./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi003_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/mutex-meet/rfi003_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 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/rfi003_tso.i ./goblint.2024-05-07_14-17-48.files/mutex-meet/rfi003_tso.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-b44c828-m [2024-05-12 10:34:32,880 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 10:34:32,949 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 10:34:32,953 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 10:34:32,953 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 10:34:32,976 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 10:34:32,980 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 10:34:32,980 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 10:34:32,981 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 10:34:32,984 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 10:34:32,984 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 10:34:32,984 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 10:34:32,985 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 10:34:32,986 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 10:34:32,986 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 10:34:32,986 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 10:34:32,986 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 10:34:32,987 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 10:34:32,987 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 10:34:32,987 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 10:34:32,987 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 10:34:32,988 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 10:34:32,988 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 10:34:32,988 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 10:34:32,988 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 10:34:32,988 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 10:34:32,989 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 10:34:32,989 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 10:34:32,989 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 10:34:32,990 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 10:34:32,990 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 10:34:32,991 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 10:34:32,991 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 10:34:32,991 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 10:34:32,991 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 10:34:32,991 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 10:34:32,991 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 10:34:32,992 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 10:34:32,992 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 10:34:32,992 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 10:34:32,992 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 10:34:32,992 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 10:34:32,992 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 10:34:32,993 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 10:34:33,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 10:34:33,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 10:34:33,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 10:34:33,218 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 10:34:33,219 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 10:34:33,219 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/mutex-meet/rfi003_tso.yml/witness.yml [2024-05-12 10:34:33,395 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 10:34:33,395 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 10:34:33,396 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi003_tso.i [2024-05-12 10:34:34,432 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 10:34:34,678 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 10:34:34,678 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi003_tso.i [2024-05-12 10:34:34,695 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00d1b8be7/7dcfe1023c16461191ea5607db42481b/FLAGb69e11d1a [2024-05-12 10:34:34,707 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00d1b8be7/7dcfe1023c16461191ea5607db42481b [2024-05-12 10:34:34,707 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 10:34:34,708 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 10:34:34,712 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 10:34:34,712 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 10:34:34,715 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 10:34:34,716 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 10:34:33" (1/2) ... [2024-05-12 10:34:34,718 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12864db6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:34:34, skipping insertion in model container [2024-05-12 10:34:34,718 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 10:34:33" (1/2) ... [2024-05-12 10:34:34,720 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6c305388 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:34:34, skipping insertion in model container [2024-05-12 10:34:34,720 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 10:34:34" (2/2) ... [2024-05-12 10:34:34,720 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12864db6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:34:34, skipping insertion in model container [2024-05-12 10:34:34,720 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 10:34:34" (2/2) ... [2024-05-12 10:34:34,721 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 10:34:34,776 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 10:34:34,776 INFO L97 edCorrectnessWitness]: Location invariant before [L838-L838] ((((((((((((((((! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 127) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff0_thd1 >= 0LL && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) + (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) + (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff1_thd1) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p0_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p1_EBX >= 0LL) && (long long )__unbuffered_cnt + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x >= 0LL) && (long long )__unbuffered_cnt + (long long )y >= 0LL) && (long long )__unbuffered_cnt + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_cnt + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_cnt + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_cnt + (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p1_EBX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )__unbuffered_p1_EBX >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )weak$$choice2 >= 0LL) && (long long )main$tmp_guard1 + (long long )x >= 0LL) && (long long )main$tmp_guard1 + (long long )y >= 0LL) && (long long )main$tmp_guard1 + (long long )y$flush_delayed >= 0LL) && (long long )main$tmp_guard1 + (long long )y$mem_tmp >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$read_delayed >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff1 >= 0LL) && (long long )main$tmp_guard1 + (long long )weak$$choice0 >= 0LL) && (long long )main$tmp_guard1 + (long long )weak$$choice2 >= 0LL) && (long long )x + (long long )y >= 0LL) && (long long )x + (long long )y$flush_delayed >= 0LL) && (long long )x + (long long )y$mem_tmp >= 0LL) && (long long )x + (long long )y$r_buff0_thd0 >= 0LL) && (long long )x + (long long )y$r_buff0_thd1 >= 0LL) && (long long )x + (long long )y$r_buff1_thd0 >= 0LL) && (long long )x + (long long )y$r_buff1_thd1 >= 0LL) && (long long )x + (long long )y$read_delayed >= 0LL) && (long long )x + (long long )y$w_buff0 >= 0LL) && (long long )x + (long long )y$w_buff1 >= 0LL) && (long long )y + (long long )y$flush_delayed >= 0LL) && (long long )y + (long long )y$mem_tmp >= 0LL) && (long long )y + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y + (long long )y$read_delayed >= 0LL) && (long long )y + (long long )y$w_buff0 >= 0LL) && (long long )y + (long long )y$w_buff1 >= 0LL) && (long long )y$flush_delayed + (long long )y$mem_tmp >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$flush_delayed + (long long )y$read_delayed >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff1 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$mem_tmp + (long long )y$read_delayed >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff1 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1 >= 0LL) && (long long )weak$$choice0 + (long long )x >= 0LL) && (long long )weak$$choice0 + (long long )y >= 0LL) && (long long )weak$$choice0 + (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice0 + (long long )y$mem_tmp >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )y$read_delayed >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff1 >= 0LL) && (long long )weak$$choice0 + (long long )weak$$choice2 >= 0LL) && (long long )weak$$choice2 + (long long )x >= 0LL) && (long long )weak$$choice2 + (long long )y >= 0LL) && (long long )weak$$choice2 + (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice2 + (long long )y$mem_tmp >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )y$read_delayed >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff0_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd1) - (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) - (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd0) - (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd1) - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$read_delayed >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$read_delayed >= 0LL) && (long long )x - (long long )y$r_buff0_thd0 >= 0LL) && (long long )x - (long long )y$r_buff0_thd1 >= 0LL) && (long long )x - (long long )y$r_buff1_thd0 >= 0LL) && (long long )x - (long long )y$r_buff1_thd1 >= 0LL) && (long long )x - (long long )y$read_delayed >= 0LL) && (long long )y - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y - (long long )y$r_buff0_thd1 >= 0LL) && (long long )y - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y - (long long )y$read_delayed >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$flush_delayed - (long long )y$read_delayed >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$mem_tmp - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd0 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff1_thd0 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd1 - (long long )y$read_delayed >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )weak$$choice0 - (long long )y$read_delayed >= 0LL) && (long long )weak$$choice2 - (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )weak$$choice2 - (long long )y$read_delayed >= 0LL))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && 0 <= __unbuffered_p0_EAX) && 0 <= __unbuffered_p1_EAX) && 0 <= __unbuffered_p1_EBX) && 0 <= x) && 0 <= y) && 0 <= y$mem_tmp) && 0 <= y$w_buff0) && 0 <= y$w_buff1) && __unbuffered_p0_EAX <= 1) && __unbuffered_p1_EAX <= 127) && __unbuffered_p1_EBX <= 127) && x <= 1) && y <= 127) && y$mem_tmp <= 127) && y$w_buff0 <= 1) && y$w_buff1 <= 1) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (x == 0 || x == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || ((0 <= y && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 127) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-05-12 10:34:34,777 INFO L97 edCorrectnessWitness]: Location invariant before [L839-L839] ((((((((((((((((! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 127) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff0_thd1 >= 0LL && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) + (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) + (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff1_thd1) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p0_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p1_EBX >= 0LL) && (long long )__unbuffered_cnt + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x >= 0LL) && (long long )__unbuffered_cnt + (long long )y >= 0LL) && (long long )__unbuffered_cnt + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_cnt + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_cnt + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_cnt + (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p1_EBX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )__unbuffered_p1_EBX >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )weak$$choice2 >= 0LL) && (long long )main$tmp_guard1 + (long long )x >= 0LL) && (long long )main$tmp_guard1 + (long long )y >= 0LL) && (long long )main$tmp_guard1 + (long long )y$flush_delayed >= 0LL) && (long long )main$tmp_guard1 + (long long )y$mem_tmp >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$read_delayed >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff1 >= 0LL) && (long long )main$tmp_guard1 + (long long )weak$$choice0 >= 0LL) && (long long )main$tmp_guard1 + (long long )weak$$choice2 >= 0LL) && (long long )x + (long long )y >= 0LL) && (long long )x + (long long )y$flush_delayed >= 0LL) && (long long )x + (long long )y$mem_tmp >= 0LL) && (long long )x + (long long )y$r_buff0_thd0 >= 0LL) && (long long )x + (long long )y$r_buff0_thd1 >= 0LL) && (long long )x + (long long )y$r_buff1_thd0 >= 0LL) && (long long )x + (long long )y$r_buff1_thd1 >= 0LL) && (long long )x + (long long )y$read_delayed >= 0LL) && (long long )x + (long long )y$w_buff0 >= 0LL) && (long long )x + (long long )y$w_buff1 >= 0LL) && (long long )y + (long long )y$flush_delayed >= 0LL) && (long long )y + (long long )y$mem_tmp >= 0LL) && (long long )y + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y + (long long )y$read_delayed >= 0LL) && (long long )y + (long long )y$w_buff0 >= 0LL) && (long long )y + (long long )y$w_buff1 >= 0LL) && (long long )y$flush_delayed + (long long )y$mem_tmp >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$flush_delayed + (long long )y$read_delayed >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff1 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$mem_tmp + (long long )y$read_delayed >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff1 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1 >= 0LL) && (long long )weak$$choice0 + (long long )x >= 0LL) && (long long )weak$$choice0 + (long long )y >= 0LL) && (long long )weak$$choice0 + (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice0 + (long long )y$mem_tmp >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )y$read_delayed >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff1 >= 0LL) && (long long )weak$$choice0 + (long long )weak$$choice2 >= 0LL) && (long long )weak$$choice2 + (long long )x >= 0LL) && (long long )weak$$choice2 + (long long )y >= 0LL) && (long long )weak$$choice2 + (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice2 + (long long )y$mem_tmp >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )y$read_delayed >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff0_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd1) - (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) - (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd0) - (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd1) - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$read_delayed >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$read_delayed >= 0LL) && (long long )x - (long long )y$r_buff0_thd0 >= 0LL) && (long long )x - (long long )y$r_buff0_thd1 >= 0LL) && (long long )x - (long long )y$r_buff1_thd0 >= 0LL) && (long long )x - (long long )y$r_buff1_thd1 >= 0LL) && (long long )x - (long long )y$read_delayed >= 0LL) && (long long )y - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y - (long long )y$r_buff0_thd1 >= 0LL) && (long long )y - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y - (long long )y$read_delayed >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$flush_delayed - (long long )y$read_delayed >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$mem_tmp - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd0 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff1_thd0 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd1 - (long long )y$read_delayed >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )weak$$choice0 - (long long )y$read_delayed >= 0LL) && (long long )weak$$choice2 - (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )weak$$choice2 - (long long )y$read_delayed >= 0LL))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && 0 <= __unbuffered_p0_EAX) && 0 <= __unbuffered_p1_EAX) && 0 <= __unbuffered_p1_EBX) && 0 <= x) && 0 <= y) && 0 <= y$mem_tmp) && 0 <= y$w_buff0) && 0 <= y$w_buff1) && __unbuffered_p0_EAX <= 1) && __unbuffered_p1_EAX <= 127) && __unbuffered_p1_EBX <= 127) && x <= 1) && y <= 127) && y$mem_tmp <= 127) && y$w_buff0 <= 1) && y$w_buff1 <= 1) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (x == 0 || x == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || ((0 <= y && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 127) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-05-12 10:34:34,777 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 10:34:34,777 INFO L106 edCorrectnessWitness]: ghost_update [L836-L836] multithreaded = 1; [2024-05-12 10:34:34,814 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 10:34:34,966 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi003_tso.i[944,957] [2024-05-12 10:34:35,120 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 10:34:35,157 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-05-12 10:34:35,188 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi003_tso.i[944,957] Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 10:34:35,390 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 10:34:35,424 INFO L206 MainTranslator]: Completed translation [2024-05-12 10:34:35,425 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:34:35 WrapperNode [2024-05-12 10:34:35,425 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 10:34:35,426 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 10:34:35,426 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 10:34:35,426 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 10:34:35,431 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:34:35" (1/1) ... [2024-05-12 10:34:35,459 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:34:35" (1/1) ... [2024-05-12 10:34:35,544 INFO L138 Inliner]: procedures = 175, calls = 47, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 175 [2024-05-12 10:34:35,545 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 10:34:35,546 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 10:34:35,546 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 10:34:35,546 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 10:34:35,555 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:34:35" (1/1) ... [2024-05-12 10:34:35,555 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:34:35" (1/1) ... [2024-05-12 10:34:35,563 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:34:35" (1/1) ... [2024-05-12 10:34:35,608 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-05-12 10:34:35,616 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:34:35" (1/1) ... [2024-05-12 10:34:35,616 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:34:35" (1/1) ... [2024-05-12 10:34:35,638 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:34:35" (1/1) ... [2024-05-12 10:34:35,653 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:34:35" (1/1) ... [2024-05-12 10:34:35,662 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:34:35" (1/1) ... [2024-05-12 10:34:35,665 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:34:35" (1/1) ... [2024-05-12 10:34:35,684 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 10:34:35,685 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 10:34:35,685 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 10:34:35,685 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 10:34:35,685 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:34:35" (1/1) ... [2024-05-12 10:34:35,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 10:34:35,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 10:34:35,761 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) [2024-05-12 10:34:35,794 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 [2024-05-12 10:34:35,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 10:34:35,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 10:34:35,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 10:34:35,819 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 10:34:35,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 10:34:35,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 10:34:35,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 10:34:35,820 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-05-12 10:34:35,820 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-05-12 10:34:35,820 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-05-12 10:34:35,820 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-05-12 10:34:35,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 10:34:35,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 10:34:35,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 10:34:35,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 10:34:35,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 10:34:35,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 10:34:35,824 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 10:34:35,960 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 10:34:35,962 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 10:34:36,519 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 10:34:36,519 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 10:34:36,698 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 10:34:36,698 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 10:34:36,700 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 10:34:36 BoogieIcfgContainer [2024-05-12 10:34:36,700 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 10:34:36,702 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 10:34:36,702 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 10:34:36,704 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 10:34:36,704 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 10:34:33" (1/4) ... [2024-05-12 10:34:36,708 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b216737 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 10:34:36, skipping insertion in model container [2024-05-12 10:34:36,709 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 10:34:34" (2/4) ... [2024-05-12 10:34:36,709 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b216737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 10:34:36, skipping insertion in model container [2024-05-12 10:34:36,709 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:34:35" (3/4) ... [2024-05-12 10:34:36,709 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b216737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 10:34:36, skipping insertion in model container [2024-05-12 10:34:36,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 10:34:36" (4/4) ... [2024-05-12 10:34:36,710 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi003_tso.i [2024-05-12 10:34:36,724 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 10:34:36,724 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-05-12 10:34:36,724 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 10:34:36,789 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 10:34:36,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 39 transitions, 86 flow [2024-05-12 10:34:36,863 INFO L124 PetriNetUnfolderBase]: 1/37 cut-off events. [2024-05-12 10:34:36,865 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 10:34:36,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 37 events. 1/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 57 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2024-05-12 10:34:36,883 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 39 transitions, 86 flow [2024-05-12 10:34:36,901 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 37 transitions, 80 flow [2024-05-12 10:34:36,911 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 10:34:36,933 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;@4a7d2849, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 10:34:36,933 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-05-12 10:34:36,939 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 10:34:36,939 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 10:34:36,940 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 10:34:36,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:34:36,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 10:34:36,941 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:34:36,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:34:36,946 INFO L85 PathProgramCache]: Analyzing trace with hash -733409672, now seen corresponding path program 1 times [2024-05-12 10:34:36,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:34:36,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454929002] [2024-05-12 10:34:36,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:34:36,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:34:37,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:34:39,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:34:39,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:34:39,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454929002] [2024-05-12 10:34:39,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454929002] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:34:39,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:34:39,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 10:34:39,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990748764] [2024-05-12 10:34:39,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:34:39,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 10:34:39,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:34:39,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 10:34:39,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 10:34:39,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-05-12 10:34:39,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:34:39,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:34:39,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-05-12 10:34:39,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:34:40,302 INFO L124 PetriNetUnfolderBase]: 708/1182 cut-off events. [2024-05-12 10:34:40,302 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-05-12 10:34:40,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2365 conditions, 1182 events. 708/1182 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5944 event pairs, 311 based on Foata normal form. 55/1180 useless extension candidates. Maximal degree in co-relation 2351. Up to 1153 conditions per place. [2024-05-12 10:34:40,309 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 36 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2024-05-12 10:34:40,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 47 transitions, 181 flow [2024-05-12 10:34:40,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 10:34:40,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 10:34:40,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-05-12 10:34:40,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6239316239316239 [2024-05-12 10:34:40,319 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 80 flow. Second operand 3 states and 73 transitions. [2024-05-12 10:34:40,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 47 transitions, 181 flow [2024-05-12 10:34:40,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 47 transitions, 178 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 10:34:40,323 INFO L231 Difference]: Finished difference. Result has 44 places, 38 transitions, 97 flow [2024-05-12 10:34:40,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2024-05-12 10:34:40,327 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2024-05-12 10:34:40,327 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 97 flow [2024-05-12 10:34:40,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:34:40,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:34:40,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:34:40,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 10:34:40,328 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:34:40,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:34:40,328 INFO L85 PathProgramCache]: Analyzing trace with hash -432030569, now seen corresponding path program 1 times [2024-05-12 10:34:40,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:34:40,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642886891] [2024-05-12 10:34:40,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:34:40,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:34:40,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:34:42,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:34:42,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:34:42,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642886891] [2024-05-12 10:34:42,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642886891] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:34:42,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:34:42,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 10:34:42,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160917482] [2024-05-12 10:34:42,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:34:42,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 10:34:42,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:34:42,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 10:34:42,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 10:34:42,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-05-12 10:34:42,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:34:42,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:34:42,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-05-12 10:34:42,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:34:42,709 INFO L124 PetriNetUnfolderBase]: 699/1305 cut-off events. [2024-05-12 10:34:42,709 INFO L125 PetriNetUnfolderBase]: For 159/159 co-relation queries the response was YES. [2024-05-12 10:34:42,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2661 conditions, 1305 events. 699/1305 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 7205 event pairs, 383 based on Foata normal form. 6/1214 useless extension candidates. Maximal degree in co-relation 2646. Up to 1102 conditions per place. [2024-05-12 10:34:42,715 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 43 selfloop transitions, 7 changer transitions 0/58 dead transitions. [2024-05-12 10:34:42,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 58 transitions, 249 flow [2024-05-12 10:34:42,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 10:34:42,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 10:34:42,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 90 transitions. [2024-05-12 10:34:42,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5769230769230769 [2024-05-12 10:34:42,717 INFO L175 Difference]: Start difference. First operand has 44 places, 38 transitions, 97 flow. Second operand 4 states and 90 transitions. [2024-05-12 10:34:42,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 58 transitions, 249 flow [2024-05-12 10:34:42,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 58 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 10:34:42,719 INFO L231 Difference]: Finished difference. Result has 48 places, 44 transitions, 148 flow [2024-05-12 10:34:42,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=48, PETRI_TRANSITIONS=44} [2024-05-12 10:34:42,719 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 5 predicate places. [2024-05-12 10:34:42,720 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 44 transitions, 148 flow [2024-05-12 10:34:42,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:34:42,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:34:42,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:34:42,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 10:34:42,720 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:34:42,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:34:42,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1417109392, now seen corresponding path program 1 times [2024-05-12 10:34:42,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:34:42,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948658365] [2024-05-12 10:34:42,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:34:42,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:34:42,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:34:42,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:34:42,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:34:42,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948658365] [2024-05-12 10:34:42,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948658365] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:34:42,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:34:42,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 10:34:42,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676592755] [2024-05-12 10:34:42,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:34:42,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 10:34:42,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:34:42,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 10:34:42,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 10:34:42,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2024-05-12 10:34:42,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 44 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:34:42,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:34:42,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2024-05-12 10:34:42,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:34:42,970 INFO L124 PetriNetUnfolderBase]: 312/662 cut-off events. [2024-05-12 10:34:42,970 INFO L125 PetriNetUnfolderBase]: For 46/49 co-relation queries the response was YES. [2024-05-12 10:34:42,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1327 conditions, 662 events. 312/662 cut-off events. For 46/49 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3777 event pairs, 45 based on Foata normal form. 3/636 useless extension candidates. Maximal degree in co-relation 1309. Up to 440 conditions per place. [2024-05-12 10:34:42,973 INFO L140 encePairwiseOnDemand]: 36/39 looper letters, 30 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2024-05-12 10:34:42,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 52 transitions, 230 flow [2024-05-12 10:34:42,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 10:34:42,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 10:34:42,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-05-12 10:34:42,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6752136752136753 [2024-05-12 10:34:42,977 INFO L175 Difference]: Start difference. First operand has 48 places, 44 transitions, 148 flow. Second operand 3 states and 79 transitions. [2024-05-12 10:34:42,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 52 transitions, 230 flow [2024-05-12 10:34:42,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 52 transitions, 228 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-05-12 10:34:42,980 INFO L231 Difference]: Finished difference. Result has 49 places, 43 transitions, 148 flow [2024-05-12 10:34:42,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=49, PETRI_TRANSITIONS=43} [2024-05-12 10:34:42,981 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 6 predicate places. [2024-05-12 10:34:42,981 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 43 transitions, 148 flow [2024-05-12 10:34:42,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:34:42,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:34:42,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:34:42,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 10:34:42,982 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:34:42,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:34:42,983 INFO L85 PathProgramCache]: Analyzing trace with hash 979615315, now seen corresponding path program 1 times [2024-05-12 10:34:42,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:34:42,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124659330] [2024-05-12 10:34:42,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:34:42,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:34:43,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:34:46,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:34:46,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:34:46,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124659330] [2024-05-12 10:34:46,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124659330] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:34:46,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:34:46,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 10:34:46,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221731823] [2024-05-12 10:34:46,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:34:46,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 10:34:46,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:34:46,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 10:34:46,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-05-12 10:34:46,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:34:46,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 148 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:34:46,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:34:46,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:34:46,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:34:46,938 INFO L124 PetriNetUnfolderBase]: 825/1520 cut-off events. [2024-05-12 10:34:46,938 INFO L125 PetriNetUnfolderBase]: For 488/488 co-relation queries the response was YES. [2024-05-12 10:34:46,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3417 conditions, 1520 events. 825/1520 cut-off events. For 488/488 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 8142 event pairs, 478 based on Foata normal form. 1/1464 useless extension candidates. Maximal degree in co-relation 3397. Up to 1321 conditions per place. [2024-05-12 10:34:46,945 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 44 selfloop transitions, 8 changer transitions 3/61 dead transitions. [2024-05-12 10:34:46,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 61 transitions, 302 flow [2024-05-12 10:34:46,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 10:34:46,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 10:34:46,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 91 transitions. [2024-05-12 10:34:46,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-05-12 10:34:46,946 INFO L175 Difference]: Start difference. First operand has 49 places, 43 transitions, 148 flow. Second operand 5 states and 91 transitions. [2024-05-12 10:34:46,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 61 transitions, 302 flow [2024-05-12 10:34:46,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 61 transitions, 296 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 10:34:46,949 INFO L231 Difference]: Finished difference. Result has 52 places, 44 transitions, 174 flow [2024-05-12 10:34:46,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=174, PETRI_PLACES=52, PETRI_TRANSITIONS=44} [2024-05-12 10:34:46,950 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places. [2024-05-12 10:34:46,950 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 44 transitions, 174 flow [2024-05-12 10:34:46,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:34:46,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:34:46,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:34:46,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 10:34:46,951 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:34:46,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:34:46,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1920764031, now seen corresponding path program 1 times [2024-05-12 10:34:46,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:34:46,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72150758] [2024-05-12 10:34:46,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:34:46,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:34:46,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:34:49,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:34:49,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:34:49,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72150758] [2024-05-12 10:34:49,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72150758] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:34:49,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:34:49,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:34:49,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445181282] [2024-05-12 10:34:49,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:34:49,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:34:49,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:34:49,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:34:49,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:34:49,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-05-12 10:34:49,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 44 transitions, 174 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:34:49,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:34:49,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-05-12 10:34:49,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:34:50,173 INFO L124 PetriNetUnfolderBase]: 627/1186 cut-off events. [2024-05-12 10:34:50,173 INFO L125 PetriNetUnfolderBase]: For 679/679 co-relation queries the response was YES. [2024-05-12 10:34:50,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2803 conditions, 1186 events. 627/1186 cut-off events. For 679/679 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6338 event pairs, 139 based on Foata normal form. 4/1140 useless extension candidates. Maximal degree in co-relation 2781. Up to 948 conditions per place. [2024-05-12 10:34:50,179 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 53 selfloop transitions, 12 changer transitions 0/72 dead transitions. [2024-05-12 10:34:50,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 72 transitions, 374 flow [2024-05-12 10:34:50,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:34:50,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:34:50,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 117 transitions. [2024-05-12 10:34:50,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-05-12 10:34:50,181 INFO L175 Difference]: Start difference. First operand has 52 places, 44 transitions, 174 flow. Second operand 6 states and 117 transitions. [2024-05-12 10:34:50,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 72 transitions, 374 flow [2024-05-12 10:34:50,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 72 transitions, 360 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-05-12 10:34:50,183 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 215 flow [2024-05-12 10:34:50,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=215, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-05-12 10:34:50,184 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 11 predicate places. [2024-05-12 10:34:50,184 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 215 flow [2024-05-12 10:34:50,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:34:50,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:34:50,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:34:50,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 10:34:50,185 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:34:50,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:34:50,185 INFO L85 PathProgramCache]: Analyzing trace with hash 303304447, now seen corresponding path program 1 times [2024-05-12 10:34:50,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:34:50,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433207524] [2024-05-12 10:34:50,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:34:50,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:34:50,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:34:53,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:34:53,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:34:53,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433207524] [2024-05-12 10:34:53,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433207524] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:34:53,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:34:53,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:34:53,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18314614] [2024-05-12 10:34:53,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:34:53,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:34:53,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:34:53,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:34:53,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:34:53,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:34:53,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 215 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:34:53,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:34:53,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:34:53,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:34:54,167 INFO L124 PetriNetUnfolderBase]: 722/1353 cut-off events. [2024-05-12 10:34:54,167 INFO L125 PetriNetUnfolderBase]: For 1132/1132 co-relation queries the response was YES. [2024-05-12 10:34:54,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3401 conditions, 1353 events. 722/1353 cut-off events. For 1132/1132 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 7127 event pairs, 290 based on Foata normal form. 1/1298 useless extension candidates. Maximal degree in co-relation 3378. Up to 1147 conditions per place. [2024-05-12 10:34:54,176 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 54 selfloop transitions, 10 changer transitions 0/70 dead transitions. [2024-05-12 10:34:54,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 70 transitions, 401 flow [2024-05-12 10:34:54,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:34:54,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:34:54,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2024-05-12 10:34:54,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44017094017094016 [2024-05-12 10:34:54,180 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 215 flow. Second operand 6 states and 103 transitions. [2024-05-12 10:34:54,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 70 transitions, 401 flow [2024-05-12 10:34:54,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 70 transitions, 376 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-05-12 10:34:54,187 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 227 flow [2024-05-12 10:34:54,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=227, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2024-05-12 10:34:54,190 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 14 predicate places. [2024-05-12 10:34:54,190 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 227 flow [2024-05-12 10:34:54,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:34:54,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:34:54,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:34:54,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 10:34:54,191 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:34:54,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:34:54,192 INFO L85 PathProgramCache]: Analyzing trace with hash 805827890, now seen corresponding path program 1 times [2024-05-12 10:34:54,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:34:54,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525306455] [2024-05-12 10:34:54,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:34:54,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:34:54,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:34:57,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:34:57,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:34:57,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525306455] [2024-05-12 10:34:57,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525306455] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:34:57,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:34:57,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:34:57,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502040052] [2024-05-12 10:34:57,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:34:57,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:34:57,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:34:57,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:34:57,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:34:57,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:34:57,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 227 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:34:57,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:34:57,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:34:57,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:34:58,241 INFO L124 PetriNetUnfolderBase]: 742/1387 cut-off events. [2024-05-12 10:34:58,242 INFO L125 PetriNetUnfolderBase]: For 1467/1467 co-relation queries the response was YES. [2024-05-12 10:34:58,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3608 conditions, 1387 events. 742/1387 cut-off events. For 1467/1467 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 7341 event pairs, 237 based on Foata normal form. 2/1332 useless extension candidates. Maximal degree in co-relation 3583. Up to 1122 conditions per place. [2024-05-12 10:34:58,250 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 58 selfloop transitions, 16 changer transitions 0/80 dead transitions. [2024-05-12 10:34:58,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 80 transitions, 478 flow [2024-05-12 10:34:58,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:34:58,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:34:58,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-05-12 10:34:58,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-05-12 10:34:58,252 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 227 flow. Second operand 6 states and 108 transitions. [2024-05-12 10:34:58,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 80 transitions, 478 flow [2024-05-12 10:34:58,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 80 transitions, 454 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-05-12 10:34:58,256 INFO L231 Difference]: Finished difference. Result has 60 places, 59 transitions, 304 flow [2024-05-12 10:34:58,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=304, PETRI_PLACES=60, PETRI_TRANSITIONS=59} [2024-05-12 10:34:58,258 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 17 predicate places. [2024-05-12 10:34:58,258 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 59 transitions, 304 flow [2024-05-12 10:34:58,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:34:58,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:34:58,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:34:58,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 10:34:58,259 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:34:58,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:34:58,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1872429080, now seen corresponding path program 2 times [2024-05-12 10:34:58,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:34:58,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035907267] [2024-05-12 10:34:58,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:34:58,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:34:58,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:35:02,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:35:02,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:35:02,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035907267] [2024-05-12 10:35:02,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035907267] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:35:02,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:35:02,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:35:02,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724127201] [2024-05-12 10:35:02,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:35:02,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:35:02,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:35:02,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:35:02,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:35:02,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:35:02,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 59 transitions, 304 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:35:02,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:35:02,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:35:02,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:35:02,573 INFO L124 PetriNetUnfolderBase]: 738/1384 cut-off events. [2024-05-12 10:35:02,573 INFO L125 PetriNetUnfolderBase]: For 1946/1949 co-relation queries the response was YES. [2024-05-12 10:35:02,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3830 conditions, 1384 events. 738/1384 cut-off events. For 1946/1949 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 7330 event pairs, 246 based on Foata normal form. 4/1329 useless extension candidates. Maximal degree in co-relation 3803. Up to 1119 conditions per place. [2024-05-12 10:35:02,580 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 55 selfloop transitions, 16 changer transitions 0/77 dead transitions. [2024-05-12 10:35:02,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 77 transitions, 484 flow [2024-05-12 10:35:02,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:35:02,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:35:02,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-05-12 10:35:02,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44871794871794873 [2024-05-12 10:35:02,585 INFO L175 Difference]: Start difference. First operand has 60 places, 59 transitions, 304 flow. Second operand 6 states and 105 transitions. [2024-05-12 10:35:02,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 77 transitions, 484 flow [2024-05-12 10:35:02,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 77 transitions, 466 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-05-12 10:35:02,588 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 324 flow [2024-05-12 10:35:02,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=324, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2024-05-12 10:35:02,590 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 22 predicate places. [2024-05-12 10:35:02,591 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 324 flow [2024-05-12 10:35:02,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:35:02,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:35:02,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:35:02,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 10:35:02,591 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:35:02,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:35:02,592 INFO L85 PathProgramCache]: Analyzing trace with hash 812504050, now seen corresponding path program 1 times [2024-05-12 10:35:02,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:35:02,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964966808] [2024-05-12 10:35:02,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:35:02,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:35:02,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:35:06,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:35:06,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:35:06,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964966808] [2024-05-12 10:35:06,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964966808] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:35:06,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:35:06,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:35:06,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248803133] [2024-05-12 10:35:06,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:35:06,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:35:06,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:35:06,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:35:06,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:35:06,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:35:06,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 59 transitions, 324 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:35:06,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:35:06,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:35:06,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:35:06,555 INFO L124 PetriNetUnfolderBase]: 746/1396 cut-off events. [2024-05-12 10:35:06,555 INFO L125 PetriNetUnfolderBase]: For 2231/2231 co-relation queries the response was YES. [2024-05-12 10:35:06,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3918 conditions, 1396 events. 746/1396 cut-off events. For 2231/2231 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 7419 event pairs, 335 based on Foata normal form. 1/1339 useless extension candidates. Maximal degree in co-relation 3888. Up to 1184 conditions per place. [2024-05-12 10:35:06,566 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 71 selfloop transitions, 13 changer transitions 0/90 dead transitions. [2024-05-12 10:35:06,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 90 transitions, 614 flow [2024-05-12 10:35:06,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:35:06,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:35:06,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-05-12 10:35:06,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42124542124542125 [2024-05-12 10:35:06,567 INFO L175 Difference]: Start difference. First operand has 65 places, 59 transitions, 324 flow. Second operand 7 states and 115 transitions. [2024-05-12 10:35:06,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 90 transitions, 614 flow [2024-05-12 10:35:06,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 90 transitions, 578 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-05-12 10:35:06,570 INFO L231 Difference]: Finished difference. Result has 71 places, 70 transitions, 427 flow [2024-05-12 10:35:06,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=427, PETRI_PLACES=71, PETRI_TRANSITIONS=70} [2024-05-12 10:35:06,571 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 28 predicate places. [2024-05-12 10:35:06,571 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 70 transitions, 427 flow [2024-05-12 10:35:06,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:35:06,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:35:06,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:35:06,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-05-12 10:35:06,572 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:35:06,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:35:06,572 INFO L85 PathProgramCache]: Analyzing trace with hash -789138432, now seen corresponding path program 1 times [2024-05-12 10:35:06,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:35:06,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059547371] [2024-05-12 10:35:06,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:35:06,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:35:06,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:35:09,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:35:09,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:35:09,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059547371] [2024-05-12 10:35:09,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059547371] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:35:09,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:35:09,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:35:09,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659929106] [2024-05-12 10:35:09,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:35:09,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:35:09,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:35:09,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:35:09,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:35:09,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:35:09,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 70 transitions, 427 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:35:09,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:35:09,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:35:09,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:35:10,508 INFO L124 PetriNetUnfolderBase]: 772/1442 cut-off events. [2024-05-12 10:35:10,508 INFO L125 PetriNetUnfolderBase]: For 3107/3110 co-relation queries the response was YES. [2024-05-12 10:35:10,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4356 conditions, 1442 events. 772/1442 cut-off events. For 3107/3110 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 7687 event pairs, 253 based on Foata normal form. 4/1386 useless extension candidates. Maximal degree in co-relation 4322. Up to 1149 conditions per place. [2024-05-12 10:35:10,516 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 68 selfloop transitions, 31 changer transitions 0/105 dead transitions. [2024-05-12 10:35:10,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 105 transitions, 753 flow [2024-05-12 10:35:10,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:35:10,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:35:10,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-05-12 10:35:10,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45054945054945056 [2024-05-12 10:35:10,518 INFO L175 Difference]: Start difference. First operand has 71 places, 70 transitions, 427 flow. Second operand 7 states and 123 transitions. [2024-05-12 10:35:10,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 105 transitions, 753 flow [2024-05-12 10:35:10,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 105 transitions, 730 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-05-12 10:35:10,522 INFO L231 Difference]: Finished difference. Result has 78 places, 83 transitions, 575 flow [2024-05-12 10:35:10,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=575, PETRI_PLACES=78, PETRI_TRANSITIONS=83} [2024-05-12 10:35:10,523 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 35 predicate places. [2024-05-12 10:35:10,523 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 83 transitions, 575 flow [2024-05-12 10:35:10,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:35:10,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:35:10,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:35:10,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-05-12 10:35:10,524 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:35:10,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:35:10,524 INFO L85 PathProgramCache]: Analyzing trace with hash -2111051810, now seen corresponding path program 2 times [2024-05-12 10:35:10,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:35:10,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263062352] [2024-05-12 10:35:10,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:35:10,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:35:10,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:35:13,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:35:13,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:35:13,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263062352] [2024-05-12 10:35:13,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263062352] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:35:13,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:35:13,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:35:13,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181380589] [2024-05-12 10:35:13,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:35:13,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:35:13,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:35:13,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:35:13,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:35:13,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:35:13,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 83 transitions, 575 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:35:13,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:35:13,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:35:13,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:35:14,387 INFO L124 PetriNetUnfolderBase]: 792/1469 cut-off events. [2024-05-12 10:35:14,388 INFO L125 PetriNetUnfolderBase]: For 4439/4442 co-relation queries the response was YES. [2024-05-12 10:35:14,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5011 conditions, 1469 events. 792/1469 cut-off events. For 4439/4442 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 7777 event pairs, 252 based on Foata normal form. 4/1413 useless extension candidates. Maximal degree in co-relation 4973. Up to 1179 conditions per place. [2024-05-12 10:35:14,399 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 73 selfloop transitions, 30 changer transitions 0/109 dead transitions. [2024-05-12 10:35:14,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 109 transitions, 899 flow [2024-05-12 10:35:14,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:35:14,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:35:14,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-05-12 10:35:14,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43956043956043955 [2024-05-12 10:35:14,401 INFO L175 Difference]: Start difference. First operand has 78 places, 83 transitions, 575 flow. Second operand 7 states and 120 transitions. [2024-05-12 10:35:14,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 109 transitions, 899 flow [2024-05-12 10:35:14,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 109 transitions, 853 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-05-12 10:35:14,409 INFO L231 Difference]: Finished difference. Result has 84 places, 88 transitions, 649 flow [2024-05-12 10:35:14,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=649, PETRI_PLACES=84, PETRI_TRANSITIONS=88} [2024-05-12 10:35:14,409 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 41 predicate places. [2024-05-12 10:35:14,409 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 88 transitions, 649 flow [2024-05-12 10:35:14,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:35:14,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:35:14,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:35:14,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-05-12 10:35:14,410 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:35:14,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:35:14,410 INFO L85 PathProgramCache]: Analyzing trace with hash -582188322, now seen corresponding path program 3 times [2024-05-12 10:35:14,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:35:14,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055328298] [2024-05-12 10:35:14,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:35:14,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:35:14,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:35:17,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:35:17,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:35:17,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055328298] [2024-05-12 10:35:17,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055328298] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:35:17,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:35:17,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:35:17,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730851789] [2024-05-12 10:35:17,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:35:17,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:35:17,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:35:17,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:35:17,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:35:17,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:35:17,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 88 transitions, 649 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:35:17,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:35:17,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:35:17,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:35:18,168 INFO L124 PetriNetUnfolderBase]: 802/1484 cut-off events. [2024-05-12 10:35:18,168 INFO L125 PetriNetUnfolderBase]: For 5529/5532 co-relation queries the response was YES. [2024-05-12 10:35:18,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5312 conditions, 1484 events. 802/1484 cut-off events. For 5529/5532 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 7911 event pairs, 236 based on Foata normal form. 4/1428 useless extension candidates. Maximal degree in co-relation 5271. Up to 1130 conditions per place. [2024-05-12 10:35:18,175 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 77 selfloop transitions, 39 changer transitions 0/122 dead transitions. [2024-05-12 10:35:18,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 122 transitions, 1085 flow [2024-05-12 10:35:18,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:35:18,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:35:18,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-05-12 10:35:18,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45054945054945056 [2024-05-12 10:35:18,177 INFO L175 Difference]: Start difference. First operand has 84 places, 88 transitions, 649 flow. Second operand 7 states and 123 transitions. [2024-05-12 10:35:18,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 122 transitions, 1085 flow [2024-05-12 10:35:18,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 122 transitions, 1036 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-05-12 10:35:18,185 INFO L231 Difference]: Finished difference. Result has 89 places, 98 transitions, 804 flow [2024-05-12 10:35:18,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=804, PETRI_PLACES=89, PETRI_TRANSITIONS=98} [2024-05-12 10:35:18,185 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 46 predicate places. [2024-05-12 10:35:18,185 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 98 transitions, 804 flow [2024-05-12 10:35:18,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:35:18,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:35:18,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:35:18,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-05-12 10:35:18,186 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:35:18,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:35:18,186 INFO L85 PathProgramCache]: Analyzing trace with hash -582177410, now seen corresponding path program 1 times [2024-05-12 10:35:18,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:35:18,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836992193] [2024-05-12 10:35:18,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:35:18,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:35:18,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:35:23,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:35:23,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:35:23,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836992193] [2024-05-12 10:35:23,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836992193] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:35:23,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:35:23,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 10:35:23,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207989246] [2024-05-12 10:35:23,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:35:23,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 10:35:23,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:35:23,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 10:35:23,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 10:35:23,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:35:23,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 98 transitions, 804 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:35:23,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:35:23,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:35:23,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:35:24,150 INFO L124 PetriNetUnfolderBase]: 808/1496 cut-off events. [2024-05-12 10:35:24,150 INFO L125 PetriNetUnfolderBase]: For 6584/6584 co-relation queries the response was YES. [2024-05-12 10:35:24,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5650 conditions, 1496 events. 808/1496 cut-off events. For 6584/6584 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 7990 event pairs, 270 based on Foata normal form. 1/1437 useless extension candidates. Maximal degree in co-relation 5607. Up to 1261 conditions per place. [2024-05-12 10:35:24,165 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 104 selfloop transitions, 18 changer transitions 0/128 dead transitions. [2024-05-12 10:35:24,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 128 transitions, 1181 flow [2024-05-12 10:35:24,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:35:24,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:35:24,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-05-12 10:35:24,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4198717948717949 [2024-05-12 10:35:24,168 INFO L175 Difference]: Start difference. First operand has 89 places, 98 transitions, 804 flow. Second operand 8 states and 131 transitions. [2024-05-12 10:35:24,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 128 transitions, 1181 flow [2024-05-12 10:35:24,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 128 transitions, 1119 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-05-12 10:35:24,179 INFO L231 Difference]: Finished difference. Result has 95 places, 102 transitions, 826 flow [2024-05-12 10:35:24,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=826, PETRI_PLACES=95, PETRI_TRANSITIONS=102} [2024-05-12 10:35:24,180 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 52 predicate places. [2024-05-12 10:35:24,181 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 102 transitions, 826 flow [2024-05-12 10:35:24,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:35:24,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:35:24,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:35:24,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-05-12 10:35:24,181 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:35:24,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:35:24,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1301743633, now seen corresponding path program 1 times [2024-05-12 10:35:24,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:35:24,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620676703] [2024-05-12 10:35:24,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:35:24,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:35:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:35:28,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:35:28,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:35:28,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620676703] [2024-05-12 10:35:28,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620676703] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:35:28,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:35:28,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 10:35:28,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34204592] [2024-05-12 10:35:28,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:35:28,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 10:35:28,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:35:28,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 10:35:28,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-05-12 10:35:28,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:35:28,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 102 transitions, 826 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:35:28,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:35:28,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:35:28,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:35:29,011 INFO L124 PetriNetUnfolderBase]: 828/1520 cut-off events. [2024-05-12 10:35:29,011 INFO L125 PetriNetUnfolderBase]: For 6974/6974 co-relation queries the response was YES. [2024-05-12 10:35:29,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5940 conditions, 1520 events. 828/1520 cut-off events. For 6974/6974 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 8091 event pairs, 175 based on Foata normal form. 2/1464 useless extension candidates. Maximal degree in co-relation 5894. Up to 1252 conditions per place. [2024-05-12 10:35:29,020 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 108 selfloop transitions, 18 changer transitions 0/132 dead transitions. [2024-05-12 10:35:29,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 132 transitions, 1192 flow [2024-05-12 10:35:29,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:35:29,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:35:29,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-05-12 10:35:29,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4542124542124542 [2024-05-12 10:35:29,037 INFO L175 Difference]: Start difference. First operand has 95 places, 102 transitions, 826 flow. Second operand 7 states and 124 transitions. [2024-05-12 10:35:29,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 132 transitions, 1192 flow [2024-05-12 10:35:29,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 132 transitions, 1165 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-05-12 10:35:29,047 INFO L231 Difference]: Finished difference. Result has 98 places, 105 transitions, 873 flow [2024-05-12 10:35:29,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=873, PETRI_PLACES=98, PETRI_TRANSITIONS=105} [2024-05-12 10:35:29,047 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 55 predicate places. [2024-05-12 10:35:29,047 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 105 transitions, 873 flow [2024-05-12 10:35:29,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:35:29,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:35:29,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:35:29,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-05-12 10:35:29,048 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:35:29,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:35:29,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1306332253, now seen corresponding path program 2 times [2024-05-12 10:35:29,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:35:29,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305828575] [2024-05-12 10:35:29,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:35:29,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:35:29,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:35:32,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:35:32,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:35:32,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305828575] [2024-05-12 10:35:32,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305828575] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:35:32,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:35:32,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:35:32,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993356387] [2024-05-12 10:35:32,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:35:32,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:35:32,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:35:32,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:35:32,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:35:32,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:35:32,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 105 transitions, 873 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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) [2024-05-12 10:35:32,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:35:32,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:35:32,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:35:33,474 INFO L124 PetriNetUnfolderBase]: 848/1551 cut-off events. [2024-05-12 10:35:33,474 INFO L125 PetriNetUnfolderBase]: For 8251/8251 co-relation queries the response was YES. [2024-05-12 10:35:33,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6302 conditions, 1551 events. 848/1551 cut-off events. For 8251/8251 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 8239 event pairs, 182 based on Foata normal form. 2/1495 useless extension candidates. Maximal degree in co-relation 6254. Up to 1190 conditions per place. [2024-05-12 10:35:33,483 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 97 selfloop transitions, 35 changer transitions 0/138 dead transitions. [2024-05-12 10:35:33,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 138 transitions, 1317 flow [2024-05-12 10:35:33,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:35:33,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:35:33,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-05-12 10:35:33,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46886446886446886 [2024-05-12 10:35:33,484 INFO L175 Difference]: Start difference. First operand has 98 places, 105 transitions, 873 flow. Second operand 7 states and 128 transitions. [2024-05-12 10:35:33,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 138 transitions, 1317 flow [2024-05-12 10:35:33,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 138 transitions, 1256 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-05-12 10:35:33,499 INFO L231 Difference]: Finished difference. Result has 99 places, 111 transitions, 958 flow [2024-05-12 10:35:33,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=812, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=958, PETRI_PLACES=99, PETRI_TRANSITIONS=111} [2024-05-12 10:35:33,500 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 56 predicate places. [2024-05-12 10:35:33,500 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 111 transitions, 958 flow [2024-05-12 10:35:33,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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) [2024-05-12 10:35:33,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:35:33,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:35:33,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-05-12 10:35:33,501 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:35:33,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:35:33,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1301863820, now seen corresponding path program 1 times [2024-05-12 10:35:33,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:35:33,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250386229] [2024-05-12 10:35:33,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:35:33,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:35:33,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:35:37,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:35:37,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:35:37,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250386229] [2024-05-12 10:35:37,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250386229] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:35:37,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:35:37,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 10:35:37,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618895117] [2024-05-12 10:35:37,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:35:37,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 10:35:37,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:35:37,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 10:35:37,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-05-12 10:35:37,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:35:37,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 111 transitions, 958 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:35:37,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:35:37,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:35:37,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:35:37,741 INFO L124 PetriNetUnfolderBase]: 864/1575 cut-off events. [2024-05-12 10:35:37,741 INFO L125 PetriNetUnfolderBase]: For 9506/9506 co-relation queries the response was YES. [2024-05-12 10:35:37,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6659 conditions, 1575 events. 864/1575 cut-off events. For 9506/9506 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 8375 event pairs, 270 based on Foata normal form. 1/1518 useless extension candidates. Maximal degree in co-relation 6611. Up to 1278 conditions per place. [2024-05-12 10:35:37,751 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 96 selfloop transitions, 44 changer transitions 0/146 dead transitions. [2024-05-12 10:35:37,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 146 transitions, 1447 flow [2024-05-12 10:35:37,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:35:37,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:35:37,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-05-12 10:35:37,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45787545787545786 [2024-05-12 10:35:37,772 INFO L175 Difference]: Start difference. First operand has 99 places, 111 transitions, 958 flow. Second operand 7 states and 125 transitions. [2024-05-12 10:35:37,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 146 transitions, 1447 flow [2024-05-12 10:35:37,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 146 transitions, 1393 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-05-12 10:35:37,786 INFO L231 Difference]: Finished difference. Result has 105 places, 125 transitions, 1187 flow [2024-05-12 10:35:37,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1187, PETRI_PLACES=105, PETRI_TRANSITIONS=125} [2024-05-12 10:35:37,787 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 62 predicate places. [2024-05-12 10:35:37,787 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 125 transitions, 1187 flow [2024-05-12 10:35:37,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:35:37,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:35:37,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:35:37,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-05-12 10:35:37,788 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:35:37,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:35:37,788 INFO L85 PathProgramCache]: Analyzing trace with hash -446970069, now seen corresponding path program 1 times [2024-05-12 10:35:37,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:35:37,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770651475] [2024-05-12 10:35:37,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:35:37,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:35:37,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:35:41,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:35:41,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:35:41,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770651475] [2024-05-12 10:35:41,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770651475] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:35:41,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:35:41,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 10:35:41,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427959409] [2024-05-12 10:35:41,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:35:41,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 10:35:41,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:35:41,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 10:35:41,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 10:35:41,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:35:41,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 125 transitions, 1187 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:35:41,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:35:41,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:35:41,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:35:42,212 INFO L124 PetriNetUnfolderBase]: 905/1643 cut-off events. [2024-05-12 10:35:42,212 INFO L125 PetriNetUnfolderBase]: For 10977/10983 co-relation queries the response was YES. [2024-05-12 10:35:42,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7226 conditions, 1643 events. 905/1643 cut-off events. For 10977/10983 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8721 event pairs, 279 based on Foata normal form. 6/1590 useless extension candidates. Maximal degree in co-relation 7174. Up to 1268 conditions per place. [2024-05-12 10:35:42,228 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 116 selfloop transitions, 47 changer transitions 0/169 dead transitions. [2024-05-12 10:35:42,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 169 transitions, 1737 flow [2024-05-12 10:35:42,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:35:42,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:35:42,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-05-12 10:35:42,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-05-12 10:35:42,230 INFO L175 Difference]: Start difference. First operand has 105 places, 125 transitions, 1187 flow. Second operand 8 states and 144 transitions. [2024-05-12 10:35:42,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 169 transitions, 1737 flow [2024-05-12 10:35:42,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 169 transitions, 1681 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-05-12 10:35:42,247 INFO L231 Difference]: Finished difference. Result has 114 places, 137 transitions, 1393 flow [2024-05-12 10:35:42,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1131, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1393, PETRI_PLACES=114, PETRI_TRANSITIONS=137} [2024-05-12 10:35:42,247 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 71 predicate places. [2024-05-12 10:35:42,247 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 137 transitions, 1393 flow [2024-05-12 10:35:42,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:35:42,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:35:42,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:35:42,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-05-12 10:35:42,248 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:35:42,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:35:42,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1018095885, now seen corresponding path program 2 times [2024-05-12 10:35:42,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:35:42,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155001570] [2024-05-12 10:35:42,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:35:42,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:35:42,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:35:46,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:35:46,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:35:46,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155001570] [2024-05-12 10:35:46,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155001570] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:35:46,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:35:46,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 10:35:46,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832574936] [2024-05-12 10:35:46,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:35:46,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 10:35:46,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:35:46,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 10:35:46,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 10:35:46,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:35:46,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 137 transitions, 1393 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:35:46,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:35:46,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:35:46,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:35:46,840 INFO L124 PetriNetUnfolderBase]: 937/1702 cut-off events. [2024-05-12 10:35:46,840 INFO L125 PetriNetUnfolderBase]: For 13594/13600 co-relation queries the response was YES. [2024-05-12 10:35:46,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8054 conditions, 1702 events. 937/1702 cut-off events. For 13594/13600 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 9118 event pairs, 291 based on Foata normal form. 6/1645 useless extension candidates. Maximal degree in co-relation 7997. Up to 1318 conditions per place. [2024-05-12 10:35:46,858 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 125 selfloop transitions, 44 changer transitions 0/175 dead transitions. [2024-05-12 10:35:46,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 175 transitions, 1949 flow [2024-05-12 10:35:46,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:35:46,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:35:46,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-05-12 10:35:46,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4519230769230769 [2024-05-12 10:35:46,859 INFO L175 Difference]: Start difference. First operand has 114 places, 137 transitions, 1393 flow. Second operand 8 states and 141 transitions. [2024-05-12 10:35:46,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 175 transitions, 1949 flow [2024-05-12 10:35:46,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 175 transitions, 1883 flow, removed 32 selfloop flow, removed 1 redundant places. [2024-05-12 10:35:46,880 INFO L231 Difference]: Finished difference. Result has 124 places, 145 transitions, 1556 flow [2024-05-12 10:35:46,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1333, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1556, PETRI_PLACES=124, PETRI_TRANSITIONS=145} [2024-05-12 10:35:46,881 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 81 predicate places. [2024-05-12 10:35:46,881 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 145 transitions, 1556 flow [2024-05-12 10:35:46,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:35:46,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:35:46,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:35:46,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-05-12 10:35:46,881 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:35:46,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:35:46,882 INFO L85 PathProgramCache]: Analyzing trace with hash -877172502, now seen corresponding path program 2 times [2024-05-12 10:35:46,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:35:46,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289778839] [2024-05-12 10:35:46,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:35:46,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:35:46,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:35:50,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:35:50,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:35:50,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289778839] [2024-05-12 10:35:50,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289778839] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:35:50,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:35:50,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 10:35:50,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59374533] [2024-05-12 10:35:50,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:35:50,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 10:35:50,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:35:50,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 10:35:50,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 10:35:50,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:35:50,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 145 transitions, 1556 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:35:50,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:35:50,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:35:50,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:35:51,195 INFO L124 PetriNetUnfolderBase]: 937/1702 cut-off events. [2024-05-12 10:35:51,195 INFO L125 PetriNetUnfolderBase]: For 15227/15233 co-relation queries the response was YES. [2024-05-12 10:35:51,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8404 conditions, 1702 events. 937/1702 cut-off events. For 15227/15233 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 9190 event pairs, 300 based on Foata normal form. 5/1644 useless extension candidates. Maximal degree in co-relation 8341. Up to 1393 conditions per place. [2024-05-12 10:35:51,205 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 120 selfloop transitions, 42 changer transitions 0/168 dead transitions. [2024-05-12 10:35:51,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 168 transitions, 2002 flow [2024-05-12 10:35:51,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:35:51,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:35:51,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-05-12 10:35:51,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4432234432234432 [2024-05-12 10:35:51,210 INFO L175 Difference]: Start difference. First operand has 124 places, 145 transitions, 1556 flow. Second operand 7 states and 121 transitions. [2024-05-12 10:35:51,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 168 transitions, 2002 flow [2024-05-12 10:35:51,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 168 transitions, 1944 flow, removed 28 selfloop flow, removed 1 redundant places. [2024-05-12 10:35:51,233 INFO L231 Difference]: Finished difference. Result has 131 places, 149 transitions, 1655 flow [2024-05-12 10:35:51,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1502, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1655, PETRI_PLACES=131, PETRI_TRANSITIONS=149} [2024-05-12 10:35:51,233 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 88 predicate places. [2024-05-12 10:35:51,233 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 149 transitions, 1655 flow [2024-05-12 10:35:51,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:35:51,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:35:51,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:35:51,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-05-12 10:35:51,234 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:35:51,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:35:51,234 INFO L85 PathProgramCache]: Analyzing trace with hash -877172719, now seen corresponding path program 3 times [2024-05-12 10:35:51,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:35:51,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175538805] [2024-05-12 10:35:51,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:35:51,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:35:51,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:35:54,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:35:54,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:35:54,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175538805] [2024-05-12 10:35:54,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175538805] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:35:54,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:35:54,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:35:54,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691989890] [2024-05-12 10:35:54,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:35:54,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:35:54,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:35:54,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:35:54,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:35:55,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:35:55,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 149 transitions, 1655 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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) [2024-05-12 10:35:55,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:35:55,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:35:55,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:35:55,681 INFO L124 PetriNetUnfolderBase]: 933/1698 cut-off events. [2024-05-12 10:35:55,681 INFO L125 PetriNetUnfolderBase]: For 15876/15882 co-relation queries the response was YES. [2024-05-12 10:35:55,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8436 conditions, 1698 events. 933/1698 cut-off events. For 15876/15882 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 9139 event pairs, 256 based on Foata normal form. 3/1638 useless extension candidates. Maximal degree in co-relation 8369. Up to 1322 conditions per place. [2024-05-12 10:35:55,692 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 125 selfloop transitions, 42 changer transitions 0/173 dead transitions. [2024-05-12 10:35:55,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 173 transitions, 2099 flow [2024-05-12 10:35:55,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:35:55,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:35:55,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-05-12 10:35:55,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45787545787545786 [2024-05-12 10:35:55,693 INFO L175 Difference]: Start difference. First operand has 131 places, 149 transitions, 1655 flow. Second operand 7 states and 125 transitions. [2024-05-12 10:35:55,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 173 transitions, 2099 flow [2024-05-12 10:35:55,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 173 transitions, 2025 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-05-12 10:35:55,718 INFO L231 Difference]: Finished difference. Result has 135 places, 149 transitions, 1672 flow [2024-05-12 10:35:55,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1581, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1672, PETRI_PLACES=135, PETRI_TRANSITIONS=149} [2024-05-12 10:35:55,719 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 92 predicate places. [2024-05-12 10:35:55,719 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 149 transitions, 1672 flow [2024-05-12 10:35:55,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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) [2024-05-12 10:35:55,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:35:55,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:35:55,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-05-12 10:35:55,720 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:35:55,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:35:55,720 INFO L85 PathProgramCache]: Analyzing trace with hash 713933543, now seen corresponding path program 3 times [2024-05-12 10:35:55,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:35:55,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144815269] [2024-05-12 10:35:55,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:35:55,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:35:55,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:35:59,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:35:59,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:35:59,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144815269] [2024-05-12 10:35:59,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144815269] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:35:59,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:35:59,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 10:35:59,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28940199] [2024-05-12 10:35:59,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:35:59,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 10:35:59,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:35:59,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 10:35:59,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 10:35:59,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:35:59,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 149 transitions, 1672 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:35:59,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:35:59,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:35:59,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:35:59,682 INFO L124 PetriNetUnfolderBase]: 959/1732 cut-off events. [2024-05-12 10:35:59,683 INFO L125 PetriNetUnfolderBase]: For 16667/16667 co-relation queries the response was YES. [2024-05-12 10:35:59,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8723 conditions, 1732 events. 959/1732 cut-off events. For 16667/16667 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 9357 event pairs, 286 based on Foata normal form. 2/1673 useless extension candidates. Maximal degree in co-relation 8655. Up to 1487 conditions per place. [2024-05-12 10:35:59,694 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 154 selfloop transitions, 18 changer transitions 0/178 dead transitions. [2024-05-12 10:35:59,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 178 transitions, 2171 flow [2024-05-12 10:35:59,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:35:59,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:35:59,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-05-12 10:35:59,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4230769230769231 [2024-05-12 10:35:59,697 INFO L175 Difference]: Start difference. First operand has 135 places, 149 transitions, 1672 flow. Second operand 8 states and 132 transitions. [2024-05-12 10:35:59,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 178 transitions, 2171 flow [2024-05-12 10:35:59,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 178 transitions, 2047 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-05-12 10:35:59,719 INFO L231 Difference]: Finished difference. Result has 136 places, 152 transitions, 1642 flow [2024-05-12 10:35:59,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1548, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1642, PETRI_PLACES=136, PETRI_TRANSITIONS=152} [2024-05-12 10:35:59,720 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 93 predicate places. [2024-05-12 10:35:59,720 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 152 transitions, 1642 flow [2024-05-12 10:35:59,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:35:59,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:35:59,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:35:59,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-05-12 10:35:59,721 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:35:59,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:35:59,721 INFO L85 PathProgramCache]: Analyzing trace with hash -867968013, now seen corresponding path program 4 times [2024-05-12 10:35:59,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:35:59,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227277252] [2024-05-12 10:35:59,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:35:59,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:35:59,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:36:03,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:36:03,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:36:03,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227277252] [2024-05-12 10:36:03,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227277252] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:36:03,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:36:03,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 10:36:03,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208531680] [2024-05-12 10:36:03,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:36:03,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 10:36:03,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:36:03,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 10:36:03,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 10:36:03,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:36:03,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 152 transitions, 1642 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:36:03,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:36:03,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:36:03,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:36:04,318 INFO L124 PetriNetUnfolderBase]: 991/1787 cut-off events. [2024-05-12 10:36:04,318 INFO L125 PetriNetUnfolderBase]: For 18777/18783 co-relation queries the response was YES. [2024-05-12 10:36:04,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9128 conditions, 1787 events. 991/1787 cut-off events. For 18777/18783 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9695 event pairs, 283 based on Foata normal form. 6/1730 useless extension candidates. Maximal degree in co-relation 9060. Up to 1145 conditions per place. [2024-05-12 10:36:04,329 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 128 selfloop transitions, 62 changer transitions 0/196 dead transitions. [2024-05-12 10:36:04,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 196 transitions, 2400 flow [2024-05-12 10:36:04,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:36:04,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:36:04,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-05-12 10:36:04,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46794871794871795 [2024-05-12 10:36:04,331 INFO L175 Difference]: Start difference. First operand has 136 places, 152 transitions, 1642 flow. Second operand 8 states and 146 transitions. [2024-05-12 10:36:04,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 196 transitions, 2400 flow [2024-05-12 10:36:04,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 196 transitions, 2328 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-05-12 10:36:04,358 INFO L231 Difference]: Finished difference. Result has 140 places, 161 transitions, 1894 flow [2024-05-12 10:36:04,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1570, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1894, PETRI_PLACES=140, PETRI_TRANSITIONS=161} [2024-05-12 10:36:04,359 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 97 predicate places. [2024-05-12 10:36:04,359 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 161 transitions, 1894 flow [2024-05-12 10:36:04,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:36:04,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:36:04,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:36:04,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-05-12 10:36:04,360 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:36:04,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:36:04,360 INFO L85 PathProgramCache]: Analyzing trace with hash 713945447, now seen corresponding path program 1 times [2024-05-12 10:36:04,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:36:04,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841293622] [2024-05-12 10:36:04,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:36:04,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:36:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:36:10,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:36:10,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:36:10,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841293622] [2024-05-12 10:36:10,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841293622] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:36:10,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:36:10,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 10:36:10,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480968138] [2024-05-12 10:36:10,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:36:10,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 10:36:10,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:36:10,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 10:36:10,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-05-12 10:36:10,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:36:10,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 161 transitions, 1894 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-05-12 10:36:10,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:36:10,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:36:10,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:36:11,255 INFO L124 PetriNetUnfolderBase]: 989/1801 cut-off events. [2024-05-12 10:36:11,255 INFO L125 PetriNetUnfolderBase]: For 20661/20661 co-relation queries the response was YES. [2024-05-12 10:36:11,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9621 conditions, 1801 events. 989/1801 cut-off events. For 20661/20661 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9893 event pairs, 288 based on Foata normal form. 1/1734 useless extension candidates. Maximal degree in co-relation 9550. Up to 1502 conditions per place. [2024-05-12 10:36:11,267 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 161 selfloop transitions, 34 changer transitions 0/201 dead transitions. [2024-05-12 10:36:11,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 201 transitions, 2536 flow [2024-05-12 10:36:11,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:36:11,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:36:11,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-05-12 10:36:11,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4301994301994302 [2024-05-12 10:36:11,268 INFO L175 Difference]: Start difference. First operand has 140 places, 161 transitions, 1894 flow. Second operand 9 states and 151 transitions. [2024-05-12 10:36:11,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 201 transitions, 2536 flow [2024-05-12 10:36:11,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 201 transitions, 2435 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-05-12 10:36:11,303 INFO L231 Difference]: Finished difference. Result has 148 places, 166 transitions, 1941 flow [2024-05-12 10:36:11,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1793, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1941, PETRI_PLACES=148, PETRI_TRANSITIONS=166} [2024-05-12 10:36:11,303 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 105 predicate places. [2024-05-12 10:36:11,303 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 166 transitions, 1941 flow [2024-05-12 10:36:11,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-05-12 10:36:11,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:36:11,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:36:11,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-05-12 10:36:11,304 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:36:11,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:36:11,304 INFO L85 PathProgramCache]: Analyzing trace with hash 96942653, now seen corresponding path program 1 times [2024-05-12 10:36:11,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:36:11,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733660217] [2024-05-12 10:36:11,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:36:11,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:36:11,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:36:14,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:36:14,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:36:14,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733660217] [2024-05-12 10:36:14,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733660217] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:36:14,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:36:14,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 10:36:14,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964421465] [2024-05-12 10:36:14,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:36:14,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 10:36:14,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:36:14,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 10:36:14,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 10:36:14,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:36:14,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 166 transitions, 1941 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-05-12 10:36:14,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:36:14,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:36:14,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:36:15,678 INFO L124 PetriNetUnfolderBase]: 1021/1846 cut-off events. [2024-05-12 10:36:15,679 INFO L125 PetriNetUnfolderBase]: For 21074/21074 co-relation queries the response was YES. [2024-05-12 10:36:15,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9940 conditions, 1846 events. 1021/1846 cut-off events. For 21074/21074 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 10144 event pairs, 241 based on Foata normal form. 2/1781 useless extension candidates. Maximal degree in co-relation 9865. Up to 1534 conditions per place. [2024-05-12 10:36:15,690 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 171 selfloop transitions, 26 changer transitions 0/203 dead transitions. [2024-05-12 10:36:15,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 203 transitions, 2512 flow [2024-05-12 10:36:15,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:36:15,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:36:15,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-05-12 10:36:15,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44871794871794873 [2024-05-12 10:36:15,691 INFO L175 Difference]: Start difference. First operand has 148 places, 166 transitions, 1941 flow. Second operand 8 states and 140 transitions. [2024-05-12 10:36:15,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 203 transitions, 2512 flow [2024-05-12 10:36:15,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 203 transitions, 2455 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-05-12 10:36:15,725 INFO L231 Difference]: Finished difference. Result has 153 places, 174 transitions, 2045 flow [2024-05-12 10:36:15,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1884, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2045, PETRI_PLACES=153, PETRI_TRANSITIONS=174} [2024-05-12 10:36:15,726 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 110 predicate places. [2024-05-12 10:36:15,726 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 174 transitions, 2045 flow [2024-05-12 10:36:15,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-05-12 10:36:15,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:36:15,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:36:15,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-05-12 10:36:15,726 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:36:15,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:36:15,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1115299285, now seen corresponding path program 1 times [2024-05-12 10:36:15,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:36:15,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242813444] [2024-05-12 10:36:15,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:36:15,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:36:15,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:36:20,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:36:20,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:36:20,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242813444] [2024-05-12 10:36:20,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242813444] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:36:20,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:36:20,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 10:36:20,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602617729] [2024-05-12 10:36:20,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:36:20,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 10:36:20,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:36:20,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 10:36:20,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 10:36:20,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:36:20,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 174 transitions, 2045 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-05-12 10:36:20,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:36:20,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:36:20,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:36:20,978 INFO L124 PetriNetUnfolderBase]: 1046/1878 cut-off events. [2024-05-12 10:36:20,979 INFO L125 PetriNetUnfolderBase]: For 23456/23456 co-relation queries the response was YES. [2024-05-12 10:36:20,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10617 conditions, 1878 events. 1046/1878 cut-off events. For 23456/23456 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 10230 event pairs, 280 based on Foata normal form. 1/1815 useless extension candidates. Maximal degree in co-relation 10539. Up to 1458 conditions per place. [2024-05-12 10:36:20,993 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 147 selfloop transitions, 63 changer transitions 0/216 dead transitions. [2024-05-12 10:36:20,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 216 transitions, 2755 flow [2024-05-12 10:36:20,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:36:20,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:36:20,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-05-12 10:36:20,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46794871794871795 [2024-05-12 10:36:20,995 INFO L175 Difference]: Start difference. First operand has 153 places, 174 transitions, 2045 flow. Second operand 8 states and 146 transitions. [2024-05-12 10:36:20,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 216 transitions, 2755 flow [2024-05-12 10:36:21,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 216 transitions, 2657 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-05-12 10:36:21,037 INFO L231 Difference]: Finished difference. Result has 158 places, 185 transitions, 2305 flow [2024-05-12 10:36:21,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1947, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2305, PETRI_PLACES=158, PETRI_TRANSITIONS=185} [2024-05-12 10:36:21,038 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 115 predicate places. [2024-05-12 10:36:21,038 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 185 transitions, 2305 flow [2024-05-12 10:36:21,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-05-12 10:36:21,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:36:21,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:36:21,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-05-12 10:36:21,039 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:36:21,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:36:21,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1115299533, now seen corresponding path program 2 times [2024-05-12 10:36:21,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:36:21,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270756825] [2024-05-12 10:36:21,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:36:21,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:36:21,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:36:24,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:36:24,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:36:24,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270756825] [2024-05-12 10:36:24,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270756825] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:36:24,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:36:24,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 10:36:24,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682764619] [2024-05-12 10:36:24,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:36:24,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 10:36:24,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:36:24,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 10:36:24,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-05-12 10:36:25,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:36:25,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 185 transitions, 2305 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-05-12 10:36:25,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:36:25,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:36:25,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:36:25,833 INFO L124 PetriNetUnfolderBase]: 1112/1989 cut-off events. [2024-05-12 10:36:25,833 INFO L125 PetriNetUnfolderBase]: For 28012/28012 co-relation queries the response was YES. [2024-05-12 10:36:25,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11541 conditions, 1989 events. 1112/1989 cut-off events. For 28012/28012 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 10999 event pairs, 230 based on Foata normal form. 2/1923 useless extension candidates. Maximal degree in co-relation 11460. Up to 1482 conditions per place. [2024-05-12 10:36:25,849 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 157 selfloop transitions, 80 changer transitions 0/243 dead transitions. [2024-05-12 10:36:25,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 243 transitions, 3209 flow [2024-05-12 10:36:25,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:36:25,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:36:25,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-05-12 10:36:25,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4807692307692308 [2024-05-12 10:36:25,851 INFO L175 Difference]: Start difference. First operand has 158 places, 185 transitions, 2305 flow. Second operand 8 states and 150 transitions. [2024-05-12 10:36:25,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 243 transitions, 3209 flow [2024-05-12 10:36:25,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 243 transitions, 3133 flow, removed 37 selfloop flow, removed 1 redundant places. [2024-05-12 10:36:25,902 INFO L231 Difference]: Finished difference. Result has 168 places, 211 transitions, 2732 flow [2024-05-12 10:36:25,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2233, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2732, PETRI_PLACES=168, PETRI_TRANSITIONS=211} [2024-05-12 10:36:25,903 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 125 predicate places. [2024-05-12 10:36:25,903 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 211 transitions, 2732 flow [2024-05-12 10:36:25,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-05-12 10:36:25,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:36:25,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:36:25,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-05-12 10:36:25,904 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:36:25,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:36:25,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1881275453, now seen corresponding path program 3 times [2024-05-12 10:36:25,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:36:25,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191271167] [2024-05-12 10:36:25,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:36:25,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:36:25,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:36:29,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:36:29,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:36:29,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191271167] [2024-05-12 10:36:29,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191271167] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:36:29,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:36:29,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 10:36:29,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043105472] [2024-05-12 10:36:29,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:36:29,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 10:36:29,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:36:29,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 10:36:29,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-05-12 10:36:29,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:36:29,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 211 transitions, 2732 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-05-12 10:36:29,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:36:29,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:36:29,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:36:30,123 INFO L124 PetriNetUnfolderBase]: 1120/1998 cut-off events. [2024-05-12 10:36:30,123 INFO L125 PetriNetUnfolderBase]: For 31433/31433 co-relation queries the response was YES. [2024-05-12 10:36:30,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12266 conditions, 1998 events. 1120/1998 cut-off events. For 31433/31433 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 11038 event pairs, 247 based on Foata normal form. 2/1933 useless extension candidates. Maximal degree in co-relation 12179. Up to 1575 conditions per place. [2024-05-12 10:36:30,139 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 167 selfloop transitions, 70 changer transitions 0/243 dead transitions. [2024-05-12 10:36:30,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 243 transitions, 3388 flow [2024-05-12 10:36:30,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:36:30,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:36:30,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-05-12 10:36:30,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47115384615384615 [2024-05-12 10:36:30,142 INFO L175 Difference]: Start difference. First operand has 168 places, 211 transitions, 2732 flow. Second operand 8 states and 147 transitions. [2024-05-12 10:36:30,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 243 transitions, 3388 flow [2024-05-12 10:36:30,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 243 transitions, 3290 flow, removed 48 selfloop flow, removed 1 redundant places. [2024-05-12 10:36:30,200 INFO L231 Difference]: Finished difference. Result has 175 places, 215 transitions, 2872 flow [2024-05-12 10:36:30,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2652, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2872, PETRI_PLACES=175, PETRI_TRANSITIONS=215} [2024-05-12 10:36:30,201 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 132 predicate places. [2024-05-12 10:36:30,201 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 215 transitions, 2872 flow [2024-05-12 10:36:30,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-05-12 10:36:30,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:36:30,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:36:30,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-05-12 10:36:30,201 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:36:30,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:36:30,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1847203391, now seen corresponding path program 1 times [2024-05-12 10:36:30,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:36:30,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311067700] [2024-05-12 10:36:30,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:36:30,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:36:30,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:36:35,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:36:35,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:36:35,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311067700] [2024-05-12 10:36:35,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311067700] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:36:35,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:36:35,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 10:36:35,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310637201] [2024-05-12 10:36:35,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:36:35,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 10:36:35,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:36:35,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 10:36:35,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 10:36:35,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:36:35,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 215 transitions, 2872 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-05-12 10:36:35,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:36:35,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:36:35,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:36:35,981 INFO L124 PetriNetUnfolderBase]: 1152/2054 cut-off events. [2024-05-12 10:36:35,981 INFO L125 PetriNetUnfolderBase]: For 33372/33378 co-relation queries the response was YES. [2024-05-12 10:36:35,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12659 conditions, 2054 events. 1152/2054 cut-off events. For 33372/33378 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 11334 event pairs, 300 based on Foata normal form. 6/1991 useless extension candidates. Maximal degree in co-relation 12569. Up to 1601 conditions per place. [2024-05-12 10:36:35,997 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 194 selfloop transitions, 57 changer transitions 0/257 dead transitions. [2024-05-12 10:36:35,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 257 transitions, 3630 flow [2024-05-12 10:36:35,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:36:35,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:36:35,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-05-12 10:36:35,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4586894586894587 [2024-05-12 10:36:35,998 INFO L175 Difference]: Start difference. First operand has 175 places, 215 transitions, 2872 flow. Second operand 9 states and 161 transitions. [2024-05-12 10:36:35,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 257 transitions, 3630 flow [2024-05-12 10:36:36,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 257 transitions, 3442 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-05-12 10:36:36,058 INFO L231 Difference]: Finished difference. Result has 180 places, 219 transitions, 2884 flow [2024-05-12 10:36:36,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2690, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2884, PETRI_PLACES=180, PETRI_TRANSITIONS=219} [2024-05-12 10:36:36,062 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 137 predicate places. [2024-05-12 10:36:36,062 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 219 transitions, 2884 flow [2024-05-12 10:36:36,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-05-12 10:36:36,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:36:36,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:36:36,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-05-12 10:36:36,063 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:36:36,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:36:36,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1499777351, now seen corresponding path program 4 times [2024-05-12 10:36:36,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:36:36,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994044486] [2024-05-12 10:36:36,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:36:36,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:36:36,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:36:39,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:36:39,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:36:39,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994044486] [2024-05-12 10:36:39,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994044486] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:36:39,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:36:39,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 10:36:39,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235930445] [2024-05-12 10:36:39,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:36:39,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 10:36:39,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:36:39,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 10:36:39,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-05-12 10:36:39,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:36:39,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 219 transitions, 2884 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-05-12 10:36:39,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:36:39,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:36:39,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:36:40,201 INFO L124 PetriNetUnfolderBase]: 1172/2086 cut-off events. [2024-05-12 10:36:40,201 INFO L125 PetriNetUnfolderBase]: For 33858/33864 co-relation queries the response was YES. [2024-05-12 10:36:40,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12908 conditions, 2086 events. 1172/2086 cut-off events. For 33858/33864 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 11558 event pairs, 275 based on Foata normal form. 3/2019 useless extension candidates. Maximal degree in co-relation 12816. Up to 1642 conditions per place. [2024-05-12 10:36:40,215 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 177 selfloop transitions, 66 changer transitions 0/249 dead transitions. [2024-05-12 10:36:40,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 249 transitions, 3561 flow [2024-05-12 10:36:40,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:36:40,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:36:40,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-05-12 10:36:40,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44871794871794873 [2024-05-12 10:36:40,217 INFO L175 Difference]: Start difference. First operand has 180 places, 219 transitions, 2884 flow. Second operand 8 states and 140 transitions. [2024-05-12 10:36:40,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 249 transitions, 3561 flow [2024-05-12 10:36:40,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 249 transitions, 3429 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-05-12 10:36:40,288 INFO L231 Difference]: Finished difference. Result has 182 places, 222 transitions, 2960 flow [2024-05-12 10:36:40,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2752, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2960, PETRI_PLACES=182, PETRI_TRANSITIONS=222} [2024-05-12 10:36:40,290 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 139 predicate places. [2024-05-12 10:36:40,290 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 222 transitions, 2960 flow [2024-05-12 10:36:40,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-05-12 10:36:40,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:36:40,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:36:40,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-05-12 10:36:40,291 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:36:40,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:36:40,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1422303681, now seen corresponding path program 2 times [2024-05-12 10:36:40,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:36:40,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013120846] [2024-05-12 10:36:40,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:36:40,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:36:40,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:36:46,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:36:46,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:36:46,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013120846] [2024-05-12 10:36:46,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013120846] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:36:46,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:36:46,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 10:36:46,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065440681] [2024-05-12 10:36:46,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:36:46,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 10:36:46,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:36:46,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 10:36:46,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 10:36:46,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:36:46,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 222 transitions, 2960 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-05-12 10:36:46,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:36:46,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:36:46,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:36:47,733 INFO L124 PetriNetUnfolderBase]: 1204/2152 cut-off events. [2024-05-12 10:36:47,734 INFO L125 PetriNetUnfolderBase]: For 36581/36587 co-relation queries the response was YES. [2024-05-12 10:36:47,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13431 conditions, 2152 events. 1204/2152 cut-off events. For 36581/36587 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 12017 event pairs, 318 based on Foata normal form. 6/2082 useless extension candidates. Maximal degree in co-relation 13338. Up to 1683 conditions per place. [2024-05-12 10:36:47,748 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 202 selfloop transitions, 54 changer transitions 0/262 dead transitions. [2024-05-12 10:36:47,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 262 transitions, 3734 flow [2024-05-12 10:36:47,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:36:47,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:36:47,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-05-12 10:36:47,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45014245014245013 [2024-05-12 10:36:47,750 INFO L175 Difference]: Start difference. First operand has 182 places, 222 transitions, 2960 flow. Second operand 9 states and 158 transitions. [2024-05-12 10:36:47,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 262 transitions, 3734 flow [2024-05-12 10:36:47,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 262 transitions, 3548 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-05-12 10:36:47,817 INFO L231 Difference]: Finished difference. Result has 186 places, 227 transitions, 3007 flow [2024-05-12 10:36:47,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2774, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3007, PETRI_PLACES=186, PETRI_TRANSITIONS=227} [2024-05-12 10:36:47,818 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 143 predicate places. [2024-05-12 10:36:47,818 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 227 transitions, 3007 flow [2024-05-12 10:36:47,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-05-12 10:36:47,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:36:47,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:36:47,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-05-12 10:36:47,818 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:36:47,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:36:47,819 INFO L85 PathProgramCache]: Analyzing trace with hash 80803781, now seen corresponding path program 5 times [2024-05-12 10:36:47,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:36:47,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279306199] [2024-05-12 10:36:47,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:36:47,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:36:47,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:36:51,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:36:51,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:36:51,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279306199] [2024-05-12 10:36:51,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279306199] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:36:51,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:36:51,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 10:36:51,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503187140] [2024-05-12 10:36:51,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:36:51,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 10:36:51,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:36:51,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 10:36:51,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-05-12 10:36:51,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:36:51,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 227 transitions, 3007 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-05-12 10:36:51,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:36:51,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:36:51,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:36:52,145 INFO L124 PetriNetUnfolderBase]: 1224/2175 cut-off events. [2024-05-12 10:36:52,145 INFO L125 PetriNetUnfolderBase]: For 39037/39043 co-relation queries the response was YES. [2024-05-12 10:36:52,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13742 conditions, 2175 events. 1224/2175 cut-off events. For 39037/39043 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 12151 event pairs, 297 based on Foata normal form. 3/2105 useless extension candidates. Maximal degree in co-relation 13647. Up to 1735 conditions per place. [2024-05-12 10:36:52,165 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 185 selfloop transitions, 65 changer transitions 0/256 dead transitions. [2024-05-12 10:36:52,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 256 transitions, 3682 flow [2024-05-12 10:36:52,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:36:52,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:36:52,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-05-12 10:36:52,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4519230769230769 [2024-05-12 10:36:52,167 INFO L175 Difference]: Start difference. First operand has 186 places, 227 transitions, 3007 flow. Second operand 8 states and 141 transitions. [2024-05-12 10:36:52,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 256 transitions, 3682 flow [2024-05-12 10:36:52,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 256 transitions, 3503 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-05-12 10:36:52,262 INFO L231 Difference]: Finished difference. Result has 189 places, 231 transitions, 3060 flow [2024-05-12 10:36:52,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2828, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3060, PETRI_PLACES=189, PETRI_TRANSITIONS=231} [2024-05-12 10:36:52,263 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 146 predicate places. [2024-05-12 10:36:52,263 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 231 transitions, 3060 flow [2024-05-12 10:36:52,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-05-12 10:36:52,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:36:52,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:36:52,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-05-12 10:36:52,263 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:36:52,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:36:52,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1137212739, now seen corresponding path program 6 times [2024-05-12 10:36:52,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:36:52,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782297291] [2024-05-12 10:36:52,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:36:52,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:36:52,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:36:55,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:36:55,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:36:55,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782297291] [2024-05-12 10:36:55,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782297291] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:36:55,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:36:55,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 10:36:55,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276764126] [2024-05-12 10:36:55,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:36:55,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 10:36:55,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:36:55,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 10:36:55,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-05-12 10:36:55,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:36:55,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 231 transitions, 3060 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-05-12 10:36:55,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:36:55,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:36:55,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:36:56,458 INFO L124 PetriNetUnfolderBase]: 1244/2208 cut-off events. [2024-05-12 10:36:56,458 INFO L125 PetriNetUnfolderBase]: For 41780/41786 co-relation queries the response was YES. [2024-05-12 10:36:56,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14091 conditions, 2208 events. 1244/2208 cut-off events. For 41780/41786 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 12421 event pairs, 215 based on Foata normal form. 3/2137 useless extension candidates. Maximal degree in co-relation 13994. Up to 1532 conditions per place. [2024-05-12 10:36:56,478 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 161 selfloop transitions, 100 changer transitions 0/267 dead transitions. [2024-05-12 10:36:56,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 267 transitions, 3948 flow [2024-05-12 10:36:56,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:36:56,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:36:56,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-05-12 10:36:56,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46474358974358976 [2024-05-12 10:36:56,480 INFO L175 Difference]: Start difference. First operand has 189 places, 231 transitions, 3060 flow. Second operand 8 states and 145 transitions. [2024-05-12 10:36:56,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 267 transitions, 3948 flow [2024-05-12 10:36:56,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 267 transitions, 3801 flow, removed 35 selfloop flow, removed 4 redundant places. [2024-05-12 10:36:56,575 INFO L231 Difference]: Finished difference. Result has 193 places, 237 transitions, 3281 flow [2024-05-12 10:36:56,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2913, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3281, PETRI_PLACES=193, PETRI_TRANSITIONS=237} [2024-05-12 10:36:56,577 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 150 predicate places. [2024-05-12 10:36:56,577 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 237 transitions, 3281 flow [2024-05-12 10:36:56,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-05-12 10:36:56,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:36:56,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:36:56,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-05-12 10:36:56,578 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:36:56,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:36:56,578 INFO L85 PathProgramCache]: Analyzing trace with hash 80810291, now seen corresponding path program 7 times [2024-05-12 10:36:56,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:36:56,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862869925] [2024-05-12 10:36:56,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:36:56,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:36:56,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:37:00,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:37:00,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:37:00,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862869925] [2024-05-12 10:37:00,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862869925] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:37:00,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:37:00,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 10:37:00,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345047031] [2024-05-12 10:37:00,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:37:00,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 10:37:00,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:37:00,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 10:37:00,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-05-12 10:37:00,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:37:00,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 237 transitions, 3281 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-05-12 10:37:00,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:37:00,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:37:00,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:37:01,068 INFO L124 PetriNetUnfolderBase]: 1244/2208 cut-off events. [2024-05-12 10:37:01,069 INFO L125 PetriNetUnfolderBase]: For 43770/43776 co-relation queries the response was YES. [2024-05-12 10:37:01,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14297 conditions, 2208 events. 1244/2208 cut-off events. For 43770/43776 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 12370 event pairs, 288 based on Foata normal form. 3/2137 useless extension candidates. Maximal degree in co-relation 14199. Up to 1702 conditions per place. [2024-05-12 10:37:01,090 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 186 selfloop transitions, 76 changer transitions 0/268 dead transitions. [2024-05-12 10:37:01,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 268 transitions, 4013 flow [2024-05-12 10:37:01,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:37:01,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:37:01,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-05-12 10:37:01,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46474358974358976 [2024-05-12 10:37:01,092 INFO L175 Difference]: Start difference. First operand has 193 places, 237 transitions, 3281 flow. Second operand 8 states and 145 transitions. [2024-05-12 10:37:01,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 268 transitions, 4013 flow [2024-05-12 10:37:01,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 268 transitions, 3850 flow, removed 47 selfloop flow, removed 4 redundant places. [2024-05-12 10:37:01,230 INFO L231 Difference]: Finished difference. Result has 197 places, 240 transitions, 3370 flow [2024-05-12 10:37:01,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3126, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3370, PETRI_PLACES=197, PETRI_TRANSITIONS=240} [2024-05-12 10:37:01,230 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 154 predicate places. [2024-05-12 10:37:01,230 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 240 transitions, 3370 flow [2024-05-12 10:37:01,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-05-12 10:37:01,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:37:01,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:37:01,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-05-12 10:37:01,231 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:37:01,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:37:01,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1422543001, now seen corresponding path program 2 times [2024-05-12 10:37:01,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:37:01,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804505432] [2024-05-12 10:37:01,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:37:01,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:37:01,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:37:06,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:37:06,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:37:06,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804505432] [2024-05-12 10:37:06,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804505432] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:37:06,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:37:06,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 10:37:06,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19578816] [2024-05-12 10:37:06,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:37:06,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 10:37:06,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:37:06,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 10:37:06,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-05-12 10:37:06,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:37:06,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 240 transitions, 3370 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-05-12 10:37:06,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:37:06,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:37:06,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:37:07,245 INFO L124 PetriNetUnfolderBase]: 1250/2222 cut-off events. [2024-05-12 10:37:07,246 INFO L125 PetriNetUnfolderBase]: For 42079/42085 co-relation queries the response was YES. [2024-05-12 10:37:07,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14373 conditions, 2222 events. 1250/2222 cut-off events. For 42079/42085 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 12451 event pairs, 328 based on Foata normal form. 5/2151 useless extension candidates. Maximal degree in co-relation 14273. Up to 1769 conditions per place. [2024-05-12 10:37:07,266 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 211 selfloop transitions, 57 changer transitions 0/274 dead transitions. [2024-05-12 10:37:07,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 274 transitions, 4163 flow [2024-05-12 10:37:07,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:37:07,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:37:07,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-05-12 10:37:07,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4551282051282051 [2024-05-12 10:37:07,268 INFO L175 Difference]: Start difference. First operand has 197 places, 240 transitions, 3370 flow. Second operand 8 states and 142 transitions. [2024-05-12 10:37:07,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 274 transitions, 4163 flow [2024-05-12 10:37:07,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 274 transitions, 3961 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-05-12 10:37:07,406 INFO L231 Difference]: Finished difference. Result has 200 places, 245 transitions, 3447 flow [2024-05-12 10:37:07,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3168, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3447, PETRI_PLACES=200, PETRI_TRANSITIONS=245} [2024-05-12 10:37:07,407 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 157 predicate places. [2024-05-12 10:37:07,407 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 245 transitions, 3447 flow [2024-05-12 10:37:07,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-05-12 10:37:07,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:37:07,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:37:07,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-05-12 10:37:07,407 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:37:07,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:37:07,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1127074251, now seen corresponding path program 3 times [2024-05-12 10:37:07,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:37:07,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116962012] [2024-05-12 10:37:07,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:37:07,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:37:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:37:12,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:37:12,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:37:12,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116962012] [2024-05-12 10:37:12,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116962012] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:37:12,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:37:12,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 10:37:12,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224584274] [2024-05-12 10:37:12,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:37:12,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 10:37:12,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:37:12,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 10:37:12,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-05-12 10:37:12,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:37:12,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 245 transitions, 3447 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-05-12 10:37:12,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:37:12,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:37:12,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:37:13,384 INFO L124 PetriNetUnfolderBase]: 1335/2349 cut-off events. [2024-05-12 10:37:13,384 INFO L125 PetriNetUnfolderBase]: For 48226/48226 co-relation queries the response was YES. [2024-05-12 10:37:13,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15225 conditions, 2349 events. 1335/2349 cut-off events. For 48226/48226 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 13232 event pairs, 315 based on Foata normal form. 4/2279 useless extension candidates. Maximal degree in co-relation 15123. Up to 1948 conditions per place. [2024-05-12 10:37:13,402 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 249 selfloop transitions, 41 changer transitions 0/296 dead transitions. [2024-05-12 10:37:13,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 296 transitions, 4514 flow [2024-05-12 10:37:13,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:37:13,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:37:13,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-05-12 10:37:13,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.441025641025641 [2024-05-12 10:37:13,404 INFO L175 Difference]: Start difference. First operand has 200 places, 245 transitions, 3447 flow. Second operand 10 states and 172 transitions. [2024-05-12 10:37:13,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 296 transitions, 4514 flow [2024-05-12 10:37:13,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 296 transitions, 4408 flow, removed 45 selfloop flow, removed 2 redundant places. [2024-05-12 10:37:13,524 INFO L231 Difference]: Finished difference. Result has 209 places, 254 transitions, 3604 flow [2024-05-12 10:37:13,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3341, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3604, PETRI_PLACES=209, PETRI_TRANSITIONS=254} [2024-05-12 10:37:13,525 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 166 predicate places. [2024-05-12 10:37:13,525 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 254 transitions, 3604 flow [2024-05-12 10:37:13,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-05-12 10:37:13,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:37:13,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:37:13,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-05-12 10:37:13,526 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:37:13,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:37:13,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1127084481, now seen corresponding path program 4 times [2024-05-12 10:37:13,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:37:13,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664547352] [2024-05-12 10:37:13,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:37:13,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:37:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:37:17,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:37:17,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:37:17,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664547352] [2024-05-12 10:37:17,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664547352] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:37:17,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:37:17,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 10:37:17,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322754053] [2024-05-12 10:37:17,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:37:17,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 10:37:17,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:37:17,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 10:37:17,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-05-12 10:37:18,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:37:18,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 254 transitions, 3604 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-05-12 10:37:18,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:37:18,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:37:18,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:37:19,046 INFO L124 PetriNetUnfolderBase]: 1409/2492 cut-off events. [2024-05-12 10:37:19,047 INFO L125 PetriNetUnfolderBase]: For 52889/52889 co-relation queries the response was YES. [2024-05-12 10:37:19,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16496 conditions, 2492 events. 1409/2492 cut-off events. For 52889/52889 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 14283 event pairs, 321 based on Foata normal form. 2/2411 useless extension candidates. Maximal degree in co-relation 16391. Up to 1921 conditions per place. [2024-05-12 10:37:19,070 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 248 selfloop transitions, 48 changer transitions 0/302 dead transitions. [2024-05-12 10:37:19,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 302 transitions, 4700 flow [2024-05-12 10:37:19,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:37:19,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:37:19,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-05-12 10:37:19,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45584045584045585 [2024-05-12 10:37:19,072 INFO L175 Difference]: Start difference. First operand has 209 places, 254 transitions, 3604 flow. Second operand 9 states and 160 transitions. [2024-05-12 10:37:19,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 302 transitions, 4700 flow [2024-05-12 10:37:19,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 302 transitions, 4572 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-05-12 10:37:19,211 INFO L231 Difference]: Finished difference. Result has 213 places, 263 transitions, 3769 flow [2024-05-12 10:37:19,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3476, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3769, PETRI_PLACES=213, PETRI_TRANSITIONS=263} [2024-05-12 10:37:19,212 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 170 predicate places. [2024-05-12 10:37:19,212 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 263 transitions, 3769 flow [2024-05-12 10:37:19,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-05-12 10:37:19,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:37:19,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:37:19,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-05-12 10:37:19,213 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:37:19,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:37:19,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1137203811, now seen corresponding path program 5 times [2024-05-12 10:37:19,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:37:19,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520807819] [2024-05-12 10:37:19,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:37:19,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:37:19,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:37:25,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:37:25,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:37:25,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520807819] [2024-05-12 10:37:25,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520807819] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:37:25,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:37:25,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 10:37:25,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137972462] [2024-05-12 10:37:25,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:37:25,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 10:37:25,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:37:25,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 10:37:25,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-05-12 10:37:25,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:37:25,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 263 transitions, 3769 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-05-12 10:37:25,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:37:25,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:37:25,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:37:26,649 INFO L124 PetriNetUnfolderBase]: 1431/2552 cut-off events. [2024-05-12 10:37:26,649 INFO L125 PetriNetUnfolderBase]: For 55452/55458 co-relation queries the response was YES. [2024-05-12 10:37:26,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17110 conditions, 2552 events. 1431/2552 cut-off events. For 55452/55458 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 14857 event pairs, 298 based on Foata normal form. 6/2466 useless extension candidates. Maximal degree in co-relation 17002. Up to 1922 conditions per place. [2024-05-12 10:37:26,673 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 227 selfloop transitions, 74 changer transitions 0/307 dead transitions. [2024-05-12 10:37:26,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 307 transitions, 4748 flow [2024-05-12 10:37:26,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:37:26,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:37:26,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-05-12 10:37:26,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45584045584045585 [2024-05-12 10:37:26,674 INFO L175 Difference]: Start difference. First operand has 213 places, 263 transitions, 3769 flow. Second operand 9 states and 160 transitions. [2024-05-12 10:37:26,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 307 transitions, 4748 flow [2024-05-12 10:37:26,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 307 transitions, 4627 flow, removed 46 selfloop flow, removed 4 redundant places. [2024-05-12 10:37:26,802 INFO L231 Difference]: Finished difference. Result has 220 places, 269 transitions, 4003 flow [2024-05-12 10:37:26,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3650, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4003, PETRI_PLACES=220, PETRI_TRANSITIONS=269} [2024-05-12 10:37:26,803 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 177 predicate places. [2024-05-12 10:37:26,803 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 269 transitions, 4003 flow [2024-05-12 10:37:26,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-05-12 10:37:26,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:37:26,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:37:26,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-05-12 10:37:26,804 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:37:26,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:37:26,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1126715395, now seen corresponding path program 1 times [2024-05-12 10:37:26,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:37:26,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912755577] [2024-05-12 10:37:26,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:37:26,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:37:26,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:37:33,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:37:33,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:37:33,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912755577] [2024-05-12 10:37:33,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912755577] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:37:33,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:37:33,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 10:37:33,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581575770] [2024-05-12 10:37:33,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:37:33,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 10:37:33,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:37:33,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 10:37:33,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-05-12 10:37:33,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:37:33,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 269 transitions, 4003 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-05-12 10:37:33,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:37:33,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:37:33,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:37:34,527 INFO L124 PetriNetUnfolderBase]: 1441/2563 cut-off events. [2024-05-12 10:37:34,528 INFO L125 PetriNetUnfolderBase]: For 57032/57032 co-relation queries the response was YES. [2024-05-12 10:37:34,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17394 conditions, 2563 events. 1441/2563 cut-off events. For 57032/57032 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 14902 event pairs, 360 based on Foata normal form. 2/2476 useless extension candidates. Maximal degree in co-relation 17282. Up to 2180 conditions per place. [2024-05-12 10:37:34,553 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 274 selfloop transitions, 38 changer transitions 0/318 dead transitions. [2024-05-12 10:37:34,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 318 transitions, 5059 flow [2024-05-12 10:37:34,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:37:34,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:37:34,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-05-12 10:37:34,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4282051282051282 [2024-05-12 10:37:34,555 INFO L175 Difference]: Start difference. First operand has 220 places, 269 transitions, 4003 flow. Second operand 10 states and 167 transitions. [2024-05-12 10:37:34,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 318 transitions, 5059 flow [2024-05-12 10:37:34,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 318 transitions, 4925 flow, removed 44 selfloop flow, removed 3 redundant places. [2024-05-12 10:37:34,718 INFO L231 Difference]: Finished difference. Result has 229 places, 279 transitions, 4198 flow [2024-05-12 10:37:34,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3869, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4198, PETRI_PLACES=229, PETRI_TRANSITIONS=279} [2024-05-12 10:37:34,718 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 186 predicate places. [2024-05-12 10:37:34,718 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 279 transitions, 4198 flow [2024-05-12 10:37:34,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-05-12 10:37:34,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:37:34,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:37:34,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-05-12 10:37:34,719 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:37:34,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:37:34,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1705434527, now seen corresponding path program 1 times [2024-05-12 10:37:34,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:37:34,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163492578] [2024-05-12 10:37:34,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:37:34,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:37:34,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:37:34,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:37:34,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:37:34,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163492578] [2024-05-12 10:37:34,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163492578] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:37:34,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:37:34,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 10:37:34,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308502487] [2024-05-12 10:37:34,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:37:34,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 10:37:34,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:37:34,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 10:37:34,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 10:37:34,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 39 [2024-05-12 10:37:34,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 279 transitions, 4198 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:37:34,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:37:34,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 39 [2024-05-12 10:37:34,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:37:35,175 INFO L124 PetriNetUnfolderBase]: 625/1191 cut-off events. [2024-05-12 10:37:35,175 INFO L125 PetriNetUnfolderBase]: For 33261/33305 co-relation queries the response was YES. [2024-05-12 10:37:35,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7780 conditions, 1191 events. 625/1191 cut-off events. For 33261/33305 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6326 event pairs, 214 based on Foata normal form. 116/1247 useless extension candidates. Maximal degree in co-relation 7664. Up to 446 conditions per place. [2024-05-12 10:37:35,186 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 82 selfloop transitions, 21 changer transitions 0/146 dead transitions. [2024-05-12 10:37:35,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 146 transitions, 2203 flow [2024-05-12 10:37:35,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 10:37:35,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 10:37:35,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2024-05-12 10:37:35,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6410256410256411 [2024-05-12 10:37:35,188 INFO L175 Difference]: Start difference. First operand has 229 places, 279 transitions, 4198 flow. Second operand 4 states and 100 transitions. [2024-05-12 10:37:35,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 146 transitions, 2203 flow [2024-05-12 10:37:35,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 146 transitions, 1516 flow, removed 69 selfloop flow, removed 85 redundant places. [2024-05-12 10:37:35,263 INFO L231 Difference]: Finished difference. Result has 149 places, 128 transitions, 1254 flow [2024-05-12 10:37:35,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1138, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1254, PETRI_PLACES=149, PETRI_TRANSITIONS=128} [2024-05-12 10:37:35,264 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 106 predicate places. [2024-05-12 10:37:35,264 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 128 transitions, 1254 flow [2024-05-12 10:37:35,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:37:35,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:37:35,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:37:35,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-05-12 10:37:35,265 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:37:35,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:37:35,265 INFO L85 PathProgramCache]: Analyzing trace with hash 838047558, now seen corresponding path program 1 times [2024-05-12 10:37:35,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:37:35,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33704072] [2024-05-12 10:37:35,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:37:35,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:37:35,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:37:39,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:37:39,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:37:39,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33704072] [2024-05-12 10:37:39,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33704072] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:37:39,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:37:39,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:37:39,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728902584] [2024-05-12 10:37:39,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:37:39,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:37:39,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:37:39,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:37:39,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:37:39,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-05-12 10:37:39,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 128 transitions, 1254 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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) [2024-05-12 10:37:39,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:37:39,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-05-12 10:37:39,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:37:40,304 INFO L124 PetriNetUnfolderBase]: 754/1373 cut-off events. [2024-05-12 10:37:40,304 INFO L125 PetriNetUnfolderBase]: For 35588/35599 co-relation queries the response was YES. [2024-05-12 10:37:40,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8234 conditions, 1373 events. 754/1373 cut-off events. For 35588/35599 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6694 event pairs, 121 based on Foata normal form. 9/1319 useless extension candidates. Maximal degree in co-relation 8158. Up to 1098 conditions per place. [2024-05-12 10:37:40,312 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 112 selfloop transitions, 24 changer transitions 0/151 dead transitions. [2024-05-12 10:37:40,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 151 transitions, 1766 flow [2024-05-12 10:37:40,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:37:40,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:37:40,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-05-12 10:37:40,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45054945054945056 [2024-05-12 10:37:40,314 INFO L175 Difference]: Start difference. First operand has 149 places, 128 transitions, 1254 flow. Second operand 7 states and 123 transitions. [2024-05-12 10:37:40,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 151 transitions, 1766 flow [2024-05-12 10:37:40,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 151 transitions, 1755 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-05-12 10:37:40,364 INFO L231 Difference]: Finished difference. Result has 153 places, 132 transitions, 1404 flow [2024-05-12 10:37:40,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1243, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1404, PETRI_PLACES=153, PETRI_TRANSITIONS=132} [2024-05-12 10:37:40,365 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 110 predicate places. [2024-05-12 10:37:40,365 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 132 transitions, 1404 flow [2024-05-12 10:37:40,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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) [2024-05-12 10:37:40,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:37:40,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:37:40,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-05-12 10:37:40,366 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:37:40,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:37:40,366 INFO L85 PathProgramCache]: Analyzing trace with hash -724345266, now seen corresponding path program 2 times [2024-05-12 10:37:40,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:37:40,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503001263] [2024-05-12 10:37:40,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:37:40,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:37:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:37:44,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:37:44,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:37:44,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503001263] [2024-05-12 10:37:44,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503001263] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:37:44,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:37:44,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 10:37:44,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623576470] [2024-05-12 10:37:44,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:37:44,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 10:37:44,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:37:44,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 10:37:44,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 10:37:44,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:37:44,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 132 transitions, 1404 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:37:44,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:37:44,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:37:44,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:37:45,458 INFO L124 PetriNetUnfolderBase]: 850/1524 cut-off events. [2024-05-12 10:37:45,458 INFO L125 PetriNetUnfolderBase]: For 39165/39165 co-relation queries the response was YES. [2024-05-12 10:37:45,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9251 conditions, 1524 events. 850/1524 cut-off events. For 39165/39165 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 7491 event pairs, 200 based on Foata normal form. 2/1461 useless extension candidates. Maximal degree in co-relation 9173. Up to 1303 conditions per place. [2024-05-12 10:37:45,469 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 143 selfloop transitions, 23 changer transitions 0/173 dead transitions. [2024-05-12 10:37:45,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 173 transitions, 2016 flow [2024-05-12 10:37:45,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:37:45,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:37:45,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-05-12 10:37:45,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-05-12 10:37:45,475 INFO L175 Difference]: Start difference. First operand has 153 places, 132 transitions, 1404 flow. Second operand 9 states and 143 transitions. [2024-05-12 10:37:45,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 173 transitions, 2016 flow [2024-05-12 10:37:45,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 173 transitions, 1903 flow, removed 38 selfloop flow, removed 3 redundant places. [2024-05-12 10:37:45,538 INFO L231 Difference]: Finished difference. Result has 162 places, 147 transitions, 1576 flow [2024-05-12 10:37:45,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1319, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1576, PETRI_PLACES=162, PETRI_TRANSITIONS=147} [2024-05-12 10:37:45,539 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 119 predicate places. [2024-05-12 10:37:45,539 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 147 transitions, 1576 flow [2024-05-12 10:37:45,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:37:45,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:37:45,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:37:45,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-05-12 10:37:45,540 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:37:45,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:37:45,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1137369874, now seen corresponding path program 3 times [2024-05-12 10:37:45,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:37:45,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252745813] [2024-05-12 10:37:45,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:37:45,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:37:45,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:37:49,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:37:49,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:37:49,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252745813] [2024-05-12 10:37:49,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252745813] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:37:49,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:37:49,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 10:37:49,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745972064] [2024-05-12 10:37:49,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:37:49,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 10:37:49,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:37:49,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 10:37:49,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 10:37:49,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:37:49,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 147 transitions, 1576 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 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) [2024-05-12 10:37:49,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:37:49,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:37:49,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:37:50,346 INFO L124 PetriNetUnfolderBase]: 847/1519 cut-off events. [2024-05-12 10:37:50,346 INFO L125 PetriNetUnfolderBase]: For 38523/38523 co-relation queries the response was YES. [2024-05-12 10:37:50,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9309 conditions, 1519 events. 847/1519 cut-off events. For 38523/38523 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 7436 event pairs, 207 based on Foata normal form. 2/1457 useless extension candidates. Maximal degree in co-relation 9226. Up to 1255 conditions per place. [2024-05-12 10:37:50,357 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 135 selfloop transitions, 28 changer transitions 0/170 dead transitions. [2024-05-12 10:37:50,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 170 transitions, 1986 flow [2024-05-12 10:37:50,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:37:50,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:37:50,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-05-12 10:37:50,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40705128205128205 [2024-05-12 10:37:50,358 INFO L175 Difference]: Start difference. First operand has 162 places, 147 transitions, 1576 flow. Second operand 8 states and 127 transitions. [2024-05-12 10:37:50,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 170 transitions, 1986 flow [2024-05-12 10:37:50,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 170 transitions, 1900 flow, removed 33 selfloop flow, removed 3 redundant places. [2024-05-12 10:37:50,428 INFO L231 Difference]: Finished difference. Result has 167 places, 147 transitions, 1556 flow [2024-05-12 10:37:50,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1490, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1556, PETRI_PLACES=167, PETRI_TRANSITIONS=147} [2024-05-12 10:37:50,429 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 124 predicate places. [2024-05-12 10:37:50,429 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 147 transitions, 1556 flow [2024-05-12 10:37:50,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 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) [2024-05-12 10:37:50,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:37:50,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:37:50,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-05-12 10:37:50,429 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:37:50,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:37:50,430 INFO L85 PathProgramCache]: Analyzing trace with hash -330039350, now seen corresponding path program 1 times [2024-05-12 10:37:50,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:37:50,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775293568] [2024-05-12 10:37:50,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:37:50,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:37:50,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:37:54,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:37:54,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:37:54,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775293568] [2024-05-12 10:37:54,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775293568] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:37:54,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:37:54,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 10:37:54,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871685105] [2024-05-12 10:37:54,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:37:54,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 10:37:54,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:37:54,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 10:37:54,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 10:37:54,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:37:54,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 147 transitions, 1556 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-05-12 10:37:54,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:37:54,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:37:54,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:37:55,649 INFO L124 PetriNetUnfolderBase]: 858/1536 cut-off events. [2024-05-12 10:37:55,649 INFO L125 PetriNetUnfolderBase]: For 39674/39674 co-relation queries the response was YES. [2024-05-12 10:37:55,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9434 conditions, 1536 events. 858/1536 cut-off events. For 39674/39674 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7544 event pairs, 206 based on Foata normal form. 2/1471 useless extension candidates. Maximal degree in co-relation 9350. Up to 1294 conditions per place. [2024-05-12 10:37:55,661 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 141 selfloop transitions, 25 changer transitions 0/173 dead transitions. [2024-05-12 10:37:55,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 173 transitions, 2002 flow [2024-05-12 10:37:55,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:37:55,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:37:55,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2024-05-12 10:37:55,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39316239316239315 [2024-05-12 10:37:55,662 INFO L175 Difference]: Start difference. First operand has 167 places, 147 transitions, 1556 flow. Second operand 9 states and 138 transitions. [2024-05-12 10:37:55,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 173 transitions, 2002 flow [2024-05-12 10:37:55,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 173 transitions, 1937 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-05-12 10:37:55,734 INFO L231 Difference]: Finished difference. Result has 169 places, 149 transitions, 1582 flow [2024-05-12 10:37:55,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1491, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1582, PETRI_PLACES=169, PETRI_TRANSITIONS=149} [2024-05-12 10:37:55,735 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 126 predicate places. [2024-05-12 10:37:55,735 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 149 transitions, 1582 flow [2024-05-12 10:37:55,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-05-12 10:37:55,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:37:55,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:37:55,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-05-12 10:37:55,736 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:37:55,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:37:55,737 INFO L85 PathProgramCache]: Analyzing trace with hash -330045147, now seen corresponding path program 1 times [2024-05-12 10:37:55,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:37:55,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008123363] [2024-05-12 10:37:55,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:37:55,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:37:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:37:59,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:37:59,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:37:59,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008123363] [2024-05-12 10:37:59,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008123363] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:37:59,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:37:59,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 10:37:59,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457952466] [2024-05-12 10:37:59,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:37:59,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 10:37:59,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:37:59,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 10:37:59,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 10:37:59,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:37:59,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 149 transitions, 1582 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-05-12 10:37:59,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:37:59,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:37:59,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:38:00,401 INFO L124 PetriNetUnfolderBase]: 856/1533 cut-off events. [2024-05-12 10:38:00,401 INFO L125 PetriNetUnfolderBase]: For 37924/37924 co-relation queries the response was YES. [2024-05-12 10:38:00,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9391 conditions, 1533 events. 856/1533 cut-off events. For 37924/37924 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7535 event pairs, 205 based on Foata normal form. 1/1467 useless extension candidates. Maximal degree in co-relation 9306. Up to 1286 conditions per place. [2024-05-12 10:38:00,411 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 135 selfloop transitions, 28 changer transitions 0/170 dead transitions. [2024-05-12 10:38:00,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 170 transitions, 1980 flow [2024-05-12 10:38:00,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:38:00,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:38:00,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 125 transitions. [2024-05-12 10:38:00,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40064102564102566 [2024-05-12 10:38:00,413 INFO L175 Difference]: Start difference. First operand has 169 places, 149 transitions, 1582 flow. Second operand 8 states and 125 transitions. [2024-05-12 10:38:00,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 170 transitions, 1980 flow [2024-05-12 10:38:00,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 170 transitions, 1901 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-05-12 10:38:00,483 INFO L231 Difference]: Finished difference. Result has 170 places, 149 transitions, 1569 flow [2024-05-12 10:38:00,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1503, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1569, PETRI_PLACES=170, PETRI_TRANSITIONS=149} [2024-05-12 10:38:00,484 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 127 predicate places. [2024-05-12 10:38:00,484 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 149 transitions, 1569 flow [2024-05-12 10:38:00,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-05-12 10:38:00,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:38:00,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:38:00,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-05-12 10:38:00,485 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:38:00,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:38:00,485 INFO L85 PathProgramCache]: Analyzing trace with hash -214538651, now seen corresponding path program 1 times [2024-05-12 10:38:00,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:38:00,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943815586] [2024-05-12 10:38:00,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:38:00,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:38:00,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:38:08,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:38:08,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:38:08,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943815586] [2024-05-12 10:38:08,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943815586] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:38:08,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:38:08,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 10:38:08,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83745253] [2024-05-12 10:38:08,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:38:08,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 10:38:08,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:38:08,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 10:38:08,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 10:38:08,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:38:08,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 149 transitions, 1569 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-05-12 10:38:08,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:38:08,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:38:08,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:38:08,813 INFO L124 PetriNetUnfolderBase]: 861/1542 cut-off events. [2024-05-12 10:38:08,814 INFO L125 PetriNetUnfolderBase]: For 39775/39775 co-relation queries the response was YES. [2024-05-12 10:38:08,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9456 conditions, 1542 events. 861/1542 cut-off events. For 39775/39775 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 7589 event pairs, 232 based on Foata normal form. 1/1476 useless extension candidates. Maximal degree in co-relation 9370. Up to 1318 conditions per place. [2024-05-12 10:38:08,826 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 137 selfloop transitions, 29 changer transitions 0/173 dead transitions. [2024-05-12 10:38:08,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 173 transitions, 2029 flow [2024-05-12 10:38:08,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:38:08,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:38:08,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 137 transitions. [2024-05-12 10:38:08,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903133903133903 [2024-05-12 10:38:08,827 INFO L175 Difference]: Start difference. First operand has 170 places, 149 transitions, 1569 flow. Second operand 9 states and 137 transitions. [2024-05-12 10:38:08,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 173 transitions, 2029 flow [2024-05-12 10:38:08,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 173 transitions, 1956 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-05-12 10:38:08,907 INFO L231 Difference]: Finished difference. Result has 172 places, 151 transitions, 1606 flow [2024-05-12 10:38:08,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1496, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1606, PETRI_PLACES=172, PETRI_TRANSITIONS=151} [2024-05-12 10:38:08,909 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 129 predicate places. [2024-05-12 10:38:08,909 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 151 transitions, 1606 flow [2024-05-12 10:38:08,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-05-12 10:38:08,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:38:08,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:38:08,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-05-12 10:38:08,909 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:38:08,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:38:08,910 INFO L85 PathProgramCache]: Analyzing trace with hash -214754132, now seen corresponding path program 4 times [2024-05-12 10:38:08,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:38:08,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807127386] [2024-05-12 10:38:08,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:38:08,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:38:08,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:38:13,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:38:13,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:38:13,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807127386] [2024-05-12 10:38:13,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807127386] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:38:13,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:38:13,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 10:38:13,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261839181] [2024-05-12 10:38:13,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:38:13,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 10:38:13,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:38:13,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 10:38:13,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-05-12 10:38:13,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:38:13,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 151 transitions, 1606 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:38:13,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:38:13,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:38:13,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:38:14,619 INFO L124 PetriNetUnfolderBase]: 877/1570 cut-off events. [2024-05-12 10:38:14,620 INFO L125 PetriNetUnfolderBase]: For 42859/42859 co-relation queries the response was YES. [2024-05-12 10:38:14,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9699 conditions, 1570 events. 877/1570 cut-off events. For 42859/42859 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 7765 event pairs, 206 based on Foata normal form. 2/1505 useless extension candidates. Maximal degree in co-relation 9612. Up to 1277 conditions per place. [2024-05-12 10:38:14,632 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 132 selfloop transitions, 34 changer transitions 0/173 dead transitions. [2024-05-12 10:38:14,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 173 transitions, 2064 flow [2024-05-12 10:38:14,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:38:14,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:38:14,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-05-12 10:38:14,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-05-12 10:38:14,633 INFO L175 Difference]: Start difference. First operand has 172 places, 151 transitions, 1606 flow. Second operand 8 states and 130 transitions. [2024-05-12 10:38:14,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 173 transitions, 2064 flow [2024-05-12 10:38:14,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 173 transitions, 1980 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-05-12 10:38:14,716 INFO L231 Difference]: Finished difference. Result has 173 places, 153 transitions, 1655 flow [2024-05-12 10:38:14,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1522, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1655, PETRI_PLACES=173, PETRI_TRANSITIONS=153} [2024-05-12 10:38:14,717 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 130 predicate places. [2024-05-12 10:38:14,717 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 153 transitions, 1655 flow [2024-05-12 10:38:14,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:38:14,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:38:14,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:38:14,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-05-12 10:38:14,718 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:38:14,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:38:14,718 INFO L85 PathProgramCache]: Analyzing trace with hash -943763856, now seen corresponding path program 2 times [2024-05-12 10:38:14,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:38:14,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498968167] [2024-05-12 10:38:14,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:38:14,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:38:14,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:38:19,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:38:19,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:38:19,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498968167] [2024-05-12 10:38:19,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498968167] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:38:19,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:38:19,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 10:38:19,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697792453] [2024-05-12 10:38:19,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:38:19,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 10:38:19,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:38:19,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 10:38:19,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-05-12 10:38:19,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:38:19,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 153 transitions, 1655 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-05-12 10:38:19,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:38:19,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:38:19,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:38:20,384 INFO L124 PetriNetUnfolderBase]: 888/1587 cut-off events. [2024-05-12 10:38:20,384 INFO L125 PetriNetUnfolderBase]: For 45461/45461 co-relation queries the response was YES. [2024-05-12 10:38:20,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9910 conditions, 1587 events. 888/1587 cut-off events. For 45461/45461 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7856 event pairs, 206 based on Foata normal form. 2/1520 useless extension candidates. Maximal degree in co-relation 9822. Up to 1286 conditions per place. [2024-05-12 10:38:20,396 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 133 selfloop transitions, 36 changer transitions 0/176 dead transitions. [2024-05-12 10:38:20,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 176 transitions, 2097 flow [2024-05-12 10:38:20,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:38:20,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:38:20,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-05-12 10:38:20,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017094017094017 [2024-05-12 10:38:20,397 INFO L175 Difference]: Start difference. First operand has 173 places, 153 transitions, 1655 flow. Second operand 9 states and 141 transitions. [2024-05-12 10:38:20,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 176 transitions, 2097 flow [2024-05-12 10:38:20,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 176 transitions, 1980 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-05-12 10:38:20,478 INFO L231 Difference]: Finished difference. Result has 176 places, 155 transitions, 1655 flow [2024-05-12 10:38:20,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1538, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1655, PETRI_PLACES=176, PETRI_TRANSITIONS=155} [2024-05-12 10:38:20,479 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 133 predicate places. [2024-05-12 10:38:20,479 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 155 transitions, 1655 flow [2024-05-12 10:38:20,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-05-12 10:38:20,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:38:20,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:38:20,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-05-12 10:38:20,479 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:38:20,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:38:20,480 INFO L85 PathProgramCache]: Analyzing trace with hash -518066314, now seen corresponding path program 3 times [2024-05-12 10:38:20,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:38:20,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355093087] [2024-05-12 10:38:20,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:38:20,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:38:20,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:38:24,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:38:24,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:38:24,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355093087] [2024-05-12 10:38:24,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355093087] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:38:24,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:38:24,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 10:38:24,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876650878] [2024-05-12 10:38:24,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:38:24,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 10:38:24,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:38:24,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 10:38:24,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 10:38:24,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:38:24,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 155 transitions, 1655 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-05-12 10:38:24,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:38:24,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:38:24,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:38:25,708 INFO L124 PetriNetUnfolderBase]: 914/1627 cut-off events. [2024-05-12 10:38:25,708 INFO L125 PetriNetUnfolderBase]: For 49088/49088 co-relation queries the response was YES. [2024-05-12 10:38:25,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10271 conditions, 1627 events. 914/1627 cut-off events. For 49088/49088 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8104 event pairs, 200 based on Foata normal form. 2/1558 useless extension candidates. Maximal degree in co-relation 10182. Up to 1208 conditions per place. [2024-05-12 10:38:25,719 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 124 selfloop transitions, 53 changer transitions 0/184 dead transitions. [2024-05-12 10:38:25,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 184 transitions, 2267 flow [2024-05-12 10:38:25,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:38:25,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:38:25,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-05-12 10:38:25,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41595441595441596 [2024-05-12 10:38:25,721 INFO L175 Difference]: Start difference. First operand has 176 places, 155 transitions, 1655 flow. Second operand 9 states and 146 transitions. [2024-05-12 10:38:25,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 184 transitions, 2267 flow [2024-05-12 10:38:25,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 184 transitions, 2170 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-05-12 10:38:25,801 INFO L231 Difference]: Finished difference. Result has 178 places, 159 transitions, 1754 flow [2024-05-12 10:38:25,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1558, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1754, PETRI_PLACES=178, PETRI_TRANSITIONS=159} [2024-05-12 10:38:25,802 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 135 predicate places. [2024-05-12 10:38:25,802 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 159 transitions, 1754 flow [2024-05-12 10:38:25,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-05-12 10:38:25,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:38:25,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:38:25,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-05-12 10:38:25,803 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:38:25,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:38:25,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1255665316, now seen corresponding path program 4 times [2024-05-12 10:38:25,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:38:25,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99815113] [2024-05-12 10:38:25,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:38:25,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:38:25,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:38:29,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:38:29,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:38:29,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99815113] [2024-05-12 10:38:29,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99815113] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:38:29,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:38:29,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 10:38:29,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472256492] [2024-05-12 10:38:29,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:38:29,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 10:38:29,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:38:29,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 10:38:29,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 10:38:30,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:38:30,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 159 transitions, 1754 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-05-12 10:38:30,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:38:30,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:38:30,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:38:30,750 INFO L124 PetriNetUnfolderBase]: 918/1633 cut-off events. [2024-05-12 10:38:30,750 INFO L125 PetriNetUnfolderBase]: For 50148/50148 co-relation queries the response was YES. [2024-05-12 10:38:30,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10410 conditions, 1633 events. 918/1633 cut-off events. For 50148/50148 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8151 event pairs, 200 based on Foata normal form. 2/1563 useless extension candidates. Maximal degree in co-relation 10320. Up to 1277 conditions per place. [2024-05-12 10:38:30,762 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 132 selfloop transitions, 45 changer transitions 0/184 dead transitions. [2024-05-12 10:38:30,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 184 transitions, 2232 flow [2024-05-12 10:38:30,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:38:30,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:38:30,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-05-12 10:38:30,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-05-12 10:38:30,763 INFO L175 Difference]: Start difference. First operand has 178 places, 159 transitions, 1754 flow. Second operand 9 states and 143 transitions. [2024-05-12 10:38:30,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 184 transitions, 2232 flow [2024-05-12 10:38:30,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 184 transitions, 2134 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-05-12 10:38:30,846 INFO L231 Difference]: Finished difference. Result has 182 places, 161 transitions, 1799 flow [2024-05-12 10:38:30,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1660, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1799, PETRI_PLACES=182, PETRI_TRANSITIONS=161} [2024-05-12 10:38:30,847 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 139 predicate places. [2024-05-12 10:38:30,847 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 161 transitions, 1799 flow [2024-05-12 10:38:30,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-05-12 10:38:30,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:38:30,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:38:30,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-05-12 10:38:30,848 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:38:30,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:38:30,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1428731120, now seen corresponding path program 1 times [2024-05-12 10:38:30,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:38:30,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687852560] [2024-05-12 10:38:30,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:38:30,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:38:30,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:38:37,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:38:37,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:38:37,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687852560] [2024-05-12 10:38:37,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687852560] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:38:37,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:38:37,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 10:38:37,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739201948] [2024-05-12 10:38:37,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:38:37,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 10:38:37,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:38:37,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 10:38:37,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-05-12 10:38:38,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:38:38,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 161 transitions, 1799 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-05-12 10:38:38,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:38:38,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:38:38,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:38:38,957 INFO L124 PetriNetUnfolderBase]: 930/1653 cut-off events. [2024-05-12 10:38:38,957 INFO L125 PetriNetUnfolderBase]: For 51777/51780 co-relation queries the response was YES. [2024-05-12 10:38:38,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10606 conditions, 1653 events. 930/1653 cut-off events. For 51777/51780 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 8294 event pairs, 243 based on Foata normal form. 4/1581 useless extension candidates. Maximal degree in co-relation 10514. Up to 1429 conditions per place. [2024-05-12 10:38:38,973 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 157 selfloop transitions, 26 changer transitions 0/190 dead transitions. [2024-05-12 10:38:38,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 190 transitions, 2315 flow [2024-05-12 10:38:38,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:38:38,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:38:38,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 149 transitions. [2024-05-12 10:38:38,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.382051282051282 [2024-05-12 10:38:38,976 INFO L175 Difference]: Start difference. First operand has 182 places, 161 transitions, 1799 flow. Second operand 10 states and 149 transitions. [2024-05-12 10:38:38,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 190 transitions, 2315 flow [2024-05-12 10:38:39,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 190 transitions, 2200 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-05-12 10:38:39,081 INFO L231 Difference]: Finished difference. Result has 185 places, 163 transitions, 1781 flow [2024-05-12 10:38:39,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1684, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1781, PETRI_PLACES=185, PETRI_TRANSITIONS=163} [2024-05-12 10:38:39,081 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 142 predicate places. [2024-05-12 10:38:39,081 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 163 transitions, 1781 flow [2024-05-12 10:38:39,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-05-12 10:38:39,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:38:39,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:38:39,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-05-12 10:38:39,082 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:38:39,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:38:39,082 INFO L85 PathProgramCache]: Analyzing trace with hash 744185558, now seen corresponding path program 5 times [2024-05-12 10:38:39,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:38:39,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746522343] [2024-05-12 10:38:39,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:38:39,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:38:39,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:38:44,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:38:44,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:38:44,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746522343] [2024-05-12 10:38:44,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746522343] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:38:44,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:38:44,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 10:38:44,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984942128] [2024-05-12 10:38:44,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:38:44,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 10:38:44,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:38:44,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 10:38:44,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-05-12 10:38:44,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:38:44,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 163 transitions, 1781 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-05-12 10:38:44,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:38:44,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:38:44,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:38:45,032 INFO L124 PetriNetUnfolderBase]: 927/1647 cut-off events. [2024-05-12 10:38:45,032 INFO L125 PetriNetUnfolderBase]: For 50717/50720 co-relation queries the response was YES. [2024-05-12 10:38:45,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10429 conditions, 1647 events. 927/1647 cut-off events. For 50717/50720 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8182 event pairs, 224 based on Foata normal form. 2/1571 useless extension candidates. Maximal degree in co-relation 10336. Up to 1353 conditions per place. [2024-05-12 10:38:45,046 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 143 selfloop transitions, 34 changer transitions 0/184 dead transitions. [2024-05-12 10:38:45,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 184 transitions, 2263 flow [2024-05-12 10:38:45,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:38:45,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:38:45,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-05-12 10:38:45,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41025641025641024 [2024-05-12 10:38:45,051 INFO L175 Difference]: Start difference. First operand has 185 places, 163 transitions, 1781 flow. Second operand 8 states and 128 transitions. [2024-05-12 10:38:45,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 184 transitions, 2263 flow [2024-05-12 10:38:45,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 184 transitions, 2186 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-05-12 10:38:45,156 INFO L231 Difference]: Finished difference. Result has 185 places, 165 transitions, 1841 flow [2024-05-12 10:38:45,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1704, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1841, PETRI_PLACES=185, PETRI_TRANSITIONS=165} [2024-05-12 10:38:45,157 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 142 predicate places. [2024-05-12 10:38:45,157 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 165 transitions, 1841 flow [2024-05-12 10:38:45,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-05-12 10:38:45,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:38:45,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:38:45,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-05-12 10:38:45,157 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:38:45,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:38:45,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1149166974, now seen corresponding path program 5 times [2024-05-12 10:38:45,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:38:45,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287149495] [2024-05-12 10:38:45,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:38:45,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:38:45,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:38:49,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:38:49,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:38:49,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287149495] [2024-05-12 10:38:49,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287149495] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:38:49,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:38:49,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 10:38:49,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318839923] [2024-05-12 10:38:49,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:38:49,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 10:38:49,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:38:49,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 10:38:49,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-05-12 10:38:49,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:38:49,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 165 transitions, 1841 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-05-12 10:38:49,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:38:49,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:38:49,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:38:50,648 INFO L124 PetriNetUnfolderBase]: 938/1664 cut-off events. [2024-05-12 10:38:50,648 INFO L125 PetriNetUnfolderBase]: For 53410/53413 co-relation queries the response was YES. [2024-05-12 10:38:50,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10630 conditions, 1664 events. 938/1664 cut-off events. For 53410/53413 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8282 event pairs, 218 based on Foata normal form. 2/1586 useless extension candidates. Maximal degree in co-relation 10536. Up to 1321 conditions per place. [2024-05-12 10:38:50,661 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 139 selfloop transitions, 43 changer transitions 0/189 dead transitions. [2024-05-12 10:38:50,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 189 transitions, 2327 flow [2024-05-12 10:38:50,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:38:50,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:38:50,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-05-12 10:38:50,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-05-12 10:38:50,662 INFO L175 Difference]: Start difference. First operand has 185 places, 165 transitions, 1841 flow. Second operand 9 states and 143 transitions. [2024-05-12 10:38:50,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 189 transitions, 2327 flow [2024-05-12 10:38:50,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 189 transitions, 2206 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-05-12 10:38:50,759 INFO L231 Difference]: Finished difference. Result has 188 places, 167 transitions, 1860 flow [2024-05-12 10:38:50,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1720, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1860, PETRI_PLACES=188, PETRI_TRANSITIONS=167} [2024-05-12 10:38:50,759 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 145 predicate places. [2024-05-12 10:38:50,759 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 167 transitions, 1860 flow [2024-05-12 10:38:50,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-05-12 10:38:50,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:38:50,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:38:50,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-05-12 10:38:50,760 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:38:50,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:38:50,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1149159534, now seen corresponding path program 6 times [2024-05-12 10:38:50,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:38:50,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852273587] [2024-05-12 10:38:50,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:38:50,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:38:50,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:38:55,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:38:55,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:38:55,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852273587] [2024-05-12 10:38:55,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852273587] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:38:55,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:38:55,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 10:38:55,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106307482] [2024-05-12 10:38:55,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:38:55,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 10:38:55,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:38:55,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 10:38:55,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-05-12 10:38:55,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:38:55,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 167 transitions, 1860 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-05-12 10:38:55,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:38:55,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:38:55,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:38:56,305 INFO L124 PetriNetUnfolderBase]: 964/1704 cut-off events. [2024-05-12 10:38:56,305 INFO L125 PetriNetUnfolderBase]: For 58126/58129 co-relation queries the response was YES. [2024-05-12 10:38:56,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11064 conditions, 1704 events. 964/1704 cut-off events. For 58126/58129 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 8518 event pairs, 215 based on Foata normal form. 2/1624 useless extension candidates. Maximal degree in co-relation 10969. Up to 1314 conditions per place. [2024-05-12 10:38:56,317 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 139 selfloop transitions, 49 changer transitions 0/195 dead transitions. [2024-05-12 10:38:56,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 195 transitions, 2518 flow [2024-05-12 10:38:56,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:38:56,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:38:56,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-05-12 10:38:56,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41595441595441596 [2024-05-12 10:38:56,318 INFO L175 Difference]: Start difference. First operand has 188 places, 167 transitions, 1860 flow. Second operand 9 states and 146 transitions. [2024-05-12 10:38:56,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 195 transitions, 2518 flow [2024-05-12 10:38:56,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 195 transitions, 2400 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-05-12 10:38:56,421 INFO L231 Difference]: Finished difference. Result has 190 places, 171 transitions, 1946 flow [2024-05-12 10:38:56,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1742, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1946, PETRI_PLACES=190, PETRI_TRANSITIONS=171} [2024-05-12 10:38:56,421 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 147 predicate places. [2024-05-12 10:38:56,421 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 171 transitions, 1946 flow [2024-05-12 10:38:56,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-05-12 10:38:56,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:38:56,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:38:56,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-05-12 10:38:56,422 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:38:56,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:38:56,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1149368784, now seen corresponding path program 7 times [2024-05-12 10:38:56,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:38:56,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770723865] [2024-05-12 10:38:56,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:38:56,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:38:56,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:39:00,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:39:00,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:39:00,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770723865] [2024-05-12 10:39:00,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770723865] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:39:00,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:39:00,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 10:39:00,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195458525] [2024-05-12 10:39:00,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:39:00,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 10:39:00,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:39:00,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 10:39:00,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-05-12 10:39:00,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:39:00,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 171 transitions, 1946 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-05-12 10:39:00,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:39:00,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:39:00,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:39:01,353 INFO L124 PetriNetUnfolderBase]: 960/1698 cut-off events. [2024-05-12 10:39:01,354 INFO L125 PetriNetUnfolderBase]: For 57532/57535 co-relation queries the response was YES. [2024-05-12 10:39:01,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10961 conditions, 1698 events. 960/1698 cut-off events. For 57532/57535 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 8471 event pairs, 224 based on Foata normal form. 2/1618 useless extension candidates. Maximal degree in co-relation 10865. Up to 1396 conditions per place. [2024-05-12 10:39:01,368 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 148 selfloop transitions, 36 changer transitions 0/191 dead transitions. [2024-05-12 10:39:01,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 191 transitions, 2380 flow [2024-05-12 10:39:01,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:39:01,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:39:01,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 139 transitions. [2024-05-12 10:39:01,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396011396011396 [2024-05-12 10:39:01,369 INFO L175 Difference]: Start difference. First operand has 190 places, 171 transitions, 1946 flow. Second operand 9 states and 139 transitions. [2024-05-12 10:39:01,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 191 transitions, 2380 flow [2024-05-12 10:39:01,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 191 transitions, 2256 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-05-12 10:39:01,485 INFO L231 Difference]: Finished difference. Result has 194 places, 171 transitions, 1899 flow [2024-05-12 10:39:01,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1822, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1899, PETRI_PLACES=194, PETRI_TRANSITIONS=171} [2024-05-12 10:39:01,485 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 151 predicate places. [2024-05-12 10:39:01,485 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 171 transitions, 1899 flow [2024-05-12 10:39:01,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-05-12 10:39:01,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:39:01,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:39:01,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-05-12 10:39:01,491 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:39:01,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:39:01,491 INFO L85 PathProgramCache]: Analyzing trace with hash -63127854, now seen corresponding path program 8 times [2024-05-12 10:39:01,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:39:01,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72958614] [2024-05-12 10:39:01,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:39:01,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:39:01,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:39:05,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:39:05,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:39:05,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72958614] [2024-05-12 10:39:05,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72958614] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:39:05,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:39:05,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 10:39:05,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451357117] [2024-05-12 10:39:05,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:39:05,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 10:39:05,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:39:05,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 10:39:05,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 10:39:05,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:39:05,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 171 transitions, 1899 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-05-12 10:39:05,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:39:05,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:39:05,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:39:06,604 INFO L124 PetriNetUnfolderBase]: 986/1738 cut-off events. [2024-05-12 10:39:06,604 INFO L125 PetriNetUnfolderBase]: For 61997/62000 co-relation queries the response was YES. [2024-05-12 10:39:06,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11389 conditions, 1738 events. 986/1738 cut-off events. For 61997/62000 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 8699 event pairs, 197 based on Foata normal form. 2/1656 useless extension candidates. Maximal degree in co-relation 11291. Up to 1282 conditions per place. [2024-05-12 10:39:06,619 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 134 selfloop transitions, 59 changer transitions 0/200 dead transitions. [2024-05-12 10:39:06,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 200 transitions, 2587 flow [2024-05-12 10:39:06,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:39:06,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:39:06,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-05-12 10:39:06,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4188034188034188 [2024-05-12 10:39:06,624 INFO L175 Difference]: Start difference. First operand has 194 places, 171 transitions, 1899 flow. Second operand 9 states and 147 transitions. [2024-05-12 10:39:06,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 200 transitions, 2587 flow [2024-05-12 10:39:06,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 200 transitions, 2497 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-05-12 10:39:06,761 INFO L231 Difference]: Finished difference. Result has 195 places, 175 transitions, 2040 flow [2024-05-12 10:39:06,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1809, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2040, PETRI_PLACES=195, PETRI_TRANSITIONS=175} [2024-05-12 10:39:06,762 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 152 predicate places. [2024-05-12 10:39:06,762 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 175 transitions, 2040 flow [2024-05-12 10:39:06,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-05-12 10:39:06,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:39:06,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:39:06,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-05-12 10:39:06,763 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:39:06,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:39:06,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1149159255, now seen corresponding path program 2 times [2024-05-12 10:39:06,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:39:06,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774299912] [2024-05-12 10:39:06,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:39:06,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:39:06,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:39:12,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:39:12,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:39:12,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774299912] [2024-05-12 10:39:12,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774299912] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:39:12,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:39:12,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 10:39:12,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300129915] [2024-05-12 10:39:12,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:39:12,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 10:39:12,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:39:12,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 10:39:12,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-05-12 10:39:12,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:39:12,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 175 transitions, 2040 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-05-12 10:39:12,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:39:12,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:39:12,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:39:13,072 INFO L124 PetriNetUnfolderBase]: 984/1736 cut-off events. [2024-05-12 10:39:13,072 INFO L125 PetriNetUnfolderBase]: For 61914/61917 co-relation queries the response was YES. [2024-05-12 10:39:13,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11469 conditions, 1736 events. 984/1736 cut-off events. For 61914/61917 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 8738 event pairs, 256 based on Foata normal form. 3/1656 useless extension candidates. Maximal degree in co-relation 11370. Up to 1510 conditions per place. [2024-05-12 10:39:13,088 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 161 selfloop transitions, 29 changer transitions 0/197 dead transitions. [2024-05-12 10:39:13,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 197 transitions, 2548 flow [2024-05-12 10:39:13,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:39:13,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:39:13,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 135 transitions. [2024-05-12 10:39:13,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2024-05-12 10:39:13,089 INFO L175 Difference]: Start difference. First operand has 195 places, 175 transitions, 2040 flow. Second operand 9 states and 135 transitions. [2024-05-12 10:39:13,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 197 transitions, 2548 flow [2024-05-12 10:39:13,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 197 transitions, 2418 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-05-12 10:39:13,232 INFO L231 Difference]: Finished difference. Result has 199 places, 177 transitions, 2026 flow [2024-05-12 10:39:13,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1910, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2026, PETRI_PLACES=199, PETRI_TRANSITIONS=177} [2024-05-12 10:39:13,232 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 156 predicate places. [2024-05-12 10:39:13,232 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 177 transitions, 2026 flow [2024-05-12 10:39:13,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-05-12 10:39:13,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:39:13,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:39:13,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-05-12 10:39:13,233 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:39:13,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:39:13,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1141740304, now seen corresponding path program 2 times [2024-05-12 10:39:13,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:39:13,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731990453] [2024-05-12 10:39:13,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:39:13,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:39:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:39:19,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:39:19,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:39:19,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731990453] [2024-05-12 10:39:19,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731990453] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:39:19,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:39:19,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 10:39:19,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848809474] [2024-05-12 10:39:19,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:39:19,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 10:39:19,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:39:19,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 10:39:19,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-05-12 10:39:19,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:39:19,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 177 transitions, 2026 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-05-12 10:39:19,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:39:19,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:39:19,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:39:20,366 INFO L124 PetriNetUnfolderBase]: 996/1754 cut-off events. [2024-05-12 10:39:20,367 INFO L125 PetriNetUnfolderBase]: For 64233/64236 co-relation queries the response was YES. [2024-05-12 10:39:20,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11567 conditions, 1754 events. 996/1754 cut-off events. For 64233/64236 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 8823 event pairs, 256 based on Foata normal form. 4/1673 useless extension candidates. Maximal degree in co-relation 11466. Up to 1530 conditions per place. [2024-05-12 10:39:20,379 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 169 selfloop transitions, 26 changer transitions 0/202 dead transitions. [2024-05-12 10:39:20,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 202 transitions, 2554 flow [2024-05-12 10:39:20,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:39:20,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:39:20,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 147 transitions. [2024-05-12 10:39:20,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3769230769230769 [2024-05-12 10:39:20,388 INFO L175 Difference]: Start difference. First operand has 199 places, 177 transitions, 2026 flow. Second operand 10 states and 147 transitions. [2024-05-12 10:39:20,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 202 transitions, 2554 flow [2024-05-12 10:39:20,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 202 transitions, 2464 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-05-12 10:39:20,540 INFO L231 Difference]: Finished difference. Result has 202 places, 179 transitions, 2039 flow [2024-05-12 10:39:20,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1936, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2039, PETRI_PLACES=202, PETRI_TRANSITIONS=179} [2024-05-12 10:39:20,552 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 159 predicate places. [2024-05-12 10:39:20,552 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 179 transitions, 2039 flow [2024-05-12 10:39:20,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-05-12 10:39:20,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:39:20,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:39:20,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-05-12 10:39:20,553 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:39:20,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:39:20,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1533346980, now seen corresponding path program 9 times [2024-05-12 10:39:20,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:39:20,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826475773] [2024-05-12 10:39:20,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:39:20,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:39:20,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:39:24,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:39:24,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:39:24,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826475773] [2024-05-12 10:39:24,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826475773] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:39:24,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:39:24,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 10:39:24,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921266335] [2024-05-12 10:39:24,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:39:24,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 10:39:24,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:39:24,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 10:39:24,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 10:39:24,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:39:24,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 179 transitions, 2039 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-05-12 10:39:24,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:39:24,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:39:24,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:39:25,437 INFO L124 PetriNetUnfolderBase]: 992/1747 cut-off events. [2024-05-12 10:39:25,437 INFO L125 PetriNetUnfolderBase]: For 63092/63095 co-relation queries the response was YES. [2024-05-12 10:39:25,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11453 conditions, 1747 events. 992/1747 cut-off events. For 63092/63095 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 8761 event pairs, 197 based on Foata normal form. 2/1663 useless extension candidates. Maximal degree in co-relation 11351. Up to 1317 conditions per place. [2024-05-12 10:39:25,452 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 138 selfloop transitions, 56 changer transitions 0/201 dead transitions. [2024-05-12 10:39:25,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 201 transitions, 2509 flow [2024-05-12 10:39:25,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:39:25,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:39:25,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-05-12 10:39:25,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4045584045584046 [2024-05-12 10:39:25,453 INFO L175 Difference]: Start difference. First operand has 202 places, 179 transitions, 2039 flow. Second operand 9 states and 142 transitions. [2024-05-12 10:39:25,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 201 transitions, 2509 flow [2024-05-12 10:39:25,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 201 transitions, 2396 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-05-12 10:39:25,599 INFO L231 Difference]: Finished difference. Result has 203 places, 179 transitions, 2043 flow [2024-05-12 10:39:25,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1926, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2043, PETRI_PLACES=203, PETRI_TRANSITIONS=179} [2024-05-12 10:39:25,600 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 160 predicate places. [2024-05-12 10:39:25,600 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 179 transitions, 2043 flow [2024-05-12 10:39:25,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-05-12 10:39:25,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:39:25,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:39:25,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-05-12 10:39:25,600 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:39:25,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:39:25,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1533070150, now seen corresponding path program 3 times [2024-05-12 10:39:25,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:39:25,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866150417] [2024-05-12 10:39:25,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:39:25,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:39:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:39:31,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:39:31,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:39:31,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866150417] [2024-05-12 10:39:31,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866150417] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:39:31,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:39:31,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 10:39:31,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730310582] [2024-05-12 10:39:31,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:39:31,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 10:39:31,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:39:31,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 10:39:31,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-05-12 10:39:31,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:39:31,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 179 transitions, 2043 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-05-12 10:39:31,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:39:31,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:39:31,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:39:32,658 INFO L124 PetriNetUnfolderBase]: 996/1754 cut-off events. [2024-05-12 10:39:32,658 INFO L125 PetriNetUnfolderBase]: For 63568/63571 co-relation queries the response was YES. [2024-05-12 10:39:32,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11531 conditions, 1754 events. 996/1754 cut-off events. For 63568/63571 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 8833 event pairs, 240 based on Foata normal form. 4/1672 useless extension candidates. Maximal degree in co-relation 11428. Up to 1495 conditions per place. [2024-05-12 10:39:32,674 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 164 selfloop transitions, 34 changer transitions 0/205 dead transitions. [2024-05-12 10:39:32,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 205 transitions, 2589 flow [2024-05-12 10:39:32,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:39:32,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:39:32,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 149 transitions. [2024-05-12 10:39:32,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.382051282051282 [2024-05-12 10:39:32,675 INFO L175 Difference]: Start difference. First operand has 203 places, 179 transitions, 2043 flow. Second operand 10 states and 149 transitions. [2024-05-12 10:39:32,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 205 transitions, 2589 flow [2024-05-12 10:39:32,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 205 transitions, 2472 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-05-12 10:39:32,840 INFO L231 Difference]: Finished difference. Result has 205 places, 181 transitions, 2049 flow [2024-05-12 10:39:32,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1926, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2049, PETRI_PLACES=205, PETRI_TRANSITIONS=181} [2024-05-12 10:39:32,841 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 162 predicate places. [2024-05-12 10:39:32,841 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 181 transitions, 2049 flow [2024-05-12 10:39:32,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-05-12 10:39:32,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:39:32,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:39:32,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-05-12 10:39:32,842 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:39:32,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:39:32,842 INFO L85 PathProgramCache]: Analyzing trace with hash -579889616, now seen corresponding path program 10 times [2024-05-12 10:39:32,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:39:32,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652351469] [2024-05-12 10:39:32,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:39:32,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:39:32,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:39:36,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:39:36,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:39:36,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652351469] [2024-05-12 10:39:36,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652351469] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:39:36,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:39:36,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 10:39:36,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320154216] [2024-05-12 10:39:36,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:39:36,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 10:39:36,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:39:36,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 10:39:36,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-05-12 10:39:36,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:39:36,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 181 transitions, 2049 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:39:36,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:39:36,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:39:36,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:39:37,566 INFO L124 PetriNetUnfolderBase]: 992/1745 cut-off events. [2024-05-12 10:39:37,567 INFO L125 PetriNetUnfolderBase]: For 61862/61862 co-relation queries the response was YES. [2024-05-12 10:39:37,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11316 conditions, 1745 events. 992/1745 cut-off events. For 61862/61862 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 8755 event pairs, 266 based on Foata normal form. 2/1665 useless extension candidates. Maximal degree in co-relation 11212. Up to 1604 conditions per place. [2024-05-12 10:39:37,584 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 179 selfloop transitions, 14 changer transitions 0/200 dead transitions. [2024-05-12 10:39:37,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 200 transitions, 2549 flow [2024-05-12 10:39:37,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:39:37,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:39:37,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 129 transitions. [2024-05-12 10:39:37,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36752136752136755 [2024-05-12 10:39:37,586 INFO L175 Difference]: Start difference. First operand has 205 places, 181 transitions, 2049 flow. Second operand 9 states and 129 transitions. [2024-05-12 10:39:37,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 200 transitions, 2549 flow [2024-05-12 10:39:37,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 200 transitions, 2446 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-05-12 10:39:37,744 INFO L231 Difference]: Finished difference. Result has 206 places, 183 transitions, 2039 flow [2024-05-12 10:39:37,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1946, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2039, PETRI_PLACES=206, PETRI_TRANSITIONS=183} [2024-05-12 10:39:37,745 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 163 predicate places. [2024-05-12 10:39:37,745 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 183 transitions, 2039 flow [2024-05-12 10:39:37,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:39:37,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:39:37,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:39:37,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-05-12 10:39:37,745 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:39:37,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:39:37,746 INFO L85 PathProgramCache]: Analyzing trace with hash -579879696, now seen corresponding path program 4 times [2024-05-12 10:39:37,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:39:37,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723019766] [2024-05-12 10:39:37,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:39:37,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:39:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:39:43,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:39:43,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:39:43,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723019766] [2024-05-12 10:39:43,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723019766] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:39:43,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:39:43,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 10:39:43,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506486603] [2024-05-12 10:39:43,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:39:43,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 10:39:43,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:39:43,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 10:39:43,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-05-12 10:39:43,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:39:43,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 183 transitions, 2039 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-05-12 10:39:43,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:39:43,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:39:43,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:39:44,620 INFO L124 PetriNetUnfolderBase]: 988/1742 cut-off events. [2024-05-12 10:39:44,620 INFO L125 PetriNetUnfolderBase]: For 60428/60431 co-relation queries the response was YES. [2024-05-12 10:39:44,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11096 conditions, 1742 events. 988/1742 cut-off events. For 60428/60431 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 8787 event pairs, 227 based on Foata normal form. 4/1660 useless extension candidates. Maximal degree in co-relation 10991. Up to 1289 conditions per place. [2024-05-12 10:39:44,635 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 143 selfloop transitions, 60 changer transitions 0/210 dead transitions. [2024-05-12 10:39:44,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 210 transitions, 2715 flow [2024-05-12 10:39:44,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:39:44,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:39:44,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-05-12 10:39:44,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3974358974358974 [2024-05-12 10:39:44,636 INFO L175 Difference]: Start difference. First operand has 206 places, 183 transitions, 2039 flow. Second operand 10 states and 155 transitions. [2024-05-12 10:39:44,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 210 transitions, 2715 flow [2024-05-12 10:39:44,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 210 transitions, 2642 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-05-12 10:39:44,797 INFO L231 Difference]: Finished difference. Result has 210 places, 185 transitions, 2176 flow [2024-05-12 10:39:44,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1966, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2176, PETRI_PLACES=210, PETRI_TRANSITIONS=185} [2024-05-12 10:39:44,797 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 167 predicate places. [2024-05-12 10:39:44,797 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 185 transitions, 2176 flow [2024-05-12 10:39:44,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-05-12 10:39:44,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:39:44,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:39:44,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-05-12 10:39:44,798 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:39:44,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:39:44,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1523815720, now seen corresponding path program 5 times [2024-05-12 10:39:44,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:39:44,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527588455] [2024-05-12 10:39:44,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:39:44,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:39:44,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:39:51,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:39:51,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:39:51,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527588455] [2024-05-12 10:39:51,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527588455] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:39:51,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:39:51,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 10:39:51,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851320420] [2024-05-12 10:39:51,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:39:51,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 10:39:51,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:39:51,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 10:39:51,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-05-12 10:39:51,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:39:51,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 185 transitions, 2176 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-05-12 10:39:51,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:39:51,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:39:51,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:39:52,313 INFO L124 PetriNetUnfolderBase]: 984/1733 cut-off events. [2024-05-12 10:39:52,313 INFO L125 PetriNetUnfolderBase]: For 58293/58293 co-relation queries the response was YES. [2024-05-12 10:39:52,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11182 conditions, 1733 events. 984/1733 cut-off events. For 58293/58293 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 8705 event pairs, 264 based on Foata normal form. 2/1653 useless extension candidates. Maximal degree in co-relation 11075. Up to 1569 conditions per place. [2024-05-12 10:39:52,329 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 180 selfloop transitions, 19 changer transitions 0/206 dead transitions. [2024-05-12 10:39:52,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 206 transitions, 2648 flow [2024-05-12 10:39:52,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 10:39:52,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 10:39:52,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 154 transitions. [2024-05-12 10:39:52,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.358974358974359 [2024-05-12 10:39:52,331 INFO L175 Difference]: Start difference. First operand has 210 places, 185 transitions, 2176 flow. Second operand 11 states and 154 transitions. [2024-05-12 10:39:52,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 206 transitions, 2648 flow [2024-05-12 10:39:52,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 206 transitions, 2509 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-05-12 10:39:52,507 INFO L231 Difference]: Finished difference. Result has 212 places, 185 transitions, 2080 flow [2024-05-12 10:39:52,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2037, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2080, PETRI_PLACES=212, PETRI_TRANSITIONS=185} [2024-05-12 10:39:52,508 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 169 predicate places. [2024-05-12 10:39:52,508 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 185 transitions, 2080 flow [2024-05-12 10:39:52,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-05-12 10:39:52,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:39:52,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:39:52,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-05-12 10:39:52,509 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:39:52,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:39:52,509 INFO L85 PathProgramCache]: Analyzing trace with hash 896854530, now seen corresponding path program 1 times [2024-05-12 10:39:52,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:39:52,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719262666] [2024-05-12 10:39:52,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:39:52,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:39:52,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:39:56,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:39:56,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:39:56,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719262666] [2024-05-12 10:39:56,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719262666] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:39:56,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:39:56,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 10:39:56,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388849441] [2024-05-12 10:39:56,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:39:56,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 10:39:56,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:39:56,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 10:39:56,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-05-12 10:39:56,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:39:56,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 185 transitions, 2080 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:39:56,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:39:56,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:39:56,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:39:57,445 INFO L124 PetriNetUnfolderBase]: 1000/1763 cut-off events. [2024-05-12 10:39:57,445 INFO L125 PetriNetUnfolderBase]: For 60545/60545 co-relation queries the response was YES. [2024-05-12 10:39:57,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11200 conditions, 1763 events. 1000/1763 cut-off events. For 60545/60545 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 8895 event pairs, 133 based on Foata normal form. 2/1685 useless extension candidates. Maximal degree in co-relation 11093. Up to 1421 conditions per place. [2024-05-12 10:39:57,462 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 185 selfloop transitions, 32 changer transitions 0/224 dead transitions. [2024-05-12 10:39:57,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 224 transitions, 2733 flow [2024-05-12 10:39:57,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:39:57,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:39:57,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-05-12 10:39:57,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-05-12 10:39:57,464 INFO L175 Difference]: Start difference. First operand has 212 places, 185 transitions, 2080 flow. Second operand 10 states and 156 transitions. [2024-05-12 10:39:57,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 224 transitions, 2733 flow [2024-05-12 10:39:57,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 224 transitions, 2682 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-05-12 10:39:57,626 INFO L231 Difference]: Finished difference. Result has 214 places, 193 transitions, 2235 flow [2024-05-12 10:39:57,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2029, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2235, PETRI_PLACES=214, PETRI_TRANSITIONS=193} [2024-05-12 10:39:57,627 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 171 predicate places. [2024-05-12 10:39:57,628 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 193 transitions, 2235 flow [2024-05-12 10:39:57,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:39:57,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:39:57,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:39:57,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-05-12 10:39:57,628 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:39:57,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:39:57,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1331120672, now seen corresponding path program 2 times [2024-05-12 10:39:57,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:39:57,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548874728] [2024-05-12 10:39:57,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:39:57,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:39:57,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:40:01,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:40:01,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:40:01,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548874728] [2024-05-12 10:40:01,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548874728] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:40:01,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:40:01,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 10:40:01,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476976313] [2024-05-12 10:40:01,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:40:01,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 10:40:01,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:40:01,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 10:40:01,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 10:40:02,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:40:02,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 193 transitions, 2235 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:40:02,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:40:02,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:40:02,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:40:02,860 INFO L124 PetriNetUnfolderBase]: 1016/1791 cut-off events. [2024-05-12 10:40:02,860 INFO L125 PetriNetUnfolderBase]: For 62842/62842 co-relation queries the response was YES. [2024-05-12 10:40:02,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11637 conditions, 1791 events. 1016/1791 cut-off events. For 62842/62842 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 9092 event pairs, 226 based on Foata normal form. 2/1711 useless extension candidates. Maximal degree in co-relation 11527. Up to 1520 conditions per place. [2024-05-12 10:40:02,877 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 184 selfloop transitions, 30 changer transitions 0/221 dead transitions. [2024-05-12 10:40:02,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 221 transitions, 2831 flow [2024-05-12 10:40:02,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:40:02,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:40:02,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-05-12 10:40:02,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39886039886039887 [2024-05-12 10:40:02,879 INFO L175 Difference]: Start difference. First operand has 214 places, 193 transitions, 2235 flow. Second operand 9 states and 140 transitions. [2024-05-12 10:40:02,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 221 transitions, 2831 flow [2024-05-12 10:40:03,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 221 transitions, 2710 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-05-12 10:40:03,037 INFO L231 Difference]: Finished difference. Result has 217 places, 195 transitions, 2254 flow [2024-05-12 10:40:03,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2114, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2254, PETRI_PLACES=217, PETRI_TRANSITIONS=195} [2024-05-12 10:40:03,053 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 174 predicate places. [2024-05-12 10:40:03,053 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 195 transitions, 2254 flow [2024-05-12 10:40:03,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:40:03,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:40:03,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:40:03,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-05-12 10:40:03,054 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:40:03,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:40:03,054 INFO L85 PathProgramCache]: Analyzing trace with hash 103942168, now seen corresponding path program 3 times [2024-05-12 10:40:03,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:40:03,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796290387] [2024-05-12 10:40:03,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:40:03,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:40:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:40:07,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:40:07,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:40:07,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796290387] [2024-05-12 10:40:07,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796290387] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:40:07,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:40:07,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 10:40:07,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512586404] [2024-05-12 10:40:07,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:40:07,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 10:40:07,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:40:07,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 10:40:07,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-05-12 10:40:07,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:40:07,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 195 transitions, 2254 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:40:07,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:40:07,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:40:07,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:40:08,524 INFO L124 PetriNetUnfolderBase]: 1032/1820 cut-off events. [2024-05-12 10:40:08,525 INFO L125 PetriNetUnfolderBase]: For 66359/66359 co-relation queries the response was YES. [2024-05-12 10:40:08,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11816 conditions, 1820 events. 1032/1820 cut-off events. For 66359/66359 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 9294 event pairs, 218 based on Foata normal form. 2/1740 useless extension candidates. Maximal degree in co-relation 11705. Up to 1525 conditions per place. [2024-05-12 10:40:08,540 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 189 selfloop transitions, 29 changer transitions 0/225 dead transitions. [2024-05-12 10:40:08,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 225 transitions, 2870 flow [2024-05-12 10:40:08,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:40:08,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:40:08,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-05-12 10:40:08,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017094017094017 [2024-05-12 10:40:08,542 INFO L175 Difference]: Start difference. First operand has 217 places, 195 transitions, 2254 flow. Second operand 9 states and 141 transitions. [2024-05-12 10:40:08,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 225 transitions, 2870 flow [2024-05-12 10:40:08,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 225 transitions, 2748 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-05-12 10:40:08,734 INFO L231 Difference]: Finished difference. Result has 220 places, 198 transitions, 2287 flow [2024-05-12 10:40:08,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2132, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2287, PETRI_PLACES=220, PETRI_TRANSITIONS=198} [2024-05-12 10:40:08,735 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 177 predicate places. [2024-05-12 10:40:08,735 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 198 transitions, 2287 flow [2024-05-12 10:40:08,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:40:08,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:40:08,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:40:08,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-05-12 10:40:08,736 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:40:08,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:40:08,736 INFO L85 PathProgramCache]: Analyzing trace with hash 985604864, now seen corresponding path program 1 times [2024-05-12 10:40:08,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:40:08,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178757251] [2024-05-12 10:40:08,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:40:08,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:40:08,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:40:15,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:40:15,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:40:15,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178757251] [2024-05-12 10:40:15,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178757251] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:40:15,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:40:15,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 10:40:15,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976900151] [2024-05-12 10:40:15,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:40:15,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 10:40:15,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:40:15,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 10:40:15,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 10:40:15,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:40:15,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 198 transitions, 2287 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:40:15,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:40:15,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:40:15,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:40:16,293 INFO L124 PetriNetUnfolderBase]: 1043/1837 cut-off events. [2024-05-12 10:40:16,293 INFO L125 PetriNetUnfolderBase]: For 67899/67899 co-relation queries the response was YES. [2024-05-12 10:40:16,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11922 conditions, 1837 events. 1043/1837 cut-off events. For 67899/67899 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 9378 event pairs, 227 based on Foata normal form. 2/1754 useless extension candidates. Maximal degree in co-relation 11809. Up to 1579 conditions per place. [2024-05-12 10:40:16,307 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 193 selfloop transitions, 27 changer transitions 0/227 dead transitions. [2024-05-12 10:40:16,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 227 transitions, 2871 flow [2024-05-12 10:40:16,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:40:16,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:40:16,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 151 transitions. [2024-05-12 10:40:16,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3871794871794872 [2024-05-12 10:40:16,308 INFO L175 Difference]: Start difference. First operand has 220 places, 198 transitions, 2287 flow. Second operand 10 states and 151 transitions. [2024-05-12 10:40:16,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 227 transitions, 2871 flow [2024-05-12 10:40:16,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 227 transitions, 2754 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-05-12 10:40:16,536 INFO L231 Difference]: Finished difference. Result has 224 places, 200 transitions, 2285 flow [2024-05-12 10:40:16,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2170, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2285, PETRI_PLACES=224, PETRI_TRANSITIONS=200} [2024-05-12 10:40:16,537 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 181 predicate places. [2024-05-12 10:40:16,537 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 200 transitions, 2285 flow [2024-05-12 10:40:16,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:40:16,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:40:16,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:40:16,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-05-12 10:40:16,541 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:40:16,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:40:16,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1641464180, now seen corresponding path program 1 times [2024-05-12 10:40:16,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:40:16,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680782880] [2024-05-12 10:40:16,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:40:16,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:40:16,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:40:21,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:40:21,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:40:21,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680782880] [2024-05-12 10:40:21,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680782880] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:40:21,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:40:21,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 10:40:21,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960197684] [2024-05-12 10:40:21,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:40:21,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 10:40:21,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:40:21,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 10:40:21,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-05-12 10:40:21,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:40:21,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 200 transitions, 2285 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:40:21,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:40:21,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:40:21,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:40:22,313 INFO L124 PetriNetUnfolderBase]: 1041/1834 cut-off events. [2024-05-12 10:40:22,313 INFO L125 PetriNetUnfolderBase]: For 64297/64297 co-relation queries the response was YES. [2024-05-12 10:40:22,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11747 conditions, 1834 events. 1041/1834 cut-off events. For 64297/64297 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 9371 event pairs, 226 based on Foata normal form. 1/1750 useless extension candidates. Maximal degree in co-relation 11633. Up to 1566 conditions per place. [2024-05-12 10:40:22,328 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 185 selfloop transitions, 32 changer transitions 0/224 dead transitions. [2024-05-12 10:40:22,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 224 transitions, 2801 flow [2024-05-12 10:40:22,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:40:22,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:40:22,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2024-05-12 10:40:22,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39316239316239315 [2024-05-12 10:40:22,329 INFO L175 Difference]: Start difference. First operand has 224 places, 200 transitions, 2285 flow. Second operand 9 states and 138 transitions. [2024-05-12 10:40:22,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 224 transitions, 2801 flow [2024-05-12 10:40:22,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 224 transitions, 2690 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-05-12 10:40:22,573 INFO L231 Difference]: Finished difference. Result has 225 places, 200 transitions, 2246 flow [2024-05-12 10:40:22,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2174, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2246, PETRI_PLACES=225, PETRI_TRANSITIONS=200} [2024-05-12 10:40:22,574 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 182 predicate places. [2024-05-12 10:40:22,574 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 200 transitions, 2246 flow [2024-05-12 10:40:22,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:40:22,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:40:22,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:40:22,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-05-12 10:40:22,574 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:40:22,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:40:22,575 INFO L85 PathProgramCache]: Analyzing trace with hash 252716562, now seen corresponding path program 2 times [2024-05-12 10:40:22,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:40:22,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442268850] [2024-05-12 10:40:22,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:40:22,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:40:22,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:40:28,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:40:28,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:40:28,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442268850] [2024-05-12 10:40:28,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442268850] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:40:28,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:40:28,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 10:40:28,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147433176] [2024-05-12 10:40:28,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:40:28,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 10:40:28,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:40:28,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 10:40:28,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-05-12 10:40:28,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:40:28,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 200 transitions, 2246 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:40:28,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:40:28,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:40:28,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:40:29,891 INFO L124 PetriNetUnfolderBase]: 1082/1897 cut-off events. [2024-05-12 10:40:29,892 INFO L125 PetriNetUnfolderBase]: For 78334/78334 co-relation queries the response was YES. [2024-05-12 10:40:29,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12507 conditions, 1897 events. 1082/1897 cut-off events. For 78334/78334 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 9754 event pairs, 209 based on Foata normal form. 2/1811 useless extension candidates. Maximal degree in co-relation 12392. Up to 1392 conditions per place. [2024-05-12 10:40:29,910 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 167 selfloop transitions, 61 changer transitions 0/235 dead transitions. [2024-05-12 10:40:29,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 235 transitions, 3224 flow [2024-05-12 10:40:29,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:40:29,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:40:29,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-05-12 10:40:29,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153846153846154 [2024-05-12 10:40:29,911 INFO L175 Difference]: Start difference. First operand has 225 places, 200 transitions, 2246 flow. Second operand 10 states and 162 transitions. [2024-05-12 10:40:29,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 235 transitions, 3224 flow [2024-05-12 10:40:30,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 235 transitions, 3136 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-05-12 10:40:30,158 INFO L231 Difference]: Finished difference. Result has 227 places, 206 transitions, 2457 flow [2024-05-12 10:40:30,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2158, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2457, PETRI_PLACES=227, PETRI_TRANSITIONS=206} [2024-05-12 10:40:30,158 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 184 predicate places. [2024-05-12 10:40:30,159 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 206 transitions, 2457 flow [2024-05-12 10:40:30,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:40:30,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:40:30,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:40:30,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-05-12 10:40:30,159 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:40:30,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:40:30,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1939236948, now seen corresponding path program 3 times [2024-05-12 10:40:30,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:40:30,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428601949] [2024-05-12 10:40:30,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:40:30,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:40:30,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:40:35,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:40:35,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:40:35,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428601949] [2024-05-12 10:40:35,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428601949] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:40:35,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:40:35,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 10:40:35,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696491729] [2024-05-12 10:40:35,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:40:35,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 10:40:35,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:40:35,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 10:40:35,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-05-12 10:40:35,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:40:35,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 206 transitions, 2457 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:40:35,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:40:35,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:40:35,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:40:37,147 INFO L124 PetriNetUnfolderBase]: 1078/1891 cut-off events. [2024-05-12 10:40:37,147 INFO L125 PetriNetUnfolderBase]: For 77045/77045 co-relation queries the response was YES. [2024-05-12 10:40:37,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12493 conditions, 1891 events. 1078/1891 cut-off events. For 77045/77045 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 9700 event pairs, 208 based on Foata normal form. 2/1805 useless extension candidates. Maximal degree in co-relation 12377. Up to 1389 conditions per place. [2024-05-12 10:40:37,166 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 163 selfloop transitions, 65 changer transitions 0/235 dead transitions. [2024-05-12 10:40:37,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 235 transitions, 3149 flow [2024-05-12 10:40:37,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:40:37,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:40:37,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-05-12 10:40:37,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4128205128205128 [2024-05-12 10:40:37,168 INFO L175 Difference]: Start difference. First operand has 227 places, 206 transitions, 2457 flow. Second operand 10 states and 161 transitions. [2024-05-12 10:40:37,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 235 transitions, 3149 flow [2024-05-12 10:40:37,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 235 transitions, 2987 flow, removed 52 selfloop flow, removed 5 redundant places. [2024-05-12 10:40:37,425 INFO L231 Difference]: Finished difference. Result has 232 places, 206 transitions, 2431 flow [2024-05-12 10:40:37,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2295, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2431, PETRI_PLACES=232, PETRI_TRANSITIONS=206} [2024-05-12 10:40:37,426 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 189 predicate places. [2024-05-12 10:40:37,426 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 206 transitions, 2431 flow [2024-05-12 10:40:37,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:40:37,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:40:37,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:40:37,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-05-12 10:40:37,426 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:40:37,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:40:37,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1938990994, now seen corresponding path program 4 times [2024-05-12 10:40:37,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:40:37,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670604720] [2024-05-12 10:40:37,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:40:37,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:40:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:40:41,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:40:41,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:40:41,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670604720] [2024-05-12 10:40:41,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670604720] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:40:41,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:40:41,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 10:40:41,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756434831] [2024-05-12 10:40:41,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:40:41,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 10:40:41,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:40:41,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 10:40:41,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 10:40:41,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:40:41,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 206 transitions, 2431 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:40:41,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:40:41,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:40:41,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:40:42,686 INFO L124 PetriNetUnfolderBase]: 1094/1920 cut-off events. [2024-05-12 10:40:42,686 INFO L125 PetriNetUnfolderBase]: For 78626/78626 co-relation queries the response was YES. [2024-05-12 10:40:42,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12764 conditions, 1920 events. 1094/1920 cut-off events. For 78626/78626 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 9918 event pairs, 213 based on Foata normal form. 2/1834 useless extension candidates. Maximal degree in co-relation 12646. Up to 1556 conditions per place. [2024-05-12 10:40:42,704 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 181 selfloop transitions, 45 changer transitions 0/233 dead transitions. [2024-05-12 10:40:42,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 233 transitions, 3057 flow [2024-05-12 10:40:42,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:40:42,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:40:42,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-05-12 10:40:42,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131054131054131 [2024-05-12 10:40:42,706 INFO L175 Difference]: Start difference. First operand has 232 places, 206 transitions, 2431 flow. Second operand 9 states and 145 transitions. [2024-05-12 10:40:42,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 233 transitions, 3057 flow [2024-05-12 10:40:42,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 233 transitions, 2936 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-05-12 10:40:42,971 INFO L231 Difference]: Finished difference. Result has 233 places, 208 transitions, 2487 flow [2024-05-12 10:40:42,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2310, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2487, PETRI_PLACES=233, PETRI_TRANSITIONS=208} [2024-05-12 10:40:42,972 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 190 predicate places. [2024-05-12 10:40:42,972 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 208 transitions, 2487 flow [2024-05-12 10:40:42,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:40:42,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:40:42,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:40:42,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-05-12 10:40:42,972 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:40:42,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:40:42,973 INFO L85 PathProgramCache]: Analyzing trace with hash 814348462, now seen corresponding path program 4 times [2024-05-12 10:40:42,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:40:42,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91433942] [2024-05-12 10:40:42,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:40:42,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:40:43,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:40:50,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:40:50,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:40:50,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91433942] [2024-05-12 10:40:50,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91433942] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:40:50,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:40:50,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 10:40:50,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038208980] [2024-05-12 10:40:50,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:40:50,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 10:40:50,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:40:50,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 10:40:50,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-05-12 10:40:50,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:40:50,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 208 transitions, 2487 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:40:50,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:40:50,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:40:50,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:40:51,311 INFO L124 PetriNetUnfolderBase]: 1105/1937 cut-off events. [2024-05-12 10:40:51,311 INFO L125 PetriNetUnfolderBase]: For 81764/81764 co-relation queries the response was YES. [2024-05-12 10:40:51,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12916 conditions, 1937 events. 1105/1937 cut-off events. For 81764/81764 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 10014 event pairs, 213 based on Foata normal form. 2/1849 useless extension candidates. Maximal degree in co-relation 12797. Up to 1565 conditions per place. [2024-05-12 10:40:51,332 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 182 selfloop transitions, 47 changer transitions 0/236 dead transitions. [2024-05-12 10:40:51,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 236 transitions, 3085 flow [2024-05-12 10:40:51,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:40:51,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:40:51,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-05-12 10:40:51,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-05-12 10:40:51,334 INFO L175 Difference]: Start difference. First operand has 233 places, 208 transitions, 2487 flow. Second operand 10 states and 156 transitions. [2024-05-12 10:40:51,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 236 transitions, 3085 flow [2024-05-12 10:40:51,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 236 transitions, 2924 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-05-12 10:40:51,629 INFO L231 Difference]: Finished difference. Result has 236 places, 210 transitions, 2479 flow [2024-05-12 10:40:51,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2326, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2479, PETRI_PLACES=236, PETRI_TRANSITIONS=210} [2024-05-12 10:40:51,631 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 193 predicate places. [2024-05-12 10:40:51,631 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 210 transitions, 2479 flow [2024-05-12 10:40:51,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:40:51,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:40:51,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:40:51,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-05-12 10:40:51,632 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:40:51,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:40:51,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1119822946, now seen corresponding path program 1 times [2024-05-12 10:40:51,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:40:51,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199747993] [2024-05-12 10:40:51,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:40:51,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:40:51,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:40:57,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:40:57,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:40:57,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199747993] [2024-05-12 10:40:57,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199747993] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:40:57,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:40:57,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 10:40:57,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775687503] [2024-05-12 10:40:57,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:40:57,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 10:40:57,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:40:57,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 10:40:57,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 10:40:58,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:40:58,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 210 transitions, 2479 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:40:58,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:40:58,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:40:58,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:40:59,144 INFO L124 PetriNetUnfolderBase]: 1111/1947 cut-off events. [2024-05-12 10:40:59,144 INFO L125 PetriNetUnfolderBase]: For 80220/80220 co-relation queries the response was YES. [2024-05-12 10:40:59,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12877 conditions, 1947 events. 1111/1947 cut-off events. For 80220/80220 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 10087 event pairs, 261 based on Foata normal form. 1/1857 useless extension candidates. Maximal degree in co-relation 12757. Up to 1701 conditions per place. [2024-05-12 10:40:59,159 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 197 selfloop transitions, 33 changer transitions 0/237 dead transitions. [2024-05-12 10:40:59,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 237 transitions, 3089 flow [2024-05-12 10:40:59,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:40:59,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:40:59,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 150 transitions. [2024-05-12 10:40:59,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2024-05-12 10:40:59,161 INFO L175 Difference]: Start difference. First operand has 236 places, 210 transitions, 2479 flow. Second operand 10 states and 150 transitions. [2024-05-12 10:40:59,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 237 transitions, 3089 flow [2024-05-12 10:40:59,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 237 transitions, 2962 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-05-12 10:40:59,434 INFO L231 Difference]: Finished difference. Result has 238 places, 212 transitions, 2478 flow [2024-05-12 10:40:59,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2352, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2478, PETRI_PLACES=238, PETRI_TRANSITIONS=212} [2024-05-12 10:40:59,435 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 195 predicate places. [2024-05-12 10:40:59,435 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 212 transitions, 2478 flow [2024-05-12 10:40:59,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:40:59,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:40:59,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:40:59,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-05-12 10:40:59,436 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:40:59,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:40:59,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1932561904, now seen corresponding path program 5 times [2024-05-12 10:40:59,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:40:59,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771218740] [2024-05-12 10:40:59,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:40:59,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:40:59,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:03,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:03,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:03,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771218740] [2024-05-12 10:41:03,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771218740] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:03,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:03,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 10:41:03,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646331361] [2024-05-12 10:41:03,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:03,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 10:41:03,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:03,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 10:41:03,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-05-12 10:41:03,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:41:03,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 212 transitions, 2478 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:03,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:03,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:41:03,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:04,628 INFO L124 PetriNetUnfolderBase]: 1127/1974 cut-off events. [2024-05-12 10:41:04,629 INFO L125 PetriNetUnfolderBase]: For 85129/85129 co-relation queries the response was YES. [2024-05-12 10:41:04,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13047 conditions, 1974 events. 1127/1974 cut-off events. For 85129/85129 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 10245 event pairs, 235 based on Foata normal form. 2/1886 useless extension candidates. Maximal degree in co-relation 12926. Up to 1665 conditions per place. [2024-05-12 10:41:04,649 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 194 selfloop transitions, 36 changer transitions 0/237 dead transitions. [2024-05-12 10:41:04,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 237 transitions, 3104 flow [2024-05-12 10:41:04,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:41:04,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:41:04,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-05-12 10:41:04,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-05-12 10:41:04,650 INFO L175 Difference]: Start difference. First operand has 238 places, 212 transitions, 2478 flow. Second operand 9 states and 143 transitions. [2024-05-12 10:41:04,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 237 transitions, 3104 flow [2024-05-12 10:41:04,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 237 transitions, 3012 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-05-12 10:41:04,936 INFO L231 Difference]: Finished difference. Result has 239 places, 214 transitions, 2549 flow [2024-05-12 10:41:04,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2386, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2549, PETRI_PLACES=239, PETRI_TRANSITIONS=214} [2024-05-12 10:41:04,936 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 196 predicate places. [2024-05-12 10:41:04,936 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 214 transitions, 2549 flow [2024-05-12 10:41:04,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:04,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:04,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:04,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-05-12 10:41:04,937 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:04,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:04,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1113327516, now seen corresponding path program 5 times [2024-05-12 10:41:04,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:04,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627149841] [2024-05-12 10:41:04,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:04,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:04,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:10,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:10,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:10,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627149841] [2024-05-12 10:41:10,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627149841] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:10,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:10,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 10:41:10,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367407881] [2024-05-12 10:41:10,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:10,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 10:41:10,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:10,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 10:41:10,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-05-12 10:41:10,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:41:10,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 214 transitions, 2549 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:10,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:10,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:41:10,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:11,749 INFO L124 PetriNetUnfolderBase]: 1131/1980 cut-off events. [2024-05-12 10:41:11,750 INFO L125 PetriNetUnfolderBase]: For 86167/86167 co-relation queries the response was YES. [2024-05-12 10:41:11,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13140 conditions, 1980 events. 1131/1980 cut-off events. For 86167/86167 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 10270 event pairs, 235 based on Foata normal form. 2/1890 useless extension candidates. Maximal degree in co-relation 13018. Up to 1663 conditions per place. [2024-05-12 10:41:11,768 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 195 selfloop transitions, 38 changer transitions 0/240 dead transitions. [2024-05-12 10:41:11,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 240 transitions, 3147 flow [2024-05-12 10:41:11,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:41:11,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:41:11,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-05-12 10:41:11,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39487179487179486 [2024-05-12 10:41:11,769 INFO L175 Difference]: Start difference. First operand has 239 places, 214 transitions, 2549 flow. Second operand 10 states and 154 transitions. [2024-05-12 10:41:11,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 240 transitions, 3147 flow [2024-05-12 10:41:12,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 240 transitions, 3000 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-05-12 10:41:12,089 INFO L231 Difference]: Finished difference. Result has 242 places, 216 transitions, 2541 flow [2024-05-12 10:41:12,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2402, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2541, PETRI_PLACES=242, PETRI_TRANSITIONS=216} [2024-05-12 10:41:12,089 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 199 predicate places. [2024-05-12 10:41:12,089 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 216 transitions, 2541 flow [2024-05-12 10:41:12,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:12,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:12,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:12,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-05-12 10:41:12,090 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:12,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:12,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1113142942, now seen corresponding path program 6 times [2024-05-12 10:41:12,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:12,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620421472] [2024-05-12 10:41:12,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:12,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:16,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:16,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:16,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620421472] [2024-05-12 10:41:16,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620421472] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:16,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:16,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 10:41:16,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290745933] [2024-05-12 10:41:16,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:16,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 10:41:16,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:16,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 10:41:16,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-05-12 10:41:16,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:41:16,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 216 transitions, 2541 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:16,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:16,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:41:16,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:17,313 INFO L124 PetriNetUnfolderBase]: 1147/2009 cut-off events. [2024-05-12 10:41:17,313 INFO L125 PetriNetUnfolderBase]: For 88375/88375 co-relation queries the response was YES. [2024-05-12 10:41:17,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13284 conditions, 2009 events. 1147/2009 cut-off events. For 88375/88375 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 10483 event pairs, 228 based on Foata normal form. 2/1919 useless extension candidates. Maximal degree in co-relation 13161. Up to 1691 conditions per place. [2024-05-12 10:41:17,333 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 201 selfloop transitions, 36 changer transitions 0/244 dead transitions. [2024-05-12 10:41:17,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 244 transitions, 3205 flow [2024-05-12 10:41:17,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:41:17,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:41:17,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-05-12 10:41:17,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41025641025641024 [2024-05-12 10:41:17,334 INFO L175 Difference]: Start difference. First operand has 242 places, 216 transitions, 2541 flow. Second operand 9 states and 144 transitions. [2024-05-12 10:41:17,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 244 transitions, 3205 flow [2024-05-12 10:41:17,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 244 transitions, 3092 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-05-12 10:41:17,663 INFO L231 Difference]: Finished difference. Result has 244 places, 220 transitions, 2618 flow [2024-05-12 10:41:17,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2428, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2618, PETRI_PLACES=244, PETRI_TRANSITIONS=220} [2024-05-12 10:41:17,664 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 201 predicate places. [2024-05-12 10:41:17,664 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 220 transitions, 2618 flow [2024-05-12 10:41:17,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:17,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:17,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:17,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-05-12 10:41:17,664 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:17,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:17,665 INFO L85 PathProgramCache]: Analyzing trace with hash -2105310980, now seen corresponding path program 1 times [2024-05-12 10:41:17,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:17,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502575775] [2024-05-12 10:41:17,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:17,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:17,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:24,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:24,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:24,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502575775] [2024-05-12 10:41:24,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502575775] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:24,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:24,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 10:41:24,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480211581] [2024-05-12 10:41:24,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:24,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 10:41:24,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:24,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 10:41:24,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-05-12 10:41:24,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:41:24,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 220 transitions, 2618 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:24,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:24,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:41:24,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:25,400 INFO L124 PetriNetUnfolderBase]: 1179/2069 cut-off events. [2024-05-12 10:41:25,400 INFO L125 PetriNetUnfolderBase]: For 99246/99249 co-relation queries the response was YES. [2024-05-12 10:41:25,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13812 conditions, 2069 events. 1179/2069 cut-off events. For 99246/99249 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 10957 event pairs, 277 based on Foata normal form. 6/1980 useless extension candidates. Maximal degree in co-relation 13687. Up to 1791 conditions per place. [2024-05-12 10:41:25,418 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 220 selfloop transitions, 28 changer transitions 0/255 dead transitions. [2024-05-12 10:41:25,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 255 transitions, 3356 flow [2024-05-12 10:41:25,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 10:41:25,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 10:41:25,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 165 transitions. [2024-05-12 10:41:25,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2024-05-12 10:41:25,420 INFO L175 Difference]: Start difference. First operand has 244 places, 220 transitions, 2618 flow. Second operand 11 states and 165 transitions. [2024-05-12 10:41:25,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 255 transitions, 3356 flow [2024-05-12 10:41:25,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 255 transitions, 3198 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-05-12 10:41:25,706 INFO L231 Difference]: Finished difference. Result has 249 places, 222 transitions, 2617 flow [2024-05-12 10:41:25,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2460, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2617, PETRI_PLACES=249, PETRI_TRANSITIONS=222} [2024-05-12 10:41:25,707 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 206 predicate places. [2024-05-12 10:41:25,707 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 222 transitions, 2617 flow [2024-05-12 10:41:25,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:25,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:25,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:25,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-05-12 10:41:25,707 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:25,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:25,708 INFO L85 PathProgramCache]: Analyzing trace with hash 59825018, now seen corresponding path program 7 times [2024-05-12 10:41:25,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:25,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421354296] [2024-05-12 10:41:25,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:25,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:25,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:30,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:30,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:30,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421354296] [2024-05-12 10:41:30,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421354296] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:30,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:30,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 10:41:30,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034493610] [2024-05-12 10:41:30,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:30,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 10:41:30,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:30,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 10:41:30,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 10:41:30,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:41:30,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 222 transitions, 2617 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:30,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:30,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:41:30,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:31,450 INFO L124 PetriNetUnfolderBase]: 1195/2097 cut-off events. [2024-05-12 10:41:31,450 INFO L125 PetriNetUnfolderBase]: For 97232/97235 co-relation queries the response was YES. [2024-05-12 10:41:31,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13949 conditions, 2097 events. 1195/2097 cut-off events. For 97232/97235 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 11072 event pairs, 215 based on Foata normal form. 2/1999 useless extension candidates. Maximal degree in co-relation 13823. Up to 1655 conditions per place. [2024-05-12 10:41:31,470 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 185 selfloop transitions, 56 changer transitions 0/248 dead transitions. [2024-05-12 10:41:31,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 248 transitions, 3291 flow [2024-05-12 10:41:31,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:41:31,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:41:31,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-05-12 10:41:31,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41025641025641024 [2024-05-12 10:41:31,472 INFO L175 Difference]: Start difference. First operand has 249 places, 222 transitions, 2617 flow. Second operand 9 states and 144 transitions. [2024-05-12 10:41:31,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 248 transitions, 3291 flow [2024-05-12 10:41:31,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 248 transitions, 3150 flow, removed 44 selfloop flow, removed 9 redundant places. [2024-05-12 10:41:31,807 INFO L231 Difference]: Finished difference. Result has 249 places, 224 transitions, 2689 flow [2024-05-12 10:41:31,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2476, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2689, PETRI_PLACES=249, PETRI_TRANSITIONS=224} [2024-05-12 10:41:31,807 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 206 predicate places. [2024-05-12 10:41:31,808 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 224 transitions, 2689 flow [2024-05-12 10:41:31,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:31,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:31,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:31,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-05-12 10:41:31,808 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:31,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:31,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1939484834, now seen corresponding path program 6 times [2024-05-12 10:41:31,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:31,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859860394] [2024-05-12 10:41:31,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:31,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:31,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:37,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:37,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:37,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859860394] [2024-05-12 10:41:37,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859860394] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:37,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:37,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 10:41:37,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760928132] [2024-05-12 10:41:37,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:37,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 10:41:37,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:37,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 10:41:37,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-05-12 10:41:37,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:41:37,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 224 transitions, 2689 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:37,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:37,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:41:37,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:38,868 INFO L124 PetriNetUnfolderBase]: 1221/2137 cut-off events. [2024-05-12 10:41:38,868 INFO L125 PetriNetUnfolderBase]: For 104271/104274 co-relation queries the response was YES. [2024-05-12 10:41:38,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14398 conditions, 2137 events. 1221/2137 cut-off events. For 104271/104274 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 11334 event pairs, 215 based on Foata normal form. 2/2036 useless extension candidates. Maximal degree in co-relation 14271. Up to 1632 conditions per place. [2024-05-12 10:41:38,890 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 186 selfloop transitions, 64 changer transitions 0/257 dead transitions. [2024-05-12 10:41:38,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 257 transitions, 3569 flow [2024-05-12 10:41:38,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:41:38,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:41:38,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-05-12 10:41:38,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153846153846154 [2024-05-12 10:41:38,892 INFO L175 Difference]: Start difference. First operand has 249 places, 224 transitions, 2689 flow. Second operand 10 states and 162 transitions. [2024-05-12 10:41:38,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 257 transitions, 3569 flow [2024-05-12 10:41:39,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 257 transitions, 3372 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-05-12 10:41:39,305 INFO L231 Difference]: Finished difference. Result has 252 places, 228 transitions, 2749 flow [2024-05-12 10:41:39,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2492, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2749, PETRI_PLACES=252, PETRI_TRANSITIONS=228} [2024-05-12 10:41:39,306 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 209 predicate places. [2024-05-12 10:41:39,306 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 228 transitions, 2749 flow [2024-05-12 10:41:39,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:39,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:39,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:39,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-05-12 10:41:39,307 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:39,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:39,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1042552960, now seen corresponding path program 7 times [2024-05-12 10:41:39,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:39,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078264549] [2024-05-12 10:41:39,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:39,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:39,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:44,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:44,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:44,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078264549] [2024-05-12 10:41:44,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078264549] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:44,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:44,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 10:41:44,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541766341] [2024-05-12 10:41:44,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:44,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 10:41:44,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:44,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 10:41:44,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 10:41:45,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:41:45,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 228 transitions, 2749 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:45,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:45,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:41:45,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:46,204 INFO L124 PetriNetUnfolderBase]: 1269/2211 cut-off events. [2024-05-12 10:41:46,204 INFO L125 PetriNetUnfolderBase]: For 111981/111984 co-relation queries the response was YES. [2024-05-12 10:41:46,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14978 conditions, 2211 events. 1269/2211 cut-off events. For 111981/111984 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 11795 event pairs, 264 based on Foata normal form. 2/2106 useless extension candidates. Maximal degree in co-relation 14850. Up to 1827 conditions per place. [2024-05-12 10:41:46,227 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 210 selfloop transitions, 46 changer transitions 0/263 dead transitions. [2024-05-12 10:41:46,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 263 transitions, 3667 flow [2024-05-12 10:41:46,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:41:46,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:41:46,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-05-12 10:41:46,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40512820512820513 [2024-05-12 10:41:46,229 INFO L175 Difference]: Start difference. First operand has 252 places, 228 transitions, 2749 flow. Second operand 10 states and 158 transitions. [2024-05-12 10:41:46,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 263 transitions, 3667 flow [2024-05-12 10:41:46,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 263 transitions, 3518 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-05-12 10:41:46,620 INFO L231 Difference]: Finished difference. Result has 257 places, 236 transitions, 2872 flow [2024-05-12 10:41:46,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2600, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2872, PETRI_PLACES=257, PETRI_TRANSITIONS=236} [2024-05-12 10:41:46,620 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 214 predicate places. [2024-05-12 10:41:46,621 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 236 transitions, 2872 flow [2024-05-12 10:41:46,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:46,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:46,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:46,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-05-12 10:41:46,621 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:46,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:46,621 INFO L85 PathProgramCache]: Analyzing trace with hash 571179154, now seen corresponding path program 8 times [2024-05-12 10:41:46,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:46,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088718806] [2024-05-12 10:41:46,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:46,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:46,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:41:52,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:41:52,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:41:52,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088718806] [2024-05-12 10:41:52,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088718806] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:41:52,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:41:52,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 10:41:52,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806623596] [2024-05-12 10:41:52,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:41:52,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 10:41:52,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:41:52,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 10:41:52,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 10:41:52,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:41:52,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 236 transitions, 2872 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:52,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:41:52,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:41:52,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:41:53,831 INFO L124 PetriNetUnfolderBase]: 1280/2228 cut-off events. [2024-05-12 10:41:53,831 INFO L125 PetriNetUnfolderBase]: For 114382/114385 co-relation queries the response was YES. [2024-05-12 10:41:53,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15230 conditions, 2228 events. 1280/2228 cut-off events. For 114382/114385 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 11875 event pairs, 264 based on Foata normal form. 2/2122 useless extension candidates. Maximal degree in co-relation 15099. Up to 1837 conditions per place. [2024-05-12 10:41:53,855 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 210 selfloop transitions, 47 changer transitions 0/264 dead transitions. [2024-05-12 10:41:53,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 264 transitions, 3698 flow [2024-05-12 10:41:53,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:41:53,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:41:53,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-05-12 10:41:53,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40512820512820513 [2024-05-12 10:41:53,856 INFO L175 Difference]: Start difference. First operand has 257 places, 236 transitions, 2872 flow. Second operand 10 states and 158 transitions. [2024-05-12 10:41:53,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 264 transitions, 3698 flow [2024-05-12 10:41:54,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 264 transitions, 3555 flow, removed 48 selfloop flow, removed 5 redundant places. [2024-05-12 10:41:54,351 INFO L231 Difference]: Finished difference. Result has 262 places, 238 transitions, 2896 flow [2024-05-12 10:41:54,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2749, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2896, PETRI_PLACES=262, PETRI_TRANSITIONS=238} [2024-05-12 10:41:54,351 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 219 predicate places. [2024-05-12 10:41:54,352 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 238 transitions, 2896 flow [2024-05-12 10:41:54,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:41:54,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:41:54,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:41:54,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-05-12 10:41:54,352 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:41:54,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:41:54,353 INFO L85 PathProgramCache]: Analyzing trace with hash 579530306, now seen corresponding path program 2 times [2024-05-12 10:41:54,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:41:54,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270462030] [2024-05-12 10:41:54,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:41:54,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:41:54,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:42:00,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:42:00,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:42:00,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270462030] [2024-05-12 10:42:00,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270462030] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:42:00,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:42:00,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 10:42:00,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256730165] [2024-05-12 10:42:00,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:42:00,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 10:42:00,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:42:00,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 10:42:00,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-05-12 10:42:00,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:42:00,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 238 transitions, 2896 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:00,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:42:00,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:42:00,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:42:01,980 INFO L124 PetriNetUnfolderBase]: 1312/2287 cut-off events. [2024-05-12 10:42:01,980 INFO L125 PetriNetUnfolderBase]: For 124319/124322 co-relation queries the response was YES. [2024-05-12 10:42:01,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15704 conditions, 2287 events. 1312/2287 cut-off events. For 124319/124322 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 12286 event pairs, 311 based on Foata normal form. 6/2186 useless extension candidates. Maximal degree in co-relation 15571. Up to 2006 conditions per place. [2024-05-12 10:42:02,006 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 234 selfloop transitions, 28 changer transitions 0/269 dead transitions. [2024-05-12 10:42:02,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 269 transitions, 3650 flow [2024-05-12 10:42:02,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 10:42:02,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 10:42:02,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 163 transitions. [2024-05-12 10:42:02,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37995337995337997 [2024-05-12 10:42:02,007 INFO L175 Difference]: Start difference. First operand has 262 places, 238 transitions, 2896 flow. Second operand 11 states and 163 transitions. [2024-05-12 10:42:02,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 269 transitions, 3650 flow [2024-05-12 10:42:02,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 269 transitions, 3537 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-05-12 10:42:02,425 INFO L231 Difference]: Finished difference. Result has 267 places, 240 transitions, 2946 flow [2024-05-12 10:42:02,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2783, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2946, PETRI_PLACES=267, PETRI_TRANSITIONS=240} [2024-05-12 10:42:02,426 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 224 predicate places. [2024-05-12 10:42:02,426 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 240 transitions, 2946 flow [2024-05-12 10:42:02,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:02,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:42:02,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:42:02,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-05-12 10:42:02,426 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:42:02,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:42:02,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1042798914, now seen corresponding path program 8 times [2024-05-12 10:42:02,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:42:02,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330048512] [2024-05-12 10:42:02,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:42:02,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:42:02,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:42:06,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:42:06,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:42:06,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330048512] [2024-05-12 10:42:06,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330048512] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:42:06,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:42:06,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 10:42:06,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959638878] [2024-05-12 10:42:06,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:42:06,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 10:42:06,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:42:06,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 10:42:06,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-05-12 10:42:07,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:42:07,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 240 transitions, 2946 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:07,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:42:07,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:42:07,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:42:08,205 INFO L124 PetriNetUnfolderBase]: 1328/2315 cut-off events. [2024-05-12 10:42:08,205 INFO L125 PetriNetUnfolderBase]: For 123908/123911 co-relation queries the response was YES. [2024-05-12 10:42:08,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15960 conditions, 2315 events. 1328/2315 cut-off events. For 123908/123911 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 12506 event pairs, 292 based on Foata normal form. 2/2207 useless extension candidates. Maximal degree in co-relation 15826. Up to 1991 conditions per place. [2024-05-12 10:42:08,233 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 219 selfloop transitions, 38 changer transitions 0/264 dead transitions. [2024-05-12 10:42:08,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 264 transitions, 3646 flow [2024-05-12 10:42:08,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:42:08,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:42:08,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-05-12 10:42:08,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39886039886039887 [2024-05-12 10:42:08,234 INFO L175 Difference]: Start difference. First operand has 267 places, 240 transitions, 2946 flow. Second operand 9 states and 140 transitions. [2024-05-12 10:42:08,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 264 transitions, 3646 flow [2024-05-12 10:42:08,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 264 transitions, 3499 flow, removed 47 selfloop flow, removed 9 redundant places. [2024-05-12 10:42:08,749 INFO L231 Difference]: Finished difference. Result has 267 places, 242 transitions, 2982 flow [2024-05-12 10:42:08,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2799, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2982, PETRI_PLACES=267, PETRI_TRANSITIONS=242} [2024-05-12 10:42:08,750 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 224 predicate places. [2024-05-12 10:42:08,750 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 242 transitions, 2982 flow [2024-05-12 10:42:08,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:08,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:42:08,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:42:08,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-05-12 10:42:08,751 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:42:08,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:42:08,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1939493204, now seen corresponding path program 9 times [2024-05-12 10:42:08,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:42:08,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345214490] [2024-05-12 10:42:08,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:42:08,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:42:08,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:42:14,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:42:14,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:42:14,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345214490] [2024-05-12 10:42:14,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345214490] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:42:14,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:42:14,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 10:42:14,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166894164] [2024-05-12 10:42:14,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:42:14,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 10:42:14,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:42:14,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 10:42:14,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-05-12 10:42:14,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:42:14,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 242 transitions, 2982 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:14,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:42:14,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:42:14,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:42:15,753 INFO L124 PetriNetUnfolderBase]: 1339/2332 cut-off events. [2024-05-12 10:42:15,753 INFO L125 PetriNetUnfolderBase]: For 124138/124141 co-relation queries the response was YES. [2024-05-12 10:42:15,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15924 conditions, 2332 events. 1339/2332 cut-off events. For 124138/124141 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 12602 event pairs, 227 based on Foata normal form. 2/2222 useless extension candidates. Maximal degree in co-relation 15789. Up to 1817 conditions per place. [2024-05-12 10:42:15,780 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 200 selfloop transitions, 65 changer transitions 0/272 dead transitions. [2024-05-12 10:42:15,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 272 transitions, 3822 flow [2024-05-12 10:42:15,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:42:15,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:42:15,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-05-12 10:42:15,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153846153846154 [2024-05-12 10:42:15,781 INFO L175 Difference]: Start difference. First operand has 267 places, 242 transitions, 2982 flow. Second operand 10 states and 162 transitions. [2024-05-12 10:42:15,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 272 transitions, 3822 flow [2024-05-12 10:42:16,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 272 transitions, 3655 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-05-12 10:42:16,233 INFO L231 Difference]: Finished difference. Result has 270 places, 244 transitions, 2998 flow [2024-05-12 10:42:16,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2815, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2998, PETRI_PLACES=270, PETRI_TRANSITIONS=244} [2024-05-12 10:42:16,234 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 227 predicate places. [2024-05-12 10:42:16,234 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 244 transitions, 2998 flow [2024-05-12 10:42:16,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:16,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:42:16,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:42:16,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-05-12 10:42:16,234 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:42:16,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:42:16,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1042791970, now seen corresponding path program 10 times [2024-05-12 10:42:16,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:42:16,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509121101] [2024-05-12 10:42:16,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:42:16,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:42:16,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:42:21,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:42:21,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:42:21,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509121101] [2024-05-12 10:42:21,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509121101] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:42:21,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:42:21,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 10:42:21,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288767936] [2024-05-12 10:42:21,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:42:21,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 10:42:21,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:42:21,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 10:42:21,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 10:42:22,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:42:22,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 244 transitions, 2998 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:22,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:42:22,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:42:22,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:42:23,168 INFO L124 PetriNetUnfolderBase]: 1335/2326 cut-off events. [2024-05-12 10:42:23,168 INFO L125 PetriNetUnfolderBase]: For 118240/118243 co-relation queries the response was YES. [2024-05-12 10:42:23,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15640 conditions, 2326 events. 1335/2326 cut-off events. For 118240/118243 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 12555 event pairs, 294 based on Foata normal form. 2/2216 useless extension candidates. Maximal degree in co-relation 15504. Up to 1994 conditions per place. [2024-05-12 10:42:23,191 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 220 selfloop transitions, 40 changer transitions 0/267 dead transitions. [2024-05-12 10:42:23,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 267 transitions, 3598 flow [2024-05-12 10:42:23,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:42:23,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:42:23,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 151 transitions. [2024-05-12 10:42:23,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3871794871794872 [2024-05-12 10:42:23,192 INFO L175 Difference]: Start difference. First operand has 270 places, 244 transitions, 2998 flow. Second operand 10 states and 151 transitions. [2024-05-12 10:42:23,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 267 transitions, 3598 flow [2024-05-12 10:42:23,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 267 transitions, 3411 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-05-12 10:42:23,643 INFO L231 Difference]: Finished difference. Result has 273 places, 244 transitions, 2896 flow [2024-05-12 10:42:23,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2811, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2896, PETRI_PLACES=273, PETRI_TRANSITIONS=244} [2024-05-12 10:42:23,643 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 230 predicate places. [2024-05-12 10:42:23,643 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 244 transitions, 2896 flow [2024-05-12 10:42:23,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:23,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:42:23,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:42:23,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-05-12 10:42:23,644 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:42:23,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:42:23,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1264206370, now seen corresponding path program 11 times [2024-05-12 10:42:23,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:42:23,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629537596] [2024-05-12 10:42:23,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:42:23,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:42:23,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:42:31,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:42:31,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:42:31,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629537596] [2024-05-12 10:42:31,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629537596] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:42:31,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:42:31,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 10:42:31,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108557514] [2024-05-12 10:42:31,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:42:31,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 10:42:31,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:42:31,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 10:42:31,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-05-12 10:42:31,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:42:31,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 244 transitions, 2896 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:31,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:42:31,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:42:31,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:42:32,280 INFO L124 PetriNetUnfolderBase]: 1346/2343 cut-off events. [2024-05-12 10:42:32,280 INFO L125 PetriNetUnfolderBase]: For 120774/120777 co-relation queries the response was YES. [2024-05-12 10:42:32,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15603 conditions, 2343 events. 1346/2343 cut-off events. For 120774/120777 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 12673 event pairs, 282 based on Foata normal form. 2/2232 useless extension candidates. Maximal degree in co-relation 15466. Up to 1906 conditions per place. [2024-05-12 10:42:32,304 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 208 selfloop transitions, 57 changer transitions 0/272 dead transitions. [2024-05-12 10:42:32,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 272 transitions, 3590 flow [2024-05-12 10:42:32,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:42:32,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:42:32,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-05-12 10:42:32,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40512820512820513 [2024-05-12 10:42:32,306 INFO L175 Difference]: Start difference. First operand has 273 places, 244 transitions, 2896 flow. Second operand 10 states and 158 transitions. [2024-05-12 10:42:32,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 272 transitions, 3590 flow [2024-05-12 10:42:32,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 272 transitions, 3495 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-05-12 10:42:32,771 INFO L231 Difference]: Finished difference. Result has 274 places, 246 transitions, 2995 flow [2024-05-12 10:42:32,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2801, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2995, PETRI_PLACES=274, PETRI_TRANSITIONS=246} [2024-05-12 10:42:32,772 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 231 predicate places. [2024-05-12 10:42:32,772 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 246 transitions, 2995 flow [2024-05-12 10:42:32,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:32,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:42:32,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:42:32,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-05-12 10:42:32,773 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:42:32,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:42:32,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1939723844, now seen corresponding path program 12 times [2024-05-12 10:42:32,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:42:32,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137169176] [2024-05-12 10:42:32,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:42:32,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:42:32,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:42:38,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:42:38,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:42:38,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137169176] [2024-05-12 10:42:38,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137169176] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:42:38,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:42:38,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 10:42:38,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881348308] [2024-05-12 10:42:38,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:42:38,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 10:42:38,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:42:38,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 10:42:38,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-05-12 10:42:38,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:42:38,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 246 transitions, 2995 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:38,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:42:38,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:42:38,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:42:39,983 INFO L124 PetriNetUnfolderBase]: 1342/2337 cut-off events. [2024-05-12 10:42:39,983 INFO L125 PetriNetUnfolderBase]: For 116633/116636 co-relation queries the response was YES. [2024-05-12 10:42:40,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15534 conditions, 2337 events. 1342/2337 cut-off events. For 116633/116636 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 12622 event pairs, 229 based on Foata normal form. 2/2226 useless extension candidates. Maximal degree in co-relation 15396. Up to 1884 conditions per place. [2024-05-12 10:42:40,010 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 206 selfloop transitions, 58 changer transitions 0/271 dead transitions. [2024-05-12 10:42:40,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 271 transitions, 3615 flow [2024-05-12 10:42:40,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:42:40,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:42:40,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-05-12 10:42:40,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3974358974358974 [2024-05-12 10:42:40,012 INFO L175 Difference]: Start difference. First operand has 274 places, 246 transitions, 2995 flow. Second operand 10 states and 155 transitions. [2024-05-12 10:42:40,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 271 transitions, 3615 flow [2024-05-12 10:42:40,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 271 transitions, 3412 flow, removed 46 selfloop flow, removed 9 redundant places. [2024-05-12 10:42:40,491 INFO L231 Difference]: Finished difference. Result has 275 places, 246 transitions, 2913 flow [2024-05-12 10:42:40,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2792, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2913, PETRI_PLACES=275, PETRI_TRANSITIONS=246} [2024-05-12 10:42:40,492 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 232 predicate places. [2024-05-12 10:42:40,492 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 246 transitions, 2913 flow [2024-05-12 10:42:40,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:40,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:42:40,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:42:40,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-05-12 10:42:40,493 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:42:40,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:42:40,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1264443954, now seen corresponding path program 9 times [2024-05-12 10:42:40,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:42:40,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516124874] [2024-05-12 10:42:40,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:42:40,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:42:40,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:42:44,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:42:44,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:42:44,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516124874] [2024-05-12 10:42:44,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516124874] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:42:44,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:42:44,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 10:42:44,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553890597] [2024-05-12 10:42:44,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:42:44,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 10:42:44,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:42:44,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 10:42:44,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-05-12 10:42:44,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:42:44,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 246 transitions, 2913 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:44,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:42:44,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:42:44,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:42:45,974 INFO L124 PetriNetUnfolderBase]: 1358/2366 cut-off events. [2024-05-12 10:42:45,974 INFO L125 PetriNetUnfolderBase]: For 118036/118039 co-relation queries the response was YES. [2024-05-12 10:42:45,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15677 conditions, 2366 events. 1358/2366 cut-off events. For 118036/118039 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 12837 event pairs, 295 based on Foata normal form. 2/2256 useless extension candidates. Maximal degree in co-relation 15539. Up to 1995 conditions per place. [2024-05-12 10:42:46,002 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 220 selfloop transitions, 45 changer transitions 0/272 dead transitions. [2024-05-12 10:42:46,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 272 transitions, 3641 flow [2024-05-12 10:42:46,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:42:46,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:42:46,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-05-12 10:42:46,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131054131054131 [2024-05-12 10:42:46,004 INFO L175 Difference]: Start difference. First operand has 275 places, 246 transitions, 2913 flow. Second operand 9 states and 145 transitions. [2024-05-12 10:42:46,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 272 transitions, 3641 flow [2024-05-12 10:42:46,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 272 transitions, 3509 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-05-12 10:42:46,481 INFO L231 Difference]: Finished difference. Result has 274 places, 248 transitions, 2985 flow [2024-05-12 10:42:46,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2781, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2985, PETRI_PLACES=274, PETRI_TRANSITIONS=248} [2024-05-12 10:42:46,482 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 231 predicate places. [2024-05-12 10:42:46,482 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 248 transitions, 2985 flow [2024-05-12 10:42:46,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:46,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:42:46,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:42:46,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-05-12 10:42:46,482 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:42:46,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:42:46,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1264198000, now seen corresponding path program 13 times [2024-05-12 10:42:46,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:42:46,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579434889] [2024-05-12 10:42:46,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:42:46,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:42:46,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:42:52,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:42:52,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:42:52,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579434889] [2024-05-12 10:42:52,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579434889] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:42:52,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:42:52,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 10:42:52,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383736769] [2024-05-12 10:42:52,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:42:52,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 10:42:52,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:42:52,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 10:42:52,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 10:42:52,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:42:52,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 248 transitions, 2985 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:52,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:42:52,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:42:52,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:42:54,228 INFO L124 PetriNetUnfolderBase]: 1384/2406 cut-off events. [2024-05-12 10:42:54,228 INFO L125 PetriNetUnfolderBase]: For 130569/130572 co-relation queries the response was YES. [2024-05-12 10:42:54,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16312 conditions, 2406 events. 1384/2406 cut-off events. For 130569/130572 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 13115 event pairs, 280 based on Foata normal form. 2/2292 useless extension candidates. Maximal degree in co-relation 16173. Up to 1895 conditions per place. [2024-05-12 10:42:54,258 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 206 selfloop transitions, 67 changer transitions 0/280 dead transitions. [2024-05-12 10:42:54,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 280 transitions, 3945 flow [2024-05-12 10:42:54,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:42:54,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:42:54,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-05-12 10:42:54,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4128205128205128 [2024-05-12 10:42:54,260 INFO L175 Difference]: Start difference. First operand has 274 places, 248 transitions, 2985 flow. Second operand 10 states and 161 transitions. [2024-05-12 10:42:54,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 280 transitions, 3945 flow [2024-05-12 10:42:54,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 280 transitions, 3759 flow, removed 51 selfloop flow, removed 7 redundant places. [2024-05-12 10:42:54,815 INFO L231 Difference]: Finished difference. Result has 277 places, 252 transitions, 3091 flow [2024-05-12 10:42:54,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2801, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3091, PETRI_PLACES=277, PETRI_TRANSITIONS=252} [2024-05-12 10:42:54,815 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 234 predicate places. [2024-05-12 10:42:54,815 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 252 transitions, 3091 flow [2024-05-12 10:42:54,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:42:54,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:42:54,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:42:54,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-05-12 10:42:54,816 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:42:54,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:42:54,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1264197690, now seen corresponding path program 2 times [2024-05-12 10:42:54,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:42:54,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441681144] [2024-05-12 10:42:54,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:42:54,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:42:54,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:01,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:01,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:01,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441681144] [2024-05-12 10:43:01,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441681144] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:01,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:01,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 10:43:01,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796692369] [2024-05-12 10:43:01,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:01,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 10:43:01,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:01,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 10:43:01,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-05-12 10:43:01,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:43:01,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 252 transitions, 3091 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:01,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:01,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:43:01,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:02,953 INFO L124 PetriNetUnfolderBase]: 1382/2403 cut-off events. [2024-05-12 10:43:02,953 INFO L125 PetriNetUnfolderBase]: For 120857/120860 co-relation queries the response was YES. [2024-05-12 10:43:02,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16075 conditions, 2403 events. 1382/2403 cut-off events. For 120857/120860 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 13112 event pairs, 331 based on Foata normal form. 3/2291 useless extension candidates. Maximal degree in co-relation 15935. Up to 2149 conditions per place. [2024-05-12 10:43:02,981 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 234 selfloop transitions, 31 changer transitions 0/272 dead transitions. [2024-05-12 10:43:02,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 272 transitions, 3703 flow [2024-05-12 10:43:02,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:43:02,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:43:02,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-05-12 10:43:02,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38746438746438744 [2024-05-12 10:43:02,982 INFO L175 Difference]: Start difference. First operand has 277 places, 252 transitions, 3091 flow. Second operand 9 states and 136 transitions. [2024-05-12 10:43:02,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 272 transitions, 3703 flow [2024-05-12 10:43:03,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 272 transitions, 3539 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-05-12 10:43:03,529 INFO L231 Difference]: Finished difference. Result has 279 places, 252 transitions, 2999 flow [2024-05-12 10:43:03,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2927, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2999, PETRI_PLACES=279, PETRI_TRANSITIONS=252} [2024-05-12 10:43:03,529 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 236 predicate places. [2024-05-12 10:43:03,529 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 252 transitions, 2999 flow [2024-05-12 10:43:03,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:03,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:03,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:03,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-05-12 10:43:03,530 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:43:03,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:03,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1270873044, now seen corresponding path program 10 times [2024-05-12 10:43:03,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:03,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242890864] [2024-05-12 10:43:03,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:03,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:03,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:08,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:08,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:08,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242890864] [2024-05-12 10:43:08,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242890864] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:08,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:08,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 10:43:08,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700240114] [2024-05-12 10:43:08,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:08,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 10:43:08,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:08,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 10:43:08,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-05-12 10:43:08,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:43:08,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 252 transitions, 2999 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:08,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:08,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:43:08,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:09,199 INFO L124 PetriNetUnfolderBase]: 1398/2431 cut-off events. [2024-05-12 10:43:09,199 INFO L125 PetriNetUnfolderBase]: For 124114/124117 co-relation queries the response was YES. [2024-05-12 10:43:09,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16213 conditions, 2431 events. 1398/2431 cut-off events. For 124114/124117 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 13241 event pairs, 312 based on Foata normal form. 2/2318 useless extension candidates. Maximal degree in co-relation 16072. Up to 2113 conditions per place. [2024-05-12 10:43:09,222 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 233 selfloop transitions, 36 changer transitions 0/276 dead transitions. [2024-05-12 10:43:09,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 276 transitions, 3723 flow [2024-05-12 10:43:09,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:43:09,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:43:09,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-05-12 10:43:09,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017094017094017 [2024-05-12 10:43:09,229 INFO L175 Difference]: Start difference. First operand has 279 places, 252 transitions, 2999 flow. Second operand 9 states and 141 transitions. [2024-05-12 10:43:09,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 276 transitions, 3723 flow [2024-05-12 10:43:09,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 276 transitions, 3610 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-05-12 10:43:09,771 INFO L231 Difference]: Finished difference. Result has 280 places, 254 transitions, 3069 flow [2024-05-12 10:43:09,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2886, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3069, PETRI_PLACES=280, PETRI_TRANSITIONS=254} [2024-05-12 10:43:09,771 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 237 predicate places. [2024-05-12 10:43:09,771 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 254 transitions, 3069 flow [2024-05-12 10:43:09,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:09,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:09,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:09,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-05-12 10:43:09,772 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:43:09,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:09,772 INFO L85 PathProgramCache]: Analyzing trace with hash -357351574, now seen corresponding path program 14 times [2024-05-12 10:43:09,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:09,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154492204] [2024-05-12 10:43:09,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:09,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:09,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:15,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:15,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:15,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154492204] [2024-05-12 10:43:15,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154492204] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:15,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:15,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 10:43:15,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806334164] [2024-05-12 10:43:15,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:15,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 10:43:15,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:15,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 10:43:15,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-05-12 10:43:15,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:43:15,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 254 transitions, 3069 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:15,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:15,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:43:15,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:16,491 INFO L124 PetriNetUnfolderBase]: 1409/2448 cut-off events. [2024-05-12 10:43:16,491 INFO L125 PetriNetUnfolderBase]: For 127858/127861 co-relation queries the response was YES. [2024-05-12 10:43:16,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16436 conditions, 2448 events. 1409/2448 cut-off events. For 127858/127861 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 13376 event pairs, 316 based on Foata normal form. 2/2333 useless extension candidates. Maximal degree in co-relation 16294. Up to 2122 conditions per place. [2024-05-12 10:43:16,516 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 234 selfloop transitions, 38 changer transitions 0/279 dead transitions. [2024-05-12 10:43:16,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 279 transitions, 3745 flow [2024-05-12 10:43:16,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:43:16,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:43:16,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 152 transitions. [2024-05-12 10:43:16,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38974358974358975 [2024-05-12 10:43:16,517 INFO L175 Difference]: Start difference. First operand has 280 places, 254 transitions, 3069 flow. Second operand 10 states and 152 transitions. [2024-05-12 10:43:16,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 279 transitions, 3745 flow [2024-05-12 10:43:17,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 279 transitions, 3578 flow, removed 49 selfloop flow, removed 7 redundant places. [2024-05-12 10:43:17,095 INFO L231 Difference]: Finished difference. Result has 283 places, 256 transitions, 3043 flow [2024-05-12 10:43:17,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2902, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3043, PETRI_PLACES=283, PETRI_TRANSITIONS=256} [2024-05-12 10:43:17,096 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 240 predicate places. [2024-05-12 10:43:17,096 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 256 transitions, 3043 flow [2024-05-12 10:43:17,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:17,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:17,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:17,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-05-12 10:43:17,097 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:43:17,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:17,097 INFO L85 PathProgramCache]: Analyzing trace with hash -351095464, now seen corresponding path program 15 times [2024-05-12 10:43:17,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:17,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061995802] [2024-05-12 10:43:17,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:17,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:17,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:22,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:22,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:22,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061995802] [2024-05-12 10:43:22,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061995802] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:22,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:22,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 10:43:22,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491818100] [2024-05-12 10:43:22,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:22,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 10:43:22,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:22,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 10:43:22,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-05-12 10:43:22,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:43:22,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 256 transitions, 3043 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:22,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:22,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:43:22,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:24,061 INFO L124 PetriNetUnfolderBase]: 1405/2442 cut-off events. [2024-05-12 10:43:24,061 INFO L125 PetriNetUnfolderBase]: For 120522/120525 co-relation queries the response was YES. [2024-05-12 10:43:24,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16008 conditions, 2442 events. 1405/2442 cut-off events. For 120522/120525 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 13305 event pairs, 300 based on Foata normal form. 2/2327 useless extension candidates. Maximal degree in co-relation 15865. Up to 2055 conditions per place. [2024-05-12 10:43:24,087 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 225 selfloop transitions, 49 changer transitions 0/281 dead transitions. [2024-05-12 10:43:24,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 281 transitions, 3679 flow [2024-05-12 10:43:24,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:43:24,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:43:24,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-05-12 10:43:24,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-05-12 10:43:24,088 INFO L175 Difference]: Start difference. First operand has 283 places, 256 transitions, 3043 flow. Second operand 10 states and 156 transitions. [2024-05-12 10:43:24,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 281 transitions, 3679 flow [2024-05-12 10:43:24,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 281 transitions, 3530 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-05-12 10:43:24,622 INFO L231 Difference]: Finished difference. Result has 285 places, 256 transitions, 3000 flow [2024-05-12 10:43:24,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2894, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3000, PETRI_PLACES=285, PETRI_TRANSITIONS=256} [2024-05-12 10:43:24,622 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 242 predicate places. [2024-05-12 10:43:24,622 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 256 transitions, 3000 flow [2024-05-12 10:43:24,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:24,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:24,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:24,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-05-12 10:43:24,624 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:43:24,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:24,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1270877694, now seen corresponding path program 11 times [2024-05-12 10:43:24,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:24,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278475900] [2024-05-12 10:43:24,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:24,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:28,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:28,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:28,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278475900] [2024-05-12 10:43:28,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278475900] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:28,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:28,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 10:43:28,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075251825] [2024-05-12 10:43:28,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:28,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 10:43:28,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:28,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 10:43:28,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-05-12 10:43:28,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:43:28,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 256 transitions, 3000 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:28,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:28,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:43:28,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:29,949 INFO L124 PetriNetUnfolderBase]: 1405/2442 cut-off events. [2024-05-12 10:43:29,950 INFO L125 PetriNetUnfolderBase]: For 115808/115811 co-relation queries the response was YES. [2024-05-12 10:43:29,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15824 conditions, 2442 events. 1405/2442 cut-off events. For 115808/115811 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 13337 event pairs, 306 based on Foata normal form. 2/2328 useless extension candidates. Maximal degree in co-relation 15680. Up to 2116 conditions per place. [2024-05-12 10:43:29,971 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 240 selfloop transitions, 36 changer transitions 0/283 dead transitions. [2024-05-12 10:43:29,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 283 transitions, 3764 flow [2024-05-12 10:43:29,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:43:29,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:43:29,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-05-12 10:43:29,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4045584045584046 [2024-05-12 10:43:29,973 INFO L175 Difference]: Start difference. First operand has 285 places, 256 transitions, 3000 flow. Second operand 9 states and 142 transitions. [2024-05-12 10:43:29,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 283 transitions, 3764 flow [2024-05-12 10:43:30,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 283 transitions, 3634 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-05-12 10:43:30,538 INFO L231 Difference]: Finished difference. Result has 285 places, 260 transitions, 3082 flow [2024-05-12 10:43:30,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2870, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3082, PETRI_PLACES=285, PETRI_TRANSITIONS=260} [2024-05-12 10:43:30,538 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 242 predicate places. [2024-05-12 10:43:30,538 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 260 transitions, 3082 flow [2024-05-12 10:43:30,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:30,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:30,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:30,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-05-12 10:43:30,539 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:43:30,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:30,539 INFO L85 PathProgramCache]: Analyzing trace with hash -280533516, now seen corresponding path program 3 times [2024-05-12 10:43:30,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:30,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539407518] [2024-05-12 10:43:30,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:30,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:30,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:36,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:36,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:36,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539407518] [2024-05-12 10:43:36,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539407518] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:36,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:36,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 10:43:36,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276178674] [2024-05-12 10:43:36,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:36,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 10:43:36,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:36,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 10:43:36,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-05-12 10:43:37,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:43:37,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 260 transitions, 3082 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:37,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:37,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:43:37,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:38,303 INFO L124 PetriNetUnfolderBase]: 1437/2501 cut-off events. [2024-05-12 10:43:38,303 INFO L125 PetriNetUnfolderBase]: For 128474/128477 co-relation queries the response was YES. [2024-05-12 10:43:38,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16349 conditions, 2501 events. 1437/2501 cut-off events. For 128474/128477 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 13809 event pairs, 307 based on Foata normal form. 6/2391 useless extension candidates. Maximal degree in co-relation 16204. Up to 2181 conditions per place. [2024-05-12 10:43:38,332 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 249 selfloop transitions, 36 changer transitions 0/292 dead transitions. [2024-05-12 10:43:38,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 292 transitions, 3902 flow [2024-05-12 10:43:38,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 10:43:38,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 10:43:38,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 165 transitions. [2024-05-12 10:43:38,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2024-05-12 10:43:38,333 INFO L175 Difference]: Start difference. First operand has 285 places, 260 transitions, 3082 flow. Second operand 11 states and 165 transitions. [2024-05-12 10:43:38,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 292 transitions, 3902 flow [2024-05-12 10:43:38,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 292 transitions, 3722 flow, removed 57 selfloop flow, removed 6 redundant places. [2024-05-12 10:43:38,959 INFO L231 Difference]: Finished difference. Result has 290 places, 262 transitions, 3091 flow [2024-05-12 10:43:38,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2902, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3091, PETRI_PLACES=290, PETRI_TRANSITIONS=262} [2024-05-12 10:43:38,960 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 247 predicate places. [2024-05-12 10:43:38,960 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 262 transitions, 3091 flow [2024-05-12 10:43:38,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:38,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:38,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:38,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-05-12 10:43:38,960 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:43:38,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:38,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1654384964, now seen corresponding path program 16 times [2024-05-12 10:43:38,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:38,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847250609] [2024-05-12 10:43:38,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:38,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:39,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:44,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:44,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:44,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847250609] [2024-05-12 10:43:44,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847250609] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:44,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:44,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 10:43:44,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555206474] [2024-05-12 10:43:44,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:44,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 10:43:44,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:44,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 10:43:44,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-05-12 10:43:44,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:43:44,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 262 transitions, 3091 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:44,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:44,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:43:44,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:45,721 INFO L124 PetriNetUnfolderBase]: 1480/2565 cut-off events. [2024-05-12 10:43:45,721 INFO L125 PetriNetUnfolderBase]: For 139797/139800 co-relation queries the response was YES. [2024-05-12 10:43:45,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17178 conditions, 2565 events. 1480/2565 cut-off events. For 139797/139800 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 14159 event pairs, 234 based on Foata normal form. 2/2443 useless extension candidates. Maximal degree in co-relation 17032. Up to 1364 conditions per place. [2024-05-12 10:43:45,750 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 186 selfloop transitions, 107 changer transitions 0/300 dead transitions. [2024-05-12 10:43:45,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 300 transitions, 4545 flow [2024-05-12 10:43:45,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:43:45,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:43:45,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-05-12 10:43:45,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-05-12 10:43:45,752 INFO L175 Difference]: Start difference. First operand has 290 places, 262 transitions, 3091 flow. Second operand 10 states and 169 transitions. [2024-05-12 10:43:45,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 300 transitions, 4545 flow [2024-05-12 10:43:46,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 300 transitions, 4372 flow, removed 52 selfloop flow, removed 9 redundant places. [2024-05-12 10:43:46,403 INFO L231 Difference]: Finished difference. Result has 291 places, 269 transitions, 3373 flow [2024-05-12 10:43:46,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2918, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3373, PETRI_PLACES=291, PETRI_TRANSITIONS=269} [2024-05-12 10:43:46,403 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 248 predicate places. [2024-05-12 10:43:46,403 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 269 transitions, 3373 flow [2024-05-12 10:43:46,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:46,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:46,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:46,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-05-12 10:43:46,404 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:43:46,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:46,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1654085752, now seen corresponding path program 4 times [2024-05-12 10:43:46,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:46,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128443025] [2024-05-12 10:43:46,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:46,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:46,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:52,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:52,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:52,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128443025] [2024-05-12 10:43:52,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128443025] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:52,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:52,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 10:43:52,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856196413] [2024-05-12 10:43:52,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:52,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 10:43:52,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:52,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 10:43:52,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 10:43:52,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-05-12 10:43:52,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 269 transitions, 3373 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:52,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:52,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-05-12 10:43:52,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:53,216 INFO L124 PetriNetUnfolderBase]: 1161/2102 cut-off events. [2024-05-12 10:43:53,217 INFO L125 PetriNetUnfolderBase]: For 149109/149145 co-relation queries the response was YES. [2024-05-12 10:43:53,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15164 conditions, 2102 events. 1161/2102 cut-off events. For 149109/149145 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 11798 event pairs, 335 based on Foata normal form. 10/1976 useless extension candidates. Maximal degree in co-relation 15017. Up to 1864 conditions per place. [2024-05-12 10:43:53,241 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 256 selfloop transitions, 25 changer transitions 0/290 dead transitions. [2024-05-12 10:43:53,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 290 transitions, 4137 flow [2024-05-12 10:43:53,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 10:43:53,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 10:43:53,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 166 transitions. [2024-05-12 10:43:53,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38694638694638694 [2024-05-12 10:43:53,242 INFO L175 Difference]: Start difference. First operand has 291 places, 269 transitions, 3373 flow. Second operand 11 states and 166 transitions. [2024-05-12 10:43:53,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 290 transitions, 4137 flow [2024-05-12 10:43:53,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 290 transitions, 3879 flow, removed 62 selfloop flow, removed 5 redundant places. [2024-05-12 10:43:53,820 INFO L231 Difference]: Finished difference. Result has 297 places, 271 transitions, 3286 flow [2024-05-12 10:43:53,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3115, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3286, PETRI_PLACES=297, PETRI_TRANSITIONS=271} [2024-05-12 10:43:53,821 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 254 predicate places. [2024-05-12 10:43:53,821 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 271 transitions, 3286 flow [2024-05-12 10:43:53,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:53,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:53,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:53,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-05-12 10:43:53,822 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:43:53,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:53,822 INFO L85 PathProgramCache]: Analyzing trace with hash -3784798, now seen corresponding path program 17 times [2024-05-12 10:43:53,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:53,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760646025] [2024-05-12 10:43:53,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:53,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:53,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:59,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:59,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:59,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760646025] [2024-05-12 10:43:59,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760646025] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:59,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:59,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 10:43:59,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914296428] [2024-05-12 10:43:59,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:59,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 10:43:59,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:59,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 10:43:59,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 10:43:59,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:43:59,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 271 transitions, 3286 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:59,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:59,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:43:59,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:44:00,369 INFO L124 PetriNetUnfolderBase]: 1525/2638 cut-off events. [2024-05-12 10:44:00,370 INFO L125 PetriNetUnfolderBase]: For 142527/142527 co-relation queries the response was YES. [2024-05-12 10:44:00,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17701 conditions, 2638 events. 1525/2638 cut-off events. For 142527/142527 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 14687 event pairs, 386 based on Foata normal form. 2/2517 useless extension candidates. Maximal degree in co-relation 17553. Up to 2330 conditions per place. [2024-05-12 10:44:00,396 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 261 selfloop transitions, 29 changer transitions 0/297 dead transitions. [2024-05-12 10:44:00,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 297 transitions, 4362 flow [2024-05-12 10:44:00,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:44:00,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:44:00,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-05-12 10:44:00,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39487179487179486 [2024-05-12 10:44:00,397 INFO L175 Difference]: Start difference. First operand has 297 places, 271 transitions, 3286 flow. Second operand 10 states and 154 transitions. [2024-05-12 10:44:00,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 297 transitions, 4362 flow [2024-05-12 10:44:01,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 297 transitions, 4169 flow, removed 73 selfloop flow, removed 9 redundant places. [2024-05-12 10:44:01,065 INFO L231 Difference]: Finished difference. Result has 299 places, 273 transitions, 3234 flow [2024-05-12 10:44:01,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3093, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3234, PETRI_PLACES=299, PETRI_TRANSITIONS=273} [2024-05-12 10:44:01,065 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 256 predicate places. [2024-05-12 10:44:01,066 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 273 transitions, 3234 flow [2024-05-12 10:44:01,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:01,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:44:01,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:44:01,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-05-12 10:44:01,066 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:44:01,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:44:01,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1607028620, now seen corresponding path program 5 times [2024-05-12 10:44:01,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:44:01,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634556644] [2024-05-12 10:44:01,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:44:01,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:44:01,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:44:06,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:44:06,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:44:06,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634556644] [2024-05-12 10:44:06,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634556644] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:44:06,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:44:06,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 10:44:06,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020535632] [2024-05-12 10:44:06,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:44:06,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 10:44:06,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:44:06,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 10:44:06,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-05-12 10:44:06,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:44:06,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 273 transitions, 3234 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:06,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:44:06,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:44:06,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:44:07,581 INFO L124 PetriNetUnfolderBase]: 1576/2730 cut-off events. [2024-05-12 10:44:07,582 INFO L125 PetriNetUnfolderBase]: For 164960/164960 co-relation queries the response was YES. [2024-05-12 10:44:07,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18581 conditions, 2730 events. 1576/2730 cut-off events. For 164960/164960 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 15345 event pairs, 395 based on Foata normal form. 4/2620 useless extension candidates. Maximal degree in co-relation 18431. Up to 2416 conditions per place. [2024-05-12 10:44:07,611 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 276 selfloop transitions, 23 changer transitions 0/306 dead transitions. [2024-05-12 10:44:07,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 306 transitions, 4374 flow [2024-05-12 10:44:07,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 10:44:07,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 10:44:07,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 164 transitions. [2024-05-12 10:44:07,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3822843822843823 [2024-05-12 10:44:07,613 INFO L175 Difference]: Start difference. First operand has 299 places, 273 transitions, 3234 flow. Second operand 11 states and 164 transitions. [2024-05-12 10:44:07,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 306 transitions, 4374 flow [2024-05-12 10:44:08,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 306 transitions, 4297 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-05-12 10:44:08,360 INFO L231 Difference]: Finished difference. Result has 301 places, 277 transitions, 3444 flow [2024-05-12 10:44:08,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3157, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3444, PETRI_PLACES=301, PETRI_TRANSITIONS=277} [2024-05-12 10:44:08,360 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 258 predicate places. [2024-05-12 10:44:08,360 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 277 transitions, 3444 flow [2024-05-12 10:44:08,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:08,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:44:08,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:44:08,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-05-12 10:44:08,361 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:44:08,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:44:08,361 INFO L85 PathProgramCache]: Analyzing trace with hash -454112836, now seen corresponding path program 18 times [2024-05-12 10:44:08,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:44:08,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177100341] [2024-05-12 10:44:08,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:44:08,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:44:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:44:13,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:44:13,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:44:13,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177100341] [2024-05-12 10:44:13,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177100341] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:44:13,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:44:13,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 10:44:13,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389081453] [2024-05-12 10:44:13,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:44:13,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 10:44:13,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:44:13,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 10:44:13,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-05-12 10:44:13,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:44:13,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 277 transitions, 3444 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:13,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:44:13,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:44:13,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:44:14,653 INFO L124 PetriNetUnfolderBase]: 1585/2742 cut-off events. [2024-05-12 10:44:14,653 INFO L125 PetriNetUnfolderBase]: For 161560/161560 co-relation queries the response was YES. [2024-05-12 10:44:14,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18525 conditions, 2742 events. 1585/2742 cut-off events. For 161560/161560 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 15438 event pairs, 423 based on Foata normal form. 4/2618 useless extension candidates. Maximal degree in co-relation 18375. Up to 2524 conditions per place. [2024-05-12 10:44:14,683 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 273 selfloop transitions, 23 changer transitions 0/303 dead transitions. [2024-05-12 10:44:14,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 303 transitions, 4352 flow [2024-05-12 10:44:14,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 10:44:14,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 10:44:14,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 160 transitions. [2024-05-12 10:44:14,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.372960372960373 [2024-05-12 10:44:14,684 INFO L175 Difference]: Start difference. First operand has 301 places, 277 transitions, 3444 flow. Second operand 11 states and 160 transitions. [2024-05-12 10:44:14,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 303 transitions, 4352 flow [2024-05-12 10:44:15,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 303 transitions, 4148 flow, removed 90 selfloop flow, removed 7 redundant places. [2024-05-12 10:44:15,425 INFO L231 Difference]: Finished difference. Result has 306 places, 279 transitions, 3356 flow [2024-05-12 10:44:15,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3240, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3356, PETRI_PLACES=306, PETRI_TRANSITIONS=279} [2024-05-12 10:44:15,426 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 263 predicate places. [2024-05-12 10:44:15,426 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 279 transitions, 3356 flow [2024-05-12 10:44:15,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:15,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:44:15,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:44:15,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-05-12 10:44:15,426 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:44:15,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:44:15,427 INFO L85 PathProgramCache]: Analyzing trace with hash -454101924, now seen corresponding path program 6 times [2024-05-12 10:44:15,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:44:15,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979225206] [2024-05-12 10:44:15,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:44:15,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:44:15,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:44:21,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:44:21,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:44:21,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979225206] [2024-05-12 10:44:21,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979225206] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:44:21,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:44:21,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 10:44:21,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990106481] [2024-05-12 10:44:21,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:44:21,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 10:44:21,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:44:21,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 10:44:21,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-05-12 10:44:21,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:44:21,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 279 transitions, 3356 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:21,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:44:21,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:44:21,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:44:23,013 INFO L124 PetriNetUnfolderBase]: 1579/2733 cut-off events. [2024-05-12 10:44:23,013 INFO L125 PetriNetUnfolderBase]: For 139764/139764 co-relation queries the response was YES. [2024-05-12 10:44:23,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17637 conditions, 2733 events. 1579/2733 cut-off events. For 139764/139764 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 15383 event pairs, 411 based on Foata normal form. 4/2611 useless extension candidates. Maximal degree in co-relation 17484. Up to 2497 conditions per place. [2024-05-12 10:44:23,039 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 277 selfloop transitions, 20 changer transitions 0/304 dead transitions. [2024-05-12 10:44:23,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 304 transitions, 4056 flow [2024-05-12 10:44:23,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 10:44:23,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 10:44:23,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 159 transitions. [2024-05-12 10:44:23,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3706293706293706 [2024-05-12 10:44:23,041 INFO L175 Difference]: Start difference. First operand has 306 places, 279 transitions, 3356 flow. Second operand 11 states and 159 transitions. [2024-05-12 10:44:23,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 304 transitions, 4056 flow [2024-05-12 10:44:23,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 304 transitions, 3925 flow, removed 45 selfloop flow, removed 9 redundant places. [2024-05-12 10:44:23,649 INFO L231 Difference]: Finished difference. Result has 308 places, 279 transitions, 3271 flow [2024-05-12 10:44:23,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3225, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3271, PETRI_PLACES=308, PETRI_TRANSITIONS=279} [2024-05-12 10:44:23,649 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 265 predicate places. [2024-05-12 10:44:23,649 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 279 transitions, 3271 flow [2024-05-12 10:44:23,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:23,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:44:23,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:44:23,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-05-12 10:44:23,650 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:44:23,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:44:23,650 INFO L85 PathProgramCache]: Analyzing trace with hash -69075573, now seen corresponding path program 1 times [2024-05-12 10:44:23,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:44:23,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354248296] [2024-05-12 10:44:23,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:44:23,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:44:23,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:44:27,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:44:27,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:44:27,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354248296] [2024-05-12 10:44:27,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354248296] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:44:27,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:44:27,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 10:44:27,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431791953] [2024-05-12 10:44:27,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:44:27,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 10:44:27,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:44:27,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 10:44:27,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-05-12 10:44:27,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:44:27,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 279 transitions, 3271 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:27,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:44:27,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:44:27,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:44:29,080 INFO L124 PetriNetUnfolderBase]: 1603/2779 cut-off events. [2024-05-12 10:44:29,080 INFO L125 PetriNetUnfolderBase]: For 132405/132405 co-relation queries the response was YES. [2024-05-12 10:44:29,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17825 conditions, 2779 events. 1603/2779 cut-off events. For 132405/132405 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 15694 event pairs, 289 based on Foata normal form. 2/2662 useless extension candidates. Maximal degree in co-relation 17671. Up to 2381 conditions per place. [2024-05-12 10:44:29,108 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 278 selfloop transitions, 35 changer transitions 0/320 dead transitions. [2024-05-12 10:44:29,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 320 transitions, 4193 flow [2024-05-12 10:44:29,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 10:44:29,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 10:44:29,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-05-12 10:44:29,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40326340326340326 [2024-05-12 10:44:29,109 INFO L175 Difference]: Start difference. First operand has 308 places, 279 transitions, 3271 flow. Second operand 11 states and 173 transitions. [2024-05-12 10:44:29,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 320 transitions, 4193 flow [2024-05-12 10:44:29,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 320 transitions, 4148 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-05-12 10:44:29,744 INFO L231 Difference]: Finished difference. Result has 310 places, 282 transitions, 3453 flow [2024-05-12 10:44:29,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3226, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3453, PETRI_PLACES=310, PETRI_TRANSITIONS=282} [2024-05-12 10:44:29,747 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 267 predicate places. [2024-05-12 10:44:29,747 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 282 transitions, 3453 flow [2024-05-12 10:44:29,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:29,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:44:29,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:44:29,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-05-12 10:44:29,748 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:44:29,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:44:29,748 INFO L85 PathProgramCache]: Analyzing trace with hash -66244653, now seen corresponding path program 2 times [2024-05-12 10:44:29,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:44:29,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742131236] [2024-05-12 10:44:29,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:44:29,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:44:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:44:34,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:44:34,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:44:34,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742131236] [2024-05-12 10:44:34,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742131236] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:44:34,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:44:34,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 10:44:34,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372046514] [2024-05-12 10:44:34,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:44:34,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 10:44:34,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:44:34,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 10:44:34,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 10:44:34,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:44:34,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 282 transitions, 3453 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 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) [2024-05-12 10:44:34,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:44:34,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:44:34,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:44:35,622 INFO L124 PetriNetUnfolderBase]: 1619/2807 cut-off events. [2024-05-12 10:44:35,622 INFO L125 PetriNetUnfolderBase]: For 138582/138582 co-relation queries the response was YES. [2024-05-12 10:44:35,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18324 conditions, 2807 events. 1619/2807 cut-off events. For 138582/138582 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 15911 event pairs, 398 based on Foata normal form. 2/2681 useless extension candidates. Maximal degree in co-relation 18168. Up to 2502 conditions per place. [2024-05-12 10:44:35,654 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 272 selfloop transitions, 34 changer transitions 0/313 dead transitions. [2024-05-12 10:44:35,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 313 transitions, 4283 flow [2024-05-12 10:44:35,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:44:35,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:44:35,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-05-12 10:44:35,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923076923076923 [2024-05-12 10:44:35,655 INFO L175 Difference]: Start difference. First operand has 310 places, 282 transitions, 3453 flow. Second operand 10 states and 153 transitions. [2024-05-12 10:44:35,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 313 transitions, 4283 flow [2024-05-12 10:44:36,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 313 transitions, 4086 flow, removed 67 selfloop flow, removed 8 redundant places. [2024-05-12 10:44:36,410 INFO L231 Difference]: Finished difference. Result has 312 places, 284 transitions, 3440 flow [2024-05-12 10:44:36,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3256, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3440, PETRI_PLACES=312, PETRI_TRANSITIONS=284} [2024-05-12 10:44:36,411 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 269 predicate places. [2024-05-12 10:44:36,411 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 284 transitions, 3440 flow [2024-05-12 10:44:36,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 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) [2024-05-12 10:44:36,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:44:36,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:44:36,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-05-12 10:44:36,411 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:44:36,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:44:36,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1665273015, now seen corresponding path program 3 times [2024-05-12 10:44:36,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:44:36,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852703942] [2024-05-12 10:44:36,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:44:36,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:44:36,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:44:41,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:44:41,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:44:41,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852703942] [2024-05-12 10:44:41,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852703942] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:44:41,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:44:41,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 10:44:41,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935659902] [2024-05-12 10:44:41,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:44:41,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 10:44:41,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:44:41,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 10:44:41,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 10:44:41,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:44:41,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 284 transitions, 3440 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 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) [2024-05-12 10:44:41,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:44:41,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:44:41,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:44:42,274 INFO L124 PetriNetUnfolderBase]: 1643/2857 cut-off events. [2024-05-12 10:44:42,275 INFO L125 PetriNetUnfolderBase]: For 143780/143780 co-relation queries the response was YES. [2024-05-12 10:44:42,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18548 conditions, 2857 events. 1643/2857 cut-off events. For 143780/143780 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 16311 event pairs, 400 based on Foata normal form. 2/2729 useless extension candidates. Maximal degree in co-relation 18391. Up to 2524 conditions per place. [2024-05-12 10:44:42,310 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 281 selfloop transitions, 32 changer transitions 0/320 dead transitions. [2024-05-12 10:44:42,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 320 transitions, 4354 flow [2024-05-12 10:44:42,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:44:42,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:44:42,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-05-12 10:44:42,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025641025641026 [2024-05-12 10:44:42,311 INFO L175 Difference]: Start difference. First operand has 312 places, 284 transitions, 3440 flow. Second operand 10 states and 157 transitions. [2024-05-12 10:44:42,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 320 transitions, 4354 flow [2024-05-12 10:44:43,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 320 transitions, 4188 flow, removed 51 selfloop flow, removed 8 redundant places. [2024-05-12 10:44:43,075 INFO L231 Difference]: Finished difference. Result has 315 places, 287 transitions, 3506 flow [2024-05-12 10:44:43,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3274, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3506, PETRI_PLACES=315, PETRI_TRANSITIONS=287} [2024-05-12 10:44:43,075 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 272 predicate places. [2024-05-12 10:44:43,075 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 287 transitions, 3506 flow [2024-05-12 10:44:43,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 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) [2024-05-12 10:44:43,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:44:43,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:44:43,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-05-12 10:44:43,076 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:44:43,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:44:43,076 INFO L85 PathProgramCache]: Analyzing trace with hash -533989061, now seen corresponding path program 4 times [2024-05-12 10:44:43,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:44:43,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902315485] [2024-05-12 10:44:43,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:44:43,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:44:43,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:44:47,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:44:47,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:44:47,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902315485] [2024-05-12 10:44:47,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902315485] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:44:47,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:44:47,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 10:44:47,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161390179] [2024-05-12 10:44:47,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:44:47,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 10:44:47,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:44:47,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 10:44:47,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 10:44:47,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:44:47,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 287 transitions, 3506 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 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) [2024-05-12 10:44:47,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:44:47,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:44:47,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:44:48,815 INFO L124 PetriNetUnfolderBase]: 1667/2908 cut-off events. [2024-05-12 10:44:48,815 INFO L125 PetriNetUnfolderBase]: For 149304/149304 co-relation queries the response was YES. [2024-05-12 10:44:48,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18948 conditions, 2908 events. 1667/2908 cut-off events. For 149304/149304 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 16716 event pairs, 398 based on Foata normal form. 2/2778 useless extension candidates. Maximal degree in co-relation 18789. Up to 2545 conditions per place. [2024-05-12 10:44:48,852 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 286 selfloop transitions, 31 changer transitions 0/324 dead transitions. [2024-05-12 10:44:48,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 324 transitions, 4438 flow [2024-05-12 10:44:48,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:44:48,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:44:48,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-05-12 10:44:48,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40512820512820513 [2024-05-12 10:44:48,853 INFO L175 Difference]: Start difference. First operand has 315 places, 287 transitions, 3506 flow. Second operand 10 states and 158 transitions. [2024-05-12 10:44:48,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 324 transitions, 4438 flow [2024-05-12 10:44:49,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 324 transitions, 4238 flow, removed 72 selfloop flow, removed 7 redundant places. [2024-05-12 10:44:49,778 INFO L231 Difference]: Finished difference. Result has 319 places, 290 transitions, 3542 flow [2024-05-12 10:44:49,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3306, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3542, PETRI_PLACES=319, PETRI_TRANSITIONS=290} [2024-05-12 10:44:49,778 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 276 predicate places. [2024-05-12 10:44:49,778 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 290 transitions, 3542 flow [2024-05-12 10:44:49,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 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) [2024-05-12 10:44:49,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:44:49,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:44:49,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-05-12 10:44:49,779 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:44:49,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:44:49,780 INFO L85 PathProgramCache]: Analyzing trace with hash -956214927, now seen corresponding path program 1 times [2024-05-12 10:44:49,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:44:49,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892564669] [2024-05-12 10:44:49,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:44:49,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:44:49,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:44:56,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:44:56,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:44:56,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892564669] [2024-05-12 10:44:56,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892564669] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:44:56,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:44:56,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 10:44:56,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635364961] [2024-05-12 10:44:56,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:44:56,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 10:44:56,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:44:56,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 10:44:56,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-05-12 10:44:56,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:44:56,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 290 transitions, 3542 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:56,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:44:56,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:44:56,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:44:57,453 INFO L124 PetriNetUnfolderBase]: 1680/2927 cut-off events. [2024-05-12 10:44:57,453 INFO L125 PetriNetUnfolderBase]: For 149289/149289 co-relation queries the response was YES. [2024-05-12 10:44:57,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18909 conditions, 2927 events. 1680/2927 cut-off events. For 149289/149289 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 16783 event pairs, 423 based on Foata normal form. 2/2792 useless extension candidates. Maximal degree in co-relation 18748. Up to 2628 conditions per place. [2024-05-12 10:44:57,495 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 284 selfloop transitions, 28 changer transitions 0/319 dead transitions. [2024-05-12 10:44:57,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 319 transitions, 4322 flow [2024-05-12 10:44:57,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:44:57,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:44:57,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 152 transitions. [2024-05-12 10:44:57,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38974358974358975 [2024-05-12 10:44:57,497 INFO L175 Difference]: Start difference. First operand has 319 places, 290 transitions, 3542 flow. Second operand 10 states and 152 transitions. [2024-05-12 10:44:57,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 319 transitions, 4322 flow [2024-05-12 10:44:58,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 319 transitions, 4118 flow, removed 75 selfloop flow, removed 7 redundant places. [2024-05-12 10:44:58,402 INFO L231 Difference]: Finished difference. Result has 322 places, 292 transitions, 3468 flow [2024-05-12 10:44:58,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3338, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3468, PETRI_PLACES=322, PETRI_TRANSITIONS=292} [2024-05-12 10:44:58,402 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 279 predicate places. [2024-05-12 10:44:58,402 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 292 transitions, 3468 flow [2024-05-12 10:44:58,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:44:58,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:44:58,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:44:58,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-05-12 10:44:58,404 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:44:58,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:44:58,404 INFO L85 PathProgramCache]: Analyzing trace with hash 654218788, now seen corresponding path program 1 times [2024-05-12 10:44:58,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:44:58,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684071547] [2024-05-12 10:44:58,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:44:58,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:44:58,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:45:04,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:45:04,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:45:04,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684071547] [2024-05-12 10:45:04,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684071547] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:45:04,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:45:04,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 10:45:04,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729976437] [2024-05-12 10:45:04,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:45:04,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 10:45:04,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:45:04,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 10:45:04,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 10:45:04,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:45:04,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 292 transitions, 3468 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 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) [2024-05-12 10:45:04,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:45:04,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:45:04,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:45:05,895 INFO L124 PetriNetUnfolderBase]: 1678/2924 cut-off events. [2024-05-12 10:45:05,896 INFO L125 PetriNetUnfolderBase]: For 137869/137869 co-relation queries the response was YES. [2024-05-12 10:45:05,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18440 conditions, 2924 events. 1678/2924 cut-off events. For 137869/137869 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 16795 event pairs, 422 based on Foata normal form. 1/2788 useless extension candidates. Maximal degree in co-relation 18278. Up to 2610 conditions per place. [2024-05-12 10:45:05,935 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 276 selfloop transitions, 36 changer transitions 0/319 dead transitions. [2024-05-12 10:45:05,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 319 transitions, 4184 flow [2024-05-12 10:45:05,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:45:05,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:45:05,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 151 transitions. [2024-05-12 10:45:05,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3871794871794872 [2024-05-12 10:45:05,936 INFO L175 Difference]: Start difference. First operand has 322 places, 292 transitions, 3468 flow. Second operand 10 states and 151 transitions. [2024-05-12 10:45:05,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 319 transitions, 4184 flow [2024-05-12 10:45:06,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 319 transitions, 4056 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-05-12 10:45:06,901 INFO L231 Difference]: Finished difference. Result has 324 places, 292 transitions, 3420 flow [2024-05-12 10:45:06,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3340, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3420, PETRI_PLACES=324, PETRI_TRANSITIONS=292} [2024-05-12 10:45:06,902 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 281 predicate places. [2024-05-12 10:45:06,902 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 292 transitions, 3420 flow [2024-05-12 10:45:06,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 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) [2024-05-12 10:45:06,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:45:06,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:45:06,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-05-12 10:45:06,903 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:45:06,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:45:06,903 INFO L85 PathProgramCache]: Analyzing trace with hash -13463315, now seen corresponding path program 5 times [2024-05-12 10:45:06,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:45:06,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200810520] [2024-05-12 10:45:06,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:45:06,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:45:06,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:45:11,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:45:11,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:45:11,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200810520] [2024-05-12 10:45:11,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200810520] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:45:11,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:45:11,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 10:45:11,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643006524] [2024-05-12 10:45:11,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:45:11,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 10:45:11,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:45:11,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 10:45:11,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-05-12 10:45:11,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:45:11,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 292 transitions, 3420 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 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) [2024-05-12 10:45:11,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:45:11,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:45:11,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:45:13,058 INFO L124 PetriNetUnfolderBase]: 1694/2953 cut-off events. [2024-05-12 10:45:13,058 INFO L125 PetriNetUnfolderBase]: For 148265/148265 co-relation queries the response was YES. [2024-05-12 10:45:13,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18688 conditions, 2953 events. 1694/2953 cut-off events. For 148265/148265 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 17044 event pairs, 382 based on Foata normal form. 2/2818 useless extension candidates. Maximal degree in co-relation 18525. Up to 2486 conditions per place. [2024-05-12 10:45:13,095 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 259 selfloop transitions, 57 changer transitions 0/323 dead transitions. [2024-05-12 10:45:13,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 323 transitions, 4288 flow [2024-05-12 10:45:13,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:45:13,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:45:13,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-05-12 10:45:13,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41025641025641024 [2024-05-12 10:45:13,097 INFO L175 Difference]: Start difference. First operand has 324 places, 292 transitions, 3420 flow. Second operand 10 states and 160 transitions. [2024-05-12 10:45:13,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 323 transitions, 4288 flow [2024-05-12 10:45:14,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 323 transitions, 4167 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-05-12 10:45:14,050 INFO L231 Difference]: Finished difference. Result has 324 places, 294 transitions, 3540 flow [2024-05-12 10:45:14,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3299, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3540, PETRI_PLACES=324, PETRI_TRANSITIONS=294} [2024-05-12 10:45:14,050 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 281 predicate places. [2024-05-12 10:45:14,050 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 294 transitions, 3540 flow [2024-05-12 10:45:14,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 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) [2024-05-12 10:45:14,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:45:14,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:45:14,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-05-12 10:45:14,051 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:45:14,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:45:14,052 INFO L85 PathProgramCache]: Analyzing trace with hash -13455379, now seen corresponding path program 2 times [2024-05-12 10:45:14,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:45:14,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023415568] [2024-05-12 10:45:14,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:45:14,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:45:14,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:45:20,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:45:20,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:45:20,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023415568] [2024-05-12 10:45:20,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023415568] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:45:20,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:45:20,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 10:45:20,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746947094] [2024-05-12 10:45:20,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:45:20,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 10:45:20,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:45:20,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 10:45:20,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-05-12 10:45:20,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:45:20,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 294 transitions, 3540 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:45:20,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:45:20,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:45:20,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:45:22,451 INFO L124 PetriNetUnfolderBase]: 1741/3022 cut-off events. [2024-05-12 10:45:22,451 INFO L125 PetriNetUnfolderBase]: For 174791/174791 co-relation queries the response was YES. [2024-05-12 10:45:22,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19950 conditions, 3022 events. 1741/3022 cut-off events. For 174791/174791 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 17425 event pairs, 383 based on Foata normal form. 2/2877 useless extension candidates. Maximal degree in co-relation 19786. Up to 2394 conditions per place. [2024-05-12 10:45:22,498 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 255 selfloop transitions, 70 changer transitions 0/332 dead transitions. [2024-05-12 10:45:22,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 332 transitions, 4902 flow [2024-05-12 10:45:22,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 10:45:22,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 10:45:22,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-05-12 10:45:22,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125874125874126 [2024-05-12 10:45:22,500 INFO L175 Difference]: Start difference. First operand has 324 places, 294 transitions, 3540 flow. Second operand 11 states and 177 transitions. [2024-05-12 10:45:22,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 332 transitions, 4902 flow [2024-05-12 10:45:23,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 332 transitions, 4677 flow, removed 57 selfloop flow, removed 8 redundant places. [2024-05-12 10:45:23,583 INFO L231 Difference]: Finished difference. Result has 327 places, 300 transitions, 3668 flow [2024-05-12 10:45:23,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3315, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3668, PETRI_PLACES=327, PETRI_TRANSITIONS=300} [2024-05-12 10:45:23,583 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 284 predicate places. [2024-05-12 10:45:23,583 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 300 transitions, 3668 flow [2024-05-12 10:45:23,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:45:23,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:45:23,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:45:23,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-05-12 10:45:23,584 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:45:23,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:45:23,584 INFO L85 PathProgramCache]: Analyzing trace with hash -13186268, now seen corresponding path program 1 times [2024-05-12 10:45:23,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:45:23,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308290803] [2024-05-12 10:45:23,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:45:23,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:45:23,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:45:31,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:45:31,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:45:31,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308290803] [2024-05-12 10:45:31,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308290803] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:45:31,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:45:31,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 10:45:31,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577757155] [2024-05-12 10:45:31,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:45:31,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 10:45:31,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:45:31,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 10:45:31,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-05-12 10:45:31,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:45:31,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 300 transitions, 3668 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:45:31,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:45:31,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:45:31,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:45:32,549 INFO L124 PetriNetUnfolderBase]: 1757/3052 cut-off events. [2024-05-12 10:45:32,550 INFO L125 PetriNetUnfolderBase]: For 179300/179300 co-relation queries the response was YES. [2024-05-12 10:45:32,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20213 conditions, 3052 events. 1757/3052 cut-off events. For 179300/179300 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 17737 event pairs, 443 based on Foata normal form. 2/2909 useless extension candidates. Maximal degree in co-relation 20048. Up to 2711 conditions per place. [2024-05-12 10:45:32,584 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 289 selfloop transitions, 37 changer transitions 0/333 dead transitions. [2024-05-12 10:45:32,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 333 transitions, 4590 flow [2024-05-12 10:45:32,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 10:45:32,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 10:45:32,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 166 transitions. [2024-05-12 10:45:32,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38694638694638694 [2024-05-12 10:45:32,585 INFO L175 Difference]: Start difference. First operand has 327 places, 300 transitions, 3668 flow. Second operand 11 states and 166 transitions. [2024-05-12 10:45:32,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 333 transitions, 4590 flow [2024-05-12 10:45:33,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 333 transitions, 4443 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-05-12 10:45:33,524 INFO L231 Difference]: Finished difference. Result has 332 places, 302 transitions, 3737 flow [2024-05-12 10:45:33,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3521, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3737, PETRI_PLACES=332, PETRI_TRANSITIONS=302} [2024-05-12 10:45:33,524 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 289 predicate places. [2024-05-12 10:45:33,524 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 302 transitions, 3737 flow [2024-05-12 10:45:33,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:45:33,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:45:33,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:45:33,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-05-12 10:45:33,526 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:45:33,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:45:33,527 INFO L85 PathProgramCache]: Analyzing trace with hash -220116755, now seen corresponding path program 6 times [2024-05-12 10:45:33,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:45:33,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261866592] [2024-05-12 10:45:33,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:45:33,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:45:33,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:45:38,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:45:38,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:45:38,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261866592] [2024-05-12 10:45:38,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261866592] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:45:38,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:45:38,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 10:45:38,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554391861] [2024-05-12 10:45:38,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:45:38,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 10:45:38,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:45:38,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 10:45:38,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-05-12 10:45:38,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:45:38,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 302 transitions, 3737 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:45:38,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:45:38,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:45:38,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:45:39,575 INFO L124 PetriNetUnfolderBase]: 1773/3079 cut-off events. [2024-05-12 10:45:39,575 INFO L125 PetriNetUnfolderBase]: For 184271/184271 co-relation queries the response was YES. [2024-05-12 10:45:39,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20497 conditions, 3079 events. 1773/3079 cut-off events. For 184271/184271 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 17864 event pairs, 429 based on Foata normal form. 2/2934 useless extension candidates. Maximal degree in co-relation 20330. Up to 2728 conditions per place. [2024-05-12 10:45:39,613 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 285 selfloop transitions, 38 changer transitions 0/330 dead transitions. [2024-05-12 10:45:39,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 330 transitions, 4605 flow [2024-05-12 10:45:39,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:45:39,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:45:39,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-05-12 10:45:39,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-05-12 10:45:39,614 INFO L175 Difference]: Start difference. First operand has 332 places, 302 transitions, 3737 flow. Second operand 10 states and 156 transitions. [2024-05-12 10:45:39,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 330 transitions, 4605 flow [2024-05-12 10:45:40,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 330 transitions, 4407 flow, removed 65 selfloop flow, removed 9 redundant places. [2024-05-12 10:45:40,590 INFO L231 Difference]: Finished difference. Result has 333 places, 304 transitions, 3748 flow [2024-05-12 10:45:40,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3541, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3748, PETRI_PLACES=333, PETRI_TRANSITIONS=304} [2024-05-12 10:45:40,591 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 290 predicate places. [2024-05-12 10:45:40,591 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 304 transitions, 3748 flow [2024-05-12 10:45:40,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:45:40,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:45:40,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:45:40,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-05-12 10:45:40,591 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:45:40,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:45:40,592 INFO L85 PathProgramCache]: Analyzing trace with hash -791577141, now seen corresponding path program 7 times [2024-05-12 10:45:40,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:45:40,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851595282] [2024-05-12 10:45:40,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:45:40,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:45:40,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:45:45,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:45:45,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:45:45,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851595282] [2024-05-12 10:45:45,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851595282] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:45:45,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:45:45,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 10:45:45,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872367609] [2024-05-12 10:45:45,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:45:45,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 10:45:45,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:45:45,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 10:45:45,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-05-12 10:45:45,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:45:45,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 304 transitions, 3748 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:45:45,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:45:45,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:45:45,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:45:47,066 INFO L124 PetriNetUnfolderBase]: 1797/3129 cut-off events. [2024-05-12 10:45:47,067 INFO L125 PetriNetUnfolderBase]: For 185397/185397 co-relation queries the response was YES. [2024-05-12 10:45:47,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20793 conditions, 3129 events. 1797/3129 cut-off events. For 185397/185397 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 18276 event pairs, 428 based on Foata normal form. 2/2982 useless extension candidates. Maximal degree in co-relation 20625. Up to 2745 conditions per place. [2024-05-12 10:45:47,114 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 292 selfloop transitions, 38 changer transitions 0/337 dead transitions. [2024-05-12 10:45:47,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 337 transitions, 4702 flow [2024-05-12 10:45:47,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:45:47,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:45:47,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-05-12 10:45:47,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41025641025641024 [2024-05-12 10:45:47,115 INFO L175 Difference]: Start difference. First operand has 333 places, 304 transitions, 3748 flow. Second operand 10 states and 160 transitions. [2024-05-12 10:45:47,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 337 transitions, 4702 flow [2024-05-12 10:45:48,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 337 transitions, 4511 flow, removed 59 selfloop flow, removed 8 redundant places. [2024-05-12 10:45:48,137 INFO L231 Difference]: Finished difference. Result has 336 places, 307 transitions, 3820 flow [2024-05-12 10:45:48,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3557, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3820, PETRI_PLACES=336, PETRI_TRANSITIONS=307} [2024-05-12 10:45:48,137 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 293 predicate places. [2024-05-12 10:45:48,137 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 307 transitions, 3820 flow [2024-05-12 10:45:48,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:45:48,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:45:48,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:45:48,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-05-12 10:45:48,138 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:45:48,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:45:48,138 INFO L85 PathProgramCache]: Analyzing trace with hash 147693619, now seen corresponding path program 8 times [2024-05-12 10:45:48,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:45:48,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259544804] [2024-05-12 10:45:48,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:45:48,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:45:48,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:45:53,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:45:53,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:45:53,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259544804] [2024-05-12 10:45:53,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259544804] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:45:53,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:45:53,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 10:45:53,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007921563] [2024-05-12 10:45:53,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:45:53,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 10:45:53,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:45:53,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 10:45:53,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-05-12 10:45:53,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:45:53,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 307 transitions, 3820 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 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) [2024-05-12 10:45:53,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:45:53,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:45:53,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:45:54,585 INFO L124 PetriNetUnfolderBase]: 1821/3180 cut-off events. [2024-05-12 10:45:54,585 INFO L125 PetriNetUnfolderBase]: For 192242/192242 co-relation queries the response was YES. [2024-05-12 10:45:54,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21223 conditions, 3180 events. 1821/3180 cut-off events. For 192242/192242 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 18719 event pairs, 427 based on Foata normal form. 2/3030 useless extension candidates. Maximal degree in co-relation 21053. Up to 2781 conditions per place. [2024-05-12 10:45:54,624 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 296 selfloop transitions, 38 changer transitions 0/341 dead transitions. [2024-05-12 10:45:54,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 341 transitions, 4792 flow [2024-05-12 10:45:54,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:45:54,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:45:54,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-05-12 10:45:54,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4128205128205128 [2024-05-12 10:45:54,625 INFO L175 Difference]: Start difference. First operand has 336 places, 307 transitions, 3820 flow. Second operand 10 states and 161 transitions. [2024-05-12 10:45:54,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 341 transitions, 4792 flow [2024-05-12 10:45:55,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 341 transitions, 4559 flow, removed 82 selfloop flow, removed 7 redundant places. [2024-05-12 10:45:55,754 INFO L231 Difference]: Finished difference. Result has 340 places, 310 transitions, 3856 flow [2024-05-12 10:45:55,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3587, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3856, PETRI_PLACES=340, PETRI_TRANSITIONS=310} [2024-05-12 10:45:55,755 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 297 predicate places. [2024-05-12 10:45:55,755 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 310 transitions, 3856 flow [2024-05-12 10:45:55,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 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) [2024-05-12 10:45:55,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:45:55,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:45:55,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-05-12 10:45:55,755 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:45:55,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:45:55,756 INFO L85 PathProgramCache]: Analyzing trace with hash -385354767, now seen corresponding path program 3 times [2024-05-12 10:45:55,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:45:55,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146126658] [2024-05-12 10:45:55,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:45:55,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:45:55,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:46:02,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:46:02,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:46:02,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146126658] [2024-05-12 10:46:02,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146126658] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:46:02,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:46:02,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 10:46:02,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976395348] [2024-05-12 10:46:02,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:46:02,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 10:46:02,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:46:02,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 10:46:02,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-05-12 10:46:03,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:46:03,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 310 transitions, 3856 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:46:03,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:46:03,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:46:03,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:46:04,479 INFO L124 PetriNetUnfolderBase]: 1834/3199 cut-off events. [2024-05-12 10:46:04,479 INFO L125 PetriNetUnfolderBase]: For 191922/191922 co-relation queries the response was YES. [2024-05-12 10:46:04,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21086 conditions, 3199 events. 1834/3199 cut-off events. For 191922/191922 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 18828 event pairs, 452 based on Foata normal form. 2/3045 useless extension candidates. Maximal degree in co-relation 20914. Up to 2827 conditions per place. [2024-05-12 10:46:04,518 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 292 selfloop transitions, 40 changer transitions 0/339 dead transitions. [2024-05-12 10:46:04,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 339 transitions, 4666 flow [2024-05-12 10:46:04,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 10:46:04,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 10:46:04,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 167 transitions. [2024-05-12 10:46:04,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38927738927738925 [2024-05-12 10:46:04,520 INFO L175 Difference]: Start difference. First operand has 340 places, 310 transitions, 3856 flow. Second operand 11 states and 167 transitions. [2024-05-12 10:46:04,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 339 transitions, 4666 flow [2024-05-12 10:46:05,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 339 transitions, 4427 flow, removed 85 selfloop flow, removed 7 redundant places. [2024-05-12 10:46:05,703 INFO L231 Difference]: Finished difference. Result has 344 places, 312 transitions, 3764 flow [2024-05-12 10:46:05,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3617, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3764, PETRI_PLACES=344, PETRI_TRANSITIONS=312} [2024-05-12 10:46:05,703 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 301 predicate places. [2024-05-12 10:46:05,703 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 312 transitions, 3764 flow [2024-05-12 10:46:05,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:46:05,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:46:05,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:46:05,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-05-12 10:46:05,704 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:46:05,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:46:05,704 INFO L85 PathProgramCache]: Analyzing trace with hash -183996747, now seen corresponding path program 4 times [2024-05-12 10:46:05,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:46:05,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562128851] [2024-05-12 10:46:05,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:46:05,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:46:05,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:46:12,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:46:12,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:46:12,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562128851] [2024-05-12 10:46:12,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562128851] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:46:12,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:46:12,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 10:46:12,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270363507] [2024-05-12 10:46:12,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:46:12,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 10:46:12,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:46:12,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 10:46:12,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-05-12 10:46:12,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:46:12,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 312 transitions, 3764 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:46:12,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:46:12,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:46:12,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:46:13,800 INFO L124 PetriNetUnfolderBase]: 1847/3218 cut-off events. [2024-05-12 10:46:13,801 INFO L125 PetriNetUnfolderBase]: For 189536/189536 co-relation queries the response was YES. [2024-05-12 10:46:13,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20869 conditions, 3218 events. 1847/3218 cut-off events. For 189536/189536 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 18908 event pairs, 418 based on Foata normal form. 2/3061 useless extension candidates. Maximal degree in co-relation 20696. Up to 2562 conditions per place. [2024-05-12 10:46:13,843 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 257 selfloop transitions, 83 changer transitions 0/347 dead transitions. [2024-05-12 10:46:13,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 347 transitions, 4834 flow [2024-05-12 10:46:13,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 10:46:13,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 10:46:13,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-05-12 10:46:13,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41025641025641024 [2024-05-12 10:46:13,844 INFO L175 Difference]: Start difference. First operand has 344 places, 312 transitions, 3764 flow. Second operand 11 states and 176 transitions. [2024-05-12 10:46:13,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 347 transitions, 4834 flow [2024-05-12 10:46:14,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 347 transitions, 4717 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-05-12 10:46:14,979 INFO L231 Difference]: Finished difference. Result has 346 places, 314 transitions, 3875 flow [2024-05-12 10:46:14,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3647, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3875, PETRI_PLACES=346, PETRI_TRANSITIONS=314} [2024-05-12 10:46:14,979 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 303 predicate places. [2024-05-12 10:46:14,979 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 314 transitions, 3875 flow [2024-05-12 10:46:14,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:46:14,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:46:14,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:46:14,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-05-12 10:46:14,980 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:46:14,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:46:14,980 INFO L85 PathProgramCache]: Analyzing trace with hash -184006047, now seen corresponding path program 5 times [2024-05-12 10:46:14,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:46:14,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552498894] [2024-05-12 10:46:14,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:46:14,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:46:15,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:46:20,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:46:20,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:46:20,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552498894] [2024-05-12 10:46:20,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552498894] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:46:20,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:46:20,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 10:46:20,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072457139] [2024-05-12 10:46:20,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:46:20,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 10:46:20,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:46:20,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 10:46:20,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-05-12 10:46:21,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:46:21,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 314 transitions, 3875 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:46:21,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:46:21,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:46:21,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:46:22,539 INFO L124 PetriNetUnfolderBase]: 1843/3212 cut-off events. [2024-05-12 10:46:22,540 INFO L125 PetriNetUnfolderBase]: For 181045/181045 co-relation queries the response was YES. [2024-05-12 10:46:22,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20767 conditions, 3212 events. 1843/3212 cut-off events. For 181045/181045 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 18863 event pairs, 418 based on Foata normal form. 2/3055 useless extension candidates. Maximal degree in co-relation 20593. Up to 2648 conditions per place. [2024-05-12 10:46:22,581 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 267 selfloop transitions, 71 changer transitions 0/345 dead transitions. [2024-05-12 10:46:22,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 345 transitions, 4667 flow [2024-05-12 10:46:22,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 10:46:22,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 10:46:22,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-05-12 10:46:22,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40326340326340326 [2024-05-12 10:46:22,582 INFO L175 Difference]: Start difference. First operand has 346 places, 314 transitions, 3875 flow. Second operand 11 states and 173 transitions. [2024-05-12 10:46:22,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 345 transitions, 4667 flow [2024-05-12 10:46:23,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 345 transitions, 4408 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-05-12 10:46:23,712 INFO L231 Difference]: Finished difference. Result has 348 places, 314 transitions, 3763 flow [2024-05-12 10:46:23,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3616, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3763, PETRI_PLACES=348, PETRI_TRANSITIONS=314} [2024-05-12 10:46:23,712 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 305 predicate places. [2024-05-12 10:46:23,712 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 314 transitions, 3763 flow [2024-05-12 10:46:23,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:46:23,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:46:23,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:46:23,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-05-12 10:46:23,713 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:46:23,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:46:23,713 INFO L85 PathProgramCache]: Analyzing trace with hash -191625103, now seen corresponding path program 9 times [2024-05-12 10:46:23,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:46:23,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532822082] [2024-05-12 10:46:23,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:46:23,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:46:23,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:46:28,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:46:28,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:46:28,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532822082] [2024-05-12 10:46:28,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532822082] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:46:28,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:46:28,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 10:46:28,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081705041] [2024-05-12 10:46:28,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:46:28,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 10:46:28,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:46:28,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 10:46:28,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-05-12 10:46:28,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:46:28,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 314 transitions, 3763 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:46:28,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:46:28,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:46:28,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:46:30,080 INFO L124 PetriNetUnfolderBase]: 1859/3240 cut-off events. [2024-05-12 10:46:30,080 INFO L125 PetriNetUnfolderBase]: For 186657/186657 co-relation queries the response was YES. [2024-05-12 10:46:30,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20818 conditions, 3240 events. 1859/3240 cut-off events. For 186657/186657 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 19062 event pairs, 435 based on Foata normal form. 2/3084 useless extension candidates. Maximal degree in co-relation 20644. Up to 2821 conditions per place. [2024-05-12 10:46:30,119 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 290 selfloop transitions, 47 changer transitions 0/344 dead transitions. [2024-05-12 10:46:30,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 344 transitions, 4681 flow [2024-05-12 10:46:30,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:46:30,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:46:30,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-05-12 10:46:30,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40512820512820513 [2024-05-12 10:46:30,120 INFO L175 Difference]: Start difference. First operand has 348 places, 314 transitions, 3763 flow. Second operand 10 states and 158 transitions. [2024-05-12 10:46:30,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 344 transitions, 4681 flow [2024-05-12 10:46:31,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 344 transitions, 4529 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-05-12 10:46:31,122 INFO L231 Difference]: Finished difference. Result has 348 places, 316 transitions, 3848 flow [2024-05-12 10:46:31,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3611, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3848, PETRI_PLACES=348, PETRI_TRANSITIONS=316} [2024-05-12 10:46:31,122 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 305 predicate places. [2024-05-12 10:46:31,122 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 316 transitions, 3848 flow [2024-05-12 10:46:31,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:46:31,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:46:31,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:46:31,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-05-12 10:46:31,123 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:46:31,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:46:31,123 INFO L85 PathProgramCache]: Analyzing trace with hash -191415357, now seen corresponding path program 6 times [2024-05-12 10:46:31,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:46:31,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761721193] [2024-05-12 10:46:31,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:46:31,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:46:31,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:46:37,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:46:37,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:46:37,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761721193] [2024-05-12 10:46:37,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761721193] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:46:37,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:46:37,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 10:46:37,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664639714] [2024-05-12 10:46:37,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:46:37,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 10:46:37,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:46:37,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 10:46:37,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-05-12 10:46:37,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:46:37,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 316 transitions, 3848 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:46:37,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:46:37,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:46:37,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:46:38,925 INFO L124 PetriNetUnfolderBase]: 1864/3247 cut-off events. [2024-05-12 10:46:38,926 INFO L125 PetriNetUnfolderBase]: For 185594/185594 co-relation queries the response was YES. [2024-05-12 10:46:38,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20779 conditions, 3247 events. 1864/3247 cut-off events. For 185594/185594 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 19118 event pairs, 435 based on Foata normal form. 2/3088 useless extension candidates. Maximal degree in co-relation 20604. Up to 2820 conditions per place. [2024-05-12 10:46:38,969 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 291 selfloop transitions, 49 changer transitions 0/347 dead transitions. [2024-05-12 10:46:38,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 347 transitions, 4688 flow [2024-05-12 10:46:38,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 10:46:38,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 10:46:38,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 169 transitions. [2024-05-12 10:46:38,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-05-12 10:46:38,970 INFO L175 Difference]: Start difference. First operand has 348 places, 316 transitions, 3848 flow. Second operand 11 states and 169 transitions. [2024-05-12 10:46:38,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 347 transitions, 4688 flow [2024-05-12 10:46:40,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 347 transitions, 4467 flow, removed 65 selfloop flow, removed 8 redundant places. [2024-05-12 10:46:40,153 INFO L231 Difference]: Finished difference. Result has 351 places, 318 transitions, 3794 flow [2024-05-12 10:46:40,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3627, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3794, PETRI_PLACES=351, PETRI_TRANSITIONS=318} [2024-05-12 10:46:40,154 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 308 predicate places. [2024-05-12 10:46:40,154 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 318 transitions, 3794 flow [2024-05-12 10:46:40,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:46:40,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:46:40,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:46:40,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-05-12 10:46:40,155 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:46:40,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:46:40,155 INFO L85 PathProgramCache]: Analyzing trace with hash -191630683, now seen corresponding path program 10 times [2024-05-12 10:46:40,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:46:40,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614886821] [2024-05-12 10:46:40,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:46:40,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:46:40,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:46:45,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:46:45,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:46:45,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614886821] [2024-05-12 10:46:45,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614886821] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:46:45,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:46:45,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 10:46:45,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492462916] [2024-05-12 10:46:45,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:46:45,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 10:46:45,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:46:45,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 10:46:45,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-05-12 10:46:45,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:46:45,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 318 transitions, 3794 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:46:45,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:46:45,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:46:45,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:46:47,003 INFO L124 PetriNetUnfolderBase]: 1888/3298 cut-off events. [2024-05-12 10:46:47,003 INFO L125 PetriNetUnfolderBase]: For 190464/190464 co-relation queries the response was YES. [2024-05-12 10:46:47,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21147 conditions, 3298 events. 1888/3298 cut-off events. For 190464/190464 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 19551 event pairs, 431 based on Foata normal form. 2/3137 useless extension candidates. Maximal degree in co-relation 20971. Up to 2845 conditions per place. [2024-05-12 10:46:47,051 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 299 selfloop transitions, 47 changer transitions 0/353 dead transitions. [2024-05-12 10:46:47,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 353 transitions, 4808 flow [2024-05-12 10:46:47,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:46:47,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:46:47,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-05-12 10:46:47,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153846153846154 [2024-05-12 10:46:47,053 INFO L175 Difference]: Start difference. First operand has 351 places, 318 transitions, 3794 flow. Second operand 10 states and 162 transitions. [2024-05-12 10:46:47,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 353 transitions, 4808 flow [2024-05-12 10:46:48,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 353 transitions, 4673 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-05-12 10:46:48,168 INFO L231 Difference]: Finished difference. Result has 353 places, 321 transitions, 3956 flow [2024-05-12 10:46:48,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3659, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3956, PETRI_PLACES=353, PETRI_TRANSITIONS=321} [2024-05-12 10:46:48,168 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 310 predicate places. [2024-05-12 10:46:48,168 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 321 transitions, 3956 flow [2024-05-12 10:46:48,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:46:48,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:46:48,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:46:48,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-05-12 10:46:48,169 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:46:48,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:46:48,169 INFO L85 PathProgramCache]: Analyzing trace with hash -2097043305, now seen corresponding path program 11 times [2024-05-12 10:46:48,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:46:48,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559008164] [2024-05-12 10:46:48,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:46:48,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:46:48,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:46:52,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:46:52,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:46:52,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559008164] [2024-05-12 10:46:52,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559008164] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:46:52,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:46:52,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 10:46:52,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060721149] [2024-05-12 10:46:52,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:46:52,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 10:46:52,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:46:52,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 10:46:52,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-05-12 10:46:53,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:46:53,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 321 transitions, 3956 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:46:53,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:46:53,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:46:53,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:46:54,388 INFO L124 PetriNetUnfolderBase]: 1904/3328 cut-off events. [2024-05-12 10:46:54,389 INFO L125 PetriNetUnfolderBase]: For 199532/199535 co-relation queries the response was YES. [2024-05-12 10:46:54,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21584 conditions, 3328 events. 1904/3328 cut-off events. For 199532/199535 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 19782 event pairs, 488 based on Foata normal form. 2/3161 useless extension candidates. Maximal degree in co-relation 21406. Up to 2955 conditions per place. [2024-05-12 10:46:54,432 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 303 selfloop transitions, 38 changer transitions 0/348 dead transitions. [2024-05-12 10:46:54,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 348 transitions, 4876 flow [2024-05-12 10:46:54,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:46:54,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:46:54,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-05-12 10:46:54,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39487179487179486 [2024-05-12 10:46:54,433 INFO L175 Difference]: Start difference. First operand has 353 places, 321 transitions, 3956 flow. Second operand 10 states and 154 transitions. [2024-05-12 10:46:54,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 348 transitions, 4876 flow [2024-05-12 10:46:55,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 348 transitions, 4609 flow, removed 90 selfloop flow, removed 7 redundant places. [2024-05-12 10:46:55,534 INFO L231 Difference]: Finished difference. Result has 356 places, 323 transitions, 3916 flow [2024-05-12 10:46:55,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3689, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3916, PETRI_PLACES=356, PETRI_TRANSITIONS=323} [2024-05-12 10:46:55,534 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 313 predicate places. [2024-05-12 10:46:55,534 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 323 transitions, 3916 flow [2024-05-12 10:46:55,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:46:55,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:46:55,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:46:55,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-05-12 10:46:55,535 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:46:55,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:46:55,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1072122417, now seen corresponding path program 7 times [2024-05-12 10:46:55,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:46:55,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413708137] [2024-05-12 10:46:55,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:46:55,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:46:55,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:47:01,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:47:01,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:47:01,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413708137] [2024-05-12 10:47:01,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413708137] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:47:01,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:47:01,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 10:47:01,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840660325] [2024-05-12 10:47:01,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:47:01,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 10:47:01,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:47:01,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 10:47:01,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-05-12 10:47:01,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:47:01,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 323 transitions, 3916 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 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) [2024-05-12 10:47:01,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:47:01,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:47:01,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:47:02,964 INFO L124 PetriNetUnfolderBase]: 1917/3347 cut-off events. [2024-05-12 10:47:02,964 INFO L125 PetriNetUnfolderBase]: For 197134/197137 co-relation queries the response was YES. [2024-05-12 10:47:03,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21301 conditions, 3347 events. 1917/3347 cut-off events. For 197134/197137 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 19918 event pairs, 361 based on Foata normal form. 2/3176 useless extension candidates. Maximal degree in co-relation 21122. Up to 2049 conditions per place. [2024-05-12 10:47:03,010 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 227 selfloop transitions, 128 changer transitions 0/362 dead transitions. [2024-05-12 10:47:03,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 362 transitions, 5266 flow [2024-05-12 10:47:03,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 10:47:03,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 10:47:03,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 196 transitions. [2024-05-12 10:47:03,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4188034188034188 [2024-05-12 10:47:03,011 INFO L175 Difference]: Start difference. First operand has 356 places, 323 transitions, 3916 flow. Second operand 12 states and 196 transitions. [2024-05-12 10:47:03,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 362 transitions, 5266 flow [2024-05-12 10:47:04,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 362 transitions, 5055 flow, removed 69 selfloop flow, removed 8 redundant places. [2024-05-12 10:47:04,250 INFO L231 Difference]: Finished difference. Result has 360 places, 325 transitions, 4023 flow [2024-05-12 10:47:04,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3705, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4023, PETRI_PLACES=360, PETRI_TRANSITIONS=325} [2024-05-12 10:47:04,251 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 317 predicate places. [2024-05-12 10:47:04,251 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 325 transitions, 4023 flow [2024-05-12 10:47:04,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 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) [2024-05-12 10:47:04,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:47:04,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:47:04,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-05-12 10:47:04,252 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:47:04,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:47:04,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1071853647, now seen corresponding path program 8 times [2024-05-12 10:47:04,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:47:04,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720934871] [2024-05-12 10:47:04,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:47:04,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:47:04,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:47:10,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:47:10,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:47:10,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720934871] [2024-05-12 10:47:10,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720934871] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:47:10,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:47:10,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 10:47:10,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104202639] [2024-05-12 10:47:10,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:47:10,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 10:47:10,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:47:10,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 10:47:10,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-05-12 10:47:10,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:47:10,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 325 transitions, 4023 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:10,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:47:10,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:47:10,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:47:12,374 INFO L124 PetriNetUnfolderBase]: 2048/3541 cut-off events. [2024-05-12 10:47:12,375 INFO L125 PetriNetUnfolderBase]: For 197844/197846 co-relation queries the response was YES. [2024-05-12 10:47:12,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22702 conditions, 3541 events. 2048/3541 cut-off events. For 197844/197846 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 21139 event pairs, 423 based on Foata normal form. 4/3356 useless extension candidates. Maximal degree in co-relation 22522. Up to 2706 conditions per place. [2024-05-12 10:47:12,423 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 300 selfloop transitions, 76 changer transitions 0/383 dead transitions. [2024-05-12 10:47:12,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 383 transitions, 5444 flow [2024-05-12 10:47:12,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-05-12 10:47:12,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-05-12 10:47:12,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 197 transitions. [2024-05-12 10:47:12,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.388560157790927 [2024-05-12 10:47:12,425 INFO L175 Difference]: Start difference. First operand has 360 places, 325 transitions, 4023 flow. Second operand 13 states and 197 transitions. [2024-05-12 10:47:12,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 383 transitions, 5444 flow [2024-05-12 10:47:13,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 383 transitions, 5056 flow, removed 37 selfloop flow, removed 11 redundant places. [2024-05-12 10:47:13,856 INFO L231 Difference]: Finished difference. Result has 364 places, 342 transitions, 4166 flow [2024-05-12 10:47:13,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3669, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4166, PETRI_PLACES=364, PETRI_TRANSITIONS=342} [2024-05-12 10:47:13,856 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 321 predicate places. [2024-05-12 10:47:13,856 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 342 transitions, 4166 flow [2024-05-12 10:47:13,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:13,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:47:13,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:47:13,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-05-12 10:47:13,857 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:47:13,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:47:13,857 INFO L85 PathProgramCache]: Analyzing trace with hash -535698895, now seen corresponding path program 12 times [2024-05-12 10:47:13,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:47:13,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803140702] [2024-05-12 10:47:13,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:47:13,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:47:13,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:47:18,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:47:18,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:47:18,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803140702] [2024-05-12 10:47:18,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803140702] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:47:18,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:47:18,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 10:47:18,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511088276] [2024-05-12 10:47:18,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:47:18,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 10:47:18,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:47:18,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 10:47:18,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-05-12 10:47:18,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:47:18,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 342 transitions, 4166 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:18,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:47:18,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:47:18,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:47:20,367 INFO L124 PetriNetUnfolderBase]: 2064/3573 cut-off events. [2024-05-12 10:47:20,368 INFO L125 PetriNetUnfolderBase]: For 204147/204150 co-relation queries the response was YES. [2024-05-12 10:47:20,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22965 conditions, 3573 events. 2064/3573 cut-off events. For 204147/204150 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 21380 event pairs, 490 based on Foata normal form. 2/3381 useless extension candidates. Maximal degree in co-relation 22783. Up to 3096 conditions per place. [2024-05-12 10:47:20,407 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 310 selfloop transitions, 55 changer transitions 0/372 dead transitions. [2024-05-12 10:47:20,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 372 transitions, 5158 flow [2024-05-12 10:47:20,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:47:20,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:47:20,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-05-12 10:47:20,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41025641025641024 [2024-05-12 10:47:20,409 INFO L175 Difference]: Start difference. First operand has 364 places, 342 transitions, 4166 flow. Second operand 10 states and 160 transitions. [2024-05-12 10:47:20,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 372 transitions, 5158 flow [2024-05-12 10:47:21,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 372 transitions, 5055 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-05-12 10:47:21,641 INFO L231 Difference]: Finished difference. Result has 363 places, 344 transitions, 4329 flow [2024-05-12 10:47:21,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4063, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4329, PETRI_PLACES=363, PETRI_TRANSITIONS=344} [2024-05-12 10:47:21,641 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 320 predicate places. [2024-05-12 10:47:21,641 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 344 transitions, 4329 flow [2024-05-12 10:47:21,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:21,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:47:21,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:47:21,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-05-12 10:47:21,642 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:47:21,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:47:21,642 INFO L85 PathProgramCache]: Analyzing trace with hash 547711579, now seen corresponding path program 9 times [2024-05-12 10:47:21,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:47:21,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416105093] [2024-05-12 10:47:21,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:47:21,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:47:21,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:47:27,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:47:27,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:47:27,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416105093] [2024-05-12 10:47:27,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416105093] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:47:27,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:47:27,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 10:47:27,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587204983] [2024-05-12 10:47:27,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:47:27,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 10:47:27,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:47:27,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 10:47:27,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 10:47:27,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-05-12 10:47:27,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 344 transitions, 4329 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:27,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:47:27,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-05-12 10:47:27,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:47:29,072 INFO L124 PetriNetUnfolderBase]: 1607/2886 cut-off events. [2024-05-12 10:47:29,073 INFO L125 PetriNetUnfolderBase]: For 219849/219877 co-relation queries the response was YES. [2024-05-12 10:47:29,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19840 conditions, 2886 events. 1607/2886 cut-off events. For 219849/219877 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 17441 event pairs, 441 based on Foata normal form. 15/2681 useless extension candidates. Maximal degree in co-relation 19658. Up to 2476 conditions per place. [2024-05-12 10:47:29,113 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 309 selfloop transitions, 53 changer transitions 0/371 dead transitions. [2024-05-12 10:47:29,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 371 transitions, 5515 flow [2024-05-12 10:47:29,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 10:47:29,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 10:47:29,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2024-05-12 10:47:29,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40792540792540793 [2024-05-12 10:47:29,115 INFO L175 Difference]: Start difference. First operand has 363 places, 344 transitions, 4329 flow. Second operand 11 states and 175 transitions. [2024-05-12 10:47:29,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 371 transitions, 5515 flow [2024-05-12 10:47:30,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 371 transitions, 5267 flow, removed 71 selfloop flow, removed 8 redundant places. [2024-05-12 10:47:30,331 INFO L231 Difference]: Finished difference. Result has 366 places, 348 transitions, 4344 flow [2024-05-12 10:47:30,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4081, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4344, PETRI_PLACES=366, PETRI_TRANSITIONS=348} [2024-05-12 10:47:30,331 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 323 predicate places. [2024-05-12 10:47:30,332 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 348 transitions, 4344 flow [2024-05-12 10:47:30,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:30,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:47:30,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:47:30,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-05-12 10:47:30,332 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:47:30,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:47:30,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1071845711, now seen corresponding path program 13 times [2024-05-12 10:47:30,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:47:30,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680868838] [2024-05-12 10:47:30,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:47:30,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:47:30,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:47:34,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:47:34,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:47:34,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680868838] [2024-05-12 10:47:34,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680868838] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:47:34,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:47:34,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 10:47:34,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071029987] [2024-05-12 10:47:34,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:47:34,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 10:47:34,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:47:34,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 10:47:34,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 10:47:34,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:47:34,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 348 transitions, 4344 flow. Second operand has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:34,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:47:34,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:47:34,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:47:36,012 INFO L124 PetriNetUnfolderBase]: 2110/3644 cut-off events. [2024-05-12 10:47:36,012 INFO L125 PetriNetUnfolderBase]: For 227879/227879 co-relation queries the response was YES. [2024-05-12 10:47:36,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23845 conditions, 3644 events. 2110/3644 cut-off events. For 227879/227879 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 21890 event pairs, 558 based on Foata normal form. 2/3450 useless extension candidates. Maximal degree in co-relation 23662. Up to 3430 conditions per place. [2024-05-12 10:47:36,064 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 349 selfloop transitions, 16 changer transitions 0/372 dead transitions. [2024-05-12 10:47:36,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 372 transitions, 5312 flow [2024-05-12 10:47:36,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:47:36,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:47:36,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 144 transitions. [2024-05-12 10:47:36,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36923076923076925 [2024-05-12 10:47:36,065 INFO L175 Difference]: Start difference. First operand has 366 places, 348 transitions, 4344 flow. Second operand 10 states and 144 transitions. [2024-05-12 10:47:36,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 372 transitions, 5312 flow [2024-05-12 10:47:37,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 372 transitions, 5172 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-05-12 10:47:37,391 INFO L231 Difference]: Finished difference. Result has 369 places, 350 transitions, 4395 flow [2024-05-12 10:47:37,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4204, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4395, PETRI_PLACES=369, PETRI_TRANSITIONS=350} [2024-05-12 10:47:37,391 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 326 predicate places. [2024-05-12 10:47:37,391 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 350 transitions, 4395 flow [2024-05-12 10:47:37,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:37,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:47:37,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:47:37,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-05-12 10:47:37,392 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:47:37,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:47:37,392 INFO L85 PathProgramCache]: Analyzing trace with hash 2032978399, now seen corresponding path program 14 times [2024-05-12 10:47:37,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:47:37,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025043314] [2024-05-12 10:47:37,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:47:37,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:47:37,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:47:42,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:47:42,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:47:42,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025043314] [2024-05-12 10:47:42,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025043314] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:47:42,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:47:42,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 10:47:42,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294459532] [2024-05-12 10:47:42,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:47:42,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 10:47:42,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:47:42,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 10:47:42,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-05-12 10:47:42,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:47:42,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 350 transitions, 4395 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:42,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:47:42,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:47:42,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:47:44,129 INFO L124 PetriNetUnfolderBase]: 2130/3689 cut-off events. [2024-05-12 10:47:44,129 INFO L125 PetriNetUnfolderBase]: For 237000/237003 co-relation queries the response was YES. [2024-05-12 10:47:44,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24299 conditions, 3689 events. 2130/3689 cut-off events. For 237000/237003 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 22242 event pairs, 515 based on Foata normal form. 2/3487 useless extension candidates. Maximal degree in co-relation 24114. Up to 3294 conditions per place. [2024-05-12 10:47:44,176 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 332 selfloop transitions, 39 changer transitions 0/378 dead transitions. [2024-05-12 10:47:44,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 378 transitions, 5393 flow [2024-05-12 10:47:44,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:47:44,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:47:44,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-05-12 10:47:44,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39487179487179486 [2024-05-12 10:47:44,177 INFO L175 Difference]: Start difference. First operand has 369 places, 350 transitions, 4395 flow. Second operand 10 states and 154 transitions. [2024-05-12 10:47:44,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 378 transitions, 5393 flow [2024-05-12 10:47:45,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 378 transitions, 5218 flow, removed 73 selfloop flow, removed 8 redundant places. [2024-05-12 10:47:45,402 INFO L231 Difference]: Finished difference. Result has 371 places, 351 transitions, 4356 flow [2024-05-12 10:47:45,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4220, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4356, PETRI_PLACES=371, PETRI_TRANSITIONS=351} [2024-05-12 10:47:45,402 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 328 predicate places. [2024-05-12 10:47:45,402 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 351 transitions, 4356 flow [2024-05-12 10:47:45,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:45,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:47:45,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:47:45,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-05-12 10:47:45,403 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:47:45,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:47:45,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1192585881, now seen corresponding path program 10 times [2024-05-12 10:47:45,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:47:45,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853891259] [2024-05-12 10:47:45,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:47:45,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:47:45,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:47:51,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:47:51,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:47:51,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853891259] [2024-05-12 10:47:51,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853891259] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:47:51,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:47:51,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 10:47:51,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170702258] [2024-05-12 10:47:51,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:47:51,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 10:47:51,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:47:51,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 10:47:51,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-05-12 10:47:51,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:47:51,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 351 transitions, 4356 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:51,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:47:51,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:47:51,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:47:53,608 INFO L124 PetriNetUnfolderBase]: 2126/3680 cut-off events. [2024-05-12 10:47:53,608 INFO L125 PetriNetUnfolderBase]: For 221235/221235 co-relation queries the response was YES. [2024-05-12 10:47:53,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23800 conditions, 3680 events. 2126/3680 cut-off events. For 221235/221235 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 22212 event pairs, 560 based on Foata normal form. 2/3482 useless extension candidates. Maximal degree in co-relation 23614. Up to 3419 conditions per place. [2024-05-12 10:47:53,657 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 346 selfloop transitions, 23 changer transitions 0/376 dead transitions. [2024-05-12 10:47:53,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 376 transitions, 5182 flow [2024-05-12 10:47:53,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 10:47:53,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 10:47:53,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 170 transitions. [2024-05-12 10:47:53,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36324786324786323 [2024-05-12 10:47:53,672 INFO L175 Difference]: Start difference. First operand has 371 places, 351 transitions, 4356 flow. Second operand 12 states and 170 transitions. [2024-05-12 10:47:53,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 376 transitions, 5182 flow [2024-05-12 10:47:55,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 376 transitions, 5062 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-05-12 10:47:55,234 INFO L231 Difference]: Finished difference. Result has 375 places, 351 transitions, 4288 flow [2024-05-12 10:47:55,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4236, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4288, PETRI_PLACES=375, PETRI_TRANSITIONS=351} [2024-05-12 10:47:55,235 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 332 predicate places. [2024-05-12 10:47:55,235 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 351 transitions, 4288 flow [2024-05-12 10:47:55,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:47:55,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:47:55,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:47:55,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-05-12 10:47:55,236 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:47:55,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:47:55,236 INFO L85 PathProgramCache]: Analyzing trace with hash -543050545, now seen corresponding path program 15 times [2024-05-12 10:47:55,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:47:55,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183553772] [2024-05-12 10:47:55,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:47:55,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:47:55,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:48:00,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:48:00,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:48:00,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183553772] [2024-05-12 10:48:00,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183553772] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:48:00,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:48:00,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 10:48:00,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497874920] [2024-05-12 10:48:00,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:48:00,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 10:48:00,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:48:00,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 10:48:00,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-05-12 10:48:00,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:48:00,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 351 transitions, 4288 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:00,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:48:00,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:48:00,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:48:01,689 INFO L124 PetriNetUnfolderBase]: 2142/3711 cut-off events. [2024-05-12 10:48:01,689 INFO L125 PetriNetUnfolderBase]: For 227674/227677 co-relation queries the response was YES. [2024-05-12 10:48:01,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24068 conditions, 3711 events. 2142/3711 cut-off events. For 227674/227677 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 22405 event pairs, 515 based on Foata normal form. 2/3510 useless extension candidates. Maximal degree in co-relation 23881. Up to 3263 conditions per place. [2024-05-12 10:48:01,737 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 326 selfloop transitions, 48 changer transitions 0/381 dead transitions. [2024-05-12 10:48:01,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 381 transitions, 5338 flow [2024-05-12 10:48:01,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:48:01,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:48:01,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-05-12 10:48:01,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40512820512820513 [2024-05-12 10:48:01,739 INFO L175 Difference]: Start difference. First operand has 375 places, 351 transitions, 4288 flow. Second operand 10 states and 158 transitions. [2024-05-12 10:48:01,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 381 transitions, 5338 flow [2024-05-12 10:48:03,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 381 transitions, 5282 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-05-12 10:48:03,025 INFO L231 Difference]: Finished difference. Result has 374 places, 354 transitions, 4535 flow [2024-05-12 10:48:03,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4232, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4535, PETRI_PLACES=374, PETRI_TRANSITIONS=354} [2024-05-12 10:48:03,025 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 331 predicate places. [2024-05-12 10:48:03,025 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 354 transitions, 4535 flow [2024-05-12 10:48:03,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:03,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:48:03,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:48:03,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-05-12 10:48:03,026 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:48:03,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:48:03,026 INFO L85 PathProgramCache]: Analyzing trace with hash -2005019171, now seen corresponding path program 11 times [2024-05-12 10:48:03,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:48:03,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296922903] [2024-05-12 10:48:03,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:48:03,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:48:03,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:48:09,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:48:09,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:48:09,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296922903] [2024-05-12 10:48:09,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296922903] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:48:09,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:48:09,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 10:48:09,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272945311] [2024-05-12 10:48:09,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:48:09,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 10:48:09,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:48:09,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 10:48:09,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-05-12 10:48:10,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:48:10,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 354 transitions, 4535 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:10,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:48:10,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:48:10,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:48:11,658 INFO L124 PetriNetUnfolderBase]: 2155/3730 cut-off events. [2024-05-12 10:48:11,658 INFO L125 PetriNetUnfolderBase]: For 233320/233323 co-relation queries the response was YES. [2024-05-12 10:48:11,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24442 conditions, 3730 events. 2155/3730 cut-off events. For 233320/233323 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 22537 event pairs, 499 based on Foata normal form. 2/3523 useless extension candidates. Maximal degree in co-relation 24254. Up to 3229 conditions per place. [2024-05-12 10:48:11,714 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 326 selfloop transitions, 53 changer transitions 0/386 dead transitions. [2024-05-12 10:48:11,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 386 transitions, 5699 flow [2024-05-12 10:48:11,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 10:48:11,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 10:48:11,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-05-12 10:48:11,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40326340326340326 [2024-05-12 10:48:11,716 INFO L175 Difference]: Start difference. First operand has 374 places, 354 transitions, 4535 flow. Second operand 11 states and 173 transitions. [2024-05-12 10:48:11,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 386 transitions, 5699 flow [2024-05-12 10:48:12,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 386 transitions, 5424 flow, removed 92 selfloop flow, removed 8 redundant places. [2024-05-12 10:48:13,003 INFO L231 Difference]: Finished difference. Result has 377 places, 356 transitions, 4429 flow [2024-05-12 10:48:13,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4260, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4429, PETRI_PLACES=377, PETRI_TRANSITIONS=356} [2024-05-12 10:48:13,004 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 334 predicate places. [2024-05-12 10:48:13,005 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 356 transitions, 4429 flow [2024-05-12 10:48:13,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:13,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:48:13,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:48:13,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-05-12 10:48:13,007 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:48:13,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:48:13,008 INFO L85 PathProgramCache]: Analyzing trace with hash 5522437, now seen corresponding path program 12 times [2024-05-12 10:48:13,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:48:13,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727549725] [2024-05-12 10:48:13,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:48:13,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:48:13,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:48:19,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:48:19,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:48:19,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727549725] [2024-05-12 10:48:19,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727549725] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:48:19,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:48:19,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 10:48:19,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422136291] [2024-05-12 10:48:19,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:48:19,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 10:48:19,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:48:19,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 10:48:19,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-05-12 10:48:19,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-05-12 10:48:19,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 356 transitions, 4429 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:19,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:48:19,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-05-12 10:48:19,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:48:21,390 INFO L124 PetriNetUnfolderBase]: 2168/3750 cut-off events. [2024-05-12 10:48:21,390 INFO L125 PetriNetUnfolderBase]: For 226985/226988 co-relation queries the response was YES. [2024-05-12 10:48:21,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24058 conditions, 3750 events. 2168/3750 cut-off events. For 226985/226988 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 22648 event pairs, 425 based on Foata normal form. 2/3540 useless extension candidates. Maximal degree in co-relation 23869. Up to 3127 conditions per place. [2024-05-12 10:48:21,443 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 311 selfloop transitions, 73 changer transitions 0/391 dead transitions. [2024-05-12 10:48:21,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 391 transitions, 5645 flow [2024-05-12 10:48:21,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 10:48:21,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 10:48:21,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-05-12 10:48:21,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125874125874126 [2024-05-12 10:48:21,444 INFO L175 Difference]: Start difference. First operand has 377 places, 356 transitions, 4429 flow. Second operand 11 states and 177 transitions. [2024-05-12 10:48:21,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 391 transitions, 5645 flow [2024-05-12 10:48:22,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 391 transitions, 5482 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-05-12 10:48:22,997 INFO L231 Difference]: Finished difference. Result has 380 places, 358 transitions, 4495 flow [2024-05-12 10:48:22,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4266, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4495, PETRI_PLACES=380, PETRI_TRANSITIONS=358} [2024-05-12 10:48:22,998 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 337 predicate places. [2024-05-12 10:48:22,998 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 358 transitions, 4495 flow [2024-05-12 10:48:22,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:22,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:48:22,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:48:22,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-05-12 10:48:22,998 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:48:22,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:48:22,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1745670009, now seen corresponding path program 13 times [2024-05-12 10:48:22,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:48:22,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347080392] [2024-05-12 10:48:22,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:48:22,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:48:23,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15