./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix002.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/mix002.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/mix002.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix002.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 22:00:48,124 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:00:48,181 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:00:48,189 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:00:48,189 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:00:48,234 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:00:48,235 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:00:48,235 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:00:48,236 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:00:48,236 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:00:48,236 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:00:48,237 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:00:48,237 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:00:48,237 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:00:48,238 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:00:48,238 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:00:48,252 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:00:48,252 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:00:48,253 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:00:48,253 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:00:48,253 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:00:48,253 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:00:48,254 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:00:48,254 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:00:48,254 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:00:48,254 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:00:48,254 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:00:48,255 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:00:48,255 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:00:48,255 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:00:48,255 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:00:48,255 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:00:48,255 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:00:48,256 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:00:48,256 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:00:48,256 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:00:48,256 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:00:48,256 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:00:48,256 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:00:48,256 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:00:48,257 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:00:48,257 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:00:48,257 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:00:48,257 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:00:48,447 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:00:48,465 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:00:48,466 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:00:48,467 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:00:48,468 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:00:48,468 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix002.oepc.i [2024-06-27 22:00:49,535 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:00:49,798 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:00:49,801 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix002.oepc.i [2024-06-27 22:00:49,819 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eeb12eefa/2028c1e91a354d7baa926ac0fc00479c/FLAG67c659a69 [2024-06-27 22:00:49,847 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eeb12eefa/2028c1e91a354d7baa926ac0fc00479c [2024-06-27 22:00:49,850 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:00:49,850 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:00:49,851 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix002.oepc.yml/witness.yml [2024-06-27 22:00:49,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:00:49,938 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:00:49,940 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:00:49,940 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:00:49,944 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:00:49,944 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:00:49" (1/2) ... [2024-06-27 22:00:49,946 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@448a38ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:00:49, skipping insertion in model container [2024-06-27 22:00:49,946 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:00:49" (1/2) ... [2024-06-27 22:00:49,947 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5b7e8a09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:00:49, skipping insertion in model container [2024-06-27 22:00:49,948 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:00:49" (2/2) ... [2024-06-27 22:00:49,949 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@448a38ce and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:00:49, skipping insertion in model container [2024-06-27 22:00:49,949 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:00:49" (2/2) ... [2024-06-27 22:00:49,950 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:00:49,974 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:00:49,976 INFO L97 edCorrectnessWitness]: Location invariant before [L858-L858] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )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$w_buff0_used >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )a$w_buff0_used >= 0LL) && (long long )__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 22:00:49,976 INFO L97 edCorrectnessWitness]: Location invariant before [L861-L861] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )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$w_buff0_used >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )a$w_buff0_used >= 0LL) && (long long )__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 22:00:49,976 INFO L97 edCorrectnessWitness]: Location invariant before [L860-L860] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )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$w_buff0_used >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )a$w_buff0_used >= 0LL) && (long long )__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 22:00:49,977 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:00:49,977 INFO L106 edCorrectnessWitness]: ghost_update [L856-L856] multithreaded = 1; [2024-06-27 22:00:50,014 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:00:50,169 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/mix002.oepc.i[945,958] [2024-06-27 22:00:50,333 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:00:50,353 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:00:50,382 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/mix002.oepc.i[945,958] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:00:50,601 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:00:50,640 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:00:50,641 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:00:50 WrapperNode [2024-06-27 22:00:50,641 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:00:50,642 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:00:50,642 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:00:50,642 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:00:50,648 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:00:50" (1/1) ... [2024-06-27 22:00:50,684 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:00:50" (1/1) ... [2024-06-27 22:00:50,722 INFO L138 Inliner]: procedures = 175, calls = 50, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 132 [2024-06-27 22:00:50,724 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:00:50,725 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:00:50,726 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:00:50,726 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:00:50,734 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:00:50" (1/1) ... [2024-06-27 22:00:50,735 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:00:50" (1/1) ... [2024-06-27 22:00:50,754 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:00:50" (1/1) ... [2024-06-27 22:00:50,779 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 22:00:50,780 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:00:50" (1/1) ... [2024-06-27 22:00:50,780 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:00:50" (1/1) ... [2024-06-27 22:00:50,796 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:00:50" (1/1) ... [2024-06-27 22:00:50,806 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:00:50" (1/1) ... [2024-06-27 22:00:50,818 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:00:50" (1/1) ... [2024-06-27 22:00:50,822 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:00:50" (1/1) ... [2024-06-27 22:00:50,836 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:00:50,838 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:00:50,838 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:00:50,838 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:00:50,839 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:00:50" (1/1) ... [2024-06-27 22:00:50,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:00:50,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:00:50,866 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 22:00:50,897 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 22:00:50,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:00:50,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:00:50,911 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:00:50,911 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:00:50,911 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:00:50,912 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:00:50,912 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 22:00:50,912 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 22:00:50,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:00:50,912 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:00:50,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:00:50,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:00:50,914 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 22:00:51,041 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:00:51,043 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:00:51,579 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:00:51,579 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:00:51,732 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:00:51,733 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:00:51,733 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:00:51 BoogieIcfgContainer [2024-06-27 22:00:51,734 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:00:51,736 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:00:51,736 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:00:51,738 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:00:51,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:00:49" (1/4) ... [2024-06-27 22:00:51,739 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@237706a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:00:51, skipping insertion in model container [2024-06-27 22:00:51,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:00:49" (2/4) ... [2024-06-27 22:00:51,740 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@237706a8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:00:51, skipping insertion in model container [2024-06-27 22:00:51,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:00:50" (3/4) ... [2024-06-27 22:00:51,742 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@237706a8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:00:51, skipping insertion in model container [2024-06-27 22:00:51,742 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:00:51" (4/4) ... [2024-06-27 22:00:51,743 INFO L112 eAbstractionObserver]: Analyzing ICFG mix002.oepc.i [2024-06-27 22:00:51,756 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:00:51,757 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 22:00:51,757 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:00:51,817 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:00:51,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 50 transitions, 112 flow [2024-06-27 22:00:51,883 INFO L124 PetriNetUnfolderBase]: 1/47 cut-off events. [2024-06-27 22:00:51,883 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:00:51,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 47 events. 1/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 87 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2024-06-27 22:00:51,886 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 50 transitions, 112 flow [2024-06-27 22:00:51,890 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 47 transitions, 103 flow [2024-06-27 22:00:51,902 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:00:51,910 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;@5213b45a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:00:51,910 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 22:00:51,914 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:00:51,915 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 22:00:51,915 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:00:51,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:00:51,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:00:51,918 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 22:00:51,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:00:51,923 INFO L85 PathProgramCache]: Analyzing trace with hash 349864306, now seen corresponding path program 1 times [2024-06-27 22:00:51,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:00:51,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305356132] [2024-06-27 22:00:51,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:00:51,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:00:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:00:53,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:00:53,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:00:53,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305356132] [2024-06-27 22:00:53,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305356132] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:00:53,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:00:53,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:00:53,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918166103] [2024-06-27 22:00:53,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:00:53,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:00:53,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:00:53,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:00:53,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:00:53,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2024-06-27 22:00:53,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 103 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 22:00:53,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:00:53,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2024-06-27 22:00:53,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:00:54,544 INFO L124 PetriNetUnfolderBase]: 4233/6989 cut-off events. [2024-06-27 22:00:54,544 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2024-06-27 22:00:54,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13176 conditions, 6989 events. 4233/6989 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 47659 event pairs, 3576 based on Foata normal form. 200/6672 useless extension candidates. Maximal degree in co-relation 13164. Up to 6076 conditions per place. [2024-06-27 22:00:54,581 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 42 selfloop transitions, 4 changer transitions 0/60 dead transitions. [2024-06-27 22:00:54,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 60 transitions, 227 flow [2024-06-27 22:00:54,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:00:54,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:00:54,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-06-27 22:00:54,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6866666666666666 [2024-06-27 22:00:54,594 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 103 flow. Second operand 3 states and 103 transitions. [2024-06-27 22:00:54,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 60 transitions, 227 flow [2024-06-27 22:00:54,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 60 transitions, 222 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:00:54,602 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 130 flow [2024-06-27 22:00:54,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2024-06-27 22:00:54,605 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2024-06-27 22:00:54,605 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 130 flow [2024-06-27 22:00:54,606 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 22:00:54,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:00:54,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:00:54,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:00:54,606 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 22:00:54,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:00:54,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1212430624, now seen corresponding path program 1 times [2024-06-27 22:00:54,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:00:54,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528930464] [2024-06-27 22:00:54,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:00:54,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:00:54,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:00:55,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:00:55,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:00:55,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528930464] [2024-06-27 22:00:55,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528930464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:00:55,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:00:55,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:00:55,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243272585] [2024-06-27 22:00:55,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:00:55,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:00:55,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:00:55,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:00:55,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:00:55,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2024-06-27 22:00:55,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 130 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 22:00:55,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:00:55,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2024-06-27 22:00:55,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:00:56,691 INFO L124 PetriNetUnfolderBase]: 4235/6989 cut-off events. [2024-06-27 22:00:56,691 INFO L125 PetriNetUnfolderBase]: For 946/950 co-relation queries the response was YES. [2024-06-27 22:00:56,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14564 conditions, 6989 events. 4235/6989 cut-off events. For 946/950 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 46901 event pairs, 2940 based on Foata normal form. 5/6527 useless extension candidates. Maximal degree in co-relation 14552. Up to 6061 conditions per place. [2024-06-27 22:00:56,718 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 52 selfloop transitions, 8 changer transitions 1/75 dead transitions. [2024-06-27 22:00:56,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 75 transitions, 325 flow [2024-06-27 22:00:56,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:00:56,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:00:56,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-06-27 22:00:56,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.645 [2024-06-27 22:00:56,720 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 130 flow. Second operand 4 states and 129 transitions. [2024-06-27 22:00:56,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 75 transitions, 325 flow [2024-06-27 22:00:56,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 75 transitions, 318 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:00:56,722 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 195 flow [2024-06-27 22:00:56,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=195, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2024-06-27 22:00:56,723 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 4 predicate places. [2024-06-27 22:00:56,723 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 195 flow [2024-06-27 22:00:56,723 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 22:00:56,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:00:56,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:00:56,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:00:56,724 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 22:00:56,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:00:56,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1069354635, now seen corresponding path program 1 times [2024-06-27 22:00:56,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:00:56,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765575850] [2024-06-27 22:00:56,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:00:56,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:00:56,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:00:57,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:00:57,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:00:57,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765575850] [2024-06-27 22:00:57,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765575850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:00:57,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:00:57,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:00:57,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346057608] [2024-06-27 22:00:57,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:00:57,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:00:57,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:00:57,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:00:57,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:00:57,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-06-27 22:00:57,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 195 flow. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:57,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:00:57,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-06-27 22:00:57,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:00:58,675 INFO L124 PetriNetUnfolderBase]: 4800/7895 cut-off events. [2024-06-27 22:00:58,676 INFO L125 PetriNetUnfolderBase]: For 3182/3194 co-relation queries the response was YES. [2024-06-27 22:00:58,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17961 conditions, 7895 events. 4800/7895 cut-off events. For 3182/3194 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 53360 event pairs, 3131 based on Foata normal form. 9/7415 useless extension candidates. Maximal degree in co-relation 17946. Up to 6837 conditions per place. [2024-06-27 22:00:58,716 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 63 selfloop transitions, 11 changer transitions 2/89 dead transitions. [2024-06-27 22:00:58,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 89 transitions, 437 flow [2024-06-27 22:00:58,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:00:58,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:00:58,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 156 transitions. [2024-06-27 22:00:58,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.624 [2024-06-27 22:00:58,721 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 195 flow. Second operand 5 states and 156 transitions. [2024-06-27 22:00:58,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 89 transitions, 437 flow [2024-06-27 22:00:58,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 89 transitions, 426 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-27 22:00:58,726 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 236 flow [2024-06-27 22:00:58,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=236, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2024-06-27 22:00:58,727 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 8 predicate places. [2024-06-27 22:00:58,727 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 236 flow [2024-06-27 22:00:58,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:58,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:00:58,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:00:58,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:00:58,728 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:00:58,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:00:58,729 INFO L85 PathProgramCache]: Analyzing trace with hash 988101359, now seen corresponding path program 1 times [2024-06-27 22:00:58,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:00:58,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984341323] [2024-06-27 22:00:58,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:00:58,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:00:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:01:00,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:01:00,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:01:00,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984341323] [2024-06-27 22:01:00,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984341323] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:01:00,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:01:00,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:01:00,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992947568] [2024-06-27 22:01:00,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:01:00,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:01:00,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:01:00,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:01:00,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:01:00,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-06-27 22:01:00,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 236 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 22:01:00,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:01:00,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-06-27 22:01:00,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:00,944 INFO L124 PetriNetUnfolderBase]: 4802/7905 cut-off events. [2024-06-27 22:01:00,945 INFO L125 PetriNetUnfolderBase]: For 5959/5971 co-relation queries the response was YES. [2024-06-27 22:01:00,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19226 conditions, 7905 events. 4802/7905 cut-off events. For 5959/5971 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 53729 event pairs, 3267 based on Foata normal form. 9/7425 useless extension candidates. Maximal degree in co-relation 19209. Up to 6816 conditions per place. [2024-06-27 22:01:00,985 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 73 selfloop transitions, 14 changer transitions 3/103 dead transitions. [2024-06-27 22:01:00,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 103 transitions, 538 flow [2024-06-27 22:01:00,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:01:00,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:01:00,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 186 transitions. [2024-06-27 22:01:00,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.62 [2024-06-27 22:01:00,987 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 236 flow. Second operand 6 states and 186 transitions. [2024-06-27 22:01:00,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 103 transitions, 538 flow [2024-06-27 22:01:00,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 103 transitions, 512 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 22:01:00,994 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 272 flow [2024-06-27 22:01:00,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=272, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2024-06-27 22:01:00,995 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 11 predicate places. [2024-06-27 22:01:00,995 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 272 flow [2024-06-27 22:01:00,995 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 22:01:00,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:00,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:00,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:01:00,996 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 22:01:00,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:00,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1152565548, now seen corresponding path program 1 times [2024-06-27 22:01:00,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:00,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797948688] [2024-06-27 22:01:00,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:00,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:01:02,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:01:02,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:01:02,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797948688] [2024-06-27 22:01:02,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797948688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:01:02,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:01:02,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:01:02,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749315026] [2024-06-27 22:01:02,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:01:02,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:01:02,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:01:02,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:01:02,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:01:02,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-27 22:01:02,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 272 flow. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:02,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:01:02,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-27 22:01:02,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:03,213 INFO L124 PetriNetUnfolderBase]: 5854/9559 cut-off events. [2024-06-27 22:01:03,213 INFO L125 PetriNetUnfolderBase]: For 10687/10691 co-relation queries the response was YES. [2024-06-27 22:01:03,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24432 conditions, 9559 events. 5854/9559 cut-off events. For 10687/10691 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 65297 event pairs, 3320 based on Foata normal form. 9/8996 useless extension candidates. Maximal degree in co-relation 24414. Up to 8139 conditions per place. [2024-06-27 22:01:03,261 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 90 selfloop transitions, 21 changer transitions 4/127 dead transitions. [2024-06-27 22:01:03,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 127 transitions, 708 flow [2024-06-27 22:01:03,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:01:03,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:01:03,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 218 transitions. [2024-06-27 22:01:03,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6228571428571429 [2024-06-27 22:01:03,263 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 272 flow. Second operand 7 states and 218 transitions. [2024-06-27 22:01:03,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 127 transitions, 708 flow [2024-06-27 22:01:03,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 127 transitions, 672 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 22:01:03,274 INFO L231 Difference]: Finished difference. Result has 70 places, 69 transitions, 343 flow [2024-06-27 22:01:03,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=343, PETRI_PLACES=70, PETRI_TRANSITIONS=69} [2024-06-27 22:01:03,275 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 14 predicate places. [2024-06-27 22:01:03,279 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 69 transitions, 343 flow [2024-06-27 22:01:03,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:03,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:03,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:03,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:01:03,279 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:01:03,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:03,280 INFO L85 PathProgramCache]: Analyzing trace with hash 377689518, now seen corresponding path program 1 times [2024-06-27 22:01:03,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:03,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418839076] [2024-06-27 22:01:03,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:03,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:03,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:01:05,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:01:05,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:01:05,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418839076] [2024-06-27 22:01:05,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418839076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:01:05,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:01:05,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:01:05,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302228977] [2024-06-27 22:01:05,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:01:05,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:01:05,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:01:05,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:01:05,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:01:05,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-27 22:01:05,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 69 transitions, 343 flow. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:05,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:01:05,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-27 22:01:05,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:06,270 INFO L124 PetriNetUnfolderBase]: 5879/8934 cut-off events. [2024-06-27 22:01:06,270 INFO L125 PetriNetUnfolderBase]: For 15234/15238 co-relation queries the response was YES. [2024-06-27 22:01:06,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25713 conditions, 8934 events. 5879/8934 cut-off events. For 15234/15238 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 56195 event pairs, 2089 based on Foata normal form. 9/8615 useless extension candidates. Maximal degree in co-relation 25694. Up to 8064 conditions per place. [2024-06-27 22:01:06,380 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 100 selfloop transitions, 41 changer transitions 5/158 dead transitions. [2024-06-27 22:01:06,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 158 transitions, 989 flow [2024-06-27 22:01:06,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:01:06,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:01:06,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 250 transitions. [2024-06-27 22:01:06,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-06-27 22:01:06,383 INFO L175 Difference]: Start difference. First operand has 70 places, 69 transitions, 343 flow. Second operand 8 states and 250 transitions. [2024-06-27 22:01:06,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 158 transitions, 989 flow [2024-06-27 22:01:06,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 158 transitions, 960 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 22:01:06,391 INFO L231 Difference]: Finished difference. Result has 79 places, 87 transitions, 616 flow [2024-06-27 22:01:06,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=616, PETRI_PLACES=79, PETRI_TRANSITIONS=87} [2024-06-27 22:01:06,393 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 23 predicate places. [2024-06-27 22:01:06,393 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 87 transitions, 616 flow [2024-06-27 22:01:06,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:06,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:06,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:06,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:01:06,394 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:01:06,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:06,395 INFO L85 PathProgramCache]: Analyzing trace with hash -69894236, now seen corresponding path program 1 times [2024-06-27 22:01:06,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:06,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469422405] [2024-06-27 22:01:06,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:06,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:06,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:01:06,459 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 22:01:06,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:01:06,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469422405] [2024-06-27 22:01:06,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469422405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:01:06,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:01:06,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:01:06,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288798246] [2024-06-27 22:01:06,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:01:06,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:01:06,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:01:06,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:01:06,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:01:06,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 50 [2024-06-27 22:01:06,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 87 transitions, 616 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:06,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:01:06,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 50 [2024-06-27 22:01:06,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:06,849 INFO L124 PetriNetUnfolderBase]: 1842/3951 cut-off events. [2024-06-27 22:01:06,849 INFO L125 PetriNetUnfolderBase]: For 3941/4227 co-relation queries the response was YES. [2024-06-27 22:01:06,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9758 conditions, 3951 events. 1842/3951 cut-off events. For 3941/4227 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 32745 event pairs, 1062 based on Foata normal form. 17/3633 useless extension candidates. Maximal degree in co-relation 9733. Up to 2346 conditions per place. [2024-06-27 22:01:06,875 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 40 selfloop transitions, 4 changer transitions 0/102 dead transitions. [2024-06-27 22:01:06,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 102 transitions, 738 flow [2024-06-27 22:01:06,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:01:06,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:01:06,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-06-27 22:01:06,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7933333333333333 [2024-06-27 22:01:06,877 INFO L175 Difference]: Start difference. First operand has 79 places, 87 transitions, 616 flow. Second operand 3 states and 119 transitions. [2024-06-27 22:01:06,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 102 transitions, 738 flow [2024-06-27 22:01:06,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 102 transitions, 663 flow, removed 34 selfloop flow, removed 1 redundant places. [2024-06-27 22:01:06,883 INFO L231 Difference]: Finished difference. Result has 79 places, 86 transitions, 545 flow [2024-06-27 22:01:06,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=545, PETRI_PLACES=79, PETRI_TRANSITIONS=86} [2024-06-27 22:01:06,884 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 23 predicate places. [2024-06-27 22:01:06,884 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 86 transitions, 545 flow [2024-06-27 22:01:06,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:06,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:06,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:06,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:01:06,885 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 22:01:06,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:06,885 INFO L85 PathProgramCache]: Analyzing trace with hash -69894779, now seen corresponding path program 1 times [2024-06-27 22:01:06,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:06,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704158874] [2024-06-27 22:01:06,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:06,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:06,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:01:08,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:01:08,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:01:08,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704158874] [2024-06-27 22:01:08,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704158874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:01:08,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:01:08,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:01:08,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054786456] [2024-06-27 22:01:08,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:01:08,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:01:08,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:01:08,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:01:08,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:01:09,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-27 22:01:09,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 86 transitions, 545 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 22:01:09,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:01:09,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-27 22:01:09,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:10,299 INFO L124 PetriNetUnfolderBase]: 5691/9423 cut-off events. [2024-06-27 22:01:10,299 INFO L125 PetriNetUnfolderBase]: For 22456/22524 co-relation queries the response was YES. [2024-06-27 22:01:10,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28159 conditions, 9423 events. 5691/9423 cut-off events. For 22456/22524 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 64514 event pairs, 3572 based on Foata normal form. 72/9192 useless extension candidates. Maximal degree in co-relation 28132. Up to 8104 conditions per place. [2024-06-27 22:01:10,344 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 94 selfloop transitions, 18 changer transitions 0/125 dead transitions. [2024-06-27 22:01:10,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 125 transitions, 919 flow [2024-06-27 22:01:10,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:01:10,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:01:10,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 161 transitions. [2024-06-27 22:01:10,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5366666666666666 [2024-06-27 22:01:10,346 INFO L175 Difference]: Start difference. First operand has 79 places, 86 transitions, 545 flow. Second operand 6 states and 161 transitions. [2024-06-27 22:01:10,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 125 transitions, 919 flow [2024-06-27 22:01:10,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 125 transitions, 903 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 22:01:10,354 INFO L231 Difference]: Finished difference. Result has 85 places, 96 transitions, 674 flow [2024-06-27 22:01:10,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=674, PETRI_PLACES=85, PETRI_TRANSITIONS=96} [2024-06-27 22:01:10,354 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 29 predicate places. [2024-06-27 22:01:10,354 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 96 transitions, 674 flow [2024-06-27 22:01:10,355 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 22:01:10,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:10,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:10,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:01:10,355 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:01:10,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:10,355 INFO L85 PathProgramCache]: Analyzing trace with hash 486127667, now seen corresponding path program 1 times [2024-06-27 22:01:10,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:10,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867025017] [2024-06-27 22:01:10,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:10,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:10,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:01:12,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:01:12,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:01:12,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867025017] [2024-06-27 22:01:12,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867025017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:01:12,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:01:12,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:01:12,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512369954] [2024-06-27 22:01:12,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:01:12,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:01:12,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:01:12,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:01:12,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:01:12,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-27 22:01:12,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 96 transitions, 674 flow. Second operand has 9 states, 9 states have (on average 16.11111111111111) internal successors, (145), 9 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:12,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:01:12,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-27 22:01:12,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:13,884 INFO L124 PetriNetUnfolderBase]: 5273/8662 cut-off events. [2024-06-27 22:01:13,884 INFO L125 PetriNetUnfolderBase]: For 25003/25011 co-relation queries the response was YES. [2024-06-27 22:01:13,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27891 conditions, 8662 events. 5273/8662 cut-off events. For 25003/25011 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 58144 event pairs, 2104 based on Foata normal form. 18/8396 useless extension candidates. Maximal degree in co-relation 27860. Up to 7132 conditions per place. [2024-06-27 22:01:13,921 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 107 selfloop transitions, 49 changer transitions 8/176 dead transitions. [2024-06-27 22:01:13,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 176 transitions, 1280 flow [2024-06-27 22:01:13,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:01:13,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:01:13,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 275 transitions. [2024-06-27 22:01:13,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-06-27 22:01:13,923 INFO L175 Difference]: Start difference. First operand has 85 places, 96 transitions, 674 flow. Second operand 9 states and 275 transitions. [2024-06-27 22:01:13,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 176 transitions, 1280 flow [2024-06-27 22:01:13,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 176 transitions, 1243 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-27 22:01:13,934 INFO L231 Difference]: Finished difference. Result has 91 places, 97 transitions, 769 flow [2024-06-27 22:01:13,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=623, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=769, PETRI_PLACES=91, PETRI_TRANSITIONS=97} [2024-06-27 22:01:13,934 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 35 predicate places. [2024-06-27 22:01:13,935 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 97 transitions, 769 flow [2024-06-27 22:01:13,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.11111111111111) internal successors, (145), 9 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:13,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:13,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:13,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:01:13,935 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 22:01:13,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:13,936 INFO L85 PathProgramCache]: Analyzing trace with hash -986856437, now seen corresponding path program 1 times [2024-06-27 22:01:13,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:13,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216570968] [2024-06-27 22:01:13,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:13,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:13,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:01:16,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:01:16,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:01:16,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216570968] [2024-06-27 22:01:16,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216570968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:01:16,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:01:16,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:01:16,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624631488] [2024-06-27 22:01:16,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:01:16,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:01:16,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:01:16,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:01:16,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:01:16,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-27 22:01:16,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 97 transitions, 769 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 22:01:16,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:01:16,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-27 22:01:16,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:17,459 INFO L124 PetriNetUnfolderBase]: 5065/8550 cut-off events. [2024-06-27 22:01:17,459 INFO L125 PetriNetUnfolderBase]: For 33312/33381 co-relation queries the response was YES. [2024-06-27 22:01:17,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28666 conditions, 8550 events. 5065/8550 cut-off events. For 33312/33381 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 58846 event pairs, 2862 based on Foata normal form. 67/8361 useless extension candidates. Maximal degree in co-relation 28633. Up to 7169 conditions per place. [2024-06-27 22:01:17,512 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 116 selfloop transitions, 36 changer transitions 0/165 dead transitions. [2024-06-27 22:01:17,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 165 transitions, 1450 flow [2024-06-27 22:01:17,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:01:17,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:01:17,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-06-27 22:01:17,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53 [2024-06-27 22:01:17,515 INFO L175 Difference]: Start difference. First operand has 91 places, 97 transitions, 769 flow. Second operand 8 states and 212 transitions. [2024-06-27 22:01:17,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 165 transitions, 1450 flow [2024-06-27 22:01:17,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 165 transitions, 1308 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 22:01:17,535 INFO L231 Difference]: Finished difference. Result has 95 places, 125 transitions, 981 flow [2024-06-27 22:01:17,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=981, PETRI_PLACES=95, PETRI_TRANSITIONS=125} [2024-06-27 22:01:17,537 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 39 predicate places. [2024-06-27 22:01:17,537 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 125 transitions, 981 flow [2024-06-27 22:01:17,537 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 22:01:17,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:17,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:17,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:01:17,537 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 22:01:17,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:17,538 INFO L85 PathProgramCache]: Analyzing trace with hash -343457807, now seen corresponding path program 2 times [2024-06-27 22:01:17,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:17,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659945166] [2024-06-27 22:01:17,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:17,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:01:19,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:01:19,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:01:19,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659945166] [2024-06-27 22:01:19,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659945166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:01:19,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:01:19,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:01:19,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239165369] [2024-06-27 22:01:19,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:01:19,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:01:19,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:01:19,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:01:19,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:01:19,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-27 22:01:19,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 125 transitions, 981 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 22:01:19,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:01:19,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-27 22:01:19,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:20,423 INFO L124 PetriNetUnfolderBase]: 5186/8731 cut-off events. [2024-06-27 22:01:20,423 INFO L125 PetriNetUnfolderBase]: For 39841/39908 co-relation queries the response was YES. [2024-06-27 22:01:20,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31406 conditions, 8731 events. 5186/8731 cut-off events. For 39841/39908 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 59935 event pairs, 2955 based on Foata normal form. 67/8546 useless extension candidates. Maximal degree in co-relation 31367. Up to 7297 conditions per place. [2024-06-27 22:01:20,483 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 123 selfloop transitions, 50 changer transitions 0/186 dead transitions. [2024-06-27 22:01:20,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 186 transitions, 1785 flow [2024-06-27 22:01:20,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:01:20,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:01:20,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-27 22:01:20,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5228571428571429 [2024-06-27 22:01:20,486 INFO L175 Difference]: Start difference. First operand has 95 places, 125 transitions, 981 flow. Second operand 7 states and 183 transitions. [2024-06-27 22:01:20,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 186 transitions, 1785 flow [2024-06-27 22:01:20,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 186 transitions, 1715 flow, removed 34 selfloop flow, removed 1 redundant places. [2024-06-27 22:01:20,527 INFO L231 Difference]: Finished difference. Result has 103 places, 154 transitions, 1398 flow [2024-06-27 22:01:20,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=947, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1398, PETRI_PLACES=103, PETRI_TRANSITIONS=154} [2024-06-27 22:01:20,528 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 47 predicate places. [2024-06-27 22:01:20,528 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 154 transitions, 1398 flow [2024-06-27 22:01:20,528 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 22:01:20,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:20,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:20,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:01:20,529 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 22:01:20,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:20,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1525270223, now seen corresponding path program 3 times [2024-06-27 22:01:20,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:20,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340558531] [2024-06-27 22:01:20,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:20,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:01:22,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:01:22,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:01:22,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340558531] [2024-06-27 22:01:22,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340558531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:01:22,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:01:22,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:01:22,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010307641] [2024-06-27 22:01:22,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:01:22,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:01:22,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:01:22,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:01:22,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:01:22,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-27 22:01:22,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 154 transitions, 1398 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 22:01:22,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:01:22,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-27 22:01:22,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:23,476 INFO L124 PetriNetUnfolderBase]: 5218/8777 cut-off events. [2024-06-27 22:01:23,477 INFO L125 PetriNetUnfolderBase]: For 45662/45725 co-relation queries the response was YES. [2024-06-27 22:01:23,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32725 conditions, 8777 events. 5218/8777 cut-off events. For 45662/45725 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 60046 event pairs, 2949 based on Foata normal form. 66/8592 useless extension candidates. Maximal degree in co-relation 32681. Up to 7407 conditions per place. [2024-06-27 22:01:23,532 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 152 selfloop transitions, 36 changer transitions 0/201 dead transitions. [2024-06-27 22:01:23,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 201 transitions, 2115 flow [2024-06-27 22:01:23,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:01:23,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:01:23,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-27 22:01:23,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-06-27 22:01:23,536 INFO L175 Difference]: Start difference. First operand has 103 places, 154 transitions, 1398 flow. Second operand 7 states and 180 transitions. [2024-06-27 22:01:23,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 201 transitions, 2115 flow [2024-06-27 22:01:23,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 201 transitions, 2072 flow, removed 20 selfloop flow, removed 1 redundant places. [2024-06-27 22:01:23,581 INFO L231 Difference]: Finished difference. Result has 111 places, 171 transitions, 1681 flow [2024-06-27 22:01:23,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1355, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1681, PETRI_PLACES=111, PETRI_TRANSITIONS=171} [2024-06-27 22:01:23,581 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 55 predicate places. [2024-06-27 22:01:23,581 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 171 transitions, 1681 flow [2024-06-27 22:01:23,582 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 22:01:23,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:23,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:23,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:01:23,582 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 22:01:23,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:23,582 INFO L85 PathProgramCache]: Analyzing trace with hash -78357587, now seen corresponding path program 4 times [2024-06-27 22:01:23,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:23,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968329771] [2024-06-27 22:01:23,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:23,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:23,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:01:24,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:01:24,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:01:24,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968329771] [2024-06-27 22:01:24,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968329771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:01:24,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:01:24,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:01:24,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130617760] [2024-06-27 22:01:24,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:01:24,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:01:24,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:01:24,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:01:24,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:01:24,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-27 22:01:24,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 171 transitions, 1681 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 22:01:24,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:01:24,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-27 22:01:24,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:26,305 INFO L124 PetriNetUnfolderBase]: 5210/8764 cut-off events. [2024-06-27 22:01:26,305 INFO L125 PetriNetUnfolderBase]: For 49096/49159 co-relation queries the response was YES. [2024-06-27 22:01:26,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33142 conditions, 8764 events. 5210/8764 cut-off events. For 49096/49159 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 59940 event pairs, 2954 based on Foata normal form. 66/8579 useless extension candidates. Maximal degree in co-relation 33092. Up to 7438 conditions per place. [2024-06-27 22:01:26,370 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 163 selfloop transitions, 24 changer transitions 0/200 dead transitions. [2024-06-27 22:01:26,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 200 transitions, 2163 flow [2024-06-27 22:01:26,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:01:26,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:01:26,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-27 22:01:26,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5028571428571429 [2024-06-27 22:01:26,371 INFO L175 Difference]: Start difference. First operand has 111 places, 171 transitions, 1681 flow. Second operand 7 states and 176 transitions. [2024-06-27 22:01:26,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 200 transitions, 2163 flow [2024-06-27 22:01:26,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 200 transitions, 2069 flow, removed 39 selfloop flow, removed 2 redundant places. [2024-06-27 22:01:26,417 INFO L231 Difference]: Finished difference. Result has 116 places, 173 transitions, 1674 flow [2024-06-27 22:01:26,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1587, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1674, PETRI_PLACES=116, PETRI_TRANSITIONS=173} [2024-06-27 22:01:26,418 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 60 predicate places. [2024-06-27 22:01:26,418 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 173 transitions, 1674 flow [2024-06-27 22:01:26,418 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 22:01:26,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:26,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:26,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:01:26,419 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:01:26,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:26,419 INFO L85 PathProgramCache]: Analyzing trace with hash -723767614, now seen corresponding path program 1 times [2024-06-27 22:01:26,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:26,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871304459] [2024-06-27 22:01:26,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:26,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:01:27,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:01:27,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:01:27,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871304459] [2024-06-27 22:01:27,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871304459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:01:27,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:01:27,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:01:27,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856794055] [2024-06-27 22:01:27,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:01:27,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:01:27,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:01:27,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:01:27,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:01:27,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 22:01:27,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 173 transitions, 1674 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 22:01:27,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:01:27,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 22:01:27,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:29,560 INFO L124 PetriNetUnfolderBase]: 7108/11790 cut-off events. [2024-06-27 22:01:29,560 INFO L125 PetriNetUnfolderBase]: For 67653/68153 co-relation queries the response was YES. [2024-06-27 22:01:29,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43135 conditions, 11790 events. 7108/11790 cut-off events. For 67653/68153 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 82066 event pairs, 3982 based on Foata normal form. 115/11413 useless extension candidates. Maximal degree in co-relation 43083. Up to 10070 conditions per place. [2024-06-27 22:01:29,657 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 152 selfloop transitions, 17 changer transitions 0/190 dead transitions. [2024-06-27 22:01:29,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 190 transitions, 2076 flow [2024-06-27 22:01:29,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:01:29,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:01:29,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-06-27 22:01:29,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.488 [2024-06-27 22:01:29,658 INFO L175 Difference]: Start difference. First operand has 116 places, 173 transitions, 1674 flow. Second operand 5 states and 122 transitions. [2024-06-27 22:01:29,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 190 transitions, 2076 flow [2024-06-27 22:01:29,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 190 transitions, 2006 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 22:01:29,711 INFO L231 Difference]: Finished difference. Result has 116 places, 176 transitions, 1677 flow [2024-06-27 22:01:29,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1604, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1677, PETRI_PLACES=116, PETRI_TRANSITIONS=176} [2024-06-27 22:01:29,712 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 60 predicate places. [2024-06-27 22:01:29,712 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 176 transitions, 1677 flow [2024-06-27 22:01:29,713 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 22:01:29,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:29,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:29,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:01:29,713 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 22:01:29,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:29,714 INFO L85 PathProgramCache]: Analyzing trace with hash -774070456, now seen corresponding path program 1 times [2024-06-27 22:01:29,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:29,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226983878] [2024-06-27 22:01:29,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:29,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:29,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:01:31,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:01:31,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:01:31,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226983878] [2024-06-27 22:01:31,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226983878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:01:31,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:01:31,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:01:31,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341905934] [2024-06-27 22:01:31,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:01:31,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:01:31,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:01:31,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:01:31,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:01:31,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 22:01:31,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 176 transitions, 1677 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 22:01:31,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:01:31,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 22:01:31,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:33,440 INFO L124 PetriNetUnfolderBase]: 5949/9785 cut-off events. [2024-06-27 22:01:33,440 INFO L125 PetriNetUnfolderBase]: For 65698/65722 co-relation queries the response was YES. [2024-06-27 22:01:33,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38878 conditions, 9785 events. 5949/9785 cut-off events. For 65698/65722 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 65963 event pairs, 2891 based on Foata normal form. 7/9473 useless extension candidates. Maximal degree in co-relation 38825. Up to 8039 conditions per place. [2024-06-27 22:01:33,520 INFO L140 encePairwiseOnDemand]: 35/50 looper letters, 139 selfloop transitions, 97 changer transitions 0/247 dead transitions. [2024-06-27 22:01:33,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 247 transitions, 2588 flow [2024-06-27 22:01:33,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:01:33,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:01:33,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-06-27 22:01:33,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5177777777777778 [2024-06-27 22:01:33,522 INFO L175 Difference]: Start difference. First operand has 116 places, 176 transitions, 1677 flow. Second operand 9 states and 233 transitions. [2024-06-27 22:01:33,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 247 transitions, 2588 flow [2024-06-27 22:01:33,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 247 transitions, 2557 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-27 22:01:33,586 INFO L231 Difference]: Finished difference. Result has 125 places, 200 transitions, 2116 flow [2024-06-27 22:01:33,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1646, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2116, PETRI_PLACES=125, PETRI_TRANSITIONS=200} [2024-06-27 22:01:33,587 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 69 predicate places. [2024-06-27 22:01:33,587 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 200 transitions, 2116 flow [2024-06-27 22:01:33,587 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 22:01:33,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:33,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:33,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:01:33,588 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 22:01:33,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:33,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1196427234, now seen corresponding path program 2 times [2024-06-27 22:01:33,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:33,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661923351] [2024-06-27 22:01:33,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:33,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:33,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:01:35,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:01:35,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:01:35,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661923351] [2024-06-27 22:01:35,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661923351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:01:35,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:01:35,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:01:35,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844116886] [2024-06-27 22:01:35,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:01:35,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:01:35,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:01:35,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:01:35,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:01:35,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 22:01:35,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 200 transitions, 2116 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 22:01:35,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:01:35,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 22:01:35,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:37,939 INFO L124 PetriNetUnfolderBase]: 6187/10194 cut-off events. [2024-06-27 22:01:37,940 INFO L125 PetriNetUnfolderBase]: For 81235/81260 co-relation queries the response was YES. [2024-06-27 22:01:37,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43804 conditions, 10194 events. 6187/10194 cut-off events. For 81235/81260 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 68925 event pairs, 2882 based on Foata normal form. 12/9876 useless extension candidates. Maximal degree in co-relation 43746. Up to 8261 conditions per place. [2024-06-27 22:01:37,998 INFO L140 encePairwiseOnDemand]: 35/50 looper letters, 152 selfloop transitions, 128 changer transitions 0/291 dead transitions. [2024-06-27 22:01:37,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 291 transitions, 3508 flow [2024-06-27 22:01:37,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:01:38,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:01:38,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 235 transitions. [2024-06-27 22:01:38,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5222222222222223 [2024-06-27 22:01:38,001 INFO L175 Difference]: Start difference. First operand has 125 places, 200 transitions, 2116 flow. Second operand 9 states and 235 transitions. [2024-06-27 22:01:38,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 291 transitions, 3508 flow [2024-06-27 22:01:38,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 291 transitions, 3278 flow, removed 76 selfloop flow, removed 3 redundant places. [2024-06-27 22:01:38,074 INFO L231 Difference]: Finished difference. Result has 134 places, 239 transitions, 2707 flow [2024-06-27 22:01:38,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1976, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2707, PETRI_PLACES=134, PETRI_TRANSITIONS=239} [2024-06-27 22:01:38,074 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 78 predicate places. [2024-06-27 22:01:38,075 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 239 transitions, 2707 flow [2024-06-27 22:01:38,075 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 22:01:38,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:38,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:38,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:01:38,075 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 22:01:38,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:38,076 INFO L85 PathProgramCache]: Analyzing trace with hash -446385954, now seen corresponding path program 3 times [2024-06-27 22:01:38,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:38,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129561275] [2024-06-27 22:01:38,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:38,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:38,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:01:40,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:01:40,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:01:40,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129561275] [2024-06-27 22:01:40,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129561275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:01:40,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:01:40,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:01:40,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62623365] [2024-06-27 22:01:40,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:01:40,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:01:40,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:01:40,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:01:40,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:01:40,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 22:01:40,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 239 transitions, 2707 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 22:01:40,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:01:40,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 22:01:40,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:42,338 INFO L124 PetriNetUnfolderBase]: 6262/10300 cut-off events. [2024-06-27 22:01:42,338 INFO L125 PetriNetUnfolderBase]: For 90509/90529 co-relation queries the response was YES. [2024-06-27 22:01:42,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45935 conditions, 10300 events. 6262/10300 cut-off events. For 90509/90529 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 69543 event pairs, 2863 based on Foata normal form. 8/9977 useless extension candidates. Maximal degree in co-relation 45872. Up to 8335 conditions per place. [2024-06-27 22:01:42,409 INFO L140 encePairwiseOnDemand]: 35/50 looper letters, 159 selfloop transitions, 143 changer transitions 0/313 dead transitions. [2024-06-27 22:01:42,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 313 transitions, 3983 flow [2024-06-27 22:01:42,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:01:42,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:01:42,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 235 transitions. [2024-06-27 22:01:42,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5222222222222223 [2024-06-27 22:01:42,411 INFO L175 Difference]: Start difference. First operand has 134 places, 239 transitions, 2707 flow. Second operand 9 states and 235 transitions. [2024-06-27 22:01:42,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 313 transitions, 3983 flow [2024-06-27 22:01:42,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 313 transitions, 3803 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-27 22:01:42,533 INFO L231 Difference]: Finished difference. Result has 141 places, 260 transitions, 3119 flow [2024-06-27 22:01:42,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2547, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3119, PETRI_PLACES=141, PETRI_TRANSITIONS=260} [2024-06-27 22:01:42,533 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 85 predicate places. [2024-06-27 22:01:42,534 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 260 transitions, 3119 flow [2024-06-27 22:01:42,534 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 22:01:42,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:42,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:42,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:01:42,534 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 22:01:42,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:42,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1272254660, now seen corresponding path program 4 times [2024-06-27 22:01:42,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:42,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891876551] [2024-06-27 22:01:42,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:42,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:42,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:01:44,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:01:44,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:01:44,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891876551] [2024-06-27 22:01:44,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891876551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:01:44,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:01:44,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:01:44,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119093178] [2024-06-27 22:01:44,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:01:44,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:01:44,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:01:44,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:01:44,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:01:44,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 22:01:44,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 260 transitions, 3119 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 22:01:44,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:01:44,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 22:01:44,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:46,748 INFO L124 PetriNetUnfolderBase]: 6254/10292 cut-off events. [2024-06-27 22:01:46,748 INFO L125 PetriNetUnfolderBase]: For 97225/97245 co-relation queries the response was YES. [2024-06-27 22:01:46,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46306 conditions, 10292 events. 6254/10292 cut-off events. For 97225/97245 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 69447 event pairs, 2858 based on Foata normal form. 8/9969 useless extension candidates. Maximal degree in co-relation 46241. Up to 8327 conditions per place. [2024-06-27 22:01:46,833 INFO L140 encePairwiseOnDemand]: 35/50 looper letters, 155 selfloop transitions, 148 changer transitions 0/314 dead transitions. [2024-06-27 22:01:46,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 314 transitions, 4097 flow [2024-06-27 22:01:46,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:01:46,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:01:46,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 232 transitions. [2024-06-27 22:01:46,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5155555555555555 [2024-06-27 22:01:46,835 INFO L175 Difference]: Start difference. First operand has 141 places, 260 transitions, 3119 flow. Second operand 9 states and 232 transitions. [2024-06-27 22:01:46,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 314 transitions, 4097 flow [2024-06-27 22:01:46,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 314 transitions, 3821 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-27 22:01:46,962 INFO L231 Difference]: Finished difference. Result has 145 places, 262 transitions, 3173 flow [2024-06-27 22:01:46,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2845, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3173, PETRI_PLACES=145, PETRI_TRANSITIONS=262} [2024-06-27 22:01:46,962 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 89 predicate places. [2024-06-27 22:01:46,962 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 262 transitions, 3173 flow [2024-06-27 22:01:46,963 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 22:01:46,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:46,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:46,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:01:46,963 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 22:01:46,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:46,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1705054612, now seen corresponding path program 5 times [2024-06-27 22:01:46,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:46,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961630504] [2024-06-27 22:01:46,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:46,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:46,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:01:48,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:01:48,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:01:48,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961630504] [2024-06-27 22:01:48,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961630504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:01:48,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:01:48,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:01:48,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643746457] [2024-06-27 22:01:48,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:01:48,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:01:48,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:01:48,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:01:48,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:01:48,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 22:01:48,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 262 transitions, 3173 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 22:01:48,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:01:48,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 22:01:48,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:50,329 INFO L124 PetriNetUnfolderBase]: 6577/10761 cut-off events. [2024-06-27 22:01:50,330 INFO L125 PetriNetUnfolderBase]: For 110191/110211 co-relation queries the response was YES. [2024-06-27 22:01:50,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49793 conditions, 10761 events. 6577/10761 cut-off events. For 110191/110211 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 72407 event pairs, 3092 based on Foata normal form. 4/10425 useless extension candidates. Maximal degree in co-relation 49727. Up to 8860 conditions per place. [2024-06-27 22:01:50,422 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 215 selfloop transitions, 159 changer transitions 0/385 dead transitions. [2024-06-27 22:01:50,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 385 transitions, 5271 flow [2024-06-27 22:01:50,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:01:50,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:01:50,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-27 22:01:50,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075 [2024-06-27 22:01:50,423 INFO L175 Difference]: Start difference. First operand has 145 places, 262 transitions, 3173 flow. Second operand 8 states and 203 transitions. [2024-06-27 22:01:50,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 385 transitions, 5271 flow [2024-06-27 22:01:50,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 385 transitions, 4849 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 22:01:50,563 INFO L231 Difference]: Finished difference. Result has 149 places, 344 transitions, 4416 flow [2024-06-27 22:01:50,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2904, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4416, PETRI_PLACES=149, PETRI_TRANSITIONS=344} [2024-06-27 22:01:50,564 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 93 predicate places. [2024-06-27 22:01:50,564 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 344 transitions, 4416 flow [2024-06-27 22:01:50,564 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 22:01:50,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:50,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:50,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:01:50,565 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 22:01:50,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:50,565 INFO L85 PathProgramCache]: Analyzing trace with hash -2057263960, now seen corresponding path program 6 times [2024-06-27 22:01:50,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:50,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093382524] [2024-06-27 22:01:50,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:50,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:50,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:01:52,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:01:52,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:01:52,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093382524] [2024-06-27 22:01:52,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093382524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:01:52,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:01:52,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:01:52,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181107228] [2024-06-27 22:01:52,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:01:52,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:01:52,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:01:52,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:01:52,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:01:52,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 22:01:52,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 344 transitions, 4416 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 22:01:52,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:01:52,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 22:01:52,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:54,394 INFO L124 PetriNetUnfolderBase]: 6744/11002 cut-off events. [2024-06-27 22:01:54,394 INFO L125 PetriNetUnfolderBase]: For 124909/124929 co-relation queries the response was YES. [2024-06-27 22:01:54,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52854 conditions, 11002 events. 6744/11002 cut-off events. For 124909/124929 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 73778 event pairs, 3095 based on Foata normal form. 5/10666 useless extension candidates. Maximal degree in co-relation 52785. Up to 9020 conditions per place. [2024-06-27 22:01:54,492 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 230 selfloop transitions, 191 changer transitions 0/432 dead transitions. [2024-06-27 22:01:54,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 432 transitions, 6283 flow [2024-06-27 22:01:54,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:01:54,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:01:54,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-27 22:01:54,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515 [2024-06-27 22:01:54,493 INFO L175 Difference]: Start difference. First operand has 149 places, 344 transitions, 4416 flow. Second operand 8 states and 206 transitions. [2024-06-27 22:01:54,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 432 transitions, 6283 flow [2024-06-27 22:01:54,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 432 transitions, 6169 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-27 22:01:54,686 INFO L231 Difference]: Finished difference. Result has 155 places, 386 transitions, 5417 flow [2024-06-27 22:01:54,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=4302, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5417, PETRI_PLACES=155, PETRI_TRANSITIONS=386} [2024-06-27 22:01:54,687 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 99 predicate places. [2024-06-27 22:01:54,687 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 386 transitions, 5417 flow [2024-06-27 22:01:54,688 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 22:01:54,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:54,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:54,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:01:54,688 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 22:01:54,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:54,688 INFO L85 PathProgramCache]: Analyzing trace with hash -2057256520, now seen corresponding path program 7 times [2024-06-27 22:01:54,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:54,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699524081] [2024-06-27 22:01:54,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:54,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:54,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:01:56,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:01:56,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:01:56,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699524081] [2024-06-27 22:01:56,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699524081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:01:56,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:01:56,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:01:56,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056345301] [2024-06-27 22:01:56,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:01:56,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:01:56,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:01:56,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:01:56,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:01:56,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 22:01:56,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 386 transitions, 5417 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 22:01:56,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:01:56,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 22:01:56,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:58,399 INFO L124 PetriNetUnfolderBase]: 6733/10994 cut-off events. [2024-06-27 22:01:58,399 INFO L125 PetriNetUnfolderBase]: For 132390/132410 co-relation queries the response was YES. [2024-06-27 22:01:58,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53907 conditions, 10994 events. 6733/10994 cut-off events. For 132390/132410 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 73860 event pairs, 3086 based on Foata normal form. 5/10658 useless extension candidates. Maximal degree in co-relation 53835. Up to 9009 conditions per place. [2024-06-27 22:01:58,477 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 227 selfloop transitions, 198 changer transitions 0/436 dead transitions. [2024-06-27 22:01:58,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 436 transitions, 6645 flow [2024-06-27 22:01:58,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:01:58,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:01:58,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-27 22:01:58,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075 [2024-06-27 22:01:58,479 INFO L175 Difference]: Start difference. First operand has 155 places, 386 transitions, 5417 flow. Second operand 8 states and 203 transitions. [2024-06-27 22:01:58,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 436 transitions, 6645 flow [2024-06-27 22:01:58,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 436 transitions, 6266 flow, removed 59 selfloop flow, removed 4 redundant places. [2024-06-27 22:01:58,706 INFO L231 Difference]: Finished difference. Result has 159 places, 390 transitions, 5519 flow [2024-06-27 22:01:58,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=5042, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5519, PETRI_PLACES=159, PETRI_TRANSITIONS=390} [2024-06-27 22:01:58,707 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 103 predicate places. [2024-06-27 22:01:58,707 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 390 transitions, 5519 flow [2024-06-27 22:01:58,707 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 22:01:58,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:58,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:58,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:01:58,708 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:01:58,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:58,708 INFO L85 PathProgramCache]: Analyzing trace with hash 38737562, now seen corresponding path program 8 times [2024-06-27 22:01:58,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:58,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300753647] [2024-06-27 22:01:58,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:58,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:58,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:00,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:00,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:00,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300753647] [2024-06-27 22:02:00,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300753647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:00,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:00,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:02:00,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296958592] [2024-06-27 22:02:00,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:00,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:02:00,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:00,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:02:00,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:02:00,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 22:02:00,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 390 transitions, 5519 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 22:02:00,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:00,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 22:02:00,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:02,208 INFO L124 PetriNetUnfolderBase]: 6848/11170 cut-off events. [2024-06-27 22:02:02,208 INFO L125 PetriNetUnfolderBase]: For 144285/144301 co-relation queries the response was YES. [2024-06-27 22:02:02,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55663 conditions, 11170 events. 6848/11170 cut-off events. For 144285/144301 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 74936 event pairs, 3125 based on Foata normal form. 4/10834 useless extension candidates. Maximal degree in co-relation 55590. Up to 9442 conditions per place. [2024-06-27 22:02:02,312 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 379 selfloop transitions, 91 changer transitions 0/481 dead transitions. [2024-06-27 22:02:02,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 481 transitions, 7661 flow [2024-06-27 22:02:02,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:02:02,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:02:02,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-27 22:02:02,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5025 [2024-06-27 22:02:02,314 INFO L175 Difference]: Start difference. First operand has 159 places, 390 transitions, 5519 flow. Second operand 8 states and 201 transitions. [2024-06-27 22:02:02,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 481 transitions, 7661 flow [2024-06-27 22:02:02,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 481 transitions, 7228 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-27 22:02:02,543 INFO L231 Difference]: Finished difference. Result has 163 places, 435 transitions, 6170 flow [2024-06-27 22:02:02,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=5174, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6170, PETRI_PLACES=163, PETRI_TRANSITIONS=435} [2024-06-27 22:02:02,543 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 107 predicate places. [2024-06-27 22:02:02,543 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 435 transitions, 6170 flow [2024-06-27 22:02:02,544 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 22:02:02,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:02,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:02,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:02:02,544 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 22:02:02,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:02,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1665947768, now seen corresponding path program 9 times [2024-06-27 22:02:02,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:02,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029500465] [2024-06-27 22:02:02,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:02,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:02,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:04,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:04,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:04,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029500465] [2024-06-27 22:02:04,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029500465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:04,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:04,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:02:04,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046123165] [2024-06-27 22:02:04,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:04,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:02:04,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:04,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:02:04,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:02:04,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 22:02:04,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 435 transitions, 6170 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 22:02:04,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:04,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 22:02:04,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:06,135 INFO L124 PetriNetUnfolderBase]: 6837/11151 cut-off events. [2024-06-27 22:02:06,135 INFO L125 PetriNetUnfolderBase]: For 149739/149755 co-relation queries the response was YES. [2024-06-27 22:02:06,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55566 conditions, 11151 events. 6837/11151 cut-off events. For 149739/149755 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 74820 event pairs, 3140 based on Foata normal form. 4/10815 useless extension candidates. Maximal degree in co-relation 55491. Up to 9562 conditions per place. [2024-06-27 22:02:06,246 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 423 selfloop transitions, 40 changer transitions 0/474 dead transitions. [2024-06-27 22:02:06,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 474 transitions, 7306 flow [2024-06-27 22:02:06,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:02:06,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:02:06,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-27 22:02:06,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4825 [2024-06-27 22:02:06,248 INFO L175 Difference]: Start difference. First operand has 163 places, 435 transitions, 6170 flow. Second operand 8 states and 193 transitions. [2024-06-27 22:02:06,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 474 transitions, 7306 flow [2024-06-27 22:02:06,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 474 transitions, 7144 flow, removed 65 selfloop flow, removed 4 redundant places. [2024-06-27 22:02:06,554 INFO L231 Difference]: Finished difference. Result has 167 places, 439 transitions, 6176 flow [2024-06-27 22:02:06,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=6008, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6176, PETRI_PLACES=167, PETRI_TRANSITIONS=439} [2024-06-27 22:02:06,555 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 111 predicate places. [2024-06-27 22:02:06,555 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 439 transitions, 6176 flow [2024-06-27 22:02:06,555 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 22:02:06,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:06,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:06,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:02:06,556 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 22:02:06,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:06,556 INFO L85 PathProgramCache]: Analyzing trace with hash 2006235988, now seen corresponding path program 10 times [2024-06-27 22:02:06,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:06,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472415519] [2024-06-27 22:02:06,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:06,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:06,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:08,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:08,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:08,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472415519] [2024-06-27 22:02:08,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472415519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:08,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:08,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:02:08,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858798179] [2024-06-27 22:02:08,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:08,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:02:08,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:08,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:02:08,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:02:08,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 22:02:08,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 439 transitions, 6176 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 22:02:08,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:08,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 22:02:08,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:10,309 INFO L124 PetriNetUnfolderBase]: 6826/11137 cut-off events. [2024-06-27 22:02:10,309 INFO L125 PetriNetUnfolderBase]: For 154601/154617 co-relation queries the response was YES. [2024-06-27 22:02:10,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55613 conditions, 11137 events. 6826/11137 cut-off events. For 154601/154617 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 74685 event pairs, 3124 based on Foata normal form. 4/10801 useless extension candidates. Maximal degree in co-relation 55538. Up to 9420 conditions per place. [2024-06-27 22:02:10,399 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 367 selfloop transitions, 98 changer transitions 0/476 dead transitions. [2024-06-27 22:02:10,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 476 transitions, 7280 flow [2024-06-27 22:02:10,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:02:10,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:02:10,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-27 22:02:10,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49 [2024-06-27 22:02:10,401 INFO L175 Difference]: Start difference. First operand has 167 places, 439 transitions, 6176 flow. Second operand 8 states and 196 transitions. [2024-06-27 22:02:10,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 476 transitions, 7280 flow [2024-06-27 22:02:10,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 476 transitions, 7080 flow, removed 69 selfloop flow, removed 6 redundant places. [2024-06-27 22:02:10,680 INFO L231 Difference]: Finished difference. Result has 169 places, 439 transitions, 6193 flow [2024-06-27 22:02:10,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=5976, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6193, PETRI_PLACES=169, PETRI_TRANSITIONS=439} [2024-06-27 22:02:10,680 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 113 predicate places. [2024-06-27 22:02:10,680 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 439 transitions, 6193 flow [2024-06-27 22:02:10,681 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 22:02:10,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:10,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:10,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:02:10,681 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 22:02:10,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:10,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1866251408, now seen corresponding path program 1 times [2024-06-27 22:02:10,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:10,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052725686] [2024-06-27 22:02:10,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:10,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:10,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:13,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:13,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:13,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052725686] [2024-06-27 22:02:13,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052725686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:13,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:13,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:02:13,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850507602] [2024-06-27 22:02:13,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:13,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:02:13,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:13,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:02:13,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:02:13,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 22:02:13,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 439 transitions, 6193 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 22:02:13,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:13,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 22:02:13,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:16,246 INFO L124 PetriNetUnfolderBase]: 7847/12445 cut-off events. [2024-06-27 22:02:16,251 INFO L125 PetriNetUnfolderBase]: For 179600/179617 co-relation queries the response was YES. [2024-06-27 22:02:16,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62242 conditions, 12445 events. 7847/12445 cut-off events. For 179600/179617 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 81411 event pairs, 3810 based on Foata normal form. 5/12143 useless extension candidates. Maximal degree in co-relation 62166. Up to 10665 conditions per place. [2024-06-27 22:02:16,376 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 378 selfloop transitions, 30 changer transitions 0/489 dead transitions. [2024-06-27 22:02:16,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 489 transitions, 7256 flow [2024-06-27 22:02:16,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:02:16,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:02:16,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-06-27 22:02:16,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47333333333333333 [2024-06-27 22:02:16,377 INFO L175 Difference]: Start difference. First operand has 169 places, 439 transitions, 6193 flow. Second operand 9 states and 213 transitions. [2024-06-27 22:02:16,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 489 transitions, 7256 flow [2024-06-27 22:02:16,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 489 transitions, 7096 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-27 22:02:16,737 INFO L231 Difference]: Finished difference. Result has 173 places, 448 transitions, 6216 flow [2024-06-27 22:02:16,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=6039, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6216, PETRI_PLACES=173, PETRI_TRANSITIONS=448} [2024-06-27 22:02:16,744 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 117 predicate places. [2024-06-27 22:02:16,744 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 448 transitions, 6216 flow [2024-06-27 22:02:16,744 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 22:02:16,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:16,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:16,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:02:16,745 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:02:16,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:16,745 INFO L85 PathProgramCache]: Analyzing trace with hash -961957914, now seen corresponding path program 1 times [2024-06-27 22:02:16,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:16,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658930650] [2024-06-27 22:02:16,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:16,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:16,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:18,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:18,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:18,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658930650] [2024-06-27 22:02:18,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658930650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:18,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:18,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:02:18,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830720125] [2024-06-27 22:02:18,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:18,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:02:18,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:18,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:02:18,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:02:18,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 22:02:18,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 448 transitions, 6216 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 22:02:18,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:18,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 22:02:18,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:21,042 INFO L124 PetriNetUnfolderBase]: 8260/13446 cut-off events. [2024-06-27 22:02:21,043 INFO L125 PetriNetUnfolderBase]: For 191196/191645 co-relation queries the response was YES. [2024-06-27 22:02:21,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65017 conditions, 13446 events. 8260/13446 cut-off events. For 191196/191645 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 91060 event pairs, 4055 based on Foata normal form. 102/13014 useless extension candidates. Maximal degree in co-relation 64939. Up to 11278 conditions per place. [2024-06-27 22:02:21,187 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 356 selfloop transitions, 20 changer transitions 0/472 dead transitions. [2024-06-27 22:02:21,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 472 transitions, 7078 flow [2024-06-27 22:02:21,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:02:21,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:02:21,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-27 22:02:21,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-06-27 22:02:21,188 INFO L175 Difference]: Start difference. First operand has 173 places, 448 transitions, 6216 flow. Second operand 6 states and 145 transitions. [2024-06-27 22:02:21,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 472 transitions, 7078 flow [2024-06-27 22:02:21,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 472 transitions, 6985 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-27 22:02:21,552 INFO L231 Difference]: Finished difference. Result has 173 places, 451 transitions, 6205 flow [2024-06-27 22:02:21,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=6123, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6205, PETRI_PLACES=173, PETRI_TRANSITIONS=451} [2024-06-27 22:02:21,553 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 117 predicate places. [2024-06-27 22:02:21,553 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 451 transitions, 6205 flow [2024-06-27 22:02:21,553 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 22:02:21,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:21,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:21,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:02:21,554 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 22:02:21,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:21,554 INFO L85 PathProgramCache]: Analyzing trace with hash 73666082, now seen corresponding path program 1 times [2024-06-27 22:02:21,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:21,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097414114] [2024-06-27 22:02:21,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:21,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:21,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:23,292 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 22:02:23,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:23,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097414114] [2024-06-27 22:02:23,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097414114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:23,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:23,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:02:23,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824021543] [2024-06-27 22:02:23,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:23,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:02:23,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:23,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:02:23,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:02:23,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 22:02:23,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 451 transitions, 6205 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 22:02:23,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:23,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 22:02:23,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:26,141 INFO L124 PetriNetUnfolderBase]: 7796/12284 cut-off events. [2024-06-27 22:02:26,142 INFO L125 PetriNetUnfolderBase]: For 193934/193978 co-relation queries the response was YES. [2024-06-27 22:02:26,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64358 conditions, 12284 events. 7796/12284 cut-off events. For 193934/193978 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 80298 event pairs, 3228 based on Foata normal form. 22/11963 useless extension candidates. Maximal degree in co-relation 64279. Up to 10708 conditions per place. [2024-06-27 22:02:26,244 INFO L140 encePairwiseOnDemand]: 35/50 looper letters, 469 selfloop transitions, 92 changer transitions 0/573 dead transitions. [2024-06-27 22:02:26,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 573 transitions, 8242 flow [2024-06-27 22:02:26,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 22:02:26,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 22:02:26,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 333 transitions. [2024-06-27 22:02:26,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5123076923076924 [2024-06-27 22:02:26,246 INFO L175 Difference]: Start difference. First operand has 173 places, 451 transitions, 6205 flow. Second operand 13 states and 333 transitions. [2024-06-27 22:02:26,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 573 transitions, 8242 flow [2024-06-27 22:02:26,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 573 transitions, 8190 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-27 22:02:26,577 INFO L231 Difference]: Finished difference. Result has 187 places, 495 transitions, 6920 flow [2024-06-27 22:02:26,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=6153, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6920, PETRI_PLACES=187, PETRI_TRANSITIONS=495} [2024-06-27 22:02:26,577 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 131 predicate places. [2024-06-27 22:02:26,577 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 495 transitions, 6920 flow [2024-06-27 22:02:26,578 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 22:02:26,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:26,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:26,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:02:26,578 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 22:02:26,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:26,579 INFO L85 PathProgramCache]: Analyzing trace with hash 664560962, now seen corresponding path program 1 times [2024-06-27 22:02:26,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:26,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617788369] [2024-06-27 22:02:26,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:26,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:26,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:28,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:28,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:28,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617788369] [2024-06-27 22:02:28,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617788369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:28,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:28,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:02:28,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231307090] [2024-06-27 22:02:28,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:28,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:02:28,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:28,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:02:28,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:02:28,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 22:02:28,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 495 transitions, 6920 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 22:02:28,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:28,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 22:02:28,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:31,185 INFO L124 PetriNetUnfolderBase]: 7637/12061 cut-off events. [2024-06-27 22:02:31,185 INFO L125 PetriNetUnfolderBase]: For 220569/220607 co-relation queries the response was YES. [2024-06-27 22:02:31,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66825 conditions, 12061 events. 7637/12061 cut-off events. For 220569/220607 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 78879 event pairs, 3116 based on Foata normal form. 20/11757 useless extension candidates. Maximal degree in co-relation 66741. Up to 9496 conditions per place. [2024-06-27 22:02:31,329 INFO L140 encePairwiseOnDemand]: 34/50 looper letters, 208 selfloop transitions, 347 changer transitions 0/567 dead transitions. [2024-06-27 22:02:31,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 567 transitions, 8688 flow [2024-06-27 22:02:31,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:02:31,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:02:31,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 261 transitions. [2024-06-27 22:02:31,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.522 [2024-06-27 22:02:31,331 INFO L175 Difference]: Start difference. First operand has 187 places, 495 transitions, 6920 flow. Second operand 10 states and 261 transitions. [2024-06-27 22:02:31,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 567 transitions, 8688 flow [2024-06-27 22:02:31,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 567 transitions, 8287 flow, removed 136 selfloop flow, removed 4 redundant places. [2024-06-27 22:02:31,883 INFO L231 Difference]: Finished difference. Result has 194 places, 513 transitions, 7528 flow [2024-06-27 22:02:31,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=6519, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=335, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7528, PETRI_PLACES=194, PETRI_TRANSITIONS=513} [2024-06-27 22:02:31,884 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 138 predicate places. [2024-06-27 22:02:31,884 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 513 transitions, 7528 flow [2024-06-27 22:02:31,884 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 22:02:31,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:31,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:31,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:02:31,885 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 22:02:31,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:31,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1131197184, now seen corresponding path program 2 times [2024-06-27 22:02:31,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:31,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864182918] [2024-06-27 22:02:31,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:31,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:33,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:33,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:33,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864182918] [2024-06-27 22:02:33,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864182918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:33,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:33,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:02:33,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910590003] [2024-06-27 22:02:33,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:33,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:02:33,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:33,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:02:33,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:02:34,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 22:02:34,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 513 transitions, 7528 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 22:02:34,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:34,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 22:02:34,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:36,755 INFO L124 PetriNetUnfolderBase]: 7826/12278 cut-off events. [2024-06-27 22:02:36,755 INFO L125 PetriNetUnfolderBase]: For 251878/251906 co-relation queries the response was YES. [2024-06-27 22:02:36,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71321 conditions, 12278 events. 7826/12278 cut-off events. For 251878/251906 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 79639 event pairs, 3157 based on Foata normal form. 19/11997 useless extension candidates. Maximal degree in co-relation 71236. Up to 10760 conditions per place. [2024-06-27 22:02:36,887 INFO L140 encePairwiseOnDemand]: 34/50 looper letters, 489 selfloop transitions, 90 changer transitions 0/591 dead transitions. [2024-06-27 22:02:36,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 591 transitions, 9225 flow [2024-06-27 22:02:36,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:02:36,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:02:36,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 251 transitions. [2024-06-27 22:02:36,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.502 [2024-06-27 22:02:36,889 INFO L175 Difference]: Start difference. First operand has 194 places, 513 transitions, 7528 flow. Second operand 10 states and 251 transitions. [2024-06-27 22:02:36,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 591 transitions, 9225 flow [2024-06-27 22:02:37,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 591 transitions, 8777 flow, removed 52 selfloop flow, removed 5 redundant places. [2024-06-27 22:02:37,406 INFO L231 Difference]: Finished difference. Result has 200 places, 535 transitions, 7558 flow [2024-06-27 22:02:37,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=7100, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7558, PETRI_PLACES=200, PETRI_TRANSITIONS=535} [2024-06-27 22:02:37,408 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 144 predicate places. [2024-06-27 22:02:37,408 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 535 transitions, 7558 flow [2024-06-27 22:02:37,408 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 22:02:37,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:37,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:37,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 22:02:37,408 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 22:02:37,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:37,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1767926000, now seen corresponding path program 3 times [2024-06-27 22:02:37,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:37,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24602036] [2024-06-27 22:02:37,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:37,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:37,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:39,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:39,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:39,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24602036] [2024-06-27 22:02:39,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24602036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:39,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:39,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:02:39,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798679411] [2024-06-27 22:02:39,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:39,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:02:39,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:39,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:02:39,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:02:39,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 22:02:39,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 535 transitions, 7558 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 22:02:39,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:39,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 22:02:39,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:42,651 INFO L124 PetriNetUnfolderBase]: 7984/12497 cut-off events. [2024-06-27 22:02:42,651 INFO L125 PetriNetUnfolderBase]: For 255999/256025 co-relation queries the response was YES. [2024-06-27 22:02:42,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73035 conditions, 12497 events. 7984/12497 cut-off events. For 255999/256025 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 80833 event pairs, 3160 based on Foata normal form. 17/12213 useless extension candidates. Maximal degree in co-relation 72947. Up to 10924 conditions per place. [2024-06-27 22:02:42,816 INFO L140 encePairwiseOnDemand]: 34/50 looper letters, 504 selfloop transitions, 126 changer transitions 0/642 dead transitions. [2024-06-27 22:02:42,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 642 transitions, 9757 flow [2024-06-27 22:02:42,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:02:42,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:02:42,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 251 transitions. [2024-06-27 22:02:42,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.502 [2024-06-27 22:02:42,819 INFO L175 Difference]: Start difference. First operand has 200 places, 535 transitions, 7558 flow. Second operand 10 states and 251 transitions. [2024-06-27 22:02:42,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 642 transitions, 9757 flow [2024-06-27 22:02:43,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 642 transitions, 9571 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-27 22:02:43,409 INFO L231 Difference]: Finished difference. Result has 207 places, 591 transitions, 8443 flow [2024-06-27 22:02:43,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=7420, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8443, PETRI_PLACES=207, PETRI_TRANSITIONS=591} [2024-06-27 22:02:43,410 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 151 predicate places. [2024-06-27 22:02:43,410 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 591 transitions, 8443 flow [2024-06-27 22:02:43,410 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 22:02:43,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:43,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:43,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 22:02:43,410 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 22:02:43,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:43,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1629521726, now seen corresponding path program 2 times [2024-06-27 22:02:43,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:43,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176926761] [2024-06-27 22:02:43,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:43,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:43,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:45,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:45,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:45,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176926761] [2024-06-27 22:02:45,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176926761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:45,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:45,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:02:45,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313380221] [2024-06-27 22:02:45,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:45,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:02:45,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:45,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:02:45,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:02:45,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 22:02:45,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 591 transitions, 8443 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 22:02:45,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:45,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 22:02:45,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:48,730 INFO L124 PetriNetUnfolderBase]: 8051/12658 cut-off events. [2024-06-27 22:02:48,730 INFO L125 PetriNetUnfolderBase]: For 266164/266202 co-relation queries the response was YES. [2024-06-27 22:02:48,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74561 conditions, 12658 events. 8051/12658 cut-off events. For 266164/266202 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 82592 event pairs, 3110 based on Foata normal form. 21/12351 useless extension candidates. Maximal degree in co-relation 74470. Up to 9951 conditions per place. [2024-06-27 22:02:48,868 INFO L140 encePairwiseOnDemand]: 34/50 looper letters, 313 selfloop transitions, 367 changer transitions 0/692 dead transitions. [2024-06-27 22:02:48,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 692 transitions, 10893 flow [2024-06-27 22:02:48,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:02:48,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:02:48,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 263 transitions. [2024-06-27 22:02:48,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526 [2024-06-27 22:02:48,870 INFO L175 Difference]: Start difference. First operand has 207 places, 591 transitions, 8443 flow. Second operand 10 states and 263 transitions. [2024-06-27 22:02:48,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 692 transitions, 10893 flow [2024-06-27 22:02:49,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 692 transitions, 10750 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-27 22:02:49,488 INFO L231 Difference]: Finished difference. Result has 215 places, 628 transitions, 9575 flow [2024-06-27 22:02:49,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=8300, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=330, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9575, PETRI_PLACES=215, PETRI_TRANSITIONS=628} [2024-06-27 22:02:49,489 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 159 predicate places. [2024-06-27 22:02:49,489 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 628 transitions, 9575 flow [2024-06-27 22:02:49,489 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 22:02:49,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:49,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:49,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 22:02:49,490 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 22:02:49,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:49,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1772813336, now seen corresponding path program 3 times [2024-06-27 22:02:49,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:49,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183222180] [2024-06-27 22:02:49,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:49,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:49,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:51,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:51,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:51,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183222180] [2024-06-27 22:02:51,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183222180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:51,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:51,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:02:51,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300026480] [2024-06-27 22:02:51,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:51,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:02:51,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:51,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:02:51,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:02:51,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 22:02:51,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 628 transitions, 9575 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 22:02:51,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:51,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 22:02:51,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:54,750 INFO L124 PetriNetUnfolderBase]: 8173/12846 cut-off events. [2024-06-27 22:02:54,750 INFO L125 PetriNetUnfolderBase]: For 286369/286400 co-relation queries the response was YES. [2024-06-27 22:02:54,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77893 conditions, 12846 events. 8173/12846 cut-off events. For 286369/286400 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 83886 event pairs, 3054 based on Foata normal form. 18/12539 useless extension candidates. Maximal degree in co-relation 77799. Up to 10038 conditions per place. [2024-06-27 22:02:54,874 INFO L140 encePairwiseOnDemand]: 34/50 looper letters, 338 selfloop transitions, 366 changer transitions 0/716 dead transitions. [2024-06-27 22:02:54,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 716 transitions, 12021 flow [2024-06-27 22:02:54,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:02:54,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:02:54,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 262 transitions. [2024-06-27 22:02:54,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524 [2024-06-27 22:02:54,876 INFO L175 Difference]: Start difference. First operand has 215 places, 628 transitions, 9575 flow. Second operand 10 states and 262 transitions. [2024-06-27 22:02:54,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 716 transitions, 12021 flow [2024-06-27 22:02:55,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 716 transitions, 11571 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-27 22:02:55,617 INFO L231 Difference]: Finished difference. Result has 221 places, 651 transitions, 10204 flow [2024-06-27 22:02:55,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=9147, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=343, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10204, PETRI_PLACES=221, PETRI_TRANSITIONS=651} [2024-06-27 22:02:55,618 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 165 predicate places. [2024-06-27 22:02:55,618 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 651 transitions, 10204 flow [2024-06-27 22:02:55,618 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 22:02:55,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:55,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:55,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 22:02:55,619 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 22:02:55,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:55,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1495041000, now seen corresponding path program 4 times [2024-06-27 22:02:55,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:55,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111334120] [2024-06-27 22:02:55,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:55,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:55,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:57,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:57,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:57,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111334120] [2024-06-27 22:02:57,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111334120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:57,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:57,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:02:57,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589649414] [2024-06-27 22:02:57,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:57,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:02:57,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:57,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:02:57,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:02:57,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 22:02:57,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 651 transitions, 10204 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 22:02:57,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:57,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 22:02:57,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:00,872 INFO L124 PetriNetUnfolderBase]: 8175/12849 cut-off events. [2024-06-27 22:03:00,872 INFO L125 PetriNetUnfolderBase]: For 300917/300948 co-relation queries the response was YES. [2024-06-27 22:03:00,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78525 conditions, 12849 events. 8175/12849 cut-off events. For 300917/300948 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 83816 event pairs, 3061 based on Foata normal form. 18/12542 useless extension candidates. Maximal degree in co-relation 78430. Up to 10040 conditions per place. [2024-06-27 22:03:01,032 INFO L140 encePairwiseOnDemand]: 34/50 looper letters, 338 selfloop transitions, 363 changer transitions 0/713 dead transitions. [2024-06-27 22:03:01,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 713 transitions, 12230 flow [2024-06-27 22:03:01,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:03:01,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:03:01,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 261 transitions. [2024-06-27 22:03:01,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.522 [2024-06-27 22:03:01,039 INFO L175 Difference]: Start difference. First operand has 221 places, 651 transitions, 10204 flow. Second operand 10 states and 261 transitions. [2024-06-27 22:03:01,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 713 transitions, 12230 flow [2024-06-27 22:03:01,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 713 transitions, 11624 flow, removed 50 selfloop flow, removed 5 redundant places. [2024-06-27 22:03:01,975 INFO L231 Difference]: Finished difference. Result has 226 places, 651 transitions, 10345 flow [2024-06-27 22:03:01,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=9606, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=651, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=363, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10345, PETRI_PLACES=226, PETRI_TRANSITIONS=651} [2024-06-27 22:03:01,976 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 170 predicate places. [2024-06-27 22:03:01,976 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 651 transitions, 10345 flow [2024-06-27 22:03:01,977 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 22:03:01,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:01,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:01,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 22:03:01,977 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 22:03:01,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:01,977 INFO L85 PathProgramCache]: Analyzing trace with hash -962676686, now seen corresponding path program 4 times [2024-06-27 22:03:01,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:01,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924408912] [2024-06-27 22:03:01,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:01,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:01,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:04,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:04,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:04,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924408912] [2024-06-27 22:03:04,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924408912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:04,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:04,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:03:04,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211154526] [2024-06-27 22:03:04,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:04,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:03:04,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:04,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:03:04,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:03:04,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 22:03:04,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 651 transitions, 10345 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 22:03:04,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:04,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 22:03:04,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:07,618 INFO L124 PetriNetUnfolderBase]: 8565/13206 cut-off events. [2024-06-27 22:03:07,618 INFO L125 PetriNetUnfolderBase]: For 325033/325045 co-relation queries the response was YES. [2024-06-27 22:03:07,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82086 conditions, 13206 events. 8565/13206 cut-off events. For 325033/325045 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 83931 event pairs, 2660 based on Foata normal form. 13/12942 useless extension candidates. Maximal degree in co-relation 81990. Up to 11624 conditions per place. [2024-06-27 22:03:07,792 INFO L140 encePairwiseOnDemand]: 34/50 looper letters, 595 selfloop transitions, 183 changer transitions 0/790 dead transitions. [2024-06-27 22:03:07,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 790 transitions, 13400 flow [2024-06-27 22:03:07,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:03:07,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:03:07,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 251 transitions. [2024-06-27 22:03:07,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.502 [2024-06-27 22:03:07,797 INFO L175 Difference]: Start difference. First operand has 226 places, 651 transitions, 10345 flow. Second operand 10 states and 251 transitions. [2024-06-27 22:03:07,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 790 transitions, 13400 flow [2024-06-27 22:03:08,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 790 transitions, 12608 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 22:03:08,855 INFO L231 Difference]: Finished difference. Result has 230 places, 741 transitions, 11366 flow [2024-06-27 22:03:08,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=9587, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=651, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11366, PETRI_PLACES=230, PETRI_TRANSITIONS=741} [2024-06-27 22:03:08,856 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 174 predicate places. [2024-06-27 22:03:08,856 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 741 transitions, 11366 flow [2024-06-27 22:03:08,856 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 22:03:08,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:08,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:08,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 22:03:08,857 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 22:03:08,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:08,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1560814206, now seen corresponding path program 5 times [2024-06-27 22:03:08,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:08,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581171694] [2024-06-27 22:03:08,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:08,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:08,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:11,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:11,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:11,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581171694] [2024-06-27 22:03:11,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581171694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:11,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:11,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:03:11,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513790518] [2024-06-27 22:03:11,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:11,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:03:11,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:11,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:03:11,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:03:11,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 22:03:11,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 741 transitions, 11366 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 22:03:11,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:11,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 22:03:11,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:14,798 INFO L124 PetriNetUnfolderBase]: 8753/13527 cut-off events. [2024-06-27 22:03:14,798 INFO L125 PetriNetUnfolderBase]: For 333028/333063 co-relation queries the response was YES. [2024-06-27 22:03:14,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84085 conditions, 13527 events. 8753/13527 cut-off events. For 333028/333063 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 86813 event pairs, 2602 based on Foata normal form. 27/13280 useless extension candidates. Maximal degree in co-relation 83986. Up to 10667 conditions per place. [2024-06-27 22:03:14,955 INFO L140 encePairwiseOnDemand]: 34/50 looper letters, 399 selfloop transitions, 491 changer transitions 0/902 dead transitions. [2024-06-27 22:03:14,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 902 transitions, 15031 flow [2024-06-27 22:03:14,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:03:14,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:03:14,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 263 transitions. [2024-06-27 22:03:14,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526 [2024-06-27 22:03:14,976 INFO L175 Difference]: Start difference. First operand has 230 places, 741 transitions, 11366 flow. Second operand 10 states and 263 transitions. [2024-06-27 22:03:14,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 902 transitions, 15031 flow [2024-06-27 22:03:15,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 902 transitions, 14848 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-27 22:03:15,955 INFO L231 Difference]: Finished difference. Result has 239 places, 835 transitions, 13399 flow [2024-06-27 22:03:15,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=11183, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=741, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=397, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13399, PETRI_PLACES=239, PETRI_TRANSITIONS=835} [2024-06-27 22:03:15,956 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 183 predicate places. [2024-06-27 22:03:15,956 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 835 transitions, 13399 flow [2024-06-27 22:03:15,956 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 22:03:15,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:15,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:15,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 22:03:15,956 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 22:03:15,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:15,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1565455836, now seen corresponding path program 6 times [2024-06-27 22:03:15,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:15,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119463423] [2024-06-27 22:03:15,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:15,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:15,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:18,456 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 22:03:18,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:18,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119463423] [2024-06-27 22:03:18,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119463423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:18,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:18,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:03:18,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191996057] [2024-06-27 22:03:18,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:18,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:03:18,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:18,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:03:18,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:03:18,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 22:03:18,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 835 transitions, 13399 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 22:03:18,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:18,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 22:03:18,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:22,137 INFO L124 PetriNetUnfolderBase]: 8986/13880 cut-off events. [2024-06-27 22:03:22,138 INFO L125 PetriNetUnfolderBase]: For 364003/364038 co-relation queries the response was YES. [2024-06-27 22:03:22,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88954 conditions, 13880 events. 8986/13880 cut-off events. For 364003/364038 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 89187 event pairs, 2587 based on Foata normal form. 28/13631 useless extension candidates. Maximal degree in co-relation 88852. Up to 10856 conditions per place. [2024-06-27 22:03:22,321 INFO L140 encePairwiseOnDemand]: 34/50 looper letters, 434 selfloop transitions, 503 changer transitions 0/949 dead transitions. [2024-06-27 22:03:22,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 949 transitions, 16900 flow [2024-06-27 22:03:22,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:03:22,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:03:22,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 266 transitions. [2024-06-27 22:03:22,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532 [2024-06-27 22:03:22,323 INFO L175 Difference]: Start difference. First operand has 239 places, 835 transitions, 13399 flow. Second operand 10 states and 266 transitions. [2024-06-27 22:03:22,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 949 transitions, 16900 flow [2024-06-27 22:03:23,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 949 transitions, 16202 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-27 22:03:23,556 INFO L231 Difference]: Finished difference. Result has 245 places, 877 transitions, 14416 flow [2024-06-27 22:03:23,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=12741, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=835, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=461, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14416, PETRI_PLACES=245, PETRI_TRANSITIONS=877} [2024-06-27 22:03:23,557 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 189 predicate places. [2024-06-27 22:03:23,557 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 877 transitions, 14416 flow [2024-06-27 22:03:23,558 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 22:03:23,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:23,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:23,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 22:03:23,558 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 22:03:23,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:23,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1565462346, now seen corresponding path program 7 times [2024-06-27 22:03:23,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:23,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006679461] [2024-06-27 22:03:23,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:23,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:23,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:26,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:26,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:26,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006679461] [2024-06-27 22:03:26,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006679461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:26,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:26,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:03:26,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666197461] [2024-06-27 22:03:26,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:26,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:03:26,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:26,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:03:26,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:03:26,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 22:03:26,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 877 transitions, 14416 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 22:03:26,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:26,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 22:03:26,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:29,799 INFO L124 PetriNetUnfolderBase]: 8906/13764 cut-off events. [2024-06-27 22:03:29,799 INFO L125 PetriNetUnfolderBase]: For 379440/379475 co-relation queries the response was YES. [2024-06-27 22:03:29,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88528 conditions, 13764 events. 8906/13764 cut-off events. For 379440/379475 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 88550 event pairs, 2600 based on Foata normal form. 28/13514 useless extension candidates. Maximal degree in co-relation 88425. Up to 10806 conditions per place. [2024-06-27 22:03:29,952 INFO L140 encePairwiseOnDemand]: 34/50 looper letters, 432 selfloop transitions, 509 changer transitions 0/953 dead transitions. [2024-06-27 22:03:29,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 953 transitions, 17258 flow [2024-06-27 22:03:29,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:03:29,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:03:29,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 263 transitions. [2024-06-27 22:03:29,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526 [2024-06-27 22:03:29,954 INFO L175 Difference]: Start difference. First operand has 245 places, 877 transitions, 14416 flow. Second operand 10 states and 263 transitions. [2024-06-27 22:03:29,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 953 transitions, 17258 flow [2024-06-27 22:03:31,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 953 transitions, 16457 flow, removed 85 selfloop flow, removed 5 redundant places. [2024-06-27 22:03:31,221 INFO L231 Difference]: Finished difference. Result has 250 places, 881 transitions, 14717 flow [2024-06-27 22:03:31,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=13627, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=877, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=505, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14717, PETRI_PLACES=250, PETRI_TRANSITIONS=881} [2024-06-27 22:03:31,222 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 194 predicate places. [2024-06-27 22:03:31,222 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 881 transitions, 14717 flow [2024-06-27 22:03:31,222 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 22:03:31,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:31,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:31,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 22:03:31,223 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 22:03:31,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:31,223 INFO L85 PathProgramCache]: Analyzing trace with hash -953068260, now seen corresponding path program 8 times [2024-06-27 22:03:31,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:31,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223142745] [2024-06-27 22:03:31,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:31,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:33,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:33,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:33,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223142745] [2024-06-27 22:03:33,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223142745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:33,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:33,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:03:33,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32716031] [2024-06-27 22:03:33,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:33,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:03:33,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:33,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:03:33,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:03:34,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 22:03:34,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 881 transitions, 14717 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 22:03:34,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:34,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 22:03:34,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:37,880 INFO L124 PetriNetUnfolderBase]: 9207/14187 cut-off events. [2024-06-27 22:03:37,881 INFO L125 PetriNetUnfolderBase]: For 406158/406176 co-relation queries the response was YES. [2024-06-27 22:03:37,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91596 conditions, 14187 events. 9207/14187 cut-off events. For 406158/406176 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 91088 event pairs, 2623 based on Foata normal form. 17/13924 useless extension candidates. Maximal degree in co-relation 91492. Up to 11106 conditions per place. [2024-06-27 22:03:38,041 INFO L140 encePairwiseOnDemand]: 34/50 looper letters, 429 selfloop transitions, 540 changer transitions 0/981 dead transitions. [2024-06-27 22:03:38,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 981 transitions, 18078 flow [2024-06-27 22:03:38,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:03:38,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:03:38,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 262 transitions. [2024-06-27 22:03:38,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524 [2024-06-27 22:03:38,042 INFO L175 Difference]: Start difference. First operand has 250 places, 881 transitions, 14717 flow. Second operand 10 states and 262 transitions. [2024-06-27 22:03:38,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 981 transitions, 18078 flow [2024-06-27 22:03:39,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 981 transitions, 17223 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 22:03:39,095 INFO L231 Difference]: Finished difference. Result has 255 places, 916 transitions, 15591 flow [2024-06-27 22:03:39,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=13896, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=881, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=505, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15591, PETRI_PLACES=255, PETRI_TRANSITIONS=916} [2024-06-27 22:03:39,095 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 199 predicate places. [2024-06-27 22:03:39,096 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 916 transitions, 15591 flow [2024-06-27 22:03:39,096 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 22:03:39,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:39,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:39,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 22:03:39,096 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 22:03:39,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:39,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1737952236, now seen corresponding path program 9 times [2024-06-27 22:03:39,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:39,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971668290] [2024-06-27 22:03:39,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:39,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:39,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:41,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:41,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:41,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971668290] [2024-06-27 22:03:41,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971668290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:41,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:41,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:03:41,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728414486] [2024-06-27 22:03:41,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:41,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:03:41,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:41,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:03:41,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:03:41,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 22:03:41,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 916 transitions, 15591 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 22:03:41,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:41,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 22:03:41,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:45,445 INFO L124 PetriNetUnfolderBase]: 9257/14263 cut-off events. [2024-06-27 22:03:45,445 INFO L125 PetriNetUnfolderBase]: For 426683/426701 co-relation queries the response was YES. [2024-06-27 22:03:45,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92774 conditions, 14263 events. 9257/14263 cut-off events. For 426683/426701 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 91637 event pairs, 2626 based on Foata normal form. 17/13997 useless extension candidates. Maximal degree in co-relation 92668. Up to 11157 conditions per place. [2024-06-27 22:03:45,614 INFO L140 encePairwiseOnDemand]: 34/50 looper letters, 440 selfloop transitions, 550 changer transitions 0/1002 dead transitions. [2024-06-27 22:03:45,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 1002 transitions, 18776 flow [2024-06-27 22:03:45,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:03:45,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:03:45,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 263 transitions. [2024-06-27 22:03:45,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526 [2024-06-27 22:03:45,618 INFO L175 Difference]: Start difference. First operand has 255 places, 916 transitions, 15591 flow. Second operand 10 states and 263 transitions. [2024-06-27 22:03:45,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 1002 transitions, 18776 flow [2024-06-27 22:03:46,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 1002 transitions, 17786 flow, removed 63 selfloop flow, removed 6 redundant places. [2024-06-27 22:03:46,806 INFO L231 Difference]: Finished difference. Result has 259 places, 932 transitions, 16013 flow [2024-06-27 22:03:46,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=14625, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=916, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=534, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16013, PETRI_PLACES=259, PETRI_TRANSITIONS=932} [2024-06-27 22:03:46,808 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 203 predicate places. [2024-06-27 22:03:46,809 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 932 transitions, 16013 flow [2024-06-27 22:03:46,809 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 22:03:46,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:46,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:46,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 22:03:46,809 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 22:03:46,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:46,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1738191804, now seen corresponding path program 1 times [2024-06-27 22:03:46,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:46,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557567480] [2024-06-27 22:03:46,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:46,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:46,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:49,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:49,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:49,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557567480] [2024-06-27 22:03:49,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557567480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:49,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:49,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:03:49,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840778062] [2024-06-27 22:03:49,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:49,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:03:49,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:49,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:03:49,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:03:49,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 22:03:49,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 932 transitions, 16013 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 22:03:49,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:49,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 22:03:49,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:53,046 INFO L124 PetriNetUnfolderBase]: 9912/15304 cut-off events. [2024-06-27 22:03:53,047 INFO L125 PetriNetUnfolderBase]: For 496031/496327 co-relation queries the response was YES. [2024-06-27 22:03:53,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98368 conditions, 15304 events. 9912/15304 cut-off events. For 496031/496327 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 98569 event pairs, 3661 based on Foata normal form. 137/15030 useless extension candidates. Maximal degree in co-relation 98261. Up to 13194 conditions per place. [2024-06-27 22:03:53,228 INFO L140 encePairwiseOnDemand]: 34/50 looper letters, 823 selfloop transitions, 97 changer transitions 0/1001 dead transitions. [2024-06-27 22:03:53,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 1001 transitions, 18640 flow [2024-06-27 22:03:53,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:03:53,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:03:53,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-06-27 22:03:53,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2024-06-27 22:03:53,230 INFO L175 Difference]: Start difference. First operand has 259 places, 932 transitions, 16013 flow. Second operand 9 states and 234 transitions. [2024-06-27 22:03:53,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 1001 transitions, 18640 flow [2024-06-27 22:03:54,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 1001 transitions, 17521 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-27 22:03:54,774 INFO L231 Difference]: Finished difference. Result has 263 places, 953 transitions, 15452 flow [2024-06-27 22:03:54,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=14904, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=932, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=849, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15452, PETRI_PLACES=263, PETRI_TRANSITIONS=953} [2024-06-27 22:03:54,785 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 207 predicate places. [2024-06-27 22:03:54,785 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 953 transitions, 15452 flow [2024-06-27 22:03:54,785 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 22:03:54,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:54,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:54,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 22:03:54,786 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 22:03:54,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:54,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1738182876, now seen corresponding path program 10 times [2024-06-27 22:03:54,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:54,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336797929] [2024-06-27 22:03:54,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:54,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:54,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:57,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:57,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:57,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336797929] [2024-06-27 22:03:57,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336797929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:57,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:57,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:03:57,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599173983] [2024-06-27 22:03:57,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:57,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:03:57,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:57,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:03:57,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:03:57,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 22:03:57,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 953 transitions, 15452 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 22:03:57,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:57,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 22:03:57,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:01,759 INFO L124 PetriNetUnfolderBase]: 9145/14130 cut-off events. [2024-06-27 22:04:01,759 INFO L125 PetriNetUnfolderBase]: For 462360/462421 co-relation queries the response was YES. [2024-06-27 22:04:01,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93455 conditions, 14130 events. 9145/14130 cut-off events. For 462360/462421 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 91078 event pairs, 2465 based on Foata normal form. 42/13897 useless extension candidates. Maximal degree in co-relation 93345. Up to 11025 conditions per place. [2024-06-27 22:04:02,219 INFO L140 encePairwiseOnDemand]: 34/50 looper letters, 435 selfloop transitions, 576 changer transitions 0/1024 dead transitions. [2024-06-27 22:04:02,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 1024 transitions, 18307 flow [2024-06-27 22:04:02,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:04:02,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:04:02,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 259 transitions. [2024-06-27 22:04:02,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.518 [2024-06-27 22:04:02,233 INFO L175 Difference]: Start difference. First operand has 263 places, 953 transitions, 15452 flow. Second operand 10 states and 259 transitions. [2024-06-27 22:04:02,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 1024 transitions, 18307 flow [2024-06-27 22:04:03,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 1024 transitions, 18197 flow, removed 47 selfloop flow, removed 2 redundant places. [2024-06-27 22:04:03,632 INFO L231 Difference]: Finished difference. Result has 271 places, 957 transitions, 16568 flow [2024-06-27 22:04:03,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=15342, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=953, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=572, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16568, PETRI_PLACES=271, PETRI_TRANSITIONS=957} [2024-06-27 22:04:03,633 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 215 predicate places. [2024-06-27 22:04:03,634 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 957 transitions, 16568 flow [2024-06-27 22:04:03,634 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 22:04:03,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:03,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:03,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 22:04:03,634 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:04:03,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:03,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1430600832, now seen corresponding path program 1 times [2024-06-27 22:04:03,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:03,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545345303] [2024-06-27 22:04:03,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:03,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:03,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:05,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:05,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:05,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545345303] [2024-06-27 22:04:05,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545345303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:05,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:05,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:04:05,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854405422] [2024-06-27 22:04:05,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:05,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:04:05,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:05,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:04:05,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:04:05,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 22:04:05,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 957 transitions, 16568 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 22:04:05,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:05,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 22:04:05,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:09,492 INFO L124 PetriNetUnfolderBase]: 10179/16060 cut-off events. [2024-06-27 22:04:09,493 INFO L125 PetriNetUnfolderBase]: For 560655/561494 co-relation queries the response was YES. [2024-06-27 22:04:09,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103324 conditions, 16060 events. 10179/16060 cut-off events. For 560655/561494 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 105680 event pairs, 3782 based on Foata normal form. 443/15926 useless extension candidates. Maximal degree in co-relation 103212. Up to 13681 conditions per place. [2024-06-27 22:04:09,672 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 823 selfloop transitions, 61 changer transitions 0/1003 dead transitions. [2024-06-27 22:04:09,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 1003 transitions, 18807 flow [2024-06-27 22:04:09,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:04:09,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:04:09,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-27 22:04:09,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4942857142857143 [2024-06-27 22:04:09,674 INFO L175 Difference]: Start difference. First operand has 271 places, 957 transitions, 16568 flow. Second operand 7 states and 173 transitions. [2024-06-27 22:04:09,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 1003 transitions, 18807 flow [2024-06-27 22:04:10,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 1003 transitions, 17841 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 22:04:10,977 INFO L231 Difference]: Finished difference. Result has 274 places, 978 transitions, 16047 flow [2024-06-27 22:04:10,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=15604, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=957, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=907, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16047, PETRI_PLACES=274, PETRI_TRANSITIONS=978} [2024-06-27 22:04:10,978 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 218 predicate places. [2024-06-27 22:04:10,978 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 978 transitions, 16047 flow [2024-06-27 22:04:10,979 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 22:04:10,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:10,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:10,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 22:04:10,979 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 22:04:10,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:10,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1120251658, now seen corresponding path program 1 times [2024-06-27 22:04:10,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:10,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889584097] [2024-06-27 22:04:10,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:10,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:11,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:13,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:13,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:13,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889584097] [2024-06-27 22:04:13,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889584097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:13,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:13,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:04:13,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810048403] [2024-06-27 22:04:13,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:13,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:04:13,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:13,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:04:13,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:04:13,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-27 22:04:13,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 978 transitions, 16047 flow. Second operand has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:13,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:13,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-27 22:04:13,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:17,511 INFO L124 PetriNetUnfolderBase]: 9230/14601 cut-off events. [2024-06-27 22:04:17,511 INFO L125 PetriNetUnfolderBase]: For 515005/515193 co-relation queries the response was YES. [2024-06-27 22:04:17,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95039 conditions, 14601 events. 9230/14601 cut-off events. For 515005/515193 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 97627 event pairs, 3150 based on Foata normal form. 31/14129 useless extension candidates. Maximal degree in co-relation 94924. Up to 12019 conditions per place. [2024-06-27 22:04:17,694 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 809 selfloop transitions, 209 changer transitions 0/1057 dead transitions. [2024-06-27 22:04:17,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 1057 transitions, 18807 flow [2024-06-27 22:04:17,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:04:17,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:04:17,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 261 transitions. [2024-06-27 22:04:17,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.522 [2024-06-27 22:04:17,696 INFO L175 Difference]: Start difference. First operand has 274 places, 978 transitions, 16047 flow. Second operand 10 states and 261 transitions. [2024-06-27 22:04:17,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 1057 transitions, 18807 flow [2024-06-27 22:04:19,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 1057 transitions, 18741 flow, removed 32 selfloop flow, removed 1 redundant places. [2024-06-27 22:04:19,378 INFO L231 Difference]: Finished difference. Result has 288 places, 1002 transitions, 17034 flow [2024-06-27 22:04:19,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=15981, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=978, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=772, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=17034, PETRI_PLACES=288, PETRI_TRANSITIONS=1002} [2024-06-27 22:04:19,379 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 232 predicate places. [2024-06-27 22:04:19,379 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 1002 transitions, 17034 flow [2024-06-27 22:04:19,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:19,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:19,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:19,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 22:04:19,380 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 22:04:19,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:19,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1312318060, now seen corresponding path program 5 times [2024-06-27 22:04:19,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:19,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941318794] [2024-06-27 22:04:19,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:19,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:19,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:21,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:21,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:21,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941318794] [2024-06-27 22:04:21,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941318794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:21,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:21,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:04:21,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485393695] [2024-06-27 22:04:21,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:21,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:04:21,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:21,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:04:21,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:04:21,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 22:04:21,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 1002 transitions, 17034 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 22:04:21,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:21,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 22:04:21,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:26,052 INFO L124 PetriNetUnfolderBase]: 9828/15575 cut-off events. [2024-06-27 22:04:26,053 INFO L125 PetriNetUnfolderBase]: For 573874/573964 co-relation queries the response was YES. [2024-06-27 22:04:26,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107376 conditions, 15575 events. 9828/15575 cut-off events. For 573874/573964 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 104510 event pairs, 3643 based on Foata normal form. 7/15118 useless extension candidates. Maximal degree in co-relation 107253. Up to 13414 conditions per place. [2024-06-27 22:04:26,270 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 980 selfloop transitions, 164 changer transitions 0/1161 dead transitions. [2024-06-27 22:04:26,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 1161 transitions, 21727 flow [2024-06-27 22:04:26,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:04:26,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:04:26,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 220 transitions. [2024-06-27 22:04:26,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-06-27 22:04:26,272 INFO L175 Difference]: Start difference. First operand has 288 places, 1002 transitions, 17034 flow. Second operand 9 states and 220 transitions. [2024-06-27 22:04:26,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 1161 transitions, 21727 flow [2024-06-27 22:04:28,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 1161 transitions, 21558 flow, removed 76 selfloop flow, removed 3 redundant places. [2024-06-27 22:04:28,639 INFO L231 Difference]: Finished difference. Result has 296 places, 1116 transitions, 19696 flow [2024-06-27 22:04:28,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=16817, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=998, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=834, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=19696, PETRI_PLACES=296, PETRI_TRANSITIONS=1116} [2024-06-27 22:04:28,641 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 240 predicate places. [2024-06-27 22:04:28,641 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 1116 transitions, 19696 flow [2024-06-27 22:04:28,643 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 22:04:28,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:28,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:28,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 22:04:28,643 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 22:04:28,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:28,644 INFO L85 PathProgramCache]: Analyzing trace with hash 472189586, now seen corresponding path program 11 times [2024-06-27 22:04:28,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:28,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844654981] [2024-06-27 22:04:28,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:28,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:28,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:30,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:30,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:30,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844654981] [2024-06-27 22:04:30,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844654981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:30,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:30,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:04:30,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575555564] [2024-06-27 22:04:30,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:30,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:04:30,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:30,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:04:30,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:04:30,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 22:04:30,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 1116 transitions, 19696 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 22:04:30,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:30,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 22:04:30,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:35,420 INFO L124 PetriNetUnfolderBase]: 10323/16321 cut-off events. [2024-06-27 22:04:35,420 INFO L125 PetriNetUnfolderBase]: For 601291/601386 co-relation queries the response was YES. [2024-06-27 22:04:35,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112917 conditions, 16321 events. 10323/16321 cut-off events. For 601291/601386 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 109891 event pairs, 3636 based on Foata normal form. 26/15872 useless extension candidates. Maximal degree in co-relation 112791. Up to 13153 conditions per place. [2024-06-27 22:04:35,812 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 838 selfloop transitions, 506 changer transitions 0/1361 dead transitions. [2024-06-27 22:04:35,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 1361 transitions, 25620 flow [2024-06-27 22:04:35,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:04:35,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:04:35,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-27 22:04:35,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5088888888888888 [2024-06-27 22:04:35,814 INFO L175 Difference]: Start difference. First operand has 296 places, 1116 transitions, 19696 flow. Second operand 9 states and 229 transitions. [2024-06-27 22:04:35,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 1361 transitions, 25620 flow [2024-06-27 22:04:37,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 1361 transitions, 25180 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-27 22:04:38,002 INFO L231 Difference]: Finished difference. Result has 301 places, 1304 transitions, 23502 flow [2024-06-27 22:04:38,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=19256, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=318, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=624, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=23502, PETRI_PLACES=301, PETRI_TRANSITIONS=1304} [2024-06-27 22:04:38,003 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 245 predicate places. [2024-06-27 22:04:38,003 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 1304 transitions, 23502 flow [2024-06-27 22:04:38,003 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 22:04:38,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:38,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:38,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 22:04:38,004 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 22:04:38,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:38,004 INFO L85 PathProgramCache]: Analyzing trace with hash 476837726, now seen corresponding path program 12 times [2024-06-27 22:04:38,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:38,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125070816] [2024-06-27 22:04:38,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:38,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:38,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:39,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:39,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:39,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125070816] [2024-06-27 22:04:39,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125070816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:39,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:39,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:04:39,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648525694] [2024-06-27 22:04:39,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:39,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:04:39,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:39,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:04:39,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:04:39,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-27 22:04:39,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 1304 transitions, 23502 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 22:04:39,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:39,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-27 22:04:39,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand