-06-27 22:08:01,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63129 conditions, 9353 events. 5768/9353 cut-off events. For 299517/299517 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 60273 event pairs, 1867 based on Foata normal form. 2/9128 useless extension candidates. Maximal degree in co-relation 63041. Up to 7932 conditions per place. [2024-06-27 22:08:01,372 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 343 selfloop transitions, 54 changer transitions 0/408 dead transitions. [2024-06-27 22:08:01,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 408 transitions, 6086 flow [2024-06-27 22:08:01,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:08:01,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:08:01,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-27 22:08:01,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5076530612244898 [2024-06-27 22:08:01,375 INFO L175 Difference]: Start difference. First operand has 195 places, 360 transitions, 4941 flow. Second operand 8 states and 199 transitions. [2024-06-27 22:08:01,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 408 transitions, 6086 flow [2024-06-27 22:08:01,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 408 transitions, 5798 flow, removed 93 selfloop flow, removed 6 redundant places. [2024-06-27 22:08:01,775 INFO L231 Difference]: Finished difference. Result has 197 places, 360 transitions, 4771 flow [2024-06-27 22:08:01,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4653, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4771, PETRI_PLACES=197, PETRI_TRANSITIONS=360} [2024-06-27 22:08:01,775 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 142 predicate places. [2024-06-27 22:08:01,775 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 360 transitions, 4771 flow [2024-06-27 22:08:01,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:01,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:01,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:01,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 22:08:01,776 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:08:01,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:01,777 INFO L85 PathProgramCache]: Analyzing trace with hash -2067978342, now seen corresponding path program 4 times [2024-06-27 22:08:01,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:01,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456962417] [2024-06-27 22:08:01,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:01,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:03,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:03,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:03,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456962417] [2024-06-27 22:08:03,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456962417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:03,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:03,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:08:03,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071625823] [2024-06-27 22:08:03,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:03,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:08:03,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:03,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:08:03,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:08:03,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:08:03,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 360 transitions, 4771 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:03,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:03,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:08:03,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:05,609 INFO L124 PetriNetUnfolderBase]: 5791/9397 cut-off events. [2024-06-27 22:08:05,609 INFO L125 PetriNetUnfolderBase]: For 309083/309083 co-relation queries the response was YES. [2024-06-27 22:08:05,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63470 conditions, 9397 events. 5791/9397 cut-off events. For 309083/309083 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 60737 event pairs, 1868 based on Foata normal form. 4/9171 useless extension candidates. Maximal degree in co-relation 63381. Up to 7932 conditions per place. [2024-06-27 22:08:05,694 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 345 selfloop transitions, 55 changer transitions 0/411 dead transitions. [2024-06-27 22:08:05,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 411 transitions, 6084 flow [2024-06-27 22:08:05,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:08:05,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:08:05,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-27 22:08:05,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-06-27 22:08:05,695 INFO L175 Difference]: Start difference. First operand has 197 places, 360 transitions, 4771 flow. Second operand 8 states and 203 transitions. [2024-06-27 22:08:05,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 411 transitions, 6084 flow [2024-06-27 22:08:06,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 411 transitions, 5948 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 22:08:06,053 INFO L231 Difference]: Finished difference. Result has 198 places, 363 transitions, 4827 flow [2024-06-27 22:08:06,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4635, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4827, PETRI_PLACES=198, PETRI_TRANSITIONS=363} [2024-06-27 22:08:06,054 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 143 predicate places. [2024-06-27 22:08:06,054 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 363 transitions, 4827 flow [2024-06-27 22:08:06,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:06,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:06,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:06,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 22:08:06,055 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:08:06,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:06,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1274373866, now seen corresponding path program 5 times [2024-06-27 22:08:06,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:06,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194014246] [2024-06-27 22:08:06,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:06,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:06,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:07,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:07,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:07,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194014246] [2024-06-27 22:08:07,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194014246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:07,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:07,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:08:07,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482259689] [2024-06-27 22:08:07,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:07,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:08:07,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:07,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:08:07,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:08:07,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 22:08:07,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 363 transitions, 4827 flow. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:07,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:07,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 22:08:07,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:10,069 INFO L124 PetriNetUnfolderBase]: 5685/9343 cut-off events. [2024-06-27 22:08:10,069 INFO L125 PetriNetUnfolderBase]: For 325063/325071 co-relation queries the response was YES. [2024-06-27 22:08:10,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63864 conditions, 9343 events. 5685/9343 cut-off events. For 325063/325071 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 61406 event pairs, 1605 based on Foata normal form. 6/9122 useless extension candidates. Maximal degree in co-relation 63774. Up to 7462 conditions per place. [2024-06-27 22:08:10,184 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 269 selfloop transitions, 149 changer transitions 0/448 dead transitions. [2024-06-27 22:08:10,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 448 transitions, 6655 flow [2024-06-27 22:08:10,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:08:10,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:08:10,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 249 transitions. [2024-06-27 22:08:10,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.564625850340136 [2024-06-27 22:08:10,188 INFO L175 Difference]: Start difference. First operand has 198 places, 363 transitions, 4827 flow. Second operand 9 states and 249 transitions. [2024-06-27 22:08:10,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 448 transitions, 6655 flow [2024-06-27 22:08:10,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 448 transitions, 6475 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-27 22:08:10,705 INFO L231 Difference]: Finished difference. Result has 205 places, 395 transitions, 5661 flow [2024-06-27 22:08:10,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4647, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5661, PETRI_PLACES=205, PETRI_TRANSITIONS=395} [2024-06-27 22:08:10,706 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 150 predicate places. [2024-06-27 22:08:10,706 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 395 transitions, 5661 flow [2024-06-27 22:08:10,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:10,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:10,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:10,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 22:08:10,707 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:08:10,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:10,707 INFO L85 PathProgramCache]: Analyzing trace with hash 444979088, now seen corresponding path program 6 times [2024-06-27 22:08:10,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:10,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796096218] [2024-06-27 22:08:10,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:10,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:10,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:13,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:13,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:13,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796096218] [2024-06-27 22:08:13,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796096218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:13,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:13,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:08:13,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059362680] [2024-06-27 22:08:13,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:13,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:08:13,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:13,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:08:13,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:08:13,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 22:08:13,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 395 transitions, 5661 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:13,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:13,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 22:08:13,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:15,930 INFO L124 PetriNetUnfolderBase]: 5920/9710 cut-off events. [2024-06-27 22:08:15,930 INFO L125 PetriNetUnfolderBase]: For 370727/370743 co-relation queries the response was YES. [2024-06-27 22:08:16,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70450 conditions, 9710 events. 5920/9710 cut-off events. For 370727/370743 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 63949 event pairs, 1621 based on Foata normal form. 13/9487 useless extension candidates. Maximal degree in co-relation 70356. Up to 7844 conditions per place. [2024-06-27 22:08:16,056 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 334 selfloop transitions, 160 changer transitions 0/524 dead transitions. [2024-06-27 22:08:16,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 524 transitions, 8446 flow [2024-06-27 22:08:16,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:08:16,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:08:16,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 275 transitions. [2024-06-27 22:08:16,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5612244897959183 [2024-06-27 22:08:16,057 INFO L175 Difference]: Start difference. First operand has 205 places, 395 transitions, 5661 flow. Second operand 10 states and 275 transitions. [2024-06-27 22:08:16,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 524 transitions, 8446 flow [2024-06-27 22:08:16,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 524 transitions, 8044 flow, removed 176 selfloop flow, removed 3 redundant places. [2024-06-27 22:08:16,671 INFO L231 Difference]: Finished difference. Result has 213 places, 452 transitions, 6919 flow [2024-06-27 22:08:16,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5463, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6919, PETRI_PLACES=213, PETRI_TRANSITIONS=452} [2024-06-27 22:08:16,672 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 158 predicate places. [2024-06-27 22:08:16,672 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 452 transitions, 6919 flow [2024-06-27 22:08:16,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:16,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:16,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:16,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 22:08:16,673 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:08:16,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:16,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1219159231, now seen corresponding path program 7 times [2024-06-27 22:08:16,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:16,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315629338] [2024-06-27 22:08:16,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:16,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:16,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:18,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:18,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:18,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315629338] [2024-06-27 22:08:18,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315629338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:18,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:18,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:08:18,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364694480] [2024-06-27 22:08:18,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:18,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:08:18,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:18,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:08:18,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:08:18,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:08:18,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 452 transitions, 6919 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:18,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:18,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:08:18,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:21,175 INFO L124 PetriNetUnfolderBase]: 6255/10082 cut-off events. [2024-06-27 22:08:21,175 INFO L125 PetriNetUnfolderBase]: For 377703/377711 co-relation queries the response was YES. [2024-06-27 22:08:21,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74169 conditions, 10082 events. 6255/10082 cut-off events. For 377703/377711 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 64923 event pairs, 1819 based on Foata normal form. 6/9853 useless extension candidates. Maximal degree in co-relation 74073. Up to 8538 conditions per place. [2024-06-27 22:08:21,315 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 401 selfloop transitions, 115 changer transitions 0/527 dead transitions. [2024-06-27 22:08:21,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 527 transitions, 8890 flow [2024-06-27 22:08:21,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:08:21,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:08:21,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 270 transitions. [2024-06-27 22:08:21,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5009276437847866 [2024-06-27 22:08:21,334 INFO L175 Difference]: Start difference. First operand has 213 places, 452 transitions, 6919 flow. Second operand 11 states and 270 transitions. [2024-06-27 22:08:21,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 527 transitions, 8890 flow [2024-06-27 22:08:22,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 527 transitions, 8554 flow, removed 109 selfloop flow, removed 4 redundant places. [2024-06-27 22:08:22,169 INFO L231 Difference]: Finished difference. Result has 221 places, 475 transitions, 7314 flow [2024-06-27 22:08:22,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6589, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7314, PETRI_PLACES=221, PETRI_TRANSITIONS=475} [2024-06-27 22:08:22,171 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 166 predicate places. [2024-06-27 22:08:22,171 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 475 transitions, 7314 flow [2024-06-27 22:08:22,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:22,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:22,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:22,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 22:08:22,172 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:08:22,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:22,172 INFO L85 PathProgramCache]: Analyzing trace with hash 974957258, now seen corresponding path program 7 times [2024-06-27 22:08:22,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:22,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480724671] [2024-06-27 22:08:22,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:22,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:22,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:24,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:24,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:24,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480724671] [2024-06-27 22:08:24,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480724671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:24,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:24,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:08:24,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65710910] [2024-06-27 22:08:24,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:24,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:08:24,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:24,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:08:24,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:08:25,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 22:08:25,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 475 transitions, 7314 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:25,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:25,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 22:08:25,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:27,833 INFO L124 PetriNetUnfolderBase]: 6054/9927 cut-off events. [2024-06-27 22:08:27,833 INFO L125 PetriNetUnfolderBase]: For 395179/395187 co-relation queries the response was YES. [2024-06-27 22:08:27,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74337 conditions, 9927 events. 6054/9927 cut-off events. For 395179/395187 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 65450 event pairs, 1717 based on Foata normal form. 7/9693 useless extension candidates. Maximal degree in co-relation 74238. Up to 8140 conditions per place. [2024-06-27 22:08:27,967 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 377 selfloop transitions, 139 changer transitions 0/552 dead transitions. [2024-06-27 22:08:27,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 552 transitions, 9075 flow [2024-06-27 22:08:27,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 22:08:27,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 22:08:27,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 317 transitions. [2024-06-27 22:08:27,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4976452119309262 [2024-06-27 22:08:27,977 INFO L175 Difference]: Start difference. First operand has 221 places, 475 transitions, 7314 flow. Second operand 13 states and 317 transitions. [2024-06-27 22:08:27,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 552 transitions, 9075 flow [2024-06-27 22:08:28,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 552 transitions, 8831 flow, removed 79 selfloop flow, removed 6 redundant places. [2024-06-27 22:08:28,655 INFO L231 Difference]: Finished difference. Result has 228 places, 493 transitions, 7761 flow [2024-06-27 22:08:28,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=7070, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7761, PETRI_PLACES=228, PETRI_TRANSITIONS=493} [2024-06-27 22:08:28,665 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 173 predicate places. [2024-06-27 22:08:28,666 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 493 transitions, 7761 flow [2024-06-27 22:08:28,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:28,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:28,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:28,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 22:08:28,666 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:08:28,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:28,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1316383406, now seen corresponding path program 8 times [2024-06-27 22:08:28,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:28,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304471584] [2024-06-27 22:08:28,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:28,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:28,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:31,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:31,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:31,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304471584] [2024-06-27 22:08:31,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304471584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:31,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:31,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:08:31,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337463436] [2024-06-27 22:08:31,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:31,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:08:31,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:31,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:08:31,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:08:31,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 22:08:31,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 493 transitions, 7761 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:31,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:31,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 22:08:31,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:34,070 INFO L124 PetriNetUnfolderBase]: 6091/9966 cut-off events. [2024-06-27 22:08:34,070 INFO L125 PetriNetUnfolderBase]: For 407856/407873 co-relation queries the response was YES. [2024-06-27 22:08:34,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75556 conditions, 9966 events. 6091/9966 cut-off events. For 407856/407873 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 65498 event pairs, 1600 based on Foata normal form. 15/9742 useless extension candidates. Maximal degree in co-relation 75455. Up to 7853 conditions per place. [2024-06-27 22:08:34,193 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 306 selfloop transitions, 214 changer transitions 0/556 dead transitions. [2024-06-27 22:08:34,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 556 transitions, 9539 flow [2024-06-27 22:08:34,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:08:34,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:08:34,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 226 transitions. [2024-06-27 22:08:34,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.576530612244898 [2024-06-27 22:08:34,195 INFO L175 Difference]: Start difference. First operand has 228 places, 493 transitions, 7761 flow. Second operand 8 states and 226 transitions. [2024-06-27 22:08:34,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 556 transitions, 9539 flow [2024-06-27 22:08:35,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 556 transitions, 9231 flow, removed 64 selfloop flow, removed 7 redundant places. [2024-06-27 22:08:35,040 INFO L231 Difference]: Finished difference. Result has 229 places, 499 transitions, 8103 flow [2024-06-27 22:08:35,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=7453, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8103, PETRI_PLACES=229, PETRI_TRANSITIONS=499} [2024-06-27 22:08:35,041 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 174 predicate places. [2024-06-27 22:08:35,041 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 499 transitions, 8103 flow [2024-06-27 22:08:35,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:35,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:35,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:35,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 22:08:35,041 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:08:35,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:35,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1316293041, now seen corresponding path program 8 times [2024-06-27 22:08:35,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:35,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449092809] [2024-06-27 22:08:35,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:35,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:35,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:37,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:37,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:37,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449092809] [2024-06-27 22:08:37,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449092809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:37,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:37,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:08:37,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141134323] [2024-06-27 22:08:37,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:37,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:08:37,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:37,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:08:37,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:08:37,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:08:37,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 499 transitions, 8103 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:37,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:37,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:08:37,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:39,814 INFO L124 PetriNetUnfolderBase]: 6379/10262 cut-off events. [2024-06-27 22:08:39,814 INFO L125 PetriNetUnfolderBase]: For 422657/422672 co-relation queries the response was YES. [2024-06-27 22:08:39,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78476 conditions, 10262 events. 6379/10262 cut-off events. For 422657/422672 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 66060 event pairs, 1830 based on Foata normal form. 15/10039 useless extension candidates. Maximal degree in co-relation 78375. Up to 8783 conditions per place. [2024-06-27 22:08:39,960 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 444 selfloop transitions, 98 changer transitions 0/553 dead transitions. [2024-06-27 22:08:39,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 553 transitions, 9579 flow [2024-06-27 22:08:39,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:08:39,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:08:39,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-06-27 22:08:39,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5011337868480725 [2024-06-27 22:08:39,962 INFO L175 Difference]: Start difference. First operand has 229 places, 499 transitions, 8103 flow. Second operand 9 states and 221 transitions. [2024-06-27 22:08:39,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 553 transitions, 9579 flow [2024-06-27 22:08:41,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 553 transitions, 8996 flow, removed 135 selfloop flow, removed 6 redundant places. [2024-06-27 22:08:41,048 INFO L231 Difference]: Finished difference. Result has 232 places, 514 transitions, 7941 flow [2024-06-27 22:08:41,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=7556, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7941, PETRI_PLACES=232, PETRI_TRANSITIONS=514} [2024-06-27 22:08:41,053 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 177 predicate places. [2024-06-27 22:08:41,054 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 514 transitions, 7941 flow [2024-06-27 22:08:41,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:41,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:41,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:41,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 22:08:41,054 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:08:41,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:41,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1316293196, now seen corresponding path program 9 times [2024-06-27 22:08:41,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:41,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117571977] [2024-06-27 22:08:41,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:41,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:41,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:43,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:43,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:43,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117571977] [2024-06-27 22:08:43,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117571977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:43,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:43,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:08:43,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86401272] [2024-06-27 22:08:43,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:43,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:08:43,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:43,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:08:43,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:08:44,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-06-27 22:08:44,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 514 transitions, 7941 flow. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:44,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:44,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-06-27 22:08:44,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:46,112 INFO L124 PetriNetUnfolderBase]: 5584/9373 cut-off events. [2024-06-27 22:08:46,112 INFO L125 PetriNetUnfolderBase]: For 383941/384003 co-relation queries the response was YES. [2024-06-27 22:08:46,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68973 conditions, 9373 events. 5584/9373 cut-off events. For 383941/384003 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 63140 event pairs, 1948 based on Foata normal form. 8/9045 useless extension candidates. Maximal degree in co-relation 68871. Up to 7422 conditions per place. [2024-06-27 22:08:46,238 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 358 selfloop transitions, 141 changer transitions 0/551 dead transitions. [2024-06-27 22:08:46,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 551 transitions, 9145 flow [2024-06-27 22:08:46,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:08:46,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:08:46,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-27 22:08:46,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-06-27 22:08:46,240 INFO L175 Difference]: Start difference. First operand has 232 places, 514 transitions, 7941 flow. Second operand 8 states and 210 transitions. [2024-06-27 22:08:46,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 551 transitions, 9145 flow [2024-06-27 22:08:47,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 551 transitions, 8744 flow, removed 149 selfloop flow, removed 4 redundant places. [2024-06-27 22:08:47,040 INFO L231 Difference]: Finished difference. Result has 236 places, 514 transitions, 7886 flow [2024-06-27 22:08:47,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=7548, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7886, PETRI_PLACES=236, PETRI_TRANSITIONS=514} [2024-06-27 22:08:47,041 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 181 predicate places. [2024-06-27 22:08:47,041 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 514 transitions, 7886 flow [2024-06-27 22:08:47,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:47,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:47,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:47,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 22:08:47,042 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:08:47,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:47,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1312568174, now seen corresponding path program 5 times [2024-06-27 22:08:47,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:47,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059891615] [2024-06-27 22:08:47,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:47,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:47,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:49,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:49,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:49,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059891615] [2024-06-27 22:08:49,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059891615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:49,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:49,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:08:49,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693513310] [2024-06-27 22:08:49,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:49,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:08:49,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:49,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:08:49,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:08:49,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:08:49,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 514 transitions, 7886 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:49,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:49,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:08:49,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:51,919 INFO L124 PetriNetUnfolderBase]: 6434/10310 cut-off events. [2024-06-27 22:08:51,919 INFO L125 PetriNetUnfolderBase]: For 411221/411229 co-relation queries the response was YES. [2024-06-27 22:08:52,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77336 conditions, 10310 events. 6434/10310 cut-off events. For 411221/411229 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 66178 event pairs, 1849 based on Foata normal form. 6/10085 useless extension candidates. Maximal degree in co-relation 77233. Up to 8719 conditions per place. [2024-06-27 22:08:52,069 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 457 selfloop transitions, 113 changer transitions 0/581 dead transitions. [2024-06-27 22:08:52,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 581 transitions, 9638 flow [2024-06-27 22:08:52,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:08:52,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:08:52,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 227 transitions. [2024-06-27 22:08:52,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5147392290249433 [2024-06-27 22:08:52,071 INFO L175 Difference]: Start difference. First operand has 236 places, 514 transitions, 7886 flow. Second operand 9 states and 227 transitions. [2024-06-27 22:08:52,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 581 transitions, 9638 flow [2024-06-27 22:08:52,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 581 transitions, 9360 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 22:08:52,795 INFO L231 Difference]: Finished difference. Result has 240 places, 542 transitions, 8268 flow [2024-06-27 22:08:52,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=7608, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8268, PETRI_PLACES=240, PETRI_TRANSITIONS=542} [2024-06-27 22:08:52,796 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 185 predicate places. [2024-06-27 22:08:52,797 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 542 transitions, 8268 flow [2024-06-27 22:08:52,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:52,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:52,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:52,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 22:08:52,800 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:08:52,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:52,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1312568391, now seen corresponding path program 9 times [2024-06-27 22:08:52,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:52,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019127393] [2024-06-27 22:08:52,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:52,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:52,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:55,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:55,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:55,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019127393] [2024-06-27 22:08:55,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019127393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:55,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:55,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:08:55,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883215572] [2024-06-27 22:08:55,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:55,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:08:55,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:55,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:08:55,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:08:55,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:08:55,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 542 transitions, 8268 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:55,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:55,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:08:55,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:57,967 INFO L124 PetriNetUnfolderBase]: 6550/10478 cut-off events. [2024-06-27 22:08:57,967 INFO L125 PetriNetUnfolderBase]: For 426493/426510 co-relation queries the response was YES. [2024-06-27 22:08:58,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80085 conditions, 10478 events. 6550/10478 cut-off events. For 426493/426510 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 67269 event pairs, 1792 based on Foata normal form. 14/10263 useless extension candidates. Maximal degree in co-relation 79980. Up to 8546 conditions per place. [2024-06-27 22:08:58,102 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 380 selfloop transitions, 242 changer transitions 0/633 dead transitions. [2024-06-27 22:08:58,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 633 transitions, 10636 flow [2024-06-27 22:08:58,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:08:58,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:08:58,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-06-27 22:08:58,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5215419501133787 [2024-06-27 22:08:58,104 INFO L175 Difference]: Start difference. First operand has 240 places, 542 transitions, 8268 flow. Second operand 9 states and 230 transitions. [2024-06-27 22:08:58,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 633 transitions, 10636 flow [2024-06-27 22:08:58,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 633 transitions, 10424 flow, removed 96 selfloop flow, removed 3 redundant places. [2024-06-27 22:08:58,788 INFO L231 Difference]: Finished difference. Result has 247 places, 592 transitions, 9358 flow [2024-06-27 22:08:58,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=8064, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9358, PETRI_PLACES=247, PETRI_TRANSITIONS=592} [2024-06-27 22:08:58,789 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 192 predicate places. [2024-06-27 22:08:58,789 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 592 transitions, 9358 flow [2024-06-27 22:08:58,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:58,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:58,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:58,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 22:08:58,789 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:08:58,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:58,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1312574126, now seen corresponding path program 10 times [2024-06-27 22:08:58,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:58,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806027895] [2024-06-27 22:08:58,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:58,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:58,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:01,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:09:01,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:01,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806027895] [2024-06-27 22:09:01,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806027895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:01,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:01,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:09:01,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098953985] [2024-06-27 22:09:01,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:01,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:09:01,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:01,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:09:01,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:09:01,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 22:09:01,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 592 transitions, 9358 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:01,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:01,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 22:09:01,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:04,366 INFO L124 PetriNetUnfolderBase]: 6287/10226 cut-off events. [2024-06-27 22:09:04,367 INFO L125 PetriNetUnfolderBase]: For 443766/443783 co-relation queries the response was YES. [2024-06-27 22:09:04,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79848 conditions, 10226 events. 6287/10226 cut-off events. For 443766/443783 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 67124 event pairs, 1591 based on Foata normal form. 16/10009 useless extension candidates. Maximal degree in co-relation 79739. Up to 8204 conditions per place. [2024-06-27 22:09:04,507 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 410 selfloop transitions, 181 changer transitions 0/645 dead transitions. [2024-06-27 22:09:04,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 645 transitions, 11234 flow [2024-06-27 22:09:04,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:09:04,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:09:04,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-27 22:09:04,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-06-27 22:09:04,509 INFO L175 Difference]: Start difference. First operand has 247 places, 592 transitions, 9358 flow. Second operand 8 states and 210 transitions. [2024-06-27 22:09:04,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 645 transitions, 11234 flow [2024-06-27 22:09:05,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 645 transitions, 10888 flow, removed 140 selfloop flow, removed 3 redundant places. [2024-06-27 22:09:05,409 INFO L231 Difference]: Finished difference. Result has 254 places, 601 transitions, 9817 flow [2024-06-27 22:09:05,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=9012, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9817, PETRI_PLACES=254, PETRI_TRANSITIONS=601} [2024-06-27 22:09:05,410 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 199 predicate places. [2024-06-27 22:09:05,410 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 601 transitions, 9817 flow [2024-06-27 22:09:05,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:05,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:05,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:05,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 22:09:05,410 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:09:05,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:05,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1312573971, now seen corresponding path program 10 times [2024-06-27 22:09:05,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:05,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826458507] [2024-06-27 22:09:05,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:05,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:05,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:07,663 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 22:09:07,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:07,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826458507] [2024-06-27 22:09:07,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826458507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:07,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:07,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:09:07,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841825842] [2024-06-27 22:09:07,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:07,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:09:07,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:07,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:09:07,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:09:07,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:09:07,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 601 transitions, 9817 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:07,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:07,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:09:07,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:10,664 INFO L124 PetriNetUnfolderBase]: 6545/10475 cut-off events. [2024-06-27 22:09:10,664 INFO L125 PetriNetUnfolderBase]: For 474221/474238 co-relation queries the response was YES. [2024-06-27 22:09:10,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84056 conditions, 10475 events. 6545/10475 cut-off events. For 474221/474238 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 67291 event pairs, 1792 based on Foata normal form. 14/10259 useless extension candidates. Maximal degree in co-relation 83943. Up to 8541 conditions per place. [2024-06-27 22:09:10,890 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 395 selfloop transitions, 234 changer transitions 0/640 dead transitions. [2024-06-27 22:09:10,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 640 transitions, 11371 flow [2024-06-27 22:09:10,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:09:10,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:09:10,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-27 22:09:10,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5192743764172335 [2024-06-27 22:09:10,892 INFO L175 Difference]: Start difference. First operand has 254 places, 601 transitions, 9817 flow. Second operand 9 states and 229 transitions. [2024-06-27 22:09:10,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 640 transitions, 11371 flow [2024-06-27 22:09:11,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 640 transitions, 11018 flow, removed 128 selfloop flow, removed 4 redundant places. [2024-06-27 22:09:11,916 INFO L231 Difference]: Finished difference. Result has 259 places, 601 transitions, 9945 flow [2024-06-27 22:09:11,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=9464, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9945, PETRI_PLACES=259, PETRI_TRANSITIONS=601} [2024-06-27 22:09:11,917 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 204 predicate places. [2024-06-27 22:09:11,917 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 601 transitions, 9945 flow [2024-06-27 22:09:11,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:11,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:11,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:11,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 22:09:11,918 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:09:11,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:11,918 INFO L85 PathProgramCache]: Analyzing trace with hash -344650511, now seen corresponding path program 1 times [2024-06-27 22:09:11,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:11,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781458998] [2024-06-27 22:09:11,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:11,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:11,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:14,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:09:14,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:14,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781458998] [2024-06-27 22:09:14,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781458998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:14,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:14,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:09:14,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283999687] [2024-06-27 22:09:14,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:14,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:09:14,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:14,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:09:14,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:09:14,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 22:09:14,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 601 transitions, 9945 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:14,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:14,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 22:09:14,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:17,596 INFO L124 PetriNetUnfolderBase]: 7488/11963 cut-off events. [2024-06-27 22:09:17,596 INFO L125 PetriNetUnfolderBase]: For 532327/532327 co-relation queries the response was YES. [2024-06-27 22:09:17,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93226 conditions, 11963 events. 7488/11963 cut-off events. For 532327/532327 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 77504 event pairs, 2203 based on Foata normal form. 4/11697 useless extension candidates. Maximal degree in co-relation 93111. Up to 10331 conditions per place. [2024-06-27 22:09:17,753 INFO L140 encePairwiseOnDemand]: 32/49 looper letters, 619 selfloop transitions, 47 changer transitions 0/676 dead transitions. [2024-06-27 22:09:17,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 676 transitions, 12159 flow [2024-06-27 22:09:17,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:09:17,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:09:17,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 219 transitions. [2024-06-27 22:09:17,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965986394557823 [2024-06-27 22:09:17,755 INFO L175 Difference]: Start difference. First operand has 259 places, 601 transitions, 9945 flow. Second operand 9 states and 219 transitions. [2024-06-27 22:09:17,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 676 transitions, 12159 flow [2024-06-27 22:09:18,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 676 transitions, 11610 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 22:09:18,563 INFO L231 Difference]: Finished difference. Result has 263 places, 627 transitions, 10082 flow [2024-06-27 22:09:18,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=9396, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=562, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10082, PETRI_PLACES=263, PETRI_TRANSITIONS=627} [2024-06-27 22:09:18,564 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 208 predicate places. [2024-06-27 22:09:18,564 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 627 transitions, 10082 flow [2024-06-27 22:09:18,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:18,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:18,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:18,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 22:09:18,565 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:09:18,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:18,565 INFO L85 PathProgramCache]: Analyzing trace with hash -20635516, now seen corresponding path program 1 times [2024-06-27 22:09:18,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:18,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222631227] [2024-06-27 22:09:18,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:18,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:18,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:20,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:09:20,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:20,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222631227] [2024-06-27 22:09:20,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222631227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:20,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:20,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:09:20,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19881324] [2024-06-27 22:09:20,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:20,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:09:20,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:20,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:09:20,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:09:20,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:09:20,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 627 transitions, 10082 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:20,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:20,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:09:20,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:23,781 INFO L124 PetriNetUnfolderBase]: 7303/11768 cut-off events. [2024-06-27 22:09:23,781 INFO L125 PetriNetUnfolderBase]: For 567040/567124 co-relation queries the response was YES. [2024-06-27 22:09:23,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92534 conditions, 11768 events. 7303/11768 cut-off events. For 567040/567124 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 77400 event pairs, 2316 based on Foata normal form. 53/11540 useless extension candidates. Maximal degree in co-relation 92414. Up to 9994 conditions per place. [2024-06-27 22:09:23,931 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 530 selfloop transitions, 16 changer transitions 0/645 dead transitions. [2024-06-27 22:09:23,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 645 transitions, 11358 flow [2024-06-27 22:09:23,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:09:23,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:09:23,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-27 22:09:23,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47278911564625853 [2024-06-27 22:09:23,933 INFO L175 Difference]: Start difference. First operand has 263 places, 627 transitions, 10082 flow. Second operand 6 states and 139 transitions. [2024-06-27 22:09:23,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 645 transitions, 11358 flow [2024-06-27 22:09:24,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 645 transitions, 11039 flow, removed 145 selfloop flow, removed 4 redundant places. [2024-06-27 22:09:24,923 INFO L231 Difference]: Finished difference. Result has 265 places, 631 transitions, 9876 flow [2024-06-27 22:09:24,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=9765, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=611, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=9876, PETRI_PLACES=265, PETRI_TRANSITIONS=631} [2024-06-27 22:09:24,924 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 210 predicate places. [2024-06-27 22:09:24,924 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 631 transitions, 9876 flow [2024-06-27 22:09:24,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:24,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:24,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:24,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 22:09:24,925 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:09:24,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:24,925 INFO L85 PathProgramCache]: Analyzing trace with hash -2122426069, now seen corresponding path program 1 times [2024-06-27 22:09:24,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:24,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849967880] [2024-06-27 22:09:24,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:24,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:24,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:27,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:09:27,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:27,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849967880] [2024-06-27 22:09:27,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849967880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:27,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:27,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:09:27,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44378656] [2024-06-27 22:09:27,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:27,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:09:27,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:27,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:09:27,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:09:27,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:09:27,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 631 transitions, 9876 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:27,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:27,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:09:27,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:30,928 INFO L124 PetriNetUnfolderBase]: 7347/11792 cut-off events. [2024-06-27 22:09:30,928 INFO L125 PetriNetUnfolderBase]: For 614030/614092 co-relation queries the response was YES. [2024-06-27 22:09:31,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96569 conditions, 11792 events. 7347/11792 cut-off events. For 614030/614092 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 77095 event pairs, 1943 based on Foata normal form. 12/11492 useless extension candidates. Maximal degree in co-relation 96446. Up to 9720 conditions per place. [2024-06-27 22:09:31,081 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 531 selfloop transitions, 125 changer transitions 0/710 dead transitions. [2024-06-27 22:09:31,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 710 transitions, 12189 flow [2024-06-27 22:09:31,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:09:31,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:09:31,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 253 transitions. [2024-06-27 22:09:31,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163265306122449 [2024-06-27 22:09:31,082 INFO L175 Difference]: Start difference. First operand has 265 places, 631 transitions, 9876 flow. Second operand 10 states and 253 transitions. [2024-06-27 22:09:31,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 710 transitions, 12189 flow [2024-06-27 22:09:31,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 710 transitions, 12142 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-27 22:09:31,867 INFO L231 Difference]: Finished difference. Result has 273 places, 642 transitions, 10442 flow [2024-06-27 22:09:31,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=9829, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=631, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10442, PETRI_PLACES=273, PETRI_TRANSITIONS=642} [2024-06-27 22:09:31,868 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 218 predicate places. [2024-06-27 22:09:31,868 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 642 transitions, 10442 flow [2024-06-27 22:09:31,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:31,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:31,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:31,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 22:09:31,869 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:09:31,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:31,869 INFO L85 PathProgramCache]: Analyzing trace with hash -2008861785, now seen corresponding path program 1 times [2024-06-27 22:09:31,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:31,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72197641] [2024-06-27 22:09:31,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:31,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:31,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:34,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:09:34,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:34,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72197641] [2024-06-27 22:09:34,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72197641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:34,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:34,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:09:34,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626111663] [2024-06-27 22:09:34,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:34,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:09:34,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:34,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:09:34,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:09:34,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:09:34,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 642 transitions, 10442 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:34,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:34,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:09:34,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:37,937 INFO L124 PetriNetUnfolderBase]: 7440/11932 cut-off events. [2024-06-27 22:09:37,937 INFO L125 PetriNetUnfolderBase]: For 622469/622478 co-relation queries the response was YES. [2024-06-27 22:09:38,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99886 conditions, 11932 events. 7440/11932 cut-off events. For 622469/622478 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 78364 event pairs, 1857 based on Foata normal form. 2/11621 useless extension candidates. Maximal degree in co-relation 99759. Up to 10010 conditions per place. [2024-06-27 22:09:38,097 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 569 selfloop transitions, 143 changer transitions 0/724 dead transitions. [2024-06-27 22:09:38,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 724 transitions, 12974 flow [2024-06-27 22:09:38,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:09:38,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:09:38,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 266 transitions. [2024-06-27 22:09:38,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4935064935064935 [2024-06-27 22:09:38,098 INFO L175 Difference]: Start difference. First operand has 273 places, 642 transitions, 10442 flow. Second operand 11 states and 266 transitions. [2024-06-27 22:09:38,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 724 transitions, 12974 flow [2024-06-27 22:09:39,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 724 transitions, 12791 flow, removed 52 selfloop flow, removed 5 redundant places. [2024-06-27 22:09:39,036 INFO L231 Difference]: Finished difference. Result has 281 places, 656 transitions, 11014 flow [2024-06-27 22:09:39,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=10259, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=642, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11014, PETRI_PLACES=281, PETRI_TRANSITIONS=656} [2024-06-27 22:09:39,037 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 226 predicate places. [2024-06-27 22:09:39,037 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 656 transitions, 11014 flow [2024-06-27 22:09:39,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:39,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:39,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:39,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 22:09:39,038 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:09:39,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:39,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1205972275, now seen corresponding path program 2 times [2024-06-27 22:09:39,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:39,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082457069] [2024-06-27 22:09:39,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:39,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:39,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:41,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:09:41,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:41,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082457069] [2024-06-27 22:09:41,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082457069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:41,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:41,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:09:41,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035231675] [2024-06-27 22:09:41,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:41,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:09:41,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:41,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:09:41,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:09:41,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 22:09:41,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 656 transitions, 11014 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:41,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:41,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 22:09:41,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:45,095 INFO L124 PetriNetUnfolderBase]: 7199/11705 cut-off events. [2024-06-27 22:09:45,095 INFO L125 PetriNetUnfolderBase]: For 645605/645656 co-relation queries the response was YES. [2024-06-27 22:09:45,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99322 conditions, 11705 events. 7199/11705 cut-off events. For 645605/645656 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 78346 event pairs, 1785 based on Foata normal form. 12/11401 useless extension candidates. Maximal degree in co-relation 99191. Up to 9622 conditions per place. [2024-06-27 22:09:45,590 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 538 selfloop transitions, 126 changer transitions 0/723 dead transitions. [2024-06-27 22:09:45,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 723 transitions, 12955 flow [2024-06-27 22:09:45,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:09:45,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:09:45,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 258 transitions. [2024-06-27 22:09:45,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5265306122448979 [2024-06-27 22:09:45,598 INFO L175 Difference]: Start difference. First operand has 281 places, 656 transitions, 11014 flow. Second operand 10 states and 258 transitions. [2024-06-27 22:09:45,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 723 transitions, 12955 flow [2024-06-27 22:09:46,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 723 transitions, 12772 flow, removed 68 selfloop flow, removed 5 redundant places. [2024-06-27 22:09:46,605 INFO L231 Difference]: Finished difference. Result has 286 places, 658 transitions, 11154 flow [2024-06-27 22:09:46,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=10831, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=656, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11154, PETRI_PLACES=286, PETRI_TRANSITIONS=658} [2024-06-27 22:09:46,606 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 231 predicate places. [2024-06-27 22:09:46,606 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 658 transitions, 11154 flow [2024-06-27 22:09:46,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:46,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:46,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:46,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 22:09:46,607 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:09:46,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:46,608 INFO L85 PathProgramCache]: Analyzing trace with hash -2119569109, now seen corresponding path program 3 times [2024-06-27 22:09:46,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:46,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381970875] [2024-06-27 22:09:46,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:46,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:46,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:49,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:09:49,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:49,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381970875] [2024-06-27 22:09:49,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381970875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:49,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:49,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:09:49,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453777905] [2024-06-27 22:09:49,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:49,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:09:49,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:49,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:09:49,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:09:49,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 22:09:49,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 658 transitions, 11154 flow. Second operand has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:49,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:49,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 22:09:49,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:52,769 INFO L124 PetriNetUnfolderBase]: 7212/11802 cut-off events. [2024-06-27 22:09:52,769 INFO L125 PetriNetUnfolderBase]: For 655833/655861 co-relation queries the response was YES. [2024-06-27 22:09:52,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99806 conditions, 11802 events. 7212/11802 cut-off events. For 655833/655861 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 79704 event pairs, 1859 based on Foata normal form. 12/11490 useless extension candidates. Maximal degree in co-relation 99673. Up to 9728 conditions per place. [2024-06-27 22:09:52,932 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 559 selfloop transitions, 90 changer transitions 0/708 dead transitions. [2024-06-27 22:09:52,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 708 transitions, 12865 flow [2024-06-27 22:09:52,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:09:52,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:09:52,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 245 transitions. [2024-06-27 22:09:52,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:09:52,934 INFO L175 Difference]: Start difference. First operand has 286 places, 658 transitions, 11154 flow. Second operand 10 states and 245 transitions. [2024-06-27 22:09:52,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 708 transitions, 12865 flow [2024-06-27 22:09:53,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 708 transitions, 12552 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-27 22:09:53,876 INFO L231 Difference]: Finished difference. Result has 288 places, 658 transitions, 11034 flow [2024-06-27 22:09:53,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=10841, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=658, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=568, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11034, PETRI_PLACES=288, PETRI_TRANSITIONS=658} [2024-06-27 22:09:53,877 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 233 predicate places. [2024-06-27 22:09:53,877 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 658 transitions, 11034 flow [2024-06-27 22:09:53,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:53,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:53,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:53,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 22:09:53,878 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:09:53,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:53,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1203170991, now seen corresponding path program 2 times [2024-06-27 22:09:53,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:53,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051550072] [2024-06-27 22:09:53,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:53,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:53,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:56,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:09:56,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:56,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051550072] [2024-06-27 22:09:56,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051550072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:56,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:56,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:09:56,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418454980] [2024-06-27 22:09:56,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:56,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:09:56,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:56,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:09:56,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:09:56,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:09:56,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 658 transitions, 11034 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:56,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:56,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:09:56,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:00,318 INFO L124 PetriNetUnfolderBase]: 7516/12146 cut-off events. [2024-06-27 22:10:00,319 INFO L125 PetriNetUnfolderBase]: For 673607/673616 co-relation queries the response was YES. [2024-06-27 22:10:00,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102862 conditions, 12146 events. 7516/12146 cut-off events. For 673607/673616 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 80775 event pairs, 1848 based on Foata normal form. 2/11819 useless extension candidates. Maximal degree in co-relation 102728. Up to 10308 conditions per place. [2024-06-27 22:10:00,506 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 595 selfloop transitions, 103 changer transitions 0/710 dead transitions. [2024-06-27 22:10:00,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 710 transitions, 12965 flow [2024-06-27 22:10:00,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:10:00,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:10:00,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 236 transitions. [2024-06-27 22:10:00,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4816326530612245 [2024-06-27 22:10:00,513 INFO L175 Difference]: Start difference. First operand has 288 places, 658 transitions, 11034 flow. Second operand 10 states and 236 transitions. [2024-06-27 22:10:00,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 710 transitions, 12965 flow [2024-06-27 22:10:01,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 710 transitions, 12820 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 22:10:01,823 INFO L231 Difference]: Finished difference. Result has 291 places, 664 transitions, 11302 flow [2024-06-27 22:10:01,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=10889, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=658, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=555, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11302, PETRI_PLACES=291, PETRI_TRANSITIONS=664} [2024-06-27 22:10:01,832 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 236 predicate places. [2024-06-27 22:10:01,832 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 664 transitions, 11302 flow [2024-06-27 22:10:01,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:01,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:01,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:01,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 22:10:01,833 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:10:01,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:01,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1203175641, now seen corresponding path program 3 times [2024-06-27 22:10:01,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:01,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173537580] [2024-06-27 22:10:01,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:01,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:01,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:04,456 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 22:10:04,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:04,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173537580] [2024-06-27 22:10:04,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173537580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:04,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:04,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:10:04,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482383844] [2024-06-27 22:10:04,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:04,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:10:04,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:04,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:10:04,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:10:04,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:10:04,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 664 transitions, 11302 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:04,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:04,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:10:04,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:07,966 INFO L124 PetriNetUnfolderBase]: 7511/12121 cut-off events. [2024-06-27 22:10:07,966 INFO L125 PetriNetUnfolderBase]: For 694450/694459 co-relation queries the response was YES. [2024-06-27 22:10:08,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103915 conditions, 12121 events. 7511/12121 cut-off events. For 694450/694459 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 80403 event pairs, 1936 based on Foata normal form. 2/11799 useless extension candidates. Maximal degree in co-relation 103780. Up to 10241 conditions per place. [2024-06-27 22:10:08,151 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 589 selfloop transitions, 114 changer transitions 0/715 dead transitions. [2024-06-27 22:10:08,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 715 transitions, 13156 flow [2024-06-27 22:10:08,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:10:08,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:10:08,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 225 transitions. [2024-06-27 22:10:08,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2024-06-27 22:10:08,153 INFO L175 Difference]: Start difference. First operand has 291 places, 664 transitions, 11302 flow. Second operand 9 states and 225 transitions. [2024-06-27 22:10:08,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 715 transitions, 13156 flow [2024-06-27 22:10:09,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 715 transitions, 12800 flow, removed 83 selfloop flow, removed 8 redundant places. [2024-06-27 22:10:09,752 INFO L231 Difference]: Finished difference. Result has 292 places, 664 transitions, 11188 flow [2024-06-27 22:10:09,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=10946, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=550, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11188, PETRI_PLACES=292, PETRI_TRANSITIONS=664} [2024-06-27 22:10:09,753 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 237 predicate places. [2024-06-27 22:10:09,753 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 664 transitions, 11188 flow [2024-06-27 22:10:09,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:09,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:09,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:09,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 22:10:09,754 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:10:09,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:09,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1203170805, now seen corresponding path program 1 times [2024-06-27 22:10:09,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:09,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233053724] [2024-06-27 22:10:09,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:09,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:09,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:11,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:10:11,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:11,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233053724] [2024-06-27 22:10:11,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233053724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:11,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:11,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:10:11,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638847280] [2024-06-27 22:10:11,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:11,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:10:11,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:11,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:10:11,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:10:11,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:10:11,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 664 transitions, 11188 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:11,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:11,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:10:11,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:15,388 INFO L124 PetriNetUnfolderBase]: 7570/12302 cut-off events. [2024-06-27 22:10:15,389 INFO L125 PetriNetUnfolderBase]: For 723709/723718 co-relation queries the response was YES. [2024-06-27 22:10:15,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105186 conditions, 12302 events. 7570/12302 cut-off events. For 723709/723718 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 82638 event pairs, 1884 based on Foata normal form. 4/11941 useless extension candidates. Maximal degree in co-relation 105050. Up to 10382 conditions per place. [2024-06-27 22:10:15,552 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 615 selfloop transitions, 86 changer transitions 0/713 dead transitions. [2024-06-27 22:10:15,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 713 transitions, 13052 flow [2024-06-27 22:10:15,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:10:15,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:10:15,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-27 22:10:15,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5056689342403629 [2024-06-27 22:10:15,554 INFO L175 Difference]: Start difference. First operand has 292 places, 664 transitions, 11188 flow. Second operand 9 states and 223 transitions. [2024-06-27 22:10:15,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 713 transitions, 13052 flow [2024-06-27 22:10:16,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 713 transitions, 12794 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 22:10:16,896 INFO L231 Difference]: Finished difference. Result has 294 places, 667 transitions, 11220 flow [2024-06-27 22:10:16,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=10930, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=578, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11220, PETRI_PLACES=294, PETRI_TRANSITIONS=667} [2024-06-27 22:10:16,897 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 239 predicate places. [2024-06-27 22:10:16,897 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 667 transitions, 11220 flow [2024-06-27 22:10:16,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:16,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:16,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:16,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 22:10:16,898 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:10:16,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:16,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1087706841, now seen corresponding path program 4 times [2024-06-27 22:10:16,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:16,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752804986] [2024-06-27 22:10:16,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:16,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:16,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:19,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:10:19,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:19,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752804986] [2024-06-27 22:10:19,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752804986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:19,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:19,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:10:19,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191527938] [2024-06-27 22:10:19,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:19,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:10:19,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:19,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:10:19,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:10:19,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:10:19,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 667 transitions, 11220 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:19,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:19,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:10:19,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:23,234 INFO L124 PetriNetUnfolderBase]: 7612/12294 cut-off events. [2024-06-27 22:10:23,234 INFO L125 PetriNetUnfolderBase]: For 750603/750614 co-relation queries the response was YES. [2024-06-27 22:10:23,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107142 conditions, 12294 events. 7612/12294 cut-off events. For 750603/750614 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 81856 event pairs, 1840 based on Foata normal form. 2/11959 useless extension candidates. Maximal degree in co-relation 107005. Up to 10031 conditions per place. [2024-06-27 22:10:23,416 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 509 selfloop transitions, 226 changer transitions 0/747 dead transitions. [2024-06-27 22:10:23,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 747 transitions, 13875 flow [2024-06-27 22:10:23,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:10:23,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:10:23,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 242 transitions. [2024-06-27 22:10:23,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49387755102040815 [2024-06-27 22:10:23,417 INFO L175 Difference]: Start difference. First operand has 294 places, 667 transitions, 11220 flow. Second operand 10 states and 242 transitions. [2024-06-27 22:10:23,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 747 transitions, 13875 flow [2024-06-27 22:10:24,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 747 transitions, 13639 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-27 22:10:24,920 INFO L231 Difference]: Finished difference. Result has 298 places, 680 transitions, 12012 flow [2024-06-27 22:10:24,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=10984, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=667, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=216, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12012, PETRI_PLACES=298, PETRI_TRANSITIONS=680} [2024-06-27 22:10:24,921 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 243 predicate places. [2024-06-27 22:10:24,921 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 680 transitions, 12012 flow [2024-06-27 22:10:24,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:24,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:24,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:24,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 22:10:24,922 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:10:24,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:24,922 INFO L85 PathProgramCache]: Analyzing trace with hash -2004099999, now seen corresponding path program 2 times [2024-06-27 22:10:24,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:24,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739841135] [2024-06-27 22:10:24,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:24,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:24,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:27,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:10:27,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:27,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739841135] [2024-06-27 22:10:27,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739841135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:27,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:27,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:10:27,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372879655] [2024-06-27 22:10:27,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:27,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:10:27,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:27,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:10:27,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:10:27,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:10:27,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 680 transitions, 12012 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:27,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:27,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:10:27,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:30,645 INFO L124 PetriNetUnfolderBase]: 7878/12806 cut-off events. [2024-06-27 22:10:30,646 INFO L125 PetriNetUnfolderBase]: For 849716/849720 co-relation queries the response was YES. [2024-06-27 22:10:30,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115351 conditions, 12806 events. 7878/12806 cut-off events. For 849716/849720 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 86659 event pairs, 1924 based on Foata normal form. 4/12429 useless extension candidates. Maximal degree in co-relation 115212. Up to 9768 conditions per place. [2024-06-27 22:10:30,836 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 566 selfloop transitions, 203 changer transitions 0/781 dead transitions. [2024-06-27 22:10:30,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 781 transitions, 15575 flow [2024-06-27 22:10:30,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:10:30,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:10:30,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 242 transitions. [2024-06-27 22:10:30,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5487528344671202 [2024-06-27 22:10:30,838 INFO L175 Difference]: Start difference. First operand has 298 places, 680 transitions, 12012 flow. Second operand 9 states and 242 transitions. [2024-06-27 22:10:30,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 781 transitions, 15575 flow [2024-06-27 22:10:32,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 781 transitions, 15181 flow, removed 150 selfloop flow, removed 5 redundant places. [2024-06-27 22:10:32,498 INFO L231 Difference]: Finished difference. Result has 302 places, 692 transitions, 12473 flow [2024-06-27 22:10:32,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=11618, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=680, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12473, PETRI_PLACES=302, PETRI_TRANSITIONS=692} [2024-06-27 22:10:32,499 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 247 predicate places. [2024-06-27 22:10:32,499 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 692 transitions, 12473 flow [2024-06-27 22:10:32,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:32,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:32,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:32,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 22:10:32,500 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:10:32,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:32,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1087884595, now seen corresponding path program 4 times [2024-06-27 22:10:32,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:32,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260654975] [2024-06-27 22:10:32,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:32,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:32,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat