./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe028_rmo.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe028_rmo.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe028_rmo.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe028_rmo.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 22:53:50,100 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:53:50,163 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:53:50,168 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:53:50,168 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:53:50,191 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:53:50,192 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:53:50,192 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:53:50,193 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:53:50,196 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:53:50,196 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:53:50,196 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:53:50,197 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:53:50,198 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:53:50,199 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:53:50,199 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:53:50,199 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:53:50,199 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:53:50,199 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:53:50,200 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:53:50,200 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:53:50,200 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:53:50,201 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:53:50,201 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:53:50,201 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:53:50,201 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:53:50,201 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:53:50,202 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:53:50,202 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:53:50,202 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:53:50,203 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:53:50,203 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:53:50,204 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:53:50,204 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:53:50,204 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:53:50,204 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:53:50,204 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:53:50,205 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:53:50,205 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:53:50,205 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:53:50,205 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:53:50,205 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:53:50,206 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:53:50,206 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:53:50,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:53:50,430 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:53:50,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:53:50,433 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:53:50,433 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:53:50,434 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe028_rmo.yml/witness.yml [2024-06-27 22:53:50,531 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:53:50,532 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:53:50,533 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe028_rmo.i [2024-06-27 22:53:51,558 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:53:51,757 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:53:51,757 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe028_rmo.i [2024-06-27 22:53:51,777 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f92845065/bace1e7cc38d49dbb1e0f8a8c0b80a45/FLAG53d62d717 [2024-06-27 22:53:51,787 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f92845065/bace1e7cc38d49dbb1e0f8a8c0b80a45 [2024-06-27 22:53:51,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:53:51,788 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:53:51,789 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:53:51,789 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:53:51,793 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:53:51,793 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:53:50" (1/2) ... [2024-06-27 22:53:51,795 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@684087f8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:53:51, skipping insertion in model container [2024-06-27 22:53:51,795 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:53:50" (1/2) ... [2024-06-27 22:53:51,796 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7b1f3859 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:53:51, skipping insertion in model container [2024-06-27 22:53:51,796 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:53:51" (2/2) ... [2024-06-27 22:53:51,798 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@684087f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:53:51, skipping insertion in model container [2024-06-27 22:53:51,798 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:53:51" (2/2) ... [2024-06-27 22:53:51,799 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:53:51,822 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:53:51,823 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$flush_delayed) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$mem_tmp) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff0_thd0) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff0_thd1) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff0_thd2) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff0_thd3) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff1_thd0) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff1_thd1) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff1_thd2) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff1_thd3) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$read_delayed) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$w_buff0) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$w_buff0_used) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$w_buff1) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$w_buff1_used) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$flush_delayed) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$mem_tmp) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff0_thd0) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff0_thd1) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff0_thd2) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff0_thd3) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff1_thd0) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff1_thd1) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff1_thd2) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff1_thd3) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$w_buff0) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$w_buff0_used) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$w_buff1) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$w_buff1_used) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$w_buff1_used >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )y >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )weak$$choice2 >= 0LL) && (long long )x - (long long )x$mem_tmp >= 0LL) [2024-06-27 22:53:51,823 INFO L97 edCorrectnessWitness]: Location invariant before [L857-L857] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$flush_delayed) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$mem_tmp) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff0_thd0) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff0_thd1) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff0_thd2) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff0_thd3) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff1_thd0) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff1_thd1) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff1_thd2) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff1_thd3) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$read_delayed) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$w_buff0) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$w_buff0_used) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$w_buff1) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$w_buff1_used) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$flush_delayed) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$mem_tmp) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff0_thd0) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff0_thd1) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff0_thd2) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff0_thd3) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff1_thd0) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff1_thd1) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff1_thd2) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff1_thd3) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$w_buff0) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$w_buff0_used) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$w_buff1) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$w_buff1_used) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$w_buff1_used >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )y >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )weak$$choice2 >= 0LL) && (long long )x - (long long )x$mem_tmp >= 0LL) [2024-06-27 22:53:51,823 INFO L97 edCorrectnessWitness]: Location invariant before [L854-L854] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$flush_delayed) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$mem_tmp) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff0_thd0) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff0_thd1) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff0_thd2) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff0_thd3) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff1_thd0) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff1_thd1) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff1_thd2) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff1_thd3) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$read_delayed) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$w_buff0) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$w_buff0_used) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$w_buff1) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$w_buff1_used) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$flush_delayed) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$mem_tmp) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff0_thd0) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff0_thd1) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff0_thd2) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff0_thd3) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff1_thd0) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff1_thd1) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff1_thd2) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff1_thd3) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$w_buff0) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$w_buff0_used) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$w_buff1) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$w_buff1_used) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$w_buff1_used >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )y >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )weak$$choice2 >= 0LL) && (long long )x - (long long )x$mem_tmp >= 0LL) [2024-06-27 22:53:51,823 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:53:51,823 INFO L106 edCorrectnessWitness]: ghost_update [L852-L852] multithreaded = 1; [2024-06-27 22:53:51,866 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:53:52,001 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe028_rmo.i[988,1001] [2024-06-27 22:53:52,158 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:53:52,167 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:53:52,202 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe028_rmo.i[988,1001] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:53:52,317 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:53:52,361 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:53:52,361 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:53:52 WrapperNode [2024-06-27 22:53:52,361 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:53:52,362 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:53:52,363 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:53:52,363 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:53:52,369 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:53:52" (1/1) ... [2024-06-27 22:53:52,396 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:53:52" (1/1) ... [2024-06-27 22:53:52,439 INFO L138 Inliner]: procedures = 175, calls = 72, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 161 [2024-06-27 22:53:52,440 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:53:52,440 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:53:52,440 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:53:52,440 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:53:52,449 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:53:52" (1/1) ... [2024-06-27 22:53:52,450 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:53:52" (1/1) ... [2024-06-27 22:53:52,474 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:53:52" (1/1) ... [2024-06-27 22:53:52,504 INFO L175 MemorySlicer]: Split 32 memory accesses to 2 slices as follows [2, 30]. 94 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 8 writes are split as follows [0, 8]. [2024-06-27 22:53:52,507 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:53:52" (1/1) ... [2024-06-27 22:53:52,507 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:53:52" (1/1) ... [2024-06-27 22:53:52,517 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:53:52" (1/1) ... [2024-06-27 22:53:52,530 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:53:52" (1/1) ... [2024-06-27 22:53:52,541 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:53:52" (1/1) ... [2024-06-27 22:53:52,543 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:53:52" (1/1) ... [2024-06-27 22:53:52,547 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:53:52,553 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:53:52,553 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:53:52,553 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:53:52,554 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:53:52" (1/1) ... [2024-06-27 22:53:52,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:53:52,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:53:52,578 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 22:53:52,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 22:53:52,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 22:53:52,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 22:53:52,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 22:53:52,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 22:53:52,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:53:52,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:53:52,607 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:53:52,607 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:53:52,608 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:53:52,608 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:53:52,608 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 22:53:52,608 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 22:53:52,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:53:52,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 22:53:52,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:53:52,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:53:52,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:53:52,612 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 22:53:52,853 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:53:52,870 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:53:53,319 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:53:53,320 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:53:53,634 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:53:53,634 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:53:53,635 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:53:53 BoogieIcfgContainer [2024-06-27 22:53:53,635 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:53:53,637 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:53:53,637 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:53:53,640 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:53:53,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:53:50" (1/4) ... [2024-06-27 22:53:53,641 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc1b9b9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:53:53, skipping insertion in model container [2024-06-27 22:53:53,641 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:53:51" (2/4) ... [2024-06-27 22:53:53,642 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc1b9b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:53:53, skipping insertion in model container [2024-06-27 22:53:53,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:53:52" (3/4) ... [2024-06-27 22:53:53,644 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc1b9b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:53:53, skipping insertion in model container [2024-06-27 22:53:53,644 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:53:53" (4/4) ... [2024-06-27 22:53:53,645 INFO L112 eAbstractionObserver]: Analyzing ICFG safe028_rmo.i [2024-06-27 22:53:53,662 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:53:53,662 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 22:53:53,662 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:53:53,724 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:53:53,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 106 flow [2024-06-27 22:53:53,789 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-06-27 22:53:53,789 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:53:53,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 59 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-06-27 22:53:53,792 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 106 flow [2024-06-27 22:53:53,795 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 41 transitions, 91 flow [2024-06-27 22:53:53,807 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:53:53,816 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;@7667fd30, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:53:53,816 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 22:53:53,820 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:53:53,820 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-27 22:53:53,820 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:53:53,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:53,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:53:53,822 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:53:53,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:53,826 INFO L85 PathProgramCache]: Analyzing trace with hash 663742397, now seen corresponding path program 1 times [2024-06-27 22:53:53,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:53,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844708480] [2024-06-27 22:53:53,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:53,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:54,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:55,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:53:55,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:55,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844708480] [2024-06-27 22:53:55,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844708480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:55,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:55,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:53:55,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216185292] [2024-06-27 22:53:55,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:55,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:53:55,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:55,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:53:55,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:53:55,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:53:55,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:53:55,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:55,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:53:55,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:56,397 INFO L124 PetriNetUnfolderBase]: 2790/4301 cut-off events. [2024-06-27 22:53:56,397 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-06-27 22:53:56,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8431 conditions, 4301 events. 2790/4301 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 23859 event pairs, 1538 based on Foata normal form. 0/4147 useless extension candidates. Maximal degree in co-relation 8419. Up to 4047 conditions per place. [2024-06-27 22:53:56,420 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 46 selfloop transitions, 4 changer transitions 0/59 dead transitions. [2024-06-27 22:53:56,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 59 transitions, 233 flow [2024-06-27 22:53:56,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:53:56,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:53:56,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2024-06-27 22:53:56,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6524822695035462 [2024-06-27 22:53:56,432 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 91 flow. Second operand 3 states and 92 transitions. [2024-06-27 22:53:56,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 59 transitions, 233 flow [2024-06-27 22:53:56,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 59 transitions, 228 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:53:56,440 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 118 flow [2024-06-27 22:53:56,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2024-06-27 22:53:56,445 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2024-06-27 22:53:56,445 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 118 flow [2024-06-27 22:53:56,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:53:56,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:56,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:53:56,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:53:56,447 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:53:56,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:56,448 INFO L85 PathProgramCache]: Analyzing trace with hash -2093241184, now seen corresponding path program 1 times [2024-06-27 22:53:56,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:56,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034698977] [2024-06-27 22:53:56,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:56,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:56,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:57,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:53:57,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:57,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034698977] [2024-06-27 22:53:57,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034698977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:57,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:57,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:53:57,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193703090] [2024-06-27 22:53:57,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:57,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:53:57,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:57,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:53:57,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:53:57,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:53:57,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:53:57,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:57,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:53:57,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:58,632 INFO L124 PetriNetUnfolderBase]: 3344/4877 cut-off events. [2024-06-27 22:53:58,633 INFO L125 PetriNetUnfolderBase]: For 743/743 co-relation queries the response was YES. [2024-06-27 22:53:58,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10804 conditions, 4877 events. 3344/4877 cut-off events. For 743/743 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 25700 event pairs, 1537 based on Foata normal form. 3/4879 useless extension candidates. Maximal degree in co-relation 10792. Up to 4792 conditions per place. [2024-06-27 22:53:58,656 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 62 selfloop transitions, 7 changer transitions 0/77 dead transitions. [2024-06-27 22:53:58,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 77 transitions, 334 flow [2024-06-27 22:53:58,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:53:58,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:53:58,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-06-27 22:53:58,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2024-06-27 22:53:58,660 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 118 flow. Second operand 4 states and 120 transitions. [2024-06-27 22:53:58,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 77 transitions, 334 flow [2024-06-27 22:53:58,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 77 transitions, 330 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:53:58,663 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 154 flow [2024-06-27 22:53:58,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2024-06-27 22:53:58,665 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 3 predicate places. [2024-06-27 22:53:58,666 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 154 flow [2024-06-27 22:53:58,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:53:58,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:58,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:53:58,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:53:58,671 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:53:58,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:58,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1560042529, now seen corresponding path program 1 times [2024-06-27 22:53:58,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:58,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176181261] [2024-06-27 22:53:58,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:58,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:58,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:00,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:00,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:00,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176181261] [2024-06-27 22:54:00,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176181261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:00,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:00,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:54:00,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659650130] [2024-06-27 22:54:00,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:00,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:54:00,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:00,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:54:00,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:54:00,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:54:00,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 154 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:00,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:00,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:54:00,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:01,771 INFO L124 PetriNetUnfolderBase]: 3337/4870 cut-off events. [2024-06-27 22:54:01,771 INFO L125 PetriNetUnfolderBase]: For 2089/2089 co-relation queries the response was YES. [2024-06-27 22:54:01,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11776 conditions, 4870 events. 3337/4870 cut-off events. For 2089/2089 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 25849 event pairs, 1209 based on Foata normal form. 4/4873 useless extension candidates. Maximal degree in co-relation 11762. Up to 4686 conditions per place. [2024-06-27 22:54:01,792 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 82 selfloop transitions, 14 changer transitions 0/104 dead transitions. [2024-06-27 22:54:01,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 104 transitions, 500 flow [2024-06-27 22:54:01,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:54:01,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:54:01,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 155 transitions. [2024-06-27 22:54:01,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6595744680851063 [2024-06-27 22:54:01,794 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 154 flow. Second operand 5 states and 155 transitions. [2024-06-27 22:54:01,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 104 transitions, 500 flow [2024-06-27 22:54:01,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 104 transitions, 486 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 22:54:01,797 INFO L231 Difference]: Finished difference. Result has 59 places, 56 transitions, 236 flow [2024-06-27 22:54:01,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=236, PETRI_PLACES=59, PETRI_TRANSITIONS=56} [2024-06-27 22:54:01,798 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 8 predicate places. [2024-06-27 22:54:01,798 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 56 transitions, 236 flow [2024-06-27 22:54:01,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:01,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:01,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:01,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:54:01,799 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:54:01,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:01,799 INFO L85 PathProgramCache]: Analyzing trace with hash 653367418, now seen corresponding path program 1 times [2024-06-27 22:54:01,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:01,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476112733] [2024-06-27 22:54:01,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:01,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:01,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:04,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:04,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:04,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476112733] [2024-06-27 22:54:04,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476112733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:04,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:04,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:54:04,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466625528] [2024-06-27 22:54:04,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:04,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:54:04,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:04,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:54:04,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:54:04,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:54:04,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 236 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:04,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:04,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:54:04,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:05,406 INFO L124 PetriNetUnfolderBase]: 3326/4853 cut-off events. [2024-06-27 22:54:05,407 INFO L125 PetriNetUnfolderBase]: For 4536/4536 co-relation queries the response was YES. [2024-06-27 22:54:05,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13369 conditions, 4853 events. 3326/4853 cut-off events. For 4536/4536 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 25816 event pairs, 827 based on Foata normal form. 8/4860 useless extension candidates. Maximal degree in co-relation 13352. Up to 4559 conditions per place. [2024-06-27 22:54:05,448 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 94 selfloop transitions, 16 changer transitions 0/118 dead transitions. [2024-06-27 22:54:05,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 118 transitions, 616 flow [2024-06-27 22:54:05,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:54:05,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:54:05,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 181 transitions. [2024-06-27 22:54:05,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6418439716312057 [2024-06-27 22:54:05,465 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 236 flow. Second operand 6 states and 181 transitions. [2024-06-27 22:54:05,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 118 transitions, 616 flow [2024-06-27 22:54:05,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 118 transitions, 616 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 22:54:05,470 INFO L231 Difference]: Finished difference. Result has 64 places, 57 transitions, 283 flow [2024-06-27 22:54:05,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=283, PETRI_PLACES=64, PETRI_TRANSITIONS=57} [2024-06-27 22:54:05,471 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 13 predicate places. [2024-06-27 22:54:05,471 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 57 transitions, 283 flow [2024-06-27 22:54:05,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:05,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:05,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:05,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:54:05,472 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:54:05,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:05,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1617164141, now seen corresponding path program 1 times [2024-06-27 22:54:05,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:05,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505094153] [2024-06-27 22:54:05,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:05,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:05,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:07,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:07,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:07,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505094153] [2024-06-27 22:54:07,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505094153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:07,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:07,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:54:07,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564000413] [2024-06-27 22:54:07,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:07,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:54:07,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:07,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:54:07,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:54:07,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:54:07,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 57 transitions, 283 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:07,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:07,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:54:07,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:08,586 INFO L124 PetriNetUnfolderBase]: 3223/4994 cut-off events. [2024-06-27 22:54:08,586 INFO L125 PetriNetUnfolderBase]: For 7329/7374 co-relation queries the response was YES. [2024-06-27 22:54:08,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13932 conditions, 4994 events. 3223/4994 cut-off events. For 7329/7374 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 28829 event pairs, 1806 based on Foata normal form. 4/4970 useless extension candidates. Maximal degree in co-relation 13911. Up to 4558 conditions per place. [2024-06-27 22:54:08,610 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 67 selfloop transitions, 14 changer transitions 0/93 dead transitions. [2024-06-27 22:54:08,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 93 transitions, 565 flow [2024-06-27 22:54:08,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:54:08,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:54:08,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-06-27 22:54:08,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5574468085106383 [2024-06-27 22:54:08,615 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 283 flow. Second operand 5 states and 131 transitions. [2024-06-27 22:54:08,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 93 transitions, 565 flow [2024-06-27 22:54:08,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 93 transitions, 530 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 22:54:08,618 INFO L231 Difference]: Finished difference. Result has 67 places, 66 transitions, 355 flow [2024-06-27 22:54:08,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=355, PETRI_PLACES=67, PETRI_TRANSITIONS=66} [2024-06-27 22:54:08,619 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 16 predicate places. [2024-06-27 22:54:08,619 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 66 transitions, 355 flow [2024-06-27 22:54:08,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:08,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:08,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:08,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:54:08,620 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:54:08,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:08,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1376088671, now seen corresponding path program 1 times [2024-06-27 22:54:08,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:08,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895632902] [2024-06-27 22:54:08,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:08,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:08,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:11,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:11,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:11,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895632902] [2024-06-27 22:54:11,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895632902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:11,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:11,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:54:11,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085004556] [2024-06-27 22:54:11,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:11,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:54:11,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:11,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:54:11,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:54:11,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:54:11,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 66 transitions, 355 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:11,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:11,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:54:11,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:12,631 INFO L124 PetriNetUnfolderBase]: 3218/4984 cut-off events. [2024-06-27 22:54:12,632 INFO L125 PetriNetUnfolderBase]: For 9103/9124 co-relation queries the response was YES. [2024-06-27 22:54:12,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15157 conditions, 4984 events. 3218/4984 cut-off events. For 9103/9124 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 28792 event pairs, 1796 based on Foata normal form. 4/4960 useless extension candidates. Maximal degree in co-relation 15131. Up to 4553 conditions per place. [2024-06-27 22:54:12,662 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 68 selfloop transitions, 12 changer transitions 0/92 dead transitions. [2024-06-27 22:54:12,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 92 transitions, 579 flow [2024-06-27 22:54:12,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:54:12,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:54:12,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-06-27 22:54:12,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5446808510638298 [2024-06-27 22:54:12,663 INFO L175 Difference]: Start difference. First operand has 67 places, 66 transitions, 355 flow. Second operand 5 states and 128 transitions. [2024-06-27 22:54:12,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 92 transitions, 579 flow [2024-06-27 22:54:12,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 92 transitions, 575 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-27 22:54:12,669 INFO L231 Difference]: Finished difference. Result has 72 places, 66 transitions, 387 flow [2024-06-27 22:54:12,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=387, PETRI_PLACES=72, PETRI_TRANSITIONS=66} [2024-06-27 22:54:12,670 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 21 predicate places. [2024-06-27 22:54:12,670 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 66 transitions, 387 flow [2024-06-27 22:54:12,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:12,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:12,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:12,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:54:12,671 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:54:12,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:12,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1029880370, now seen corresponding path program 1 times [2024-06-27 22:54:12,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:12,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3067478] [2024-06-27 22:54:12,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:12,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:12,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:14,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:14,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:14,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3067478] [2024-06-27 22:54:14,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3067478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:14,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:14,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:54:14,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113692631] [2024-06-27 22:54:14,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:14,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:54:14,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:14,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:54:14,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:54:14,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:54:14,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 66 transitions, 387 flow. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:14,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:14,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:54:14,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:15,721 INFO L124 PetriNetUnfolderBase]: 3454/5047 cut-off events. [2024-06-27 22:54:15,722 INFO L125 PetriNetUnfolderBase]: For 9977/9979 co-relation queries the response was YES. [2024-06-27 22:54:15,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16407 conditions, 5047 events. 3454/5047 cut-off events. For 9977/9979 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 26856 event pairs, 976 based on Foata normal form. 4/5050 useless extension candidates. Maximal degree in co-relation 16376. Up to 4731 conditions per place. [2024-06-27 22:54:15,748 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 104 selfloop transitions, 27 changer transitions 0/138 dead transitions. [2024-06-27 22:54:15,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 138 transitions, 920 flow [2024-06-27 22:54:15,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:54:15,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:54:15,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 177 transitions. [2024-06-27 22:54:15,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6276595744680851 [2024-06-27 22:54:15,750 INFO L175 Difference]: Start difference. First operand has 72 places, 66 transitions, 387 flow. Second operand 6 states and 177 transitions. [2024-06-27 22:54:15,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 138 transitions, 920 flow [2024-06-27 22:54:15,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 138 transitions, 903 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:54:15,758 INFO L231 Difference]: Finished difference. Result has 77 places, 82 transitions, 559 flow [2024-06-27 22:54:15,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=559, PETRI_PLACES=77, PETRI_TRANSITIONS=82} [2024-06-27 22:54:15,758 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 26 predicate places. [2024-06-27 22:54:15,759 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 82 transitions, 559 flow [2024-06-27 22:54:15,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:15,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:15,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:15,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:54:15,759 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:54:15,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:15,760 INFO L85 PathProgramCache]: Analyzing trace with hash -690059668, now seen corresponding path program 2 times [2024-06-27 22:54:15,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:15,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659740477] [2024-06-27 22:54:15,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:15,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:15,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:17,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:17,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:17,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659740477] [2024-06-27 22:54:17,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659740477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:17,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:17,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:54:17,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955925225] [2024-06-27 22:54:17,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:17,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:54:17,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:17,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:54:17,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:54:17,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:54:17,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 82 transitions, 559 flow. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:17,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:17,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:54:17,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:19,463 INFO L124 PetriNetUnfolderBase]: 3596/5263 cut-off events. [2024-06-27 22:54:19,464 INFO L125 PetriNetUnfolderBase]: For 15029/15033 co-relation queries the response was YES. [2024-06-27 22:54:19,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19332 conditions, 5263 events. 3596/5263 cut-off events. For 15029/15033 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 27841 event pairs, 985 based on Foata normal form. 5/5265 useless extension candidates. Maximal degree in co-relation 19299. Up to 4836 conditions per place. [2024-06-27 22:54:19,490 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 94 selfloop transitions, 41 changer transitions 0/142 dead transitions. [2024-06-27 22:54:19,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 142 transitions, 1168 flow [2024-06-27 22:54:19,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:54:19,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:54:19,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 160 transitions. [2024-06-27 22:54:19,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5673758865248227 [2024-06-27 22:54:19,492 INFO L175 Difference]: Start difference. First operand has 77 places, 82 transitions, 559 flow. Second operand 6 states and 160 transitions. [2024-06-27 22:54:19,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 142 transitions, 1168 flow [2024-06-27 22:54:19,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 142 transitions, 1102 flow, removed 24 selfloop flow, removed 2 redundant places. [2024-06-27 22:54:19,509 INFO L231 Difference]: Finished difference. Result has 82 places, 99 transitions, 777 flow [2024-06-27 22:54:19,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=777, PETRI_PLACES=82, PETRI_TRANSITIONS=99} [2024-06-27 22:54:19,510 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 31 predicate places. [2024-06-27 22:54:19,510 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 99 transitions, 777 flow [2024-06-27 22:54:19,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:19,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:19,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:19,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:54:19,511 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:54:19,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:19,511 INFO L85 PathProgramCache]: Analyzing trace with hash 290656952, now seen corresponding path program 3 times [2024-06-27 22:54:19,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:19,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329154394] [2024-06-27 22:54:19,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:19,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:19,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:21,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:21,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:21,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329154394] [2024-06-27 22:54:21,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329154394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:21,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:21,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:54:21,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777472086] [2024-06-27 22:54:21,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:21,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:54:21,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:21,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:54:21,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:54:21,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:54:21,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 99 transitions, 777 flow. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:21,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:21,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:54:21,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:22,995 INFO L124 PetriNetUnfolderBase]: 3596/5258 cut-off events. [2024-06-27 22:54:22,995 INFO L125 PetriNetUnfolderBase]: For 17639/17641 co-relation queries the response was YES. [2024-06-27 22:54:23,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20075 conditions, 5258 events. 3596/5258 cut-off events. For 17639/17641 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 27826 event pairs, 985 based on Foata normal form. 5/5259 useless extension candidates. Maximal degree in co-relation 20038. Up to 4837 conditions per place. [2024-06-27 22:54:23,028 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 87 selfloop transitions, 51 changer transitions 0/145 dead transitions. [2024-06-27 22:54:23,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 145 transitions, 1275 flow [2024-06-27 22:54:23,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:54:23,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:54:23,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-06-27 22:54:23,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.549645390070922 [2024-06-27 22:54:23,030 INFO L175 Difference]: Start difference. First operand has 82 places, 99 transitions, 777 flow. Second operand 6 states and 155 transitions. [2024-06-27 22:54:23,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 145 transitions, 1275 flow [2024-06-27 22:54:23,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 145 transitions, 1230 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-27 22:54:23,043 INFO L231 Difference]: Finished difference. Result has 87 places, 105 transitions, 915 flow [2024-06-27 22:54:23,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=915, PETRI_PLACES=87, PETRI_TRANSITIONS=105} [2024-06-27 22:54:23,044 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 36 predicate places. [2024-06-27 22:54:23,045 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 105 transitions, 915 flow [2024-06-27 22:54:23,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:23,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:23,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:23,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:54:23,048 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:54:23,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:23,048 INFO L85 PathProgramCache]: Analyzing trace with hash 290925350, now seen corresponding path program 1 times [2024-06-27 22:54:23,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:23,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131178103] [2024-06-27 22:54:23,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:23,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:23,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:26,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:26,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:26,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131178103] [2024-06-27 22:54:26,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131178103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:26,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:26,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:54:26,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900322530] [2024-06-27 22:54:26,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:26,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:54:26,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:26,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:54:26,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:54:26,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:54:26,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 105 transitions, 915 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:26,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:26,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:54:26,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:27,898 INFO L124 PetriNetUnfolderBase]: 3482/5372 cut-off events. [2024-06-27 22:54:27,898 INFO L125 PetriNetUnfolderBase]: For 22429/22462 co-relation queries the response was YES. [2024-06-27 22:54:27,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20435 conditions, 5372 events. 3482/5372 cut-off events. For 22429/22462 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 30670 event pairs, 1691 based on Foata normal form. 6/5346 useless extension candidates. Maximal degree in co-relation 20394. Up to 4871 conditions per place. [2024-06-27 22:54:27,927 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 119 selfloop transitions, 14 changer transitions 0/145 dead transitions. [2024-06-27 22:54:27,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 145 transitions, 1327 flow [2024-06-27 22:54:27,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:54:27,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:54:27,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-27 22:54:27,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045592705167173 [2024-06-27 22:54:27,928 INFO L175 Difference]: Start difference. First operand has 87 places, 105 transitions, 915 flow. Second operand 7 states and 166 transitions. [2024-06-27 22:54:27,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 145 transitions, 1327 flow [2024-06-27 22:54:27,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 145 transitions, 1264 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-06-27 22:54:27,944 INFO L231 Difference]: Finished difference. Result has 92 places, 107 transitions, 909 flow [2024-06-27 22:54:27,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=909, PETRI_PLACES=92, PETRI_TRANSITIONS=107} [2024-06-27 22:54:27,945 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 41 predicate places. [2024-06-27 22:54:27,945 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 107 transitions, 909 flow [2024-06-27 22:54:27,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:27,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:27,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:27,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:54:27,946 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:54:27,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:27,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1861521558, now seen corresponding path program 1 times [2024-06-27 22:54:27,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:27,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644243532] [2024-06-27 22:54:27,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:27,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:27,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:30,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:30,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:30,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644243532] [2024-06-27 22:54:30,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644243532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:30,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:30,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:54:30,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044247469] [2024-06-27 22:54:30,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:30,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:54:30,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:30,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:54:30,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:54:30,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:54:30,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 107 transitions, 909 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:30,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:30,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:54:30,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:31,928 INFO L124 PetriNetUnfolderBase]: 3618/5293 cut-off events. [2024-06-27 22:54:31,929 INFO L125 PetriNetUnfolderBase]: For 24493/24497 co-relation queries the response was YES. [2024-06-27 22:54:31,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21204 conditions, 5293 events. 3618/5293 cut-off events. For 24493/24497 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 28213 event pairs, 959 based on Foata normal form. 7/5299 useless extension candidates. Maximal degree in co-relation 21161. Up to 4854 conditions per place. [2024-06-27 22:54:31,962 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 118 selfloop transitions, 46 changer transitions 0/171 dead transitions. [2024-06-27 22:54:31,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 171 transitions, 1575 flow [2024-06-27 22:54:31,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:54:31,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:54:31,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-06-27 22:54:31,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-06-27 22:54:31,965 INFO L175 Difference]: Start difference. First operand has 92 places, 107 transitions, 909 flow. Second operand 7 states and 188 transitions. [2024-06-27 22:54:31,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 171 transitions, 1575 flow [2024-06-27 22:54:31,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 171 transitions, 1528 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 22:54:31,985 INFO L231 Difference]: Finished difference. Result has 94 places, 110 transitions, 1002 flow [2024-06-27 22:54:31,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=862, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1002, PETRI_PLACES=94, PETRI_TRANSITIONS=110} [2024-06-27 22:54:31,986 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 43 predicate places. [2024-06-27 22:54:31,986 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 110 transitions, 1002 flow [2024-06-27 22:54:31,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:31,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:31,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:31,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:54:31,986 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:54:31,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:31,987 INFO L85 PathProgramCache]: Analyzing trace with hash -5180438, now seen corresponding path program 2 times [2024-06-27 22:54:31,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:31,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086695685] [2024-06-27 22:54:31,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:31,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:32,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:34,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:34,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:34,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086695685] [2024-06-27 22:54:34,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086695685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:34,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:34,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:54:34,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184957921] [2024-06-27 22:54:34,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:34,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:54:34,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:34,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:54:34,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:54:34,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:54:34,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 110 transitions, 1002 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:34,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:34,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:54:34,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:36,275 INFO L124 PetriNetUnfolderBase]: 3692/5406 cut-off events. [2024-06-27 22:54:36,276 INFO L125 PetriNetUnfolderBase]: For 28430/28436 co-relation queries the response was YES. [2024-06-27 22:54:36,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22244 conditions, 5406 events. 3692/5406 cut-off events. For 28430/28436 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 28631 event pairs, 995 based on Foata normal form. 7/5410 useless extension candidates. Maximal degree in co-relation 22201. Up to 4926 conditions per place. [2024-06-27 22:54:36,312 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 102 selfloop transitions, 50 changer transitions 0/159 dead transitions. [2024-06-27 22:54:36,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 159 transitions, 1590 flow [2024-06-27 22:54:36,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:54:36,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:54:36,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-06-27 22:54:36,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5638297872340425 [2024-06-27 22:54:36,313 INFO L175 Difference]: Start difference. First operand has 94 places, 110 transitions, 1002 flow. Second operand 6 states and 159 transitions. [2024-06-27 22:54:36,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 159 transitions, 1590 flow [2024-06-27 22:54:36,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 159 transitions, 1499 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-27 22:54:36,334 INFO L231 Difference]: Finished difference. Result has 96 places, 116 transitions, 1112 flow [2024-06-27 22:54:36,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=922, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1112, PETRI_PLACES=96, PETRI_TRANSITIONS=116} [2024-06-27 22:54:36,334 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 45 predicate places. [2024-06-27 22:54:36,335 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 116 transitions, 1112 flow [2024-06-27 22:54:36,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:36,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:36,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:36,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:54:36,335 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:54:36,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:36,336 INFO L85 PathProgramCache]: Analyzing trace with hash 420432080, now seen corresponding path program 3 times [2024-06-27 22:54:36,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:36,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606384690] [2024-06-27 22:54:36,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:36,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:36,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:39,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:39,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:39,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606384690] [2024-06-27 22:54:39,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606384690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:39,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:39,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:54:39,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705033379] [2024-06-27 22:54:39,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:39,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:54:39,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:39,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:54:39,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:54:39,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:54:39,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 116 transitions, 1112 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:39,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:39,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:54:39,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:40,469 INFO L124 PetriNetUnfolderBase]: 3684/5378 cut-off events. [2024-06-27 22:54:40,469 INFO L125 PetriNetUnfolderBase]: For 30116/30116 co-relation queries the response was YES. [2024-06-27 22:54:40,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22360 conditions, 5378 events. 3684/5378 cut-off events. For 30116/30116 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 28394 event pairs, 964 based on Foata normal form. 3/5377 useless extension candidates. Maximal degree in co-relation 22315. Up to 4918 conditions per place. [2024-06-27 22:54:40,497 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 99 selfloop transitions, 51 changer transitions 0/157 dead transitions. [2024-06-27 22:54:40,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 157 transitions, 1572 flow [2024-06-27 22:54:40,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:54:40,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:54:40,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-06-27 22:54:40,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5425531914893617 [2024-06-27 22:54:40,499 INFO L175 Difference]: Start difference. First operand has 96 places, 116 transitions, 1112 flow. Second operand 6 states and 153 transitions. [2024-06-27 22:54:40,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 157 transitions, 1572 flow [2024-06-27 22:54:40,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 157 transitions, 1486 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-27 22:54:40,518 INFO L231 Difference]: Finished difference. Result has 99 places, 116 transitions, 1146 flow [2024-06-27 22:54:40,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1026, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1146, PETRI_PLACES=99, PETRI_TRANSITIONS=116} [2024-06-27 22:54:40,518 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 48 predicate places. [2024-06-27 22:54:40,519 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 116 transitions, 1146 flow [2024-06-27 22:54:40,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:40,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:40,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:40,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:54:40,519 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:54:40,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:40,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1637177203, now seen corresponding path program 1 times [2024-06-27 22:54:40,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:40,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297918131] [2024-06-27 22:54:40,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:40,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:40,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:43,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:43,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:43,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297918131] [2024-06-27 22:54:43,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297918131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:43,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:43,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:54:43,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182781856] [2024-06-27 22:54:43,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:43,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:54:43,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:43,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:54:43,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:54:43,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:54:43,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 116 transitions, 1146 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:43,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:43,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:54:43,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:44,808 INFO L124 PetriNetUnfolderBase]: 3936/5772 cut-off events. [2024-06-27 22:54:44,809 INFO L125 PetriNetUnfolderBase]: For 33992/33992 co-relation queries the response was YES. [2024-06-27 22:54:44,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24128 conditions, 5772 events. 3936/5772 cut-off events. For 33992/33992 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 31499 event pairs, 768 based on Foata normal form. 6/5777 useless extension candidates. Maximal degree in co-relation 24080. Up to 5297 conditions per place. [2024-06-27 22:54:44,847 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 160 selfloop transitions, 37 changer transitions 0/204 dead transitions. [2024-06-27 22:54:44,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 204 transitions, 1988 flow [2024-06-27 22:54:44,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:54:44,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:54:44,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 216 transitions. [2024-06-27 22:54:44,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.574468085106383 [2024-06-27 22:54:44,849 INFO L175 Difference]: Start difference. First operand has 99 places, 116 transitions, 1146 flow. Second operand 8 states and 216 transitions. [2024-06-27 22:54:44,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 204 transitions, 1988 flow [2024-06-27 22:54:44,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 204 transitions, 1930 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-27 22:54:44,879 INFO L231 Difference]: Finished difference. Result has 107 places, 134 transitions, 1340 flow [2024-06-27 22:54:44,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1088, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1340, PETRI_PLACES=107, PETRI_TRANSITIONS=134} [2024-06-27 22:54:44,879 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 56 predicate places. [2024-06-27 22:54:44,880 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 134 transitions, 1340 flow [2024-06-27 22:54:44,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:44,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:44,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:44,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:54:44,880 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:54:44,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:44,881 INFO L85 PathProgramCache]: Analyzing trace with hash -295357589, now seen corresponding path program 2 times [2024-06-27 22:54:44,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:44,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899064512] [2024-06-27 22:54:44,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:44,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:44,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:47,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:47,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:47,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899064512] [2024-06-27 22:54:47,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899064512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:47,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:47,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:54:47,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246822358] [2024-06-27 22:54:47,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:47,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:54:47,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:47,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:54:47,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:54:47,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:54:47,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 134 transitions, 1340 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:47,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:47,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:54:47,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:49,223 INFO L124 PetriNetUnfolderBase]: 4388/6408 cut-off events. [2024-06-27 22:54:49,224 INFO L125 PetriNetUnfolderBase]: For 43476/43480 co-relation queries the response was YES. [2024-06-27 22:54:49,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28615 conditions, 6408 events. 4388/6408 cut-off events. For 43476/43480 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 35382 event pairs, 843 based on Foata normal form. 10/6417 useless extension candidates. Maximal degree in co-relation 28563. Up to 4755 conditions per place. [2024-06-27 22:54:49,273 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 167 selfloop transitions, 60 changer transitions 0/234 dead transitions. [2024-06-27 22:54:49,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 234 transitions, 2472 flow [2024-06-27 22:54:49,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:54:49,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:54:49,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 214 transitions. [2024-06-27 22:54:49,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6504559270516718 [2024-06-27 22:54:49,275 INFO L175 Difference]: Start difference. First operand has 107 places, 134 transitions, 1340 flow. Second operand 7 states and 214 transitions. [2024-06-27 22:54:49,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 234 transitions, 2472 flow [2024-06-27 22:54:49,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 234 transitions, 2418 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-27 22:54:49,311 INFO L231 Difference]: Finished difference. Result has 114 places, 152 transitions, 1609 flow [2024-06-27 22:54:49,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1286, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1609, PETRI_PLACES=114, PETRI_TRANSITIONS=152} [2024-06-27 22:54:49,312 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 63 predicate places. [2024-06-27 22:54:49,312 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 152 transitions, 1609 flow [2024-06-27 22:54:49,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:49,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:49,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:49,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:54:49,312 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:54:49,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:49,313 INFO L85 PathProgramCache]: Analyzing trace with hash 209276267, now seen corresponding path program 3 times [2024-06-27 22:54:49,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:49,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493885437] [2024-06-27 22:54:49,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:49,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:49,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:51,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:51,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:51,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493885437] [2024-06-27 22:54:51,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493885437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:51,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:51,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:54:51,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646690001] [2024-06-27 22:54:51,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:51,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:54:51,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:51,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:54:51,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:54:51,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:54:51,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 152 transitions, 1609 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:51,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:51,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:54:51,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:53,081 INFO L124 PetriNetUnfolderBase]: 5109/7443 cut-off events. [2024-06-27 22:54:53,082 INFO L125 PetriNetUnfolderBase]: For 58331/58331 co-relation queries the response was YES. [2024-06-27 22:54:53,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36643 conditions, 7443 events. 5109/7443 cut-off events. For 58331/58331 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 41349 event pairs, 786 based on Foata normal form. 3/7445 useless extension candidates. Maximal degree in co-relation 36588. Up to 6392 conditions per place. [2024-06-27 22:54:53,145 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 203 selfloop transitions, 85 changer transitions 0/295 dead transitions. [2024-06-27 22:54:53,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 295 transitions, 3231 flow [2024-06-27 22:54:53,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:54:53,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:54:53,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 278 transitions. [2024-06-27 22:54:53,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5914893617021276 [2024-06-27 22:54:53,147 INFO L175 Difference]: Start difference. First operand has 114 places, 152 transitions, 1609 flow. Second operand 10 states and 278 transitions. [2024-06-27 22:54:53,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 295 transitions, 3231 flow [2024-06-27 22:54:53,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 295 transitions, 3176 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-06-27 22:54:53,213 INFO L231 Difference]: Finished difference. Result has 127 places, 200 transitions, 2339 flow [2024-06-27 22:54:53,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1566, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2339, PETRI_PLACES=127, PETRI_TRANSITIONS=200} [2024-06-27 22:54:53,214 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 76 predicate places. [2024-06-27 22:54:53,214 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 200 transitions, 2339 flow [2024-06-27 22:54:53,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:53,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:53,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:53,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:54:53,215 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:54:53,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:53,215 INFO L85 PathProgramCache]: Analyzing trace with hash 899322671, now seen corresponding path program 1 times [2024-06-27 22:54:53,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:53,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334567266] [2024-06-27 22:54:53,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:53,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:53,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:56,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:56,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:56,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334567266] [2024-06-27 22:54:56,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334567266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:56,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:56,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:54:56,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586271677] [2024-06-27 22:54:56,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:56,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:54:56,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:56,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:54:56,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:54:56,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:54:56,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 200 transitions, 2339 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:56,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:56,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:54:56,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:58,355 INFO L124 PetriNetUnfolderBase]: 5159/7549 cut-off events. [2024-06-27 22:54:58,355 INFO L125 PetriNetUnfolderBase]: For 77684/77688 co-relation queries the response was YES. [2024-06-27 22:54:58,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41196 conditions, 7549 events. 5159/7549 cut-off events. For 77684/77688 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 41951 event pairs, 1047 based on Foata normal form. 8/7556 useless extension candidates. Maximal degree in co-relation 41134. Up to 6879 conditions per place. [2024-06-27 22:54:58,413 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 209 selfloop transitions, 56 changer transitions 0/272 dead transitions. [2024-06-27 22:54:58,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 272 transitions, 3261 flow [2024-06-27 22:54:58,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:54:58,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:54:58,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-27 22:54:58,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5585106382978723 [2024-06-27 22:54:58,415 INFO L175 Difference]: Start difference. First operand has 127 places, 200 transitions, 2339 flow. Second operand 8 states and 210 transitions. [2024-06-27 22:54:58,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 272 transitions, 3261 flow [2024-06-27 22:54:58,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 272 transitions, 3132 flow, removed 48 selfloop flow, removed 3 redundant places. [2024-06-27 22:54:58,480 INFO L231 Difference]: Finished difference. Result has 132 places, 202 transitions, 2366 flow [2024-06-27 22:54:58,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2212, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2366, PETRI_PLACES=132, PETRI_TRANSITIONS=202} [2024-06-27 22:54:58,481 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 81 predicate places. [2024-06-27 22:54:58,481 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 202 transitions, 2366 flow [2024-06-27 22:54:58,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:58,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:58,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:58,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:54:58,482 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:54:58,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:58,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1727108757, now seen corresponding path program 4 times [2024-06-27 22:54:58,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:58,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573941082] [2024-06-27 22:54:58,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:58,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:58,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:01,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:01,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:01,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573941082] [2024-06-27 22:55:01,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573941082] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:01,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:01,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:55:01,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915922959] [2024-06-27 22:55:01,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:01,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:55:01,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:01,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:55:01,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:55:01,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:55:01,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 202 transitions, 2366 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:01,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:01,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:55:01,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:03,492 INFO L124 PetriNetUnfolderBase]: 5642/8229 cut-off events. [2024-06-27 22:55:03,492 INFO L125 PetriNetUnfolderBase]: For 87829/87829 co-relation queries the response was YES. [2024-06-27 22:55:03,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45365 conditions, 8229 events. 5642/8229 cut-off events. For 87829/87829 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 46083 event pairs, 925 based on Foata normal form. 10/8234 useless extension candidates. Maximal degree in co-relation 45302. Up to 7210 conditions per place. [2024-06-27 22:55:03,566 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 212 selfloop transitions, 80 changer transitions 0/299 dead transitions. [2024-06-27 22:55:03,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 299 transitions, 3759 flow [2024-06-27 22:55:03,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:55:03,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:55:03,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-27 22:55:03,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5292553191489362 [2024-06-27 22:55:03,570 INFO L175 Difference]: Start difference. First operand has 132 places, 202 transitions, 2366 flow. Second operand 8 states and 199 transitions. [2024-06-27 22:55:03,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 299 transitions, 3759 flow [2024-06-27 22:55:03,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 299 transitions, 3629 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 22:55:03,676 INFO L231 Difference]: Finished difference. Result has 135 places, 239 transitions, 2917 flow [2024-06-27 22:55:03,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2236, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2917, PETRI_PLACES=135, PETRI_TRANSITIONS=239} [2024-06-27 22:55:03,677 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 84 predicate places. [2024-06-27 22:55:03,677 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 239 transitions, 2917 flow [2024-06-27 22:55:03,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:03,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:03,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:03,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:55:03,677 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:55:03,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:03,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1726988787, now seen corresponding path program 5 times [2024-06-27 22:55:03,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:03,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278631975] [2024-06-27 22:55:03,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:03,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:03,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:06,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:06,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:06,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278631975] [2024-06-27 22:55:06,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278631975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:06,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:06,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:55:06,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396532779] [2024-06-27 22:55:06,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:06,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:55:06,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:06,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:55:06,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:55:06,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:55:06,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 239 transitions, 2917 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:06,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:06,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:55:06,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:08,705 INFO L124 PetriNetUnfolderBase]: 6377/9337 cut-off events. [2024-06-27 22:55:08,706 INFO L125 PetriNetUnfolderBase]: For 107539/107545 co-relation queries the response was YES. [2024-06-27 22:55:08,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53459 conditions, 9337 events. 6377/9337 cut-off events. For 107539/107545 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 54183 event pairs, 1165 based on Foata normal form. 14/9346 useless extension candidates. Maximal degree in co-relation 53394. Up to 6060 conditions per place. [2024-06-27 22:55:08,783 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 189 selfloop transitions, 139 changer transitions 0/335 dead transitions. [2024-06-27 22:55:08,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 335 transitions, 4472 flow [2024-06-27 22:55:08,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:55:08,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:55:08,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 196 transitions. [2024-06-27 22:55:08,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5957446808510638 [2024-06-27 22:55:08,784 INFO L175 Difference]: Start difference. First operand has 135 places, 239 transitions, 2917 flow. Second operand 7 states and 196 transitions. [2024-06-27 22:55:08,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 335 transitions, 4472 flow [2024-06-27 22:55:08,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 335 transitions, 4348 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-27 22:55:08,917 INFO L231 Difference]: Finished difference. Result has 140 places, 267 transitions, 3478 flow [2024-06-27 22:55:08,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2793, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3478, PETRI_PLACES=140, PETRI_TRANSITIONS=267} [2024-06-27 22:55:08,918 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 89 predicate places. [2024-06-27 22:55:08,918 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 267 transitions, 3478 flow [2024-06-27 22:55:08,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:08,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:08,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:08,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:55:08,918 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:55:08,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:08,919 INFO L85 PathProgramCache]: Analyzing trace with hash 148486839, now seen corresponding path program 6 times [2024-06-27 22:55:08,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:08,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104526393] [2024-06-27 22:55:08,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:08,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:11,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:11,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:11,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104526393] [2024-06-27 22:55:11,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104526393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:11,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:11,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:55:11,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105144770] [2024-06-27 22:55:11,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:11,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:55:11,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:11,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:55:11,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:55:11,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:55:11,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 267 transitions, 3478 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:11,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:11,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:55:11,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:14,440 INFO L124 PetriNetUnfolderBase]: 6357/9269 cut-off events. [2024-06-27 22:55:14,441 INFO L125 PetriNetUnfolderBase]: For 120714/120714 co-relation queries the response was YES. [2024-06-27 22:55:14,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55621 conditions, 9269 events. 6357/9269 cut-off events. For 120714/120714 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 53163 event pairs, 987 based on Foata normal form. 10/9271 useless extension candidates. Maximal degree in co-relation 55553. Up to 6051 conditions per place. [2024-06-27 22:55:14,522 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 184 selfloop transitions, 141 changer transitions 0/332 dead transitions. [2024-06-27 22:55:14,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 332 transitions, 4713 flow [2024-06-27 22:55:14,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:55:14,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:55:14,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2024-06-27 22:55:14,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5775075987841946 [2024-06-27 22:55:14,524 INFO L175 Difference]: Start difference. First operand has 140 places, 267 transitions, 3478 flow. Second operand 7 states and 190 transitions. [2024-06-27 22:55:14,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 332 transitions, 4713 flow [2024-06-27 22:55:14,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 332 transitions, 4586 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-27 22:55:14,656 INFO L231 Difference]: Finished difference. Result has 146 places, 272 transitions, 3734 flow [2024-06-27 22:55:14,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3355, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3734, PETRI_PLACES=146, PETRI_TRANSITIONS=272} [2024-06-27 22:55:14,657 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 95 predicate places. [2024-06-27 22:55:14,657 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 272 transitions, 3734 flow [2024-06-27 22:55:14,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:14,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:14,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:14,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:55:14,658 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:55:14,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:14,658 INFO L85 PathProgramCache]: Analyzing trace with hash -2051139645, now seen corresponding path program 2 times [2024-06-27 22:55:14,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:14,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647770060] [2024-06-27 22:55:14,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:14,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:14,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:18,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:18,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:18,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647770060] [2024-06-27 22:55:18,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647770060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:18,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:18,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:55:18,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647802003] [2024-06-27 22:55:18,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:18,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:55:18,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:18,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:55:18,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:55:18,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:55:18,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 272 transitions, 3734 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:18,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:18,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:55:18,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:20,533 INFO L124 PetriNetUnfolderBase]: 6451/9454 cut-off events. [2024-06-27 22:55:20,534 INFO L125 PetriNetUnfolderBase]: For 137829/137835 co-relation queries the response was YES. [2024-06-27 22:55:20,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57298 conditions, 9454 events. 6451/9454 cut-off events. For 137829/137835 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 54471 event pairs, 1191 based on Foata normal form. 8/9459 useless extension candidates. Maximal degree in co-relation 57226. Up to 8607 conditions per place. [2024-06-27 22:55:20,622 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 268 selfloop transitions, 54 changer transitions 0/329 dead transitions. [2024-06-27 22:55:20,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 329 transitions, 4694 flow [2024-06-27 22:55:20,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:55:20,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:55:20,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-27 22:55:20,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5132978723404256 [2024-06-27 22:55:20,624 INFO L175 Difference]: Start difference. First operand has 146 places, 272 transitions, 3734 flow. Second operand 8 states and 193 transitions. [2024-06-27 22:55:20,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 329 transitions, 4694 flow [2024-06-27 22:55:20,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 329 transitions, 4498 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-27 22:55:20,820 INFO L231 Difference]: Finished difference. Result has 150 places, 276 transitions, 3715 flow [2024-06-27 22:55:20,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3538, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3715, PETRI_PLACES=150, PETRI_TRANSITIONS=276} [2024-06-27 22:55:20,821 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 99 predicate places. [2024-06-27 22:55:20,821 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 276 transitions, 3715 flow [2024-06-27 22:55:20,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:20,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:20,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:20,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:55:20,822 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:55:20,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:20,822 INFO L85 PathProgramCache]: Analyzing trace with hash -599558227, now seen corresponding path program 3 times [2024-06-27 22:55:20,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:20,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029643482] [2024-06-27 22:55:20,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:20,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:20,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:24,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:24,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:24,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029643482] [2024-06-27 22:55:24,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029643482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:24,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:24,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:55:24,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152770279] [2024-06-27 22:55:24,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:24,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:55:24,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:24,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:55:24,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:55:24,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:55:24,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 276 transitions, 3715 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:24,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:24,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:55:24,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:26,703 INFO L124 PetriNetUnfolderBase]: 6501/9523 cut-off events. [2024-06-27 22:55:26,704 INFO L125 PetriNetUnfolderBase]: For 144833/144833 co-relation queries the response was YES. [2024-06-27 22:55:26,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56834 conditions, 9523 events. 6501/9523 cut-off events. For 144833/144833 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 54911 event pairs, 1173 based on Foata normal form. 4/9523 useless extension candidates. Maximal degree in co-relation 56761. Up to 8719 conditions per place. [2024-06-27 22:55:26,789 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 269 selfloop transitions, 53 changer transitions 0/329 dead transitions. [2024-06-27 22:55:26,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 329 transitions, 4661 flow [2024-06-27 22:55:26,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:55:26,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:55:26,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-27 22:55:26,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026595744680851 [2024-06-27 22:55:26,791 INFO L175 Difference]: Start difference. First operand has 150 places, 276 transitions, 3715 flow. Second operand 8 states and 189 transitions. [2024-06-27 22:55:26,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 329 transitions, 4661 flow [2024-06-27 22:55:27,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 329 transitions, 4519 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 22:55:27,022 INFO L231 Difference]: Finished difference. Result has 152 places, 278 transitions, 3733 flow [2024-06-27 22:55:27,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3573, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3733, PETRI_PLACES=152, PETRI_TRANSITIONS=278} [2024-06-27 22:55:27,022 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 101 predicate places. [2024-06-27 22:55:27,022 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 278 transitions, 3733 flow [2024-06-27 22:55:27,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:27,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:27,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:27,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:55:27,023 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:55:27,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:27,023 INFO L85 PathProgramCache]: Analyzing trace with hash 397520011, now seen corresponding path program 4 times [2024-06-27 22:55:27,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:27,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961184791] [2024-06-27 22:55:27,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:27,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:27,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:30,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:30,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:30,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961184791] [2024-06-27 22:55:30,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961184791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:30,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:30,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:55:30,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317989053] [2024-06-27 22:55:30,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:30,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:55:30,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:30,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:55:30,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:55:30,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:55:30,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 278 transitions, 3733 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:30,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:30,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:55:30,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:33,126 INFO L124 PetriNetUnfolderBase]: 6493/9515 cut-off events. [2024-06-27 22:55:33,126 INFO L125 PetriNetUnfolderBase]: For 151080/151080 co-relation queries the response was YES. [2024-06-27 22:55:33,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57086 conditions, 9515 events. 6493/9515 cut-off events. For 151080/151080 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 54777 event pairs, 1075 based on Foata normal form. 4/9515 useless extension candidates. Maximal degree in co-relation 57013. Up to 8463 conditions per place. [2024-06-27 22:55:33,225 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 262 selfloop transitions, 61 changer transitions 0/330 dead transitions. [2024-06-27 22:55:33,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 330 transitions, 4665 flow [2024-06-27 22:55:33,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:55:33,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:55:33,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-27 22:55:33,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026595744680851 [2024-06-27 22:55:33,227 INFO L175 Difference]: Start difference. First operand has 152 places, 278 transitions, 3733 flow. Second operand 8 states and 189 transitions. [2024-06-27 22:55:33,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 330 transitions, 4665 flow [2024-06-27 22:55:33,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 330 transitions, 4527 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 22:55:33,485 INFO L231 Difference]: Finished difference. Result has 154 places, 280 transitions, 3774 flow [2024-06-27 22:55:33,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3595, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3774, PETRI_PLACES=154, PETRI_TRANSITIONS=280} [2024-06-27 22:55:33,486 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 103 predicate places. [2024-06-27 22:55:33,486 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 280 transitions, 3774 flow [2024-06-27 22:55:33,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:33,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:33,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:33,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:55:33,486 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:55:33,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:33,487 INFO L85 PathProgramCache]: Analyzing trace with hash 640593165, now seen corresponding path program 1 times [2024-06-27 22:55:33,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:33,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375804974] [2024-06-27 22:55:33,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:33,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:33,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:35,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:35,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:35,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375804974] [2024-06-27 22:55:35,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375804974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:35,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:35,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:55:35,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873678716] [2024-06-27 22:55:35,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:35,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:55:35,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:35,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:55:35,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:55:35,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:55:35,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 280 transitions, 3774 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:35,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:35,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:55:35,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:37,704 INFO L124 PetriNetUnfolderBase]: 6125/9408 cut-off events. [2024-06-27 22:55:37,705 INFO L125 PetriNetUnfolderBase]: For 162052/162222 co-relation queries the response was YES. [2024-06-27 22:55:37,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54860 conditions, 9408 events. 6125/9408 cut-off events. For 162052/162222 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 58233 event pairs, 2167 based on Foata normal form. 7/9337 useless extension candidates. Maximal degree in co-relation 54787. Up to 8369 conditions per place. [2024-06-27 22:55:37,798 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 238 selfloop transitions, 12 changer transitions 0/305 dead transitions. [2024-06-27 22:55:37,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 305 transitions, 4394 flow [2024-06-27 22:55:37,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:55:37,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:55:37,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-06-27 22:55:37,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234042553191489 [2024-06-27 22:55:37,800 INFO L175 Difference]: Start difference. First operand has 154 places, 280 transitions, 3774 flow. Second operand 5 states and 123 transitions. [2024-06-27 22:55:37,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 305 transitions, 4394 flow [2024-06-27 22:55:38,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 305 transitions, 4235 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-27 22:55:38,013 INFO L231 Difference]: Finished difference. Result has 153 places, 283 transitions, 3677 flow [2024-06-27 22:55:38,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3615, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3677, PETRI_PLACES=153, PETRI_TRANSITIONS=283} [2024-06-27 22:55:38,014 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 102 predicate places. [2024-06-27 22:55:38,014 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 283 transitions, 3677 flow [2024-06-27 22:55:38,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:38,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:38,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:38,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:55:38,015 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:55:38,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:38,015 INFO L85 PathProgramCache]: Analyzing trace with hash 604161143, now seen corresponding path program 1 times [2024-06-27 22:55:38,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:38,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677999365] [2024-06-27 22:55:38,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:38,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:38,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:40,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:40,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:40,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677999365] [2024-06-27 22:55:40,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677999365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:40,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:40,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:55:40,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150542387] [2024-06-27 22:55:40,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:40,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:55:40,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:40,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:55:40,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:55:40,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:55:40,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 283 transitions, 3677 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:40,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:40,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:55:40,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:43,018 INFO L124 PetriNetUnfolderBase]: 6704/9813 cut-off events. [2024-06-27 22:55:43,019 INFO L125 PetriNetUnfolderBase]: For 157109/157109 co-relation queries the response was YES. [2024-06-27 22:55:43,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59248 conditions, 9813 events. 6704/9813 cut-off events. For 157109/157109 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 57011 event pairs, 861 based on Foata normal form. 3/9815 useless extension candidates. Maximal degree in co-relation 59173. Up to 8300 conditions per place. [2024-06-27 22:55:43,113 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 267 selfloop transitions, 133 changer transitions 0/407 dead transitions. [2024-06-27 22:55:43,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 407 transitions, 5427 flow [2024-06-27 22:55:43,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:55:43,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:55:43,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 266 transitions. [2024-06-27 22:55:43,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5659574468085107 [2024-06-27 22:55:43,116 INFO L175 Difference]: Start difference. First operand has 153 places, 283 transitions, 3677 flow. Second operand 10 states and 266 transitions. [2024-06-27 22:55:43,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 407 transitions, 5427 flow [2024-06-27 22:55:43,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 407 transitions, 5387 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-06-27 22:55:43,395 INFO L231 Difference]: Finished difference. Result has 163 places, 315 transitions, 4452 flow [2024-06-27 22:55:43,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3639, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4452, PETRI_PLACES=163, PETRI_TRANSITIONS=315} [2024-06-27 22:55:43,396 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 112 predicate places. [2024-06-27 22:55:43,396 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 315 transitions, 4452 flow [2024-06-27 22:55:43,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:43,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:43,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:43,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:55:43,396 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:55:43,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:43,397 INFO L85 PathProgramCache]: Analyzing trace with hash 672970928, now seen corresponding path program 1 times [2024-06-27 22:55:43,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:43,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603890888] [2024-06-27 22:55:43,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:43,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:46,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:46,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:46,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603890888] [2024-06-27 22:55:46,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603890888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:46,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:46,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:55:46,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427122572] [2024-06-27 22:55:46,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:46,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:55:46,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:46,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:55:46,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:55:46,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:55:46,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 315 transitions, 4452 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:46,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:46,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:55:46,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:49,412 INFO L124 PetriNetUnfolderBase]: 7578/11167 cut-off events. [2024-06-27 22:55:49,413 INFO L125 PetriNetUnfolderBase]: For 203536/203536 co-relation queries the response was YES. [2024-06-27 22:55:49,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69533 conditions, 11167 events. 7578/11167 cut-off events. For 203536/203536 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 66975 event pairs, 908 based on Foata normal form. 24/11190 useless extension candidates. Maximal degree in co-relation 69454. Up to 8504 conditions per place. [2024-06-27 22:55:49,504 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 307 selfloop transitions, 111 changer transitions 0/425 dead transitions. [2024-06-27 22:55:49,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 425 transitions, 6110 flow [2024-06-27 22:55:49,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:55:49,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:55:49,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 266 transitions. [2024-06-27 22:55:49,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6288416075650118 [2024-06-27 22:55:49,506 INFO L175 Difference]: Start difference. First operand has 163 places, 315 transitions, 4452 flow. Second operand 9 states and 266 transitions. [2024-06-27 22:55:49,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 425 transitions, 6110 flow [2024-06-27 22:55:49,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 425 transitions, 5933 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-27 22:55:49,767 INFO L231 Difference]: Finished difference. Result has 168 places, 321 transitions, 4632 flow [2024-06-27 22:55:49,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4275, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4632, PETRI_PLACES=168, PETRI_TRANSITIONS=321} [2024-06-27 22:55:49,768 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 117 predicate places. [2024-06-27 22:55:49,768 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 321 transitions, 4632 flow [2024-06-27 22:55:49,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:49,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:49,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:49,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:55:49,768 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:55:49,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:49,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1525816568, now seen corresponding path program 2 times [2024-06-27 22:55:49,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:49,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869452913] [2024-06-27 22:55:49,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:49,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:49,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:52,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:52,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:52,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869452913] [2024-06-27 22:55:52,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869452913] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:52,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:52,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:55:52,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165307255] [2024-06-27 22:55:52,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:52,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:55:52,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:52,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:55:52,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:55:53,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:55:53,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 321 transitions, 4632 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:53,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:53,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:55:53,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:55,851 INFO L124 PetriNetUnfolderBase]: 7532/11101 cut-off events. [2024-06-27 22:55:55,851 INFO L125 PetriNetUnfolderBase]: For 214882/214882 co-relation queries the response was YES. [2024-06-27 22:55:55,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69855 conditions, 11101 events. 7532/11101 cut-off events. For 214882/214882 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 66087 event pairs, 1095 based on Foata normal form. 30/11130 useless extension candidates. Maximal degree in co-relation 69775. Up to 9037 conditions per place. [2024-06-27 22:55:55,974 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 292 selfloop transitions, 108 changer transitions 0/407 dead transitions. [2024-06-27 22:55:55,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 407 transitions, 6027 flow [2024-06-27 22:55:55,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:55:55,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:55:55,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 244 transitions. [2024-06-27 22:55:55,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5768321513002365 [2024-06-27 22:55:55,976 INFO L175 Difference]: Start difference. First operand has 168 places, 321 transitions, 4632 flow. Second operand 9 states and 244 transitions. [2024-06-27 22:55:55,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 407 transitions, 6027 flow [2024-06-27 22:55:56,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 407 transitions, 5859 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-06-27 22:55:56,379 INFO L231 Difference]: Finished difference. Result has 173 places, 322 transitions, 4739 flow [2024-06-27 22:55:56,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4482, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4739, PETRI_PLACES=173, PETRI_TRANSITIONS=322} [2024-06-27 22:55:56,380 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 122 predicate places. [2024-06-27 22:55:56,380 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 322 transitions, 4739 flow [2024-06-27 22:55:56,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:56,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:56,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:56,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:55:56,381 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:55:56,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:56,381 INFO L85 PathProgramCache]: Analyzing trace with hash -370769302, now seen corresponding path program 3 times [2024-06-27 22:55:56,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:56,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681477166] [2024-06-27 22:55:56,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:56,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:56,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:59,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:59,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:59,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681477166] [2024-06-27 22:55:59,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681477166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:59,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:59,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:55:59,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265216123] [2024-06-27 22:55:59,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:59,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:55:59,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:59,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:55:59,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:55:59,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:55:59,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 322 transitions, 4739 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:59,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:59,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:55:59,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:56:02,565 INFO L124 PetriNetUnfolderBase]: 7945/11731 cut-off events. [2024-06-27 22:56:02,565 INFO L125 PetriNetUnfolderBase]: For 226594/226598 co-relation queries the response was YES. [2024-06-27 22:56:02,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73328 conditions, 11731 events. 7945/11731 cut-off events. For 226594/226598 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 71028 event pairs, 1178 based on Foata normal form. 34/11764 useless extension candidates. Maximal degree in co-relation 73245. Up to 7639 conditions per place. [2024-06-27 22:56:02,690 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 230 selfloop transitions, 182 changer transitions 0/419 dead transitions. [2024-06-27 22:56:02,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 419 transitions, 6409 flow [2024-06-27 22:56:02,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:56:02,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:56:02,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 241 transitions. [2024-06-27 22:56:02,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6409574468085106 [2024-06-27 22:56:02,691 INFO L175 Difference]: Start difference. First operand has 173 places, 322 transitions, 4739 flow. Second operand 8 states and 241 transitions. [2024-06-27 22:56:02,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 419 transitions, 6409 flow [2024-06-27 22:56:03,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 419 transitions, 6264 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-27 22:56:03,280 INFO L231 Difference]: Finished difference. Result has 176 places, 323 transitions, 4981 flow [2024-06-27 22:56:03,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4594, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4981, PETRI_PLACES=176, PETRI_TRANSITIONS=323} [2024-06-27 22:56:03,280 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 125 predicate places. [2024-06-27 22:56:03,280 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 323 transitions, 4981 flow [2024-06-27 22:56:03,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:03,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:56:03,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:56:03,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:56:03,281 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:56:03,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:56:03,282 INFO L85 PathProgramCache]: Analyzing trace with hash -364098102, now seen corresponding path program 1 times [2024-06-27 22:56:03,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:56:03,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763823949] [2024-06-27 22:56:03,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:56:03,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:56:03,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:56:06,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:56:06,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:56:06,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763823949] [2024-06-27 22:56:06,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763823949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:56:06,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:56:06,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:56:06,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321567216] [2024-06-27 22:56:06,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:56:06,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:56:06,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:56:06,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:56:06,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:56:06,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:56:06,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 323 transitions, 4981 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:06,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:56:06,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:56:06,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:56:09,910 INFO L124 PetriNetUnfolderBase]: 8678/12828 cut-off events. [2024-06-27 22:56:09,911 INFO L125 PetriNetUnfolderBase]: For 266375/266379 co-relation queries the response was YES. [2024-06-27 22:56:09,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82694 conditions, 12828 events. 8678/12828 cut-off events. For 266375/266379 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 79232 event pairs, 1311 based on Foata normal form. 22/12849 useless extension candidates. Maximal degree in co-relation 82611. Up to 6532 conditions per place. [2024-06-27 22:56:10,034 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 243 selfloop transitions, 177 changer transitions 0/427 dead transitions. [2024-06-27 22:56:10,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 427 transitions, 6859 flow [2024-06-27 22:56:10,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:56:10,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:56:10,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 255 transitions. [2024-06-27 22:56:10,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6028368794326241 [2024-06-27 22:56:10,038 INFO L175 Difference]: Start difference. First operand has 176 places, 323 transitions, 4981 flow. Second operand 9 states and 255 transitions. [2024-06-27 22:56:10,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 427 transitions, 6859 flow [2024-06-27 22:56:10,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 427 transitions, 6494 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 22:56:10,544 INFO L231 Difference]: Finished difference. Result has 180 places, 326 transitions, 5078 flow [2024-06-27 22:56:10,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4616, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5078, PETRI_PLACES=180, PETRI_TRANSITIONS=326} [2024-06-27 22:56:10,545 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 129 predicate places. [2024-06-27 22:56:10,545 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 326 transitions, 5078 flow [2024-06-27 22:56:10,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:10,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:56:10,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:56:10,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 22:56:10,546 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:56:10,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:56:10,546 INFO L85 PathProgramCache]: Analyzing trace with hash 572993550, now seen corresponding path program 4 times [2024-06-27 22:56:10,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:56:10,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398861650] [2024-06-27 22:56:10,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:56:10,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:56:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:56:12,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:56:12,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:56:12,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398861650] [2024-06-27 22:56:12,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398861650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:56:12,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:56:12,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:56:12,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860769374] [2024-06-27 22:56:12,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:56:12,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:56:12,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:56:12,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:56:12,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:56:12,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:56:12,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 326 transitions, 5078 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:12,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:56:12,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:56:12,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:56:16,304 INFO L124 PetriNetUnfolderBase]: 10294/15307 cut-off events. [2024-06-27 22:56:16,305 INFO L125 PetriNetUnfolderBase]: For 313051/313051 co-relation queries the response was YES. [2024-06-27 22:56:16,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97818 conditions, 15307 events. 10294/15307 cut-off events. For 313051/313051 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 97644 event pairs, 1795 based on Foata normal form. 6/15312 useless extension candidates. Maximal degree in co-relation 97732. Up to 10986 conditions per place. [2024-06-27 22:56:16,435 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 273 selfloop transitions, 179 changer transitions 0/459 dead transitions. [2024-06-27 22:56:16,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 459 transitions, 7151 flow [2024-06-27 22:56:16,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:56:16,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:56:16,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 308 transitions. [2024-06-27 22:56:16,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5957446808510638 [2024-06-27 22:56:16,437 INFO L175 Difference]: Start difference. First operand has 180 places, 326 transitions, 5078 flow. Second operand 11 states and 308 transitions. [2024-06-27 22:56:16,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 459 transitions, 7151 flow [2024-06-27 22:56:17,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 459 transitions, 6916 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-27 22:56:17,084 INFO L231 Difference]: Finished difference. Result has 187 places, 346 transitions, 5602 flow [2024-06-27 22:56:17,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4853, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5602, PETRI_PLACES=187, PETRI_TRANSITIONS=346} [2024-06-27 22:56:17,085 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 136 predicate places. [2024-06-27 22:56:17,085 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 346 transitions, 5602 flow [2024-06-27 22:56:17,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:17,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:56:17,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:56:17,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 22:56:17,085 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:56:17,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:56:17,086 INFO L85 PathProgramCache]: Analyzing trace with hash 575850510, now seen corresponding path program 5 times [2024-06-27 22:56:17,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:56:17,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638350811] [2024-06-27 22:56:17,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:56:17,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:56:17,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:56:19,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:56:19,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:56:19,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638350811] [2024-06-27 22:56:19,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638350811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:56:19,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:56:19,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:56:19,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211754957] [2024-06-27 22:56:19,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:56:19,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:56:19,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:56:19,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:56:19,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:56:19,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:56:19,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 346 transitions, 5602 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:19,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:56:19,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:56:19,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:56:23,459 INFO L124 PetriNetUnfolderBase]: 10379/15558 cut-off events. [2024-06-27 22:56:23,459 INFO L125 PetriNetUnfolderBase]: For 348441/348441 co-relation queries the response was YES. [2024-06-27 22:56:23,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104804 conditions, 15558 events. 10379/15558 cut-off events. For 348441/348441 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 100223 event pairs, 2213 based on Foata normal form. 6/15563 useless extension candidates. Maximal degree in co-relation 104715. Up to 13435 conditions per place. [2024-06-27 22:56:23,611 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 281 selfloop transitions, 167 changer transitions 0/455 dead transitions. [2024-06-27 22:56:23,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 455 transitions, 7339 flow [2024-06-27 22:56:23,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:56:23,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:56:23,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 300 transitions. [2024-06-27 22:56:23,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5802707930367504 [2024-06-27 22:56:23,612 INFO L175 Difference]: Start difference. First operand has 187 places, 346 transitions, 5602 flow. Second operand 11 states and 300 transitions. [2024-06-27 22:56:23,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 455 transitions, 7339 flow [2024-06-27 22:56:24,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 455 transitions, 7086 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-06-27 22:56:24,416 INFO L231 Difference]: Finished difference. Result has 192 places, 352 transitions, 5827 flow [2024-06-27 22:56:24,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5353, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5827, PETRI_PLACES=192, PETRI_TRANSITIONS=352} [2024-06-27 22:56:24,417 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 141 predicate places. [2024-06-27 22:56:24,417 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 352 transitions, 5827 flow [2024-06-27 22:56:24,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:24,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:56:24,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:56:24,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 22:56:24,417 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:56:24,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:56:24,418 INFO L85 PathProgramCache]: Analyzing trace with hash 952206896, now seen corresponding path program 6 times [2024-06-27 22:56:24,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:56:24,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471330231] [2024-06-27 22:56:24,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:56:24,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:56:24,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:56:26,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:56:26,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:56:26,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471330231] [2024-06-27 22:56:26,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471330231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:56:26,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:56:26,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:56:26,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512235684] [2024-06-27 22:56:26,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:56:26,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:56:26,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:56:26,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:56:26,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:56:26,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 22:56:26,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 352 transitions, 5827 flow. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:26,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:56:26,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 22:56:26,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:56:30,330 INFO L124 PetriNetUnfolderBase]: 10245/16151 cut-off events. [2024-06-27 22:56:30,330 INFO L125 PetriNetUnfolderBase]: For 414938/416032 co-relation queries the response was YES. [2024-06-27 22:56:30,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113087 conditions, 16151 events. 10245/16151 cut-off events. For 414938/416032 co-relation queries the response was YES. Maximal size of possible extension queue 828. Compared 114536 event pairs, 957 based on Foata normal form. 382/16275 useless extension candidates. Maximal degree in co-relation 112996. Up to 8512 conditions per place. [2024-06-27 22:56:30,511 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 217 selfloop transitions, 177 changer transitions 0/481 dead transitions. [2024-06-27 22:56:30,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 481 transitions, 8054 flow [2024-06-27 22:56:30,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:56:30,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:56:30,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 300 transitions. [2024-06-27 22:56:30,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2024-06-27 22:56:30,513 INFO L175 Difference]: Start difference. First operand has 192 places, 352 transitions, 5827 flow. Second operand 10 states and 300 transitions. [2024-06-27 22:56:30,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 481 transitions, 8054 flow [2024-06-27 22:56:31,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 481 transitions, 7668 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-27 22:56:31,633 INFO L231 Difference]: Finished difference. Result has 196 places, 381 transitions, 6526 flow [2024-06-27 22:56:31,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5441, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6526, PETRI_PLACES=196, PETRI_TRANSITIONS=381} [2024-06-27 22:56:31,634 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 145 predicate places. [2024-06-27 22:56:31,634 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 381 transitions, 6526 flow [2024-06-27 22:56:31,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:31,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:56:31,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:56:31,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 22:56:31,635 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:56:31,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:56:31,635 INFO L85 PathProgramCache]: Analyzing trace with hash 575855470, now seen corresponding path program 2 times [2024-06-27 22:56:31,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:56:31,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852738567] [2024-06-27 22:56:31,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:56:31,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:56:31,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:56:35,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:56:35,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:56:35,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852738567] [2024-06-27 22:56:35,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852738567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:56:35,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:56:35,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:56:35,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049614873] [2024-06-27 22:56:35,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:56:35,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:56:35,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:56:35,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:56:35,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:56:35,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:56:35,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 381 transitions, 6526 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:35,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:56:35,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:56:35,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:56:40,054 INFO L124 PetriNetUnfolderBase]: 12561/18950 cut-off events. [2024-06-27 22:56:40,054 INFO L125 PetriNetUnfolderBase]: For 497421/497421 co-relation queries the response was YES. [2024-06-27 22:56:40,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137607 conditions, 18950 events. 12561/18950 cut-off events. For 497421/497421 co-relation queries the response was YES. Maximal size of possible extension queue 835. Compared 126856 event pairs, 2844 based on Foata normal form. 24/18973 useless extension candidates. Maximal degree in co-relation 137512. Up to 15925 conditions per place. [2024-06-27 22:56:40,235 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 348 selfloop transitions, 141 changer transitions 0/496 dead transitions. [2024-06-27 22:56:40,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 496 transitions, 8416 flow [2024-06-27 22:56:40,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:56:40,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:56:40,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 295 transitions. [2024-06-27 22:56:40,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5705996131528046 [2024-06-27 22:56:40,237 INFO L175 Difference]: Start difference. First operand has 196 places, 381 transitions, 6526 flow. Second operand 11 states and 295 transitions. [2024-06-27 22:56:40,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 496 transitions, 8416 flow [2024-06-27 22:56:41,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 496 transitions, 8289 flow, removed 48 selfloop flow, removed 4 redundant places. [2024-06-27 22:56:41,269 INFO L231 Difference]: Finished difference. Result has 203 places, 386 transitions, 6837 flow [2024-06-27 22:56:41,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6399, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6837, PETRI_PLACES=203, PETRI_TRANSITIONS=386} [2024-06-27 22:56:41,270 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 152 predicate places. [2024-06-27 22:56:41,270 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 386 transitions, 6837 flow [2024-06-27 22:56:41,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:41,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:56:41,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:56:41,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 22:56:41,271 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:56:41,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:56:41,271 INFO L85 PathProgramCache]: Analyzing trace with hash -120282002, now seen corresponding path program 1 times [2024-06-27 22:56:41,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:56:41,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186322569] [2024-06-27 22:56:41,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:56:41,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:56:41,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:56:43,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:56:43,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:56:43,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186322569] [2024-06-27 22:56:43,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186322569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:56:43,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:56:43,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:56:43,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741041331] [2024-06-27 22:56:43,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:56:43,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:56:43,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:56:43,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:56:43,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:56:43,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:56:43,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 386 transitions, 6837 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:43,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:56:43,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:56:43,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:56:47,935 INFO L124 PetriNetUnfolderBase]: 12551/18984 cut-off events. [2024-06-27 22:56:47,935 INFO L125 PetriNetUnfolderBase]: For 499372/499372 co-relation queries the response was YES. [2024-06-27 22:56:48,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138235 conditions, 18984 events. 12551/18984 cut-off events. For 499372/499372 co-relation queries the response was YES. Maximal size of possible extension queue 829. Compared 127509 event pairs, 3196 based on Foata normal form. 2/18985 useless extension candidates. Maximal degree in co-relation 138139. Up to 17697 conditions per place. [2024-06-27 22:56:48,142 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 368 selfloop transitions, 74 changer transitions 0/449 dead transitions. [2024-06-27 22:56:48,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 449 transitions, 8363 flow [2024-06-27 22:56:48,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:56:48,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:56:48,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 176 transitions. [2024-06-27 22:56:48,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.624113475177305 [2024-06-27 22:56:48,171 INFO L175 Difference]: Start difference. First operand has 203 places, 386 transitions, 6837 flow. Second operand 6 states and 176 transitions. [2024-06-27 22:56:48,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 449 transitions, 8363 flow [2024-06-27 22:56:49,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 449 transitions, 8114 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-27 22:56:49,183 INFO L231 Difference]: Finished difference. Result has 203 places, 395 transitions, 7055 flow [2024-06-27 22:56:49,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6611, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7055, PETRI_PLACES=203, PETRI_TRANSITIONS=395} [2024-06-27 22:56:49,184 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 152 predicate places. [2024-06-27 22:56:49,184 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 395 transitions, 7055 flow [2024-06-27 22:56:49,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:49,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:56:49,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:56:49,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 22:56:49,185 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:56:49,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:56:49,185 INFO L85 PathProgramCache]: Analyzing trace with hash -889508, now seen corresponding path program 7 times [2024-06-27 22:56:49,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:56:49,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015133694] [2024-06-27 22:56:49,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:56:49,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:56:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:56:52,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:56:52,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:56:52,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015133694] [2024-06-27 22:56:52,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015133694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:56:52,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:56:52,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:56:52,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249121496] [2024-06-27 22:56:52,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:56:52,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:56:52,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:56:52,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:56:52,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:56:52,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:56:52,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 395 transitions, 7055 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:52,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:56:52,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:56:52,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:56:59,522 INFO L124 PetriNetUnfolderBase]: 16890/25764 cut-off events. [2024-06-27 22:56:59,522 INFO L125 PetriNetUnfolderBase]: For 646845/646845 co-relation queries the response was YES. [2024-06-27 22:56:59,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180882 conditions, 25764 events. 16890/25764 cut-off events. For 646845/646845 co-relation queries the response was YES. Maximal size of possible extension queue 1121. Compared 181023 event pairs, 3790 based on Foata normal form. 44/25803 useless extension candidates. Maximal degree in co-relation 180785. Up to 18150 conditions per place. [2024-06-27 22:56:59,764 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 386 selfloop transitions, 161 changer transitions 0/554 dead transitions. [2024-06-27 22:56:59,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 554 transitions, 10193 flow [2024-06-27 22:56:59,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:56:59,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:56:59,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 260 transitions. [2024-06-27 22:56:59,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-06-27 22:56:59,765 INFO L175 Difference]: Start difference. First operand has 203 places, 395 transitions, 7055 flow. Second operand 10 states and 260 transitions. [2024-06-27 22:56:59,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 554 transitions, 10193 flow [2024-06-27 22:57:00,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 554 transitions, 10050 flow, removed 30 selfloop flow, removed 3 redundant places. [2024-06-27 22:57:00,950 INFO L231 Difference]: Finished difference. Result has 211 places, 451 transitions, 8535 flow [2024-06-27 22:57:00,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6938, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8535, PETRI_PLACES=211, PETRI_TRANSITIONS=451} [2024-06-27 22:57:00,951 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 160 predicate places. [2024-06-27 22:57:00,951 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 451 transitions, 8535 flow [2024-06-27 22:57:00,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:57:00,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:57:00,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:57:00,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 22:57:00,952 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:57:00,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:57:00,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1967452, now seen corresponding path program 8 times [2024-06-27 22:57:00,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:57:00,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327250766] [2024-06-27 22:57:00,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:57:00,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:57:00,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:57:04,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:57:04,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:57:04,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327250766] [2024-06-27 22:57:04,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327250766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:57:04,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:57:04,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:57:04,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362194180] [2024-06-27 22:57:04,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:57:04,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:57:04,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:57:04,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:57:04,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:57:04,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:57:04,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 451 transitions, 8535 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:57:04,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:57:04,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:57:04,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:57:11,435 INFO L124 PetriNetUnfolderBase]: 16798/25524 cut-off events. [2024-06-27 22:57:11,435 INFO L125 PetriNetUnfolderBase]: For 682632/682632 co-relation queries the response was YES. [2024-06-27 22:57:11,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185727 conditions, 25524 events. 16798/25524 cut-off events. For 682632/682632 co-relation queries the response was YES. Maximal size of possible extension queue 1120. Compared 178600 event pairs, 4140 based on Foata normal form. 50/25569 useless extension candidates. Maximal degree in co-relation 185627. Up to 20494 conditions per place. [2024-06-27 22:57:11,675 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 396 selfloop transitions, 125 changer transitions 0/528 dead transitions. [2024-06-27 22:57:11,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 528 transitions, 10204 flow [2024-06-27 22:57:11,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:57:11,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:57:11,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 227 transitions. [2024-06-27 22:57:11,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5366430260047281 [2024-06-27 22:57:11,677 INFO L175 Difference]: Start difference. First operand has 211 places, 451 transitions, 8535 flow. Second operand 9 states and 227 transitions. [2024-06-27 22:57:11,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 528 transitions, 10204 flow [2024-06-27 22:57:13,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 528 transitions, 9889 flow, removed 96 selfloop flow, removed 6 redundant places. [2024-06-27 22:57:13,644 INFO L231 Difference]: Finished difference. Result has 214 places, 451 transitions, 8512 flow [2024-06-27 22:57:13,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8220, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8512, PETRI_PLACES=214, PETRI_TRANSITIONS=451} [2024-06-27 22:57:13,645 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 163 predicate places. [2024-06-27 22:57:13,645 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 451 transitions, 8512 flow [2024-06-27 22:57:13,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:57:13,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:57:13,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:57:13,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 22:57:13,646 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:57:13,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:57:13,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1279603646, now seen corresponding path program 9 times [2024-06-27 22:57:13,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:57:13,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461768991] [2024-06-27 22:57:13,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:57:13,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:57:13,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat