./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix003.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix003.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix003.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix003.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 22:01:41,248 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:01:41,305 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:01:41,314 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:01:41,315 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:01:41,346 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:01:41,347 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:01:41,347 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:01:41,347 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:01:41,348 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:01:41,348 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:01:41,348 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:01:41,349 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:01:41,353 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:01:41,353 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:01:41,353 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:01:41,354 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:01:41,355 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:01:41,356 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:01:41,356 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:01:41,357 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:01:41,357 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:01:41,358 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:01:41,358 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:01:41,358 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:01:41,358 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:01:41,359 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:01:41,359 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:01:41,360 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:01:41,360 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:01:41,361 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:01:41,361 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:01:41,361 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:01:41,361 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:01:41,362 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:01:41,362 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:01:41,362 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:01:41,362 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:01:41,362 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:01:41,363 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:01:41,363 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:01:41,363 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:01:41,363 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:01:41,363 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:01:41,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:01:41,613 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:01:41,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:01:41,616 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:01:41,616 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:01:41,617 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix003.oepc.i [2024-06-27 22:01:42,803 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:01:43,047 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:01:43,047 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix003.oepc.i [2024-06-27 22:01:43,070 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0cb3e300/2e3d8cf64412410eb024e605af3621b5/FLAG1f678d014 [2024-06-27 22:01:43,085 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0cb3e300/2e3d8cf64412410eb024e605af3621b5 [2024-06-27 22:01:43,087 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:01:43,088 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:01:43,088 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix003.oepc.yml/witness.yml [2024-06-27 22:01:43,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:01:43,190 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:01:43,193 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:01:43,193 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:01:43,197 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:01:43,198 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:01:43" (1/2) ... [2024-06-27 22:01:43,199 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a2a9778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:01:43, skipping insertion in model container [2024-06-27 22:01:43,199 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:01:43" (1/2) ... [2024-06-27 22:01:43,200 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@f8517bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:01:43, skipping insertion in model container [2024-06-27 22:01:43,201 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:01:43" (2/2) ... [2024-06-27 22:01:43,203 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a2a9778 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:01:43, skipping insertion in model container [2024-06-27 22:01:43,203 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:01:43" (2/2) ... [2024-06-27 22:01:43,203 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:01:43,230 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:01:43,232 INFO L97 edCorrectnessWitness]: Location invariant before [L851-L851] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z$mem_tmp >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$r_buff0_thd1 >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$r_buff0_thd1 >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd1) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd2) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd2) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd0) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd0) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff1 >= 0LL) && (0LL - (long long )z$r_buff1_thd2) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd2) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$read_delayed) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$read_delayed) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$r_buff0_thd1) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$w_buff0) + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )z$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )z$w_buff0_used >= 0LL) && (long long )x + (long long )z$r_buff0_thd1 >= 0LL) && (long long )x + (long long )z$w_buff0 >= 0LL) && (long long )x + (long long )z$w_buff0_used >= 0LL) && (long long )y + (long long )z$r_buff0_thd1 >= 0LL) && (long long )y + (long long )z$w_buff0 >= 0LL) && (long long )y + (long long )z$w_buff0_used >= 0LL) && (long long )z + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z + (long long )z$w_buff0 >= 0LL) && (long long )z + (long long )z$w_buff0_used >= 0LL) && (long long )z$flush_delayed + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$flush_delayed + (long long )z$w_buff0 >= 0LL) && (long long )z$flush_delayed + (long long )z$w_buff0_used >= 0LL) && (long long )z$mem_tmp + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$mem_tmp + (long long )z$w_buff0 >= 0LL) && (long long )z$mem_tmp + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff0_thd2 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff0_thd3 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd0 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd1 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd2 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd3 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$read_delayed >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff0_thd2 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd2 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd3 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd3 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd0 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd1 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd1 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd2 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd2 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd3 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd3 + (long long )z$w_buff0_used >= 0LL) && (long long )z$read_delayed + (long long )z$w_buff0 >= 0LL) && (long long )z$read_delayed + (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0_used + (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0_used + (long long )z$w_buff1_used >= 0LL) && (long long )weak$$choice0 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )z$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )z$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )z$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )z$w_buff0_used >= 0LL) && (1LL + (long long )z$w_buff0_used) - (long long )z$w_buff1 >= 0LL) && (long long )__unbuffered_p2_EBX - (long long )z$mem_tmp >= 0LL) && (long long )z - (long long )z$mem_tmp >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff0_thd2 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff0_thd3 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd0 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd1 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd2 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd3 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$read_delayed >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff1_thd1 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff1_thd1 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0_used - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-27 22:01:43,232 INFO L97 edCorrectnessWitness]: Location invariant before [L848-L848] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z$mem_tmp >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$r_buff0_thd1 >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$r_buff0_thd1 >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd1) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd2) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd2) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd0) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd0) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff1 >= 0LL) && (0LL - (long long )z$r_buff1_thd2) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd2) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$read_delayed) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$read_delayed) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$r_buff0_thd1) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$w_buff0) + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )z$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )z$w_buff0_used >= 0LL) && (long long )x + (long long )z$r_buff0_thd1 >= 0LL) && (long long )x + (long long )z$w_buff0 >= 0LL) && (long long )x + (long long )z$w_buff0_used >= 0LL) && (long long )y + (long long )z$r_buff0_thd1 >= 0LL) && (long long )y + (long long )z$w_buff0 >= 0LL) && (long long )y + (long long )z$w_buff0_used >= 0LL) && (long long )z + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z + (long long )z$w_buff0 >= 0LL) && (long long )z + (long long )z$w_buff0_used >= 0LL) && (long long )z$flush_delayed + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$flush_delayed + (long long )z$w_buff0 >= 0LL) && (long long )z$flush_delayed + (long long )z$w_buff0_used >= 0LL) && (long long )z$mem_tmp + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$mem_tmp + (long long )z$w_buff0 >= 0LL) && (long long )z$mem_tmp + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff0_thd2 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff0_thd3 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd0 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd1 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd2 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd3 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$read_delayed >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff0_thd2 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd2 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd3 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd3 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd0 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd1 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd1 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd2 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd2 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd3 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd3 + (long long )z$w_buff0_used >= 0LL) && (long long )z$read_delayed + (long long )z$w_buff0 >= 0LL) && (long long )z$read_delayed + (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0_used + (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0_used + (long long )z$w_buff1_used >= 0LL) && (long long )weak$$choice0 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )z$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )z$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )z$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )z$w_buff0_used >= 0LL) && (1LL + (long long )z$w_buff0_used) - (long long )z$w_buff1 >= 0LL) && (long long )__unbuffered_p2_EBX - (long long )z$mem_tmp >= 0LL) && (long long )z - (long long )z$mem_tmp >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff0_thd2 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff0_thd3 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd0 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd1 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd2 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd3 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$read_delayed >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff1_thd1 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff1_thd1 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0_used - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-27 22:01:43,232 INFO L97 edCorrectnessWitness]: Location invariant before [L850-L850] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z$mem_tmp >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$r_buff0_thd1 >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$r_buff0_thd1 >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd1) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd2) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd2) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd0) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd0) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff1 >= 0LL) && (0LL - (long long )z$r_buff1_thd2) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd2) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$read_delayed) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$read_delayed) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$r_buff0_thd1) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$w_buff0) + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )z$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )z$w_buff0_used >= 0LL) && (long long )x + (long long )z$r_buff0_thd1 >= 0LL) && (long long )x + (long long )z$w_buff0 >= 0LL) && (long long )x + (long long )z$w_buff0_used >= 0LL) && (long long )y + (long long )z$r_buff0_thd1 >= 0LL) && (long long )y + (long long )z$w_buff0 >= 0LL) && (long long )y + (long long )z$w_buff0_used >= 0LL) && (long long )z + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z + (long long )z$w_buff0 >= 0LL) && (long long )z + (long long )z$w_buff0_used >= 0LL) && (long long )z$flush_delayed + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$flush_delayed + (long long )z$w_buff0 >= 0LL) && (long long )z$flush_delayed + (long long )z$w_buff0_used >= 0LL) && (long long )z$mem_tmp + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$mem_tmp + (long long )z$w_buff0 >= 0LL) && (long long )z$mem_tmp + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff0_thd2 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff0_thd3 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd0 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd1 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd2 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd3 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$read_delayed >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff0_thd2 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd2 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd3 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd3 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd0 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd1 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd1 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd2 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd2 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd3 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd3 + (long long )z$w_buff0_used >= 0LL) && (long long )z$read_delayed + (long long )z$w_buff0 >= 0LL) && (long long )z$read_delayed + (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0_used + (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0_used + (long long )z$w_buff1_used >= 0LL) && (long long )weak$$choice0 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )z$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )z$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )z$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )z$w_buff0_used >= 0LL) && (1LL + (long long )z$w_buff0_used) - (long long )z$w_buff1 >= 0LL) && (long long )__unbuffered_p2_EBX - (long long )z$mem_tmp >= 0LL) && (long long )z - (long long )z$mem_tmp >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff0_thd2 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff0_thd3 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd0 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd1 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd2 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd3 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$read_delayed >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff1_thd1 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff1_thd1 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0_used - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-27 22:01:43,233 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:01:43,233 INFO L106 edCorrectnessWitness]: ghost_update [L846-L846] multithreaded = 1; [2024-06-27 22:01:43,288 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:01:43,430 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/mix003.oepc.i[945,958] [2024-06-27 22:01:43,585 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:01:43,594 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:01:43,631 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/mix003.oepc.i[945,958] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:01:43,883 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:01:43,927 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:01:43,928 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:01:43 WrapperNode [2024-06-27 22:01:43,928 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:01:43,929 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:01:43,930 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:01:43,930 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:01:43,936 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:01:43" (1/1) ... [2024-06-27 22:01:43,959 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:01:43" (1/1) ... [2024-06-27 22:01:44,017 INFO L138 Inliner]: procedures = 175, calls = 46, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 124 [2024-06-27 22:01:44,018 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:01:44,019 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:01:44,019 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:01:44,019 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:01:44,028 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:01:43" (1/1) ... [2024-06-27 22:01:44,028 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:01:43" (1/1) ... [2024-06-27 22:01:44,037 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:01:43" (1/1) ... [2024-06-27 22:01:44,098 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 22:01:44,099 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:01:43" (1/1) ... [2024-06-27 22:01:44,099 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:01:43" (1/1) ... [2024-06-27 22:01:44,127 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:01:43" (1/1) ... [2024-06-27 22:01:44,129 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:01:43" (1/1) ... [2024-06-27 22:01:44,149 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:01:43" (1/1) ... [2024-06-27 22:01:44,153 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:01:43" (1/1) ... [2024-06-27 22:01:44,165 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:01:44,166 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:01:44,166 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:01:44,166 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:01:44,167 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:01:43" (1/1) ... [2024-06-27 22:01:44,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:01:44,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:01:44,201 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 22:01:44,208 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 22:01:44,231 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:01:44,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:01:44,231 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:01:44,231 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:01:44,231 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:01:44,231 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:01:44,231 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 22:01:44,231 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 22:01:44,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:01:44,232 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:01:44,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:01:44,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:01:44,233 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 22:01:44,335 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:01:44,336 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:01:44,998 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:01:44,999 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:01:45,194 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:01:45,194 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:01:45,195 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:01:45 BoogieIcfgContainer [2024-06-27 22:01:45,195 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:01:45,197 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:01:45,197 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:01:45,200 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:01:45,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:01:43" (1/4) ... [2024-06-27 22:01:45,201 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c1d522a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:01:45, skipping insertion in model container [2024-06-27 22:01:45,202 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:01:43" (2/4) ... [2024-06-27 22:01:45,202 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c1d522a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:01:45, skipping insertion in model container [2024-06-27 22:01:45,202 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:01:43" (3/4) ... [2024-06-27 22:01:45,204 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c1d522a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:01:45, skipping insertion in model container [2024-06-27 22:01:45,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:01:45" (4/4) ... [2024-06-27 22:01:45,206 INFO L112 eAbstractionObserver]: Analyzing ICFG mix003.oepc.i [2024-06-27 22:01:45,221 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:01:45,222 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 22:01:45,222 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:01:45,301 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:01:45,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 48 transitions, 108 flow [2024-06-27 22:01:45,377 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-06-27 22:01:45,377 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:01:45,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 71 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2024-06-27 22:01:45,381 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 48 transitions, 108 flow [2024-06-27 22:01:45,386 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 45 transitions, 99 flow [2024-06-27 22:01:45,399 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:01:45,410 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;@3a65494f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:01:45,410 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 22:01:45,416 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:01:45,417 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 22:01:45,417 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:01:45,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:45,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:01:45,418 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:01:45,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:45,423 INFO L85 PathProgramCache]: Analyzing trace with hash 363555772, now seen corresponding path program 1 times [2024-06-27 22:01:45,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:45,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418216886] [2024-06-27 22:01:45,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:45,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:45,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:01:47,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:01:47,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:01:47,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418216886] [2024-06-27 22:01:47,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418216886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:01:47,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:01:47,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:01:47,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830982339] [2024-06-27 22:01:47,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:01:47,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:01:47,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:01:47,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:01:47,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:01:47,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 48 [2024-06-27 22:01:47,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:47,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:01:47,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 48 [2024-06-27 22:01:47,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:48,784 INFO L124 PetriNetUnfolderBase]: 3107/5185 cut-off events. [2024-06-27 22:01:48,785 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-06-27 22:01:48,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9754 conditions, 5185 events. 3107/5185 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 34013 event pairs, 2532 based on Foata normal form. 150/4882 useless extension candidates. Maximal degree in co-relation 9742. Up to 4482 conditions per place. [2024-06-27 22:01:48,827 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 40 selfloop transitions, 4 changer transitions 0/58 dead transitions. [2024-06-27 22:01:48,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 58 transitions, 219 flow [2024-06-27 22:01:48,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:01:48,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:01:48,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-06-27 22:01:48,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7013888888888888 [2024-06-27 22:01:48,841 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 99 flow. Second operand 3 states and 101 transitions. [2024-06-27 22:01:48,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 58 transitions, 219 flow [2024-06-27 22:01:48,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 58 transitions, 214 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:01:48,852 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 126 flow [2024-06-27 22:01:48,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2024-06-27 22:01:48,857 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-27 22:01:48,857 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 126 flow [2024-06-27 22:01:48,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:48,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:48,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:48,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:01:48,858 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:01:48,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:48,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1484783226, now seen corresponding path program 1 times [2024-06-27 22:01:48,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:48,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046645515] [2024-06-27 22:01:48,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:48,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:48,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:01:50,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:01:50,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:01:50,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046645515] [2024-06-27 22:01:50,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046645515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:01:50,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:01:50,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:01:50,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206306179] [2024-06-27 22:01:50,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:01:50,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:01:50,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:01:50,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:01:50,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:01:50,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 48 [2024-06-27 22:01:50,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:50,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:01:50,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 48 [2024-06-27 22:01:50,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:51,313 INFO L124 PetriNetUnfolderBase]: 3109/5207 cut-off events. [2024-06-27 22:01:51,314 INFO L125 PetriNetUnfolderBase]: For 743/743 co-relation queries the response was YES. [2024-06-27 22:01:51,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10930 conditions, 5207 events. 3109/5207 cut-off events. For 743/743 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 34145 event pairs, 1974 based on Foata normal form. 3/4795 useless extension candidates. Maximal degree in co-relation 10918. Up to 4467 conditions per place. [2024-06-27 22:01:51,353 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 50 selfloop transitions, 8 changer transitions 1/73 dead transitions. [2024-06-27 22:01:51,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 73 transitions, 317 flow [2024-06-27 22:01:51,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:01:51,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:01:51,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2024-06-27 22:01:51,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6614583333333334 [2024-06-27 22:01:51,360 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 126 flow. Second operand 4 states and 127 transitions. [2024-06-27 22:01:51,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 73 transitions, 317 flow [2024-06-27 22:01:51,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 73 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:01:51,363 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 191 flow [2024-06-27 22:01:51,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=191, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2024-06-27 22:01:51,365 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 4 predicate places. [2024-06-27 22:01:51,365 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 191 flow [2024-06-27 22:01:51,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:51,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:51,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:51,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:01:51,369 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:01:51,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:51,374 INFO L85 PathProgramCache]: Analyzing trace with hash 947578169, now seen corresponding path program 1 times [2024-06-27 22:01:51,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:51,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868709930] [2024-06-27 22:01:51,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:51,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:01:53,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:01:53,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:01:53,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868709930] [2024-06-27 22:01:53,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868709930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:01:53,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:01:53,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:01:53,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202891928] [2024-06-27 22:01:53,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:01:53,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:01:53,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:01:53,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:01:53,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:01:53,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-27 22:01:53,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 191 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:53,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:01:53,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-27 22:01:53,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:54,645 INFO L124 PetriNetUnfolderBase]: 3668/5703 cut-off events. [2024-06-27 22:01:54,646 INFO L125 PetriNetUnfolderBase]: For 2480/2480 co-relation queries the response was YES. [2024-06-27 22:01:54,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13617 conditions, 5703 events. 3668/5703 cut-off events. For 2480/2480 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 35303 event pairs, 1615 based on Foata normal form. 3/5407 useless extension candidates. Maximal degree in co-relation 13602. Up to 5195 conditions per place. [2024-06-27 22:01:54,694 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 71 selfloop transitions, 21 changer transitions 3/108 dead transitions. [2024-06-27 22:01:54,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 108 transitions, 547 flow [2024-06-27 22:01:54,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:01:54,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:01:54,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 186 transitions. [2024-06-27 22:01:54,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2024-06-27 22:01:54,699 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 191 flow. Second operand 6 states and 186 transitions. [2024-06-27 22:01:54,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 108 transitions, 547 flow [2024-06-27 22:01:54,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 108 transitions, 530 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-27 22:01:54,705 INFO L231 Difference]: Finished difference. Result has 65 places, 65 transitions, 309 flow [2024-06-27 22:01:54,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=309, PETRI_PLACES=65, PETRI_TRANSITIONS=65} [2024-06-27 22:01:54,706 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 11 predicate places. [2024-06-27 22:01:54,707 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 65 transitions, 309 flow [2024-06-27 22:01:54,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:54,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:54,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:54,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:01:54,708 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:01:54,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:54,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1858514291, now seen corresponding path program 1 times [2024-06-27 22:01:54,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:54,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892583407] [2024-06-27 22:01:54,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:54,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:01:54,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:01:54,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:01:54,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892583407] [2024-06-27 22:01:54,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892583407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:01:54,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:01:54,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:01:54,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252156240] [2024-06-27 22:01:54,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:01:54,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:01:54,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:01:54,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:01:54,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:01:54,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 48 [2024-06-27 22:01:54,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 65 transitions, 309 flow. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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 22:01:54,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:01:54,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 48 [2024-06-27 22:01:54,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:55,236 INFO L124 PetriNetUnfolderBase]: 1336/2802 cut-off events. [2024-06-27 22:01:55,237 INFO L125 PetriNetUnfolderBase]: For 1235/1298 co-relation queries the response was YES. [2024-06-27 22:01:55,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6077 conditions, 2802 events. 1336/2802 cut-off events. For 1235/1298 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 21301 event pairs, 771 based on Foata normal form. 8/2546 useless extension candidates. Maximal degree in co-relation 6058. Up to 1746 conditions per place. [2024-06-27 22:01:55,260 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 38 selfloop transitions, 4 changer transitions 0/80 dead transitions. [2024-06-27 22:01:55,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 80 transitions, 427 flow [2024-06-27 22:01:55,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:01:55,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:01:55,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-06-27 22:01:55,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7847222222222222 [2024-06-27 22:01:55,262 INFO L175 Difference]: Start difference. First operand has 65 places, 65 transitions, 309 flow. Second operand 3 states and 113 transitions. [2024-06-27 22:01:55,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 80 transitions, 427 flow [2024-06-27 22:01:55,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 80 transitions, 404 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-27 22:01:55,270 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 290 flow [2024-06-27 22:01:55,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=290, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2024-06-27 22:01:55,272 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 11 predicate places. [2024-06-27 22:01:55,272 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 290 flow [2024-06-27 22:01:55,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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 22:01:55,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:55,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:55,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:01:55,273 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:01:55,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:55,273 INFO L85 PathProgramCache]: Analyzing trace with hash -689846514, now seen corresponding path program 1 times [2024-06-27 22:01:55,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:55,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445080017] [2024-06-27 22:01:55,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:55,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:55,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:01:57,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:01:57,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:01:57,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445080017] [2024-06-27 22:01:57,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445080017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:01:57,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:01:57,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:01:57,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387112498] [2024-06-27 22:01:57,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:01:57,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:01:57,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:01:57,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:01:57,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:01:58,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-27 22:01:58,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 290 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:58,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:01:58,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-27 22:01:58,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:59,047 INFO L124 PetriNetUnfolderBase]: 3149/5247 cut-off events. [2024-06-27 22:01:59,048 INFO L125 PetriNetUnfolderBase]: For 5208/5208 co-relation queries the response was YES. [2024-06-27 22:01:59,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13608 conditions, 5247 events. 3149/5247 cut-off events. For 5208/5208 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 33533 event pairs, 1171 based on Foata normal form. 6/5061 useless extension candidates. Maximal degree in co-relation 13588. Up to 4430 conditions per place. [2024-06-27 22:01:59,081 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 85 selfloop transitions, 16 changer transitions 5/119 dead transitions. [2024-06-27 22:01:59,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 119 transitions, 657 flow [2024-06-27 22:01:59,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:01:59,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:01:59,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 209 transitions. [2024-06-27 22:01:59,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6220238095238095 [2024-06-27 22:01:59,083 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 290 flow. Second operand 7 states and 209 transitions. [2024-06-27 22:01:59,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 119 transitions, 657 flow [2024-06-27 22:01:59,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 119 transitions, 649 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 22:01:59,090 INFO L231 Difference]: Finished difference. Result has 71 places, 68 transitions, 368 flow [2024-06-27 22:01:59,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=368, PETRI_PLACES=71, PETRI_TRANSITIONS=68} [2024-06-27 22:01:59,094 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 17 predicate places. [2024-06-27 22:01:59,094 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 68 transitions, 368 flow [2024-06-27 22:01:59,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:59,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:59,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:59,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:01:59,095 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:01:59,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:59,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1415999150, now seen corresponding path program 1 times [2024-06-27 22:01:59,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:59,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800670472] [2024-06-27 22:01:59,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:59,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:01,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:01,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:01,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800670472] [2024-06-27 22:02:01,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800670472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:01,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:01,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:02:01,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040906805] [2024-06-27 22:02:01,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:01,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:02:01,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:01,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:02:01,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:02:01,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:02:01,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 68 transitions, 368 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 22:02:01,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:01,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:02:01,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:02,266 INFO L124 PetriNetUnfolderBase]: 3810/6368 cut-off events. [2024-06-27 22:02:02,266 INFO L125 PetriNetUnfolderBase]: For 7969/7969 co-relation queries the response was YES. [2024-06-27 22:02:02,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16807 conditions, 6368 events. 3810/6368 cut-off events. For 7969/7969 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 41247 event pairs, 1709 based on Foata normal form. 2/6188 useless extension candidates. Maximal degree in co-relation 16783. Up to 5452 conditions per place. [2024-06-27 22:02:02,306 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 67 selfloop transitions, 13 changer transitions 0/90 dead transitions. [2024-06-27 22:02:02,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 90 transitions, 601 flow [2024-06-27 22:02:02,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:02:02,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:02:02,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2024-06-27 22:02:02,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2024-06-27 22:02:02,308 INFO L175 Difference]: Start difference. First operand has 71 places, 68 transitions, 368 flow. Second operand 5 states and 124 transitions. [2024-06-27 22:02:02,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 90 transitions, 601 flow [2024-06-27 22:02:02,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 90 transitions, 564 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 22:02:02,314 INFO L231 Difference]: Finished difference. Result has 73 places, 73 transitions, 410 flow [2024-06-27 22:02:02,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=410, PETRI_PLACES=73, PETRI_TRANSITIONS=73} [2024-06-27 22:02:02,317 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 19 predicate places. [2024-06-27 22:02:02,318 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 73 transitions, 410 flow [2024-06-27 22:02:02,318 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 22:02:02,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:02,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:02,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:02:02,318 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:02:02,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:02,319 INFO L85 PathProgramCache]: Analyzing trace with hash -946299637, now seen corresponding path program 1 times [2024-06-27 22:02:02,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:02,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613376647] [2024-06-27 22:02:02,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:02,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:02,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:04,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:04,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:04,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613376647] [2024-06-27 22:02:04,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613376647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:04,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:04,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:02:04,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202500806] [2024-06-27 22:02:04,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:04,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:02:04,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:04,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:02:04,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:02:04,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:02:04,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 73 transitions, 410 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:04,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:04,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:02:04,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:05,587 INFO L124 PetriNetUnfolderBase]: 3800/6349 cut-off events. [2024-06-27 22:02:05,587 INFO L125 PetriNetUnfolderBase]: For 10384/10384 co-relation queries the response was YES. [2024-06-27 22:02:05,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17601 conditions, 6349 events. 3800/6349 cut-off events. For 10384/10384 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 41071 event pairs, 1625 based on Foata normal form. 4/6173 useless extension candidates. Maximal degree in co-relation 17573. Up to 5404 conditions per place. [2024-06-27 22:02:05,628 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 76 selfloop transitions, 16 changer transitions 0/102 dead transitions. [2024-06-27 22:02:05,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 102 transitions, 678 flow [2024-06-27 22:02:05,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:02:05,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:02:05,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-27 22:02:05,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5173611111111112 [2024-06-27 22:02:05,631 INFO L175 Difference]: Start difference. First operand has 73 places, 73 transitions, 410 flow. Second operand 6 states and 149 transitions. [2024-06-27 22:02:05,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 102 transitions, 678 flow [2024-06-27 22:02:05,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 102 transitions, 657 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 22:02:05,640 INFO L231 Difference]: Finished difference. Result has 77 places, 76 transitions, 457 flow [2024-06-27 22:02:05,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=457, PETRI_PLACES=77, PETRI_TRANSITIONS=76} [2024-06-27 22:02:05,641 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 23 predicate places. [2024-06-27 22:02:05,642 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 76 transitions, 457 flow [2024-06-27 22:02:05,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:05,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:05,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:05,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:02:05,642 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:02:05,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:05,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1089411482, now seen corresponding path program 1 times [2024-06-27 22:02:05,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:05,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223503396] [2024-06-27 22:02:05,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:05,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:05,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:07,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:07,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:07,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223503396] [2024-06-27 22:02:07,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223503396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:07,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:07,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:02:07,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287374120] [2024-06-27 22:02:07,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:07,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:02:07,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:07,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:02:07,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:02:07,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:02:07,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 76 transitions, 457 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:07,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:07,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:02:07,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:08,320 INFO L124 PetriNetUnfolderBase]: 3860/6071 cut-off events. [2024-06-27 22:02:08,320 INFO L125 PetriNetUnfolderBase]: For 13105/13109 co-relation queries the response was YES. [2024-06-27 22:02:08,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18595 conditions, 6071 events. 3860/6071 cut-off events. For 13105/13109 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 36205 event pairs, 1495 based on Foata normal form. 6/6014 useless extension candidates. Maximal degree in co-relation 18564. Up to 5485 conditions per place. [2024-06-27 22:02:08,356 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 82 selfloop transitions, 22 changer transitions 0/114 dead transitions. [2024-06-27 22:02:08,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 114 transitions, 851 flow [2024-06-27 22:02:08,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:02:08,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:02:08,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-27 22:02:08,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-27 22:02:08,358 INFO L175 Difference]: Start difference. First operand has 77 places, 76 transitions, 457 flow. Second operand 6 states and 150 transitions. [2024-06-27 22:02:08,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 114 transitions, 851 flow [2024-06-27 22:02:08,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 114 transitions, 802 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-27 22:02:08,368 INFO L231 Difference]: Finished difference. Result has 81 places, 91 transitions, 606 flow [2024-06-27 22:02:08,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=606, PETRI_PLACES=81, PETRI_TRANSITIONS=91} [2024-06-27 22:02:08,368 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 27 predicate places. [2024-06-27 22:02:08,369 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 91 transitions, 606 flow [2024-06-27 22:02:08,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:08,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:08,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:08,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:02:08,369 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:02:08,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:08,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1102332902, now seen corresponding path program 2 times [2024-06-27 22:02:08,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:08,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195016302] [2024-06-27 22:02:08,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:08,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:08,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:10,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:10,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:10,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195016302] [2024-06-27 22:02:10,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195016302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:10,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:10,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:02:10,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291185247] [2024-06-27 22:02:10,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:10,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:02:10,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:10,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:02:10,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:02:10,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:02:10,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 91 transitions, 606 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:10,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:10,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:02:10,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:10,927 INFO L124 PetriNetUnfolderBase]: 3860/6073 cut-off events. [2024-06-27 22:02:10,927 INFO L125 PetriNetUnfolderBase]: For 16570/16570 co-relation queries the response was YES. [2024-06-27 22:02:10,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19861 conditions, 6073 events. 3860/6073 cut-off events. For 16570/16570 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 36313 event pairs, 1489 based on Foata normal form. 2/6011 useless extension candidates. Maximal degree in co-relation 19826. Up to 5513 conditions per place. [2024-06-27 22:02:10,968 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 88 selfloop transitions, 18 changer transitions 0/116 dead transitions. [2024-06-27 22:02:10,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 116 transitions, 903 flow [2024-06-27 22:02:10,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:02:10,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:02:10,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-27 22:02:10,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5069444444444444 [2024-06-27 22:02:10,972 INFO L175 Difference]: Start difference. First operand has 81 places, 91 transitions, 606 flow. Second operand 6 states and 146 transitions. [2024-06-27 22:02:10,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 116 transitions, 903 flow [2024-06-27 22:02:10,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 116 transitions, 868 flow, removed 16 selfloop flow, removed 1 redundant places. [2024-06-27 22:02:10,990 INFO L231 Difference]: Finished difference. Result has 86 places, 94 transitions, 654 flow [2024-06-27 22:02:10,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=654, PETRI_PLACES=86, PETRI_TRANSITIONS=94} [2024-06-27 22:02:10,992 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 32 predicate places. [2024-06-27 22:02:10,992 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 94 transitions, 654 flow [2024-06-27 22:02:10,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:10,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:10,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:10,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:02:10,993 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:02:10,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:10,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1963913270, now seen corresponding path program 3 times [2024-06-27 22:02:10,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:10,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979838133] [2024-06-27 22:02:10,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:10,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:11,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:12,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:12,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:12,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979838133] [2024-06-27 22:02:12,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979838133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:12,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:12,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:02:12,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209400418] [2024-06-27 22:02:12,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:12,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:02:12,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:12,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:02:12,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:02:12,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:02:12,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 94 transitions, 654 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:12,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:12,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:02:12,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:14,007 INFO L124 PetriNetUnfolderBase]: 3911/6572 cut-off events. [2024-06-27 22:02:14,007 INFO L125 PetriNetUnfolderBase]: For 21219/21225 co-relation queries the response was YES. [2024-06-27 22:02:14,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21604 conditions, 6572 events. 3911/6572 cut-off events. For 21219/21225 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 42629 event pairs, 1631 based on Foata normal form. 8/6397 useless extension candidates. Maximal degree in co-relation 21566. Up to 5511 conditions per place. [2024-06-27 22:02:14,052 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 91 selfloop transitions, 47 changer transitions 0/148 dead transitions. [2024-06-27 22:02:14,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 148 transitions, 1204 flow [2024-06-27 22:02:14,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:02:14,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:02:14,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-27 22:02:14,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-06-27 22:02:14,055 INFO L175 Difference]: Start difference. First operand has 86 places, 94 transitions, 654 flow. Second operand 7 states and 174 transitions. [2024-06-27 22:02:14,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 148 transitions, 1204 flow [2024-06-27 22:02:14,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 148 transitions, 1140 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-27 22:02:14,077 INFO L231 Difference]: Finished difference. Result has 91 places, 121 transitions, 961 flow [2024-06-27 22:02:14,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=599, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=961, PETRI_PLACES=91, PETRI_TRANSITIONS=121} [2024-06-27 22:02:14,078 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 37 predicate places. [2024-06-27 22:02:14,078 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 121 transitions, 961 flow [2024-06-27 22:02:14,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:14,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:14,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:14,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:02:14,079 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:02:14,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:14,080 INFO L85 PathProgramCache]: Analyzing trace with hash 933023409, now seen corresponding path program 1 times [2024-06-27 22:02:14,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:14,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911946557] [2024-06-27 22:02:14,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:14,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:14,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:15,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:15,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:15,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911946557] [2024-06-27 22:02:15,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911946557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:15,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:15,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:02:15,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183253702] [2024-06-27 22:02:15,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:15,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:02:15,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:15,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:02:15,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:02:16,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:02:16,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 121 transitions, 961 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:16,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:16,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:02:16,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:17,187 INFO L124 PetriNetUnfolderBase]: 3963/6655 cut-off events. [2024-06-27 22:02:17,187 INFO L125 PetriNetUnfolderBase]: For 27431/27431 co-relation queries the response was YES. [2024-06-27 22:02:17,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23666 conditions, 6655 events. 3963/6655 cut-off events. For 27431/27431 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 43153 event pairs, 1583 based on Foata normal form. 2/6472 useless extension candidates. Maximal degree in co-relation 23626. Up to 5620 conditions per place. [2024-06-27 22:02:17,224 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 133 selfloop transitions, 23 changer transitions 0/166 dead transitions. [2024-06-27 22:02:17,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 166 transitions, 1502 flow [2024-06-27 22:02:17,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:02:17,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:02:17,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-27 22:02:17,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148809523809523 [2024-06-27 22:02:17,226 INFO L175 Difference]: Start difference. First operand has 91 places, 121 transitions, 961 flow. Second operand 7 states and 173 transitions. [2024-06-27 22:02:17,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 166 transitions, 1502 flow [2024-06-27 22:02:17,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 166 transitions, 1472 flow, removed 14 selfloop flow, removed 1 redundant places. [2024-06-27 22:02:17,256 INFO L231 Difference]: Finished difference. Result has 99 places, 130 transitions, 1116 flow [2024-06-27 22:02:17,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=931, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1116, PETRI_PLACES=99, PETRI_TRANSITIONS=130} [2024-06-27 22:02:17,257 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 45 predicate places. [2024-06-27 22:02:17,257 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 130 transitions, 1116 flow [2024-06-27 22:02:17,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:17,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:17,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:17,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:02:17,258 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:02:17,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:17,258 INFO L85 PathProgramCache]: Analyzing trace with hash -587981559, now seen corresponding path program 2 times [2024-06-27 22:02:17,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:17,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965838605] [2024-06-27 22:02:17,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:17,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:17,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:19,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:19,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:19,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965838605] [2024-06-27 22:02:19,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965838605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:19,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:19,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:02:19,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499552246] [2024-06-27 22:02:19,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:19,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:02:19,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:19,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:02:19,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:02:19,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:02:19,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 130 transitions, 1116 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:19,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:19,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:02:19,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:20,167 INFO L124 PetriNetUnfolderBase]: 4004/6720 cut-off events. [2024-06-27 22:02:20,167 INFO L125 PetriNetUnfolderBase]: For 33781/33787 co-relation queries the response was YES. [2024-06-27 22:02:20,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25159 conditions, 6720 events. 4004/6720 cut-off events. For 33781/33787 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 43575 event pairs, 1595 based on Foata normal form. 8/6542 useless extension candidates. Maximal degree in co-relation 25114. Up to 5589 conditions per place. [2024-06-27 22:02:20,206 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 118 selfloop transitions, 48 changer transitions 0/176 dead transitions. [2024-06-27 22:02:20,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 176 transitions, 1773 flow [2024-06-27 22:02:20,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:02:20,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:02:20,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-27 22:02:20,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-27 22:02:20,208 INFO L175 Difference]: Start difference. First operand has 99 places, 130 transitions, 1116 flow. Second operand 7 states and 175 transitions. [2024-06-27 22:02:20,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 176 transitions, 1773 flow [2024-06-27 22:02:20,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 176 transitions, 1690 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-27 22:02:20,233 INFO L231 Difference]: Finished difference. Result has 105 places, 145 transitions, 1385 flow [2024-06-27 22:02:20,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1064, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1385, PETRI_PLACES=105, PETRI_TRANSITIONS=145} [2024-06-27 22:02:20,234 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 51 predicate places. [2024-06-27 22:02:20,234 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 145 transitions, 1385 flow [2024-06-27 22:02:20,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:20,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:20,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:20,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:02:20,235 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:02:20,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:20,235 INFO L85 PathProgramCache]: Analyzing trace with hash 198648577, now seen corresponding path program 1 times [2024-06-27 22:02:20,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:20,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289323540] [2024-06-27 22:02:20,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:20,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:20,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:22,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:22,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:22,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289323540] [2024-06-27 22:02:22,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289323540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:22,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:22,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:02:22,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652755840] [2024-06-27 22:02:22,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:22,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:02:22,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:22,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:02:22,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:02:22,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:02:22,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 145 transitions, 1385 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:22,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:22,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:02:22,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:23,202 INFO L124 PetriNetUnfolderBase]: 4045/6779 cut-off events. [2024-06-27 22:02:23,203 INFO L125 PetriNetUnfolderBase]: For 41270/41276 co-relation queries the response was YES. [2024-06-27 22:02:23,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26859 conditions, 6779 events. 4045/6779 cut-off events. For 41270/41276 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 43756 event pairs, 1526 based on Foata normal form. 4/6596 useless extension candidates. Maximal degree in co-relation 26811. Up to 5659 conditions per place. [2024-06-27 22:02:23,256 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 131 selfloop transitions, 46 changer transitions 0/187 dead transitions. [2024-06-27 22:02:23,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 187 transitions, 1999 flow [2024-06-27 22:02:23,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:02:23,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:02:23,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-27 22:02:23,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-27 22:02:23,259 INFO L175 Difference]: Start difference. First operand has 105 places, 145 transitions, 1385 flow. Second operand 7 states and 175 transitions. [2024-06-27 22:02:23,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 187 transitions, 1999 flow [2024-06-27 22:02:23,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 187 transitions, 1940 flow, removed 23 selfloop flow, removed 2 redundant places. [2024-06-27 22:02:23,296 INFO L231 Difference]: Finished difference. Result has 111 places, 157 transitions, 1576 flow [2024-06-27 22:02:23,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1326, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1576, PETRI_PLACES=111, PETRI_TRANSITIONS=157} [2024-06-27 22:02:23,297 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 57 predicate places. [2024-06-27 22:02:23,297 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 157 transitions, 1576 flow [2024-06-27 22:02:23,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:23,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:23,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:23,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:02:23,298 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:02:23,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:23,298 INFO L85 PathProgramCache]: Analyzing trace with hash 575982127, now seen corresponding path program 2 times [2024-06-27 22:02:23,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:23,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885197161] [2024-06-27 22:02:23,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:23,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:23,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:24,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:24,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:24,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885197161] [2024-06-27 22:02:24,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885197161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:24,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:24,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:02:24,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841871719] [2024-06-27 22:02:24,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:24,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:02:24,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:24,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:02:24,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:02:24,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:02:24,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 157 transitions, 1576 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:24,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:24,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:02:24,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:25,878 INFO L124 PetriNetUnfolderBase]: 4063/6811 cut-off events. [2024-06-27 22:02:25,878 INFO L125 PetriNetUnfolderBase]: For 47306/47306 co-relation queries the response was YES. [2024-06-27 22:02:25,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28352 conditions, 6811 events. 4063/6811 cut-off events. For 47306/47306 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 43984 event pairs, 1517 based on Foata normal form. 2/6627 useless extension candidates. Maximal degree in co-relation 28300. Up to 5783 conditions per place. [2024-06-27 22:02:25,919 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 157 selfloop transitions, 20 changer transitions 0/187 dead transitions. [2024-06-27 22:02:25,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 187 transitions, 2062 flow [2024-06-27 22:02:25,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:02:25,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:02:25,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-27 22:02:25,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:02:25,921 INFO L175 Difference]: Start difference. First operand has 111 places, 157 transitions, 1576 flow. Second operand 7 states and 168 transitions. [2024-06-27 22:02:25,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 187 transitions, 2062 flow [2024-06-27 22:02:25,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 187 transitions, 2003 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-06-27 22:02:25,955 INFO L231 Difference]: Finished difference. Result has 116 places, 161 transitions, 1628 flow [2024-06-27 22:02:25,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1519, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1628, PETRI_PLACES=116, PETRI_TRANSITIONS=161} [2024-06-27 22:02:25,956 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 62 predicate places. [2024-06-27 22:02:25,956 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 161 transitions, 1628 flow [2024-06-27 22:02:25,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:25,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:25,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:25,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:02:25,956 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:02:25,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:25,957 INFO L85 PathProgramCache]: Analyzing trace with hash -580658739, now seen corresponding path program 3 times [2024-06-27 22:02:25,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:25,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313674164] [2024-06-27 22:02:25,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:25,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:25,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:27,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:27,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:27,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313674164] [2024-06-27 22:02:27,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313674164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:27,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:27,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:02:27,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367097150] [2024-06-27 22:02:27,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:27,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:02:27,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:27,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:02:27,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:02:27,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:02:27,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 161 transitions, 1628 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:27,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:27,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:02:27,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:28,783 INFO L124 PetriNetUnfolderBase]: 4063/6815 cut-off events. [2024-06-27 22:02:28,784 INFO L125 PetriNetUnfolderBase]: For 50257/50257 co-relation queries the response was YES. [2024-06-27 22:02:28,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28610 conditions, 6815 events. 4063/6815 cut-off events. For 50257/50257 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 44042 event pairs, 1517 based on Foata normal form. 2/6630 useless extension candidates. Maximal degree in co-relation 28555. Up to 5767 conditions per place. [2024-06-27 22:02:28,828 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 159 selfloop transitions, 27 changer transitions 0/196 dead transitions. [2024-06-27 22:02:28,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 196 transitions, 2175 flow [2024-06-27 22:02:28,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:02:28,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:02:28,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-27 22:02:28,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059523809523809 [2024-06-27 22:02:28,829 INFO L175 Difference]: Start difference. First operand has 116 places, 161 transitions, 1628 flow. Second operand 7 states and 170 transitions. [2024-06-27 22:02:28,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 196 transitions, 2175 flow [2024-06-27 22:02:28,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 196 transitions, 2065 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-27 22:02:28,868 INFO L231 Difference]: Finished difference. Result has 117 places, 164 transitions, 1641 flow [2024-06-27 22:02:28,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1518, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1641, PETRI_PLACES=117, PETRI_TRANSITIONS=164} [2024-06-27 22:02:28,869 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 63 predicate places. [2024-06-27 22:02:28,869 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 164 transitions, 1641 flow [2024-06-27 22:02:28,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:28,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:28,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:28,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:02:28,870 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:02:28,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:28,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1138874445, now seen corresponding path program 3 times [2024-06-27 22:02:28,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:28,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588748829] [2024-06-27 22:02:28,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:28,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:28,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:30,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:30,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:30,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588748829] [2024-06-27 22:02:30,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588748829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:30,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:30,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:02:30,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782079386] [2024-06-27 22:02:30,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:30,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:02:30,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:30,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:02:30,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:02:30,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:02:30,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 164 transitions, 1641 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:30,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:30,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:02:30,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:31,636 INFO L124 PetriNetUnfolderBase]: 4119/6909 cut-off events. [2024-06-27 22:02:31,636 INFO L125 PetriNetUnfolderBase]: For 58655/58655 co-relation queries the response was YES. [2024-06-27 22:02:31,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30011 conditions, 6909 events. 4119/6909 cut-off events. For 58655/58655 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 44825 event pairs, 1517 based on Foata normal form. 4/6722 useless extension candidates. Maximal degree in co-relation 29957. Up to 5781 conditions per place. [2024-06-27 22:02:31,688 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 164 selfloop transitions, 34 changer transitions 0/208 dead transitions. [2024-06-27 22:02:31,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 208 transitions, 2337 flow [2024-06-27 22:02:31,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:02:31,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:02:31,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-27 22:02:31,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-06-27 22:02:31,693 INFO L175 Difference]: Start difference. First operand has 117 places, 164 transitions, 1641 flow. Second operand 7 states and 176 transitions. [2024-06-27 22:02:31,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 208 transitions, 2337 flow [2024-06-27 22:02:31,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 208 transitions, 2232 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-27 22:02:31,752 INFO L231 Difference]: Finished difference. Result has 119 places, 170 transitions, 1710 flow [2024-06-27 22:02:31,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1536, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1710, PETRI_PLACES=119, PETRI_TRANSITIONS=170} [2024-06-27 22:02:31,752 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 65 predicate places. [2024-06-27 22:02:31,753 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 170 transitions, 1710 flow [2024-06-27 22:02:31,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:31,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:31,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:31,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:02:31,753 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:02:31,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:31,753 INFO L85 PathProgramCache]: Analyzing trace with hash -640789983, now seen corresponding path program 4 times [2024-06-27 22:02:31,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:31,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842974879] [2024-06-27 22:02:31,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:31,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:31,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:33,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:33,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:33,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842974879] [2024-06-27 22:02:33,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842974879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:33,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:33,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:02:33,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802108074] [2024-06-27 22:02:33,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:33,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:02:33,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:33,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:02:33,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:02:33,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:02:33,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 170 transitions, 1710 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:33,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:33,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:02:33,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:34,862 INFO L124 PetriNetUnfolderBase]: 4238/7077 cut-off events. [2024-06-27 22:02:34,862 INFO L125 PetriNetUnfolderBase]: For 67386/67394 co-relation queries the response was YES. [2024-06-27 22:02:34,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32156 conditions, 7077 events. 4238/7077 cut-off events. For 67386/67394 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 45575 event pairs, 1496 based on Foata normal form. 6/6892 useless extension candidates. Maximal degree in co-relation 32101. Up to 5925 conditions per place. [2024-06-27 22:02:34,908 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 183 selfloop transitions, 65 changer transitions 0/258 dead transitions. [2024-06-27 22:02:34,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 258 transitions, 2910 flow [2024-06-27 22:02:34,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:02:34,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:02:34,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 244 transitions. [2024-06-27 22:02:34,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5083333333333333 [2024-06-27 22:02:34,911 INFO L175 Difference]: Start difference. First operand has 119 places, 170 transitions, 1710 flow. Second operand 10 states and 244 transitions. [2024-06-27 22:02:34,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 258 transitions, 2910 flow [2024-06-27 22:02:34,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 258 transitions, 2850 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-27 22:02:34,967 INFO L231 Difference]: Finished difference. Result has 129 places, 210 transitions, 2336 flow [2024-06-27 22:02:34,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1650, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2336, PETRI_PLACES=129, PETRI_TRANSITIONS=210} [2024-06-27 22:02:34,968 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 75 predicate places. [2024-06-27 22:02:34,968 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 210 transitions, 2336 flow [2024-06-27 22:02:34,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:34,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:34,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:34,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:02:34,969 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:02:34,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:34,969 INFO L85 PathProgramCache]: Analyzing trace with hash 739628013, now seen corresponding path program 5 times [2024-06-27 22:02:34,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:34,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017609979] [2024-06-27 22:02:34,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:34,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:34,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:36,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:36,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:36,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017609979] [2024-06-27 22:02:36,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017609979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:36,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:36,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:02:36,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071645248] [2024-06-27 22:02:36,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:36,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:02:36,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:36,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:02:36,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:02:36,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:02:36,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 210 transitions, 2336 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:36,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:36,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:02:36,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:38,426 INFO L124 PetriNetUnfolderBase]: 4304/7169 cut-off events. [2024-06-27 22:02:38,426 INFO L125 PetriNetUnfolderBase]: For 78694/78702 co-relation queries the response was YES. [2024-06-27 22:02:38,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34810 conditions, 7169 events. 4304/7169 cut-off events. For 78694/78702 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 46119 event pairs, 1498 based on Foata normal form. 7/6985 useless extension candidates. Maximal degree in co-relation 34750. Up to 6025 conditions per place. [2024-06-27 22:02:38,473 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 190 selfloop transitions, 77 changer transitions 0/277 dead transitions. [2024-06-27 22:02:38,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 277 transitions, 3434 flow [2024-06-27 22:02:38,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:02:38,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:02:38,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-27 22:02:38,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130208333333334 [2024-06-27 22:02:38,475 INFO L175 Difference]: Start difference. First operand has 129 places, 210 transitions, 2336 flow. Second operand 8 states and 197 transitions. [2024-06-27 22:02:38,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 277 transitions, 3434 flow [2024-06-27 22:02:38,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 277 transitions, 3126 flow, removed 150 selfloop flow, removed 2 redundant places. [2024-06-27 22:02:38,556 INFO L231 Difference]: Finished difference. Result has 136 places, 243 transitions, 2706 flow [2024-06-27 22:02:38,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2124, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2706, PETRI_PLACES=136, PETRI_TRANSITIONS=243} [2024-06-27 22:02:38,556 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 82 predicate places. [2024-06-27 22:02:38,556 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 243 transitions, 2706 flow [2024-06-27 22:02:38,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:38,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:38,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:38,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:02:38,557 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:02:38,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:38,557 INFO L85 PathProgramCache]: Analyzing trace with hash 739748169, now seen corresponding path program 4 times [2024-06-27 22:02:38,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:38,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891693350] [2024-06-27 22:02:38,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:38,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:38,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:40,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:40,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:40,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891693350] [2024-06-27 22:02:40,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891693350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:40,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:40,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:02:40,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23830898] [2024-06-27 22:02:40,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:40,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:02:40,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:40,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:02:40,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:02:40,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:02:40,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 243 transitions, 2706 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:40,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:40,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:02:40,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:41,846 INFO L124 PetriNetUnfolderBase]: 4355/7252 cut-off events. [2024-06-27 22:02:41,846 INFO L125 PetriNetUnfolderBase]: For 81448/81460 co-relation queries the response was YES. [2024-06-27 22:02:41,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35289 conditions, 7252 events. 4355/7252 cut-off events. For 81448/81460 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 46713 event pairs, 1523 based on Foata normal form. 7/7067 useless extension candidates. Maximal degree in co-relation 35226. Up to 6027 conditions per place. [2024-06-27 22:02:41,911 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 204 selfloop transitions, 84 changer transitions 0/298 dead transitions. [2024-06-27 22:02:41,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 298 transitions, 3602 flow [2024-06-27 22:02:41,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:02:41,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:02:41,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-27 22:02:41,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-27 22:02:41,914 INFO L175 Difference]: Start difference. First operand has 136 places, 243 transitions, 2706 flow. Second operand 8 states and 200 transitions. [2024-06-27 22:02:41,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 298 transitions, 3602 flow [2024-06-27 22:02:41,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 298 transitions, 3526 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-27 22:02:41,990 INFO L231 Difference]: Finished difference. Result has 142 places, 265 transitions, 3047 flow [2024-06-27 22:02:41,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2630, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3047, PETRI_PLACES=142, PETRI_TRANSITIONS=265} [2024-06-27 22:02:41,991 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 88 predicate places. [2024-06-27 22:02:41,991 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 265 transitions, 3047 flow [2024-06-27 22:02:41,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:41,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:41,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:41,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:02:41,992 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:02:41,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:41,993 INFO L85 PathProgramCache]: Analyzing trace with hash 751366473, now seen corresponding path program 6 times [2024-06-27 22:02:41,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:41,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173939281] [2024-06-27 22:02:41,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:41,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:42,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:43,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:43,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:43,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173939281] [2024-06-27 22:02:43,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173939281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:43,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:43,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:02:43,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730300478] [2024-06-27 22:02:43,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:43,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:02:43,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:43,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:02:43,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:02:43,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:02:43,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 265 transitions, 3047 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:43,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:43,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:02:43,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:45,413 INFO L124 PetriNetUnfolderBase]: 4392/7307 cut-off events. [2024-06-27 22:02:45,414 INFO L125 PetriNetUnfolderBase]: For 91254/91258 co-relation queries the response was YES. [2024-06-27 22:02:45,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37097 conditions, 7307 events. 4392/7307 cut-off events. For 91254/91258 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 46967 event pairs, 1510 based on Foata normal form. 6/7120 useless extension candidates. Maximal degree in co-relation 37032. Up to 5970 conditions per place. [2024-06-27 22:02:45,473 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 166 selfloop transitions, 142 changer transitions 0/318 dead transitions. [2024-06-27 22:02:45,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 318 transitions, 3997 flow [2024-06-27 22:02:45,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:02:45,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:02:45,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-27 22:02:45,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-27 22:02:45,482 INFO L175 Difference]: Start difference. First operand has 142 places, 265 transitions, 3047 flow. Second operand 8 states and 200 transitions. [2024-06-27 22:02:45,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 318 transitions, 3997 flow [2024-06-27 22:02:45,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 318 transitions, 3861 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-27 22:02:45,565 INFO L231 Difference]: Finished difference. Result has 148 places, 285 transitions, 3452 flow [2024-06-27 22:02:45,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2911, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3452, PETRI_PLACES=148, PETRI_TRANSITIONS=285} [2024-06-27 22:02:45,566 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 94 predicate places. [2024-06-27 22:02:45,566 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 285 transitions, 3452 flow [2024-06-27 22:02:45,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:45,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:45,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:45,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:02:45,567 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:02:45,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:45,567 INFO L85 PathProgramCache]: Analyzing trace with hash 583326286, now seen corresponding path program 1 times [2024-06-27 22:02:45,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:45,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331519598] [2024-06-27 22:02:45,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:45,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:45,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:47,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:47,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:47,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331519598] [2024-06-27 22:02:47,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331519598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:47,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:47,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:02:47,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382734872] [2024-06-27 22:02:47,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:47,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:02:47,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:47,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:02:47,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:02:47,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:02:47,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 285 transitions, 3452 flow. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:47,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:47,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:02:47,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:48,674 INFO L124 PetriNetUnfolderBase]: 5317/9061 cut-off events. [2024-06-27 22:02:48,675 INFO L125 PetriNetUnfolderBase]: For 117725/117823 co-relation queries the response was YES. [2024-06-27 22:02:48,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43501 conditions, 9061 events. 5317/9061 cut-off events. For 117725/117823 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 61556 event pairs, 2148 based on Foata normal form. 44/8789 useless extension candidates. Maximal degree in co-relation 43433. Up to 7362 conditions per place. [2024-06-27 22:02:48,756 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 228 selfloop transitions, 13 changer transitions 0/302 dead transitions. [2024-06-27 22:02:48,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 302 transitions, 4032 flow [2024-06-27 22:02:48,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:02:48,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:02:48,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-06-27 22:02:48,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:02:48,757 INFO L175 Difference]: Start difference. First operand has 148 places, 285 transitions, 3452 flow. Second operand 5 states and 120 transitions. [2024-06-27 22:02:48,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 302 transitions, 4032 flow [2024-06-27 22:02:48,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 302 transitions, 3775 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-06-27 22:02:48,883 INFO L231 Difference]: Finished difference. Result has 149 places, 288 transitions, 3254 flow [2024-06-27 22:02:48,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3195, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3254, PETRI_PLACES=149, PETRI_TRANSITIONS=288} [2024-06-27 22:02:48,884 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 95 predicate places. [2024-06-27 22:02:48,884 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 288 transitions, 3254 flow [2024-06-27 22:02:48,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:48,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:48,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:48,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:02:48,885 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:02:48,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:48,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1141134705, now seen corresponding path program 1 times [2024-06-27 22:02:48,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:48,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084811017] [2024-06-27 22:02:48,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:48,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:48,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:51,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:51,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:51,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084811017] [2024-06-27 22:02:51,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084811017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:51,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:51,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:02:51,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305452749] [2024-06-27 22:02:51,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:51,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:02:51,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:51,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:02:51,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:02:51,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:02:51,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 288 transitions, 3254 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:51,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:51,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:02:51,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:53,086 INFO L124 PetriNetUnfolderBase]: 4706/7510 cut-off events. [2024-06-27 22:02:53,086 INFO L125 PetriNetUnfolderBase]: For 119488/119488 co-relation queries the response was YES. [2024-06-27 22:02:53,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41776 conditions, 7510 events. 4706/7510 cut-off events. For 119488/119488 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 46404 event pairs, 1468 based on Foata normal form. 2/7363 useless extension candidates. Maximal degree in co-relation 41707. Up to 6481 conditions per place. [2024-06-27 22:02:53,146 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 258 selfloop transitions, 81 changer transitions 0/350 dead transitions. [2024-06-27 22:02:53,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 350 transitions, 4477 flow [2024-06-27 22:02:53,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:02:53,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:02:53,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-06-27 22:02:53,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5231481481481481 [2024-06-27 22:02:53,147 INFO L175 Difference]: Start difference. First operand has 149 places, 288 transitions, 3254 flow. Second operand 9 states and 226 transitions. [2024-06-27 22:02:53,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 350 transitions, 4477 flow [2024-06-27 22:02:53,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 350 transitions, 4442 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 22:02:53,238 INFO L231 Difference]: Finished difference. Result has 157 places, 302 transitions, 3712 flow [2024-06-27 22:02:53,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3219, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3712, PETRI_PLACES=157, PETRI_TRANSITIONS=302} [2024-06-27 22:02:53,239 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 103 predicate places. [2024-06-27 22:02:53,239 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 302 transitions, 3712 flow [2024-06-27 22:02:53,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:53,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:53,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:53,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:02:53,239 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:02:53,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:53,240 INFO L85 PathProgramCache]: Analyzing trace with hash 718213144, now seen corresponding path program 1 times [2024-06-27 22:02:53,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:53,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464321106] [2024-06-27 22:02:53,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:53,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:53,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:54,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:54,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:54,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464321106] [2024-06-27 22:02:54,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464321106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:54,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:54,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:02:54,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757269316] [2024-06-27 22:02:54,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:54,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:02:54,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:54,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:02:54,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:02:54,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:02:54,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 302 transitions, 3712 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:54,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:54,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:02:54,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:56,495 INFO L124 PetriNetUnfolderBase]: 4726/7509 cut-off events. [2024-06-27 22:02:56,496 INFO L125 PetriNetUnfolderBase]: For 135475/135475 co-relation queries the response was YES. [2024-06-27 22:02:56,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43838 conditions, 7509 events. 4726/7509 cut-off events. For 135475/135475 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 46124 event pairs, 1449 based on Foata normal form. 2/7363 useless extension candidates. Maximal degree in co-relation 43766. Up to 6570 conditions per place. [2024-06-27 22:02:56,551 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 268 selfloop transitions, 60 changer transitions 0/339 dead transitions. [2024-06-27 22:02:56,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 339 transitions, 4612 flow [2024-06-27 22:02:56,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:02:56,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:02:56,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-27 22:02:56,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026041666666666 [2024-06-27 22:02:56,553 INFO L175 Difference]: Start difference. First operand has 157 places, 302 transitions, 3712 flow. Second operand 8 states and 193 transitions. [2024-06-27 22:02:56,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 339 transitions, 4612 flow [2024-06-27 22:02:56,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 339 transitions, 4394 flow, removed 73 selfloop flow, removed 4 redundant places. [2024-06-27 22:02:56,652 INFO L231 Difference]: Finished difference. Result has 161 places, 306 transitions, 3718 flow [2024-06-27 22:02:56,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3494, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3718, PETRI_PLACES=161, PETRI_TRANSITIONS=306} [2024-06-27 22:02:56,652 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 107 predicate places. [2024-06-27 22:02:56,653 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 306 transitions, 3718 flow [2024-06-27 22:02:56,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:56,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:56,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:56,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:02:56,653 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:02:56,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:56,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1141044495, now seen corresponding path program 2 times [2024-06-27 22:02:56,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:56,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039947208] [2024-06-27 22:02:56,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:56,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:56,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:58,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:58,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:58,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039947208] [2024-06-27 22:02:58,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039947208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:58,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:58,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:02:58,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792488795] [2024-06-27 22:02:58,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:58,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:02:58,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:58,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:02:58,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:02:58,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:02:58,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 306 transitions, 3718 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:58,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:58,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:02:58,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:00,294 INFO L124 PetriNetUnfolderBase]: 4721/7502 cut-off events. [2024-06-27 22:03:00,294 INFO L125 PetriNetUnfolderBase]: For 145545/145545 co-relation queries the response was YES. [2024-06-27 22:03:00,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44807 conditions, 7502 events. 4721/7502 cut-off events. For 145545/145545 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 46048 event pairs, 1441 based on Foata normal form. 2/7356 useless extension candidates. Maximal degree in co-relation 44733. Up to 6549 conditions per place. [2024-06-27 22:03:00,366 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 263 selfloop transitions, 71 changer transitions 0/345 dead transitions. [2024-06-27 22:03:00,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 345 transitions, 4567 flow [2024-06-27 22:03:00,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:03:00,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:03:00,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-27 22:03:00,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515625 [2024-06-27 22:03:00,367 INFO L175 Difference]: Start difference. First operand has 161 places, 306 transitions, 3718 flow. Second operand 8 states and 198 transitions. [2024-06-27 22:03:00,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 345 transitions, 4567 flow [2024-06-27 22:03:00,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 345 transitions, 4354 flow, removed 58 selfloop flow, removed 4 redundant places. [2024-06-27 22:03:00,494 INFO L231 Difference]: Finished difference. Result has 165 places, 307 transitions, 3673 flow [2024-06-27 22:03:00,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3509, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3673, PETRI_PLACES=165, PETRI_TRANSITIONS=307} [2024-06-27 22:03:00,495 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 111 predicate places. [2024-06-27 22:03:00,495 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 307 transitions, 3673 flow [2024-06-27 22:03:00,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:00,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:00,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:00,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:03:00,496 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:03:00,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:00,497 INFO L85 PathProgramCache]: Analyzing trace with hash 718362874, now seen corresponding path program 2 times [2024-06-27 22:03:00,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:00,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243099222] [2024-06-27 22:03:00,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:00,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:00,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:02,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:02,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:02,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243099222] [2024-06-27 22:03:02,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243099222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:02,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:02,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:03:02,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150015272] [2024-06-27 22:03:02,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:02,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:03:02,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:02,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:03:02,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:03:02,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:03:02,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 307 transitions, 3673 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:02,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:02,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:03:02,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:03,650 INFO L124 PetriNetUnfolderBase]: 4785/7631 cut-off events. [2024-06-27 22:03:03,650 INFO L125 PetriNetUnfolderBase]: For 154624/154628 co-relation queries the response was YES. [2024-06-27 22:03:03,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45840 conditions, 7631 events. 4785/7631 cut-off events. For 154624/154628 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 47135 event pairs, 1455 based on Foata normal form. 3/7483 useless extension candidates. Maximal degree in co-relation 45765. Up to 6368 conditions per place. [2024-06-27 22:03:03,718 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 221 selfloop transitions, 131 changer transitions 0/363 dead transitions. [2024-06-27 22:03:03,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 363 transitions, 5085 flow [2024-06-27 22:03:03,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:03:03,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:03:03,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-27 22:03:03,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5286458333333334 [2024-06-27 22:03:03,720 INFO L175 Difference]: Start difference. First operand has 165 places, 307 transitions, 3673 flow. Second operand 8 states and 203 transitions. [2024-06-27 22:03:03,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 363 transitions, 5085 flow [2024-06-27 22:03:03,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 363 transitions, 4950 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 22:03:03,832 INFO L231 Difference]: Finished difference. Result has 167 places, 319 transitions, 4089 flow [2024-06-27 22:03:03,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3538, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4089, PETRI_PLACES=167, PETRI_TRANSITIONS=319} [2024-06-27 22:03:03,833 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 113 predicate places. [2024-06-27 22:03:03,833 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 319 transitions, 4089 flow [2024-06-27 22:03:03,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:03,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:03,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:03,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:03:03,834 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:03:03,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:03,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1863133878, now seen corresponding path program 3 times [2024-06-27 22:03:03,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:03,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845066440] [2024-06-27 22:03:03,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:03,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:03,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:05,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:05,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:05,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845066440] [2024-06-27 22:03:05,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845066440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:05,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:05,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:03:05,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605280658] [2024-06-27 22:03:05,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:05,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:03:05,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:05,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:03:05,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:03:05,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:03:05,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 319 transitions, 4089 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:05,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:05,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:03:05,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:07,156 INFO L124 PetriNetUnfolderBase]: 4954/7897 cut-off events. [2024-06-27 22:03:07,156 INFO L125 PetriNetUnfolderBase]: For 179157/179161 co-relation queries the response was YES. [2024-06-27 22:03:07,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49829 conditions, 7897 events. 4954/7897 cut-off events. For 179157/179161 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 49104 event pairs, 1383 based on Foata normal form. 5/7743 useless extension candidates. Maximal degree in co-relation 49753. Up to 6349 conditions per place. [2024-06-27 22:03:07,237 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 273 selfloop transitions, 109 changer transitions 0/393 dead transitions. [2024-06-27 22:03:07,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 393 transitions, 5893 flow [2024-06-27 22:03:07,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:03:07,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:03:07,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 214 transitions. [2024-06-27 22:03:07,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5572916666666666 [2024-06-27 22:03:07,239 INFO L175 Difference]: Start difference. First operand has 167 places, 319 transitions, 4089 flow. Second operand 8 states and 214 transitions. [2024-06-27 22:03:07,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 393 transitions, 5893 flow [2024-06-27 22:03:07,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 393 transitions, 5678 flow, removed 74 selfloop flow, removed 3 redundant places. [2024-06-27 22:03:07,568 INFO L231 Difference]: Finished difference. Result has 174 places, 333 transitions, 4495 flow [2024-06-27 22:03:07,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3874, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4495, PETRI_PLACES=174, PETRI_TRANSITIONS=333} [2024-06-27 22:03:07,569 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 120 predicate places. [2024-06-27 22:03:07,569 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 333 transitions, 4495 flow [2024-06-27 22:03:07,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:07,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:07,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:07,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:03:07,570 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:03:07,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:07,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1863133723, now seen corresponding path program 3 times [2024-06-27 22:03:07,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:07,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507998099] [2024-06-27 22:03:07,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:07,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:07,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:09,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:09,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:09,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507998099] [2024-06-27 22:03:09,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507998099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:09,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:09,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:03:09,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769222180] [2024-06-27 22:03:09,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:09,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:03:09,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:09,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:03:09,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:03:09,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:03:09,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 333 transitions, 4495 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:09,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:09,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:03:09,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:11,154 INFO L124 PetriNetUnfolderBase]: 4983/7926 cut-off events. [2024-06-27 22:03:11,154 INFO L125 PetriNetUnfolderBase]: For 199989/199993 co-relation queries the response was YES. [2024-06-27 22:03:11,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52529 conditions, 7926 events. 4983/7926 cut-off events. For 199989/199993 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 49174 event pairs, 1383 based on Foata normal form. 6/7779 useless extension candidates. Maximal degree in co-relation 52449. Up to 6797 conditions per place. [2024-06-27 22:03:11,233 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 259 selfloop transitions, 118 changer transitions 0/388 dead transitions. [2024-06-27 22:03:11,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 388 transitions, 5857 flow [2024-06-27 22:03:11,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:03:11,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:03:11,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-27 22:03:11,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234375 [2024-06-27 22:03:11,234 INFO L175 Difference]: Start difference. First operand has 174 places, 333 transitions, 4495 flow. Second operand 8 states and 201 transitions. [2024-06-27 22:03:11,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 388 transitions, 5857 flow [2024-06-27 22:03:11,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 388 transitions, 5781 flow, removed 30 selfloop flow, removed 2 redundant places. [2024-06-27 22:03:11,472 INFO L231 Difference]: Finished difference. Result has 181 places, 345 transitions, 5070 flow [2024-06-27 22:03:11,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4419, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5070, PETRI_PLACES=181, PETRI_TRANSITIONS=345} [2024-06-27 22:03:11,473 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 127 predicate places. [2024-06-27 22:03:11,473 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 345 transitions, 5070 flow [2024-06-27 22:03:11,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:11,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:11,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:11,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:03:11,473 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:03:11,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:11,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1672958180, now seen corresponding path program 4 times [2024-06-27 22:03:11,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:11,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243550708] [2024-06-27 22:03:11,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:11,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:11,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:12,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:12,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:12,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243550708] [2024-06-27 22:03:12,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243550708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:12,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:12,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:03:12,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767240066] [2024-06-27 22:03:12,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:12,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:03:12,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:12,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:03:12,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:03:13,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:03:13,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 345 transitions, 5070 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:13,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:13,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:03:13,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:14,691 INFO L124 PetriNetUnfolderBase]: 5001/7948 cut-off events. [2024-06-27 22:03:14,691 INFO L125 PetriNetUnfolderBase]: For 217274/217274 co-relation queries the response was YES. [2024-06-27 22:03:14,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54543 conditions, 7948 events. 5001/7948 cut-off events. For 217274/217274 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 49226 event pairs, 1405 based on Foata normal form. 2/7797 useless extension candidates. Maximal degree in co-relation 54460. Up to 7011 conditions per place. [2024-06-27 22:03:14,768 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 343 selfloop transitions, 28 changer transitions 0/382 dead transitions. [2024-06-27 22:03:14,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 382 transitions, 6088 flow [2024-06-27 22:03:14,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:03:14,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:03:14,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-27 22:03:14,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973958333333333 [2024-06-27 22:03:14,769 INFO L175 Difference]: Start difference. First operand has 181 places, 345 transitions, 5070 flow. Second operand 8 states and 191 transitions. [2024-06-27 22:03:14,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 382 transitions, 6088 flow [2024-06-27 22:03:15,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 382 transitions, 5898 flow, removed 87 selfloop flow, removed 2 redundant places. [2024-06-27 22:03:15,063 INFO L231 Difference]: Finished difference. Result has 187 places, 349 transitions, 5052 flow [2024-06-27 22:03:15,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4880, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5052, PETRI_PLACES=187, PETRI_TRANSITIONS=349} [2024-06-27 22:03:15,063 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 133 predicate places. [2024-06-27 22:03:15,063 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 349 transitions, 5052 flow [2024-06-27 22:03:15,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:15,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:15,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:15,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:03:15,064 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:03:15,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:15,065 INFO L85 PathProgramCache]: Analyzing trace with hash -820545092, now seen corresponding path program 5 times [2024-06-27 22:03:15,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:15,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709846446] [2024-06-27 22:03:15,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:15,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:15,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:16,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:16,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:16,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709846446] [2024-06-27 22:03:16,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709846446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:16,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:16,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:03:16,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848658030] [2024-06-27 22:03:16,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:16,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:03:16,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:16,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:03:16,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:03:16,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:03:16,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 349 transitions, 5052 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:16,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:16,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:03:16,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:18,500 INFO L124 PetriNetUnfolderBase]: 5019/7980 cut-off events. [2024-06-27 22:03:18,500 INFO L125 PetriNetUnfolderBase]: For 223231/223231 co-relation queries the response was YES. [2024-06-27 22:03:18,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54963 conditions, 7980 events. 5019/7980 cut-off events. For 223231/223231 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 49426 event pairs, 1403 based on Foata normal form. 2/7829 useless extension candidates. Maximal degree in co-relation 54878. Up to 6937 conditions per place. [2024-06-27 22:03:18,582 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 329 selfloop transitions, 55 changer transitions 0/395 dead transitions. [2024-06-27 22:03:18,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 395 transitions, 6294 flow [2024-06-27 22:03:18,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:03:18,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:03:18,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-27 22:03:18,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130208333333334 [2024-06-27 22:03:18,584 INFO L175 Difference]: Start difference. First operand has 187 places, 349 transitions, 5052 flow. Second operand 8 states and 197 transitions. [2024-06-27 22:03:18,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 395 transitions, 6294 flow [2024-06-27 22:03:18,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 395 transitions, 6134 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-06-27 22:03:18,848 INFO L231 Difference]: Finished difference. Result has 188 places, 353 transitions, 5118 flow [2024-06-27 22:03:18,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4892, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5118, PETRI_PLACES=188, PETRI_TRANSITIONS=353} [2024-06-27 22:03:18,849 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 134 predicate places. [2024-06-27 22:03:18,849 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 353 transitions, 5118 flow [2024-06-27 22:03:18,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:18,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:18,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:18,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 22:03:18,850 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:03:18,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:18,850 INFO L85 PathProgramCache]: Analyzing trace with hash 945364714, now seen corresponding path program 6 times [2024-06-27 22:03:18,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:18,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844660378] [2024-06-27 22:03:18,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:18,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:18,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:20,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:20,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:20,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844660378] [2024-06-27 22:03:20,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844660378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:20,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:20,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:03:20,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344042644] [2024-06-27 22:03:20,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:20,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:03:20,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:20,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:03:20,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:03:20,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:03:20,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 353 transitions, 5118 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:20,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:20,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:03:20,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:22,407 INFO L124 PetriNetUnfolderBase]: 5014/7973 cut-off events. [2024-06-27 22:03:22,408 INFO L125 PetriNetUnfolderBase]: For 228965/228965 co-relation queries the response was YES. [2024-06-27 22:03:22,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55062 conditions, 7973 events. 5014/7973 cut-off events. For 228965/228965 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 49460 event pairs, 1403 based on Foata normal form. 2/7822 useless extension candidates. Maximal degree in co-relation 54978. Up to 6932 conditions per place. [2024-06-27 22:03:22,487 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 322 selfloop transitions, 57 changer transitions 0/390 dead transitions. [2024-06-27 22:03:22,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 390 transitions, 6108 flow [2024-06-27 22:03:22,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:03:22,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:03:22,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-27 22:03:22,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052083333333334 [2024-06-27 22:03:22,489 INFO L175 Difference]: Start difference. First operand has 188 places, 353 transitions, 5118 flow. Second operand 8 states and 194 transitions. [2024-06-27 22:03:22,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 390 transitions, 6108 flow [2024-06-27 22:03:22,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 390 transitions, 5758 flow, removed 107 selfloop flow, removed 6 redundant places. [2024-06-27 22:03:22,709 INFO L231 Difference]: Finished difference. Result has 190 places, 353 transitions, 4892 flow [2024-06-27 22:03:22,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4768, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4892, PETRI_PLACES=190, PETRI_TRANSITIONS=353} [2024-06-27 22:03:22,709 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 136 predicate places. [2024-06-27 22:03:22,709 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 353 transitions, 4892 flow [2024-06-27 22:03:22,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:22,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:22,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:22,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 22:03:22,710 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:03:22,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:22,710 INFO L85 PathProgramCache]: Analyzing trace with hash 945364559, now seen corresponding path program 4 times [2024-06-27 22:03:22,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:22,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55478923] [2024-06-27 22:03:22,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:22,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:24,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:24,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:24,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55478923] [2024-06-27 22:03:24,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55478923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:24,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:24,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:03:24,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560982703] [2024-06-27 22:03:24,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:24,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:03:24,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:24,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:03:24,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:03:24,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:03:24,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 353 transitions, 4892 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:24,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:24,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:03:24,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:26,227 INFO L124 PetriNetUnfolderBase]: 5037/8011 cut-off events. [2024-06-27 22:03:26,228 INFO L125 PetriNetUnfolderBase]: For 233698/233698 co-relation queries the response was YES. [2024-06-27 22:03:26,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55062 conditions, 8011 events. 5037/8011 cut-off events. For 233698/233698 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 49674 event pairs, 1409 based on Foata normal form. 2/7859 useless extension candidates. Maximal degree in co-relation 54978. Up to 7050 conditions per place. [2024-06-27 22:03:26,320 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 350 selfloop transitions, 31 changer transitions 0/392 dead transitions. [2024-06-27 22:03:26,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 392 transitions, 5964 flow [2024-06-27 22:03:26,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:03:26,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:03:26,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-27 22:03:26,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:03:26,321 INFO L175 Difference]: Start difference. First operand has 190 places, 353 transitions, 4892 flow. Second operand 8 states and 192 transitions. [2024-06-27 22:03:26,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 392 transitions, 5964 flow [2024-06-27 22:03:26,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 392 transitions, 5845 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 22:03:26,607 INFO L231 Difference]: Finished difference. Result has 193 places, 356 transitions, 4930 flow [2024-06-27 22:03:26,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4773, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4930, PETRI_PLACES=193, PETRI_TRANSITIONS=356} [2024-06-27 22:03:26,608 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 139 predicate places. [2024-06-27 22:03:26,608 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 356 transitions, 4930 flow [2024-06-27 22:03:26,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:26,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:26,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:26,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 22:03:26,609 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:03:26,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:26,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1105291479, now seen corresponding path program 5 times [2024-06-27 22:03:26,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:26,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004014750] [2024-06-27 22:03:26,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:26,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:26,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:28,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:28,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:28,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004014750] [2024-06-27 22:03:28,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004014750] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:28,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:28,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:03:28,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038118725] [2024-06-27 22:03:28,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:28,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:03:28,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:28,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:03:28,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:03:28,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:03:28,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 356 transitions, 4930 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:28,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:28,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:03:28,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:30,087 INFO L124 PetriNetUnfolderBase]: 5180/8212 cut-off events. [2024-06-27 22:03:30,088 INFO L125 PetriNetUnfolderBase]: For 254783/254791 co-relation queries the response was YES. [2024-06-27 22:03:30,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57716 conditions, 8212 events. 5180/8212 cut-off events. For 254783/254791 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 50816 event pairs, 1261 based on Foata normal form. 6/8064 useless extension candidates. Maximal degree in co-relation 57631. Up to 6885 conditions per place. [2024-06-27 22:03:30,173 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 280 selfloop transitions, 154 changer transitions 0/445 dead transitions. [2024-06-27 22:03:30,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 445 transitions, 6775 flow [2024-06-27 22:03:30,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:03:30,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:03:30,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 253 transitions. [2024-06-27 22:03:30,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5270833333333333 [2024-06-27 22:03:30,174 INFO L175 Difference]: Start difference. First operand has 193 places, 356 transitions, 4930 flow. Second operand 10 states and 253 transitions. [2024-06-27 22:03:30,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 445 transitions, 6775 flow [2024-06-27 22:03:30,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 445 transitions, 6585 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-27 22:03:30,453 INFO L231 Difference]: Finished difference. Result has 199 places, 392 transitions, 5788 flow [2024-06-27 22:03:30,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4740, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5788, PETRI_PLACES=199, PETRI_TRANSITIONS=392} [2024-06-27 22:03:30,453 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 145 predicate places. [2024-06-27 22:03:30,453 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 392 transitions, 5788 flow [2024-06-27 22:03:30,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:30,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:30,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:30,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 22:03:30,454 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:03:30,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:30,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1108471545, now seen corresponding path program 6 times [2024-06-27 22:03:30,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:30,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001879302] [2024-06-27 22:03:30,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:30,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:30,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:32,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:32,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:32,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001879302] [2024-06-27 22:03:32,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001879302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:32,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:32,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:03:32,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863485932] [2024-06-27 22:03:32,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:32,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:03:32,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:32,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:03:32,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:03:32,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:03:32,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 392 transitions, 5788 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:32,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:32,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:03:32,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:34,414 INFO L124 PetriNetUnfolderBase]: 4779/7905 cut-off events. [2024-06-27 22:03:34,414 INFO L125 PetriNetUnfolderBase]: For 270345/270364 co-relation queries the response was YES. [2024-06-27 22:03:34,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56703 conditions, 7905 events. 4779/7905 cut-off events. For 270345/270364 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 51257 event pairs, 1565 based on Foata normal form. 13/7661 useless extension candidates. Maximal degree in co-relation 56613. Up to 6348 conditions per place. [2024-06-27 22:03:34,490 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 305 selfloop transitions, 129 changer transitions 0/456 dead transitions. [2024-06-27 22:03:34,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 456 transitions, 7422 flow [2024-06-27 22:03:34,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:03:34,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:03:34,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 232 transitions. [2024-06-27 22:03:34,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2024-06-27 22:03:34,492 INFO L175 Difference]: Start difference. First operand has 199 places, 392 transitions, 5788 flow. Second operand 9 states and 232 transitions. [2024-06-27 22:03:34,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 456 transitions, 7422 flow [2024-06-27 22:03:34,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 456 transitions, 7194 flow, removed 88 selfloop flow, removed 4 redundant places. [2024-06-27 22:03:34,790 INFO L231 Difference]: Finished difference. Result has 206 places, 407 transitions, 6317 flow [2024-06-27 22:03:34,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5600, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6317, PETRI_PLACES=206, PETRI_TRANSITIONS=407} [2024-06-27 22:03:34,790 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 152 predicate places. [2024-06-27 22:03:34,790 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 407 transitions, 6317 flow [2024-06-27 22:03:34,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:34,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:34,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:34,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 22:03:34,791 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:03:34,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:34,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1610362010, now seen corresponding path program 7 times [2024-06-27 22:03:34,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:34,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138005504] [2024-06-27 22:03:34,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:34,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:34,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:36,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:36,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:36,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138005504] [2024-06-27 22:03:36,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138005504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:36,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:36,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:03:36,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544989866] [2024-06-27 22:03:36,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:36,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:03:36,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:36,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:03:36,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:03:36,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:03:36,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 407 transitions, 6317 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:36,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:36,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:03:36,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:39,000 INFO L124 PetriNetUnfolderBase]: 5300/8363 cut-off events. [2024-06-27 22:03:39,000 INFO L125 PetriNetUnfolderBase]: For 295691/295699 co-relation queries the response was YES. [2024-06-27 22:03:39,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63555 conditions, 8363 events. 5300/8363 cut-off events. For 295691/295699 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 51548 event pairs, 1392 based on Foata normal form. 6/8219 useless extension candidates. Maximal degree in co-relation 63462. Up to 7233 conditions per place. [2024-06-27 22:03:39,090 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 352 selfloop transitions, 118 changer transitions 0/481 dead transitions. [2024-06-27 22:03:39,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 481 transitions, 8163 flow [2024-06-27 22:03:39,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:03:39,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:03:39,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 269 transitions. [2024-06-27 22:03:39,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.509469696969697 [2024-06-27 22:03:39,092 INFO L175 Difference]: Start difference. First operand has 206 places, 407 transitions, 6317 flow. Second operand 11 states and 269 transitions. [2024-06-27 22:03:39,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 481 transitions, 8163 flow [2024-06-27 22:03:39,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 481 transitions, 7856 flow, removed 81 selfloop flow, removed 5 redundant places. [2024-06-27 22:03:39,563 INFO L231 Difference]: Finished difference. Result has 213 places, 429 transitions, 6740 flow [2024-06-27 22:03:39,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6010, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6740, PETRI_PLACES=213, PETRI_TRANSITIONS=429} [2024-06-27 22:03:39,563 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 159 predicate places. [2024-06-27 22:03:39,563 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 429 transitions, 6740 flow [2024-06-27 22:03:39,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:39,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:39,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:39,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 22:03:39,564 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:03:39,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:39,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1610357205, now seen corresponding path program 7 times [2024-06-27 22:03:39,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:39,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696822878] [2024-06-27 22:03:39,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:39,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:39,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:41,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:41,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:41,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696822878] [2024-06-27 22:03:41,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696822878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:41,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:41,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:03:41,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369833918] [2024-06-27 22:03:41,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:41,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:03:41,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:41,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:03:41,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:03:42,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:03:42,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 429 transitions, 6740 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:42,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:42,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:03:42,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:43,802 INFO L124 PetriNetUnfolderBase]: 4904/7844 cut-off events. [2024-06-27 22:03:43,802 INFO L125 PetriNetUnfolderBase]: For 294396/294408 co-relation queries the response was YES. [2024-06-27 22:03:43,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59721 conditions, 7844 events. 4904/7844 cut-off events. For 294396/294408 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 49258 event pairs, 1412 based on Foata normal form. 7/7684 useless extension candidates. Maximal degree in co-relation 59626. Up to 6648 conditions per place. [2024-06-27 22:03:43,879 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 344 selfloop transitions, 99 changer transitions 0/466 dead transitions. [2024-06-27 22:03:43,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 466 transitions, 7834 flow [2024-06-27 22:03:43,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:03:43,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:03:43,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-27 22:03:43,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5260416666666666 [2024-06-27 22:03:43,881 INFO L175 Difference]: Start difference. First operand has 213 places, 429 transitions, 6740 flow. Second operand 8 states and 202 transitions. [2024-06-27 22:03:43,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 466 transitions, 7834 flow [2024-06-27 22:03:44,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 466 transitions, 7498 flow, removed 125 selfloop flow, removed 6 redundant places. [2024-06-27 22:03:44,222 INFO L231 Difference]: Finished difference. Result has 215 places, 429 transitions, 6636 flow [2024-06-27 22:03:44,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6410, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6636, PETRI_PLACES=215, PETRI_TRANSITIONS=429} [2024-06-27 22:03:44,223 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 161 predicate places. [2024-06-27 22:03:44,223 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 429 transitions, 6636 flow [2024-06-27 22:03:44,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:44,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:44,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:44,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 22:03:44,224 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:03:44,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:44,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1453632976, now seen corresponding path program 8 times [2024-06-27 22:03:44,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:44,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553812674] [2024-06-27 22:03:44,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:44,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:44,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:46,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:46,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:46,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553812674] [2024-06-27 22:03:46,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553812674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:46,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:46,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:03:46,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186236801] [2024-06-27 22:03:46,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:46,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:03:46,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:46,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:03:46,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:03:46,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:03:46,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 429 transitions, 6636 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:46,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:46,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:03:46,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:48,604 INFO L124 PetriNetUnfolderBase]: 5324/8401 cut-off events. [2024-06-27 22:03:48,604 INFO L125 PetriNetUnfolderBase]: For 315817/315832 co-relation queries the response was YES. [2024-06-27 22:03:48,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64905 conditions, 8401 events. 5324/8401 cut-off events. For 315817/315832 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 51785 event pairs, 1398 based on Foata normal form. 13/8264 useless extension candidates. Maximal degree in co-relation 64808. Up to 7341 conditions per place. [2024-06-27 22:03:48,702 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 372 selfloop transitions, 101 changer transitions 0/484 dead transitions. [2024-06-27 22:03:48,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 484 transitions, 7972 flow [2024-06-27 22:03:48,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:03:48,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:03:48,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 220 transitions. [2024-06-27 22:03:48,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2024-06-27 22:03:48,704 INFO L175 Difference]: Start difference. First operand has 215 places, 429 transitions, 6636 flow. Second operand 9 states and 220 transitions. [2024-06-27 22:03:48,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 484 transitions, 7972 flow [2024-06-27 22:03:49,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 484 transitions, 7680 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-27 22:03:49,141 INFO L231 Difference]: Finished difference. Result has 217 places, 445 transitions, 6774 flow [2024-06-27 22:03:49,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6344, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6774, PETRI_PLACES=217, PETRI_TRANSITIONS=445} [2024-06-27 22:03:49,142 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 163 predicate places. [2024-06-27 22:03:49,142 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 445 transitions, 6774 flow [2024-06-27 22:03:49,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:49,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:49,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:49,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 22:03:49,143 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:03:49,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:49,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1457357626, now seen corresponding path program 9 times [2024-06-27 22:03:49,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:49,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925603772] [2024-06-27 22:03:49,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:49,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:49,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:51,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:51,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:51,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925603772] [2024-06-27 22:03:51,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925603772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:51,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:51,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:03:51,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321417490] [2024-06-27 22:03:51,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:51,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:03:51,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:51,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:03:51,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:03:51,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:03:51,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 445 transitions, 6774 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:51,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:51,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:03:51,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:53,654 INFO L124 PetriNetUnfolderBase]: 5443/8634 cut-off events. [2024-06-27 22:03:53,655 INFO L125 PetriNetUnfolderBase]: For 322931/322942 co-relation queries the response was YES. [2024-06-27 22:03:53,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66168 conditions, 8634 events. 5443/8634 cut-off events. For 322931/322942 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 53827 event pairs, 1377 based on Foata normal form. 9/8485 useless extension candidates. Maximal degree in co-relation 66070. Up to 7034 conditions per place. [2024-06-27 22:03:53,736 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 254 selfloop transitions, 261 changer transitions 0/526 dead transitions. [2024-06-27 22:03:53,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 526 transitions, 8716 flow [2024-06-27 22:03:53,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:03:53,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:03:53,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-27 22:03:53,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5300925925925926 [2024-06-27 22:03:53,738 INFO L175 Difference]: Start difference. First operand has 217 places, 445 transitions, 6774 flow. Second operand 9 states and 229 transitions. [2024-06-27 22:03:53,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 526 transitions, 8716 flow [2024-06-27 22:03:54,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 526 transitions, 8520 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-27 22:03:54,063 INFO L231 Difference]: Finished difference. Result has 222 places, 485 transitions, 7722 flow [2024-06-27 22:03:54,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6578, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=225, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7722, PETRI_PLACES=222, PETRI_TRANSITIONS=485} [2024-06-27 22:03:54,063 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 168 predicate places. [2024-06-27 22:03:54,064 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 485 transitions, 7722 flow [2024-06-27 22:03:54,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:54,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:54,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:54,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 22:03:54,064 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:03:54,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:54,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1457351891, now seen corresponding path program 8 times [2024-06-27 22:03:54,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:54,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760619209] [2024-06-27 22:03:54,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:54,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:54,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:56,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:56,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:56,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760619209] [2024-06-27 22:03:56,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760619209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:56,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:56,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:03:56,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320838726] [2024-06-27 22:03:56,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:56,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:03:56,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:56,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:03:56,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:03:56,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:03:56,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 485 transitions, 7722 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:56,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:56,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:03:56,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:58,052 INFO L124 PetriNetUnfolderBase]: 5063/8132 cut-off events. [2024-06-27 22:03:58,052 INFO L125 PetriNetUnfolderBase]: For 326239/326252 co-relation queries the response was YES. [2024-06-27 22:03:58,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63301 conditions, 8132 events. 5063/8132 cut-off events. For 326239/326252 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 51431 event pairs, 1374 based on Foata normal form. 14/7979 useless extension candidates. Maximal degree in co-relation 63201. Up to 6717 conditions per place. [2024-06-27 22:03:58,148 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 351 selfloop transitions, 160 changer transitions 0/536 dead transitions. [2024-06-27 22:03:58,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 536 transitions, 9436 flow [2024-06-27 22:03:58,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:03:58,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:03:58,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-27 22:03:58,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-06-27 22:03:58,150 INFO L175 Difference]: Start difference. First operand has 222 places, 485 transitions, 7722 flow. Second operand 8 states and 204 transitions. [2024-06-27 22:03:58,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 536 transitions, 9436 flow [2024-06-27 22:03:58,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 536 transitions, 9162 flow, removed 103 selfloop flow, removed 3 redundant places. [2024-06-27 22:03:58,621 INFO L231 Difference]: Finished difference. Result has 229 places, 498 transitions, 8353 flow [2024-06-27 22:03:58,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7468, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8353, PETRI_PLACES=229, PETRI_TRANSITIONS=498} [2024-06-27 22:03:58,621 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 175 predicate places. [2024-06-27 22:03:58,621 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 498 transitions, 8353 flow [2024-06-27 22:03:58,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:58,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:58,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:58,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 22:03:58,622 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:03:58,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:58,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1457352046, now seen corresponding path program 10 times [2024-06-27 22:03:58,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:58,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261222781] [2024-06-27 22:03:58,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:58,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:58,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:00,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:00,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:00,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261222781] [2024-06-27 22:04:00,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261222781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:00,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:00,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:04:00,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009472254] [2024-06-27 22:04:00,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:00,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:04:00,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:00,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:04:00,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:04:00,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:04:00,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 498 transitions, 8353 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:00,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:00,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:04:00,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:03,007 INFO L124 PetriNetUnfolderBase]: 5438/8627 cut-off events. [2024-06-27 22:04:03,007 INFO L125 PetriNetUnfolderBase]: For 356561/356572 co-relation queries the response was YES. [2024-06-27 22:04:03,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69203 conditions, 8627 events. 5438/8627 cut-off events. For 356561/356572 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 53786 event pairs, 1374 based on Foata normal form. 9/8479 useless extension candidates. Maximal degree in co-relation 69099. Up to 7029 conditions per place. [2024-06-27 22:04:03,109 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 273 selfloop transitions, 253 changer transitions 0/537 dead transitions. [2024-06-27 22:04:03,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 537 transitions, 9661 flow [2024-06-27 22:04:03,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:04:03,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:04:03,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-06-27 22:04:03,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-27 22:04:03,111 INFO L175 Difference]: Start difference. First operand has 229 places, 498 transitions, 8353 flow. Second operand 9 states and 228 transitions. [2024-06-27 22:04:03,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 537 transitions, 9661 flow [2024-06-27 22:04:03,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 537 transitions, 9289 flow, removed 146 selfloop flow, removed 3 redundant places. [2024-06-27 22:04:03,771 INFO L231 Difference]: Finished difference. Result has 235 places, 498 transitions, 8501 flow [2024-06-27 22:04:03,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7981, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8501, PETRI_PLACES=235, PETRI_TRANSITIONS=498} [2024-06-27 22:04:03,772 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 181 predicate places. [2024-06-27 22:04:03,772 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 498 transitions, 8501 flow [2024-06-27 22:04:03,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:03,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:03,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:03,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 22:04:03,773 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:04:03,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:03,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1672651342, now seen corresponding path program 1 times [2024-06-27 22:04:03,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:03,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623829332] [2024-06-27 22:04:03,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:03,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:03,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:05,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:05,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:05,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623829332] [2024-06-27 22:04:05,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623829332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:05,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:05,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:04:05,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403034125] [2024-06-27 22:04:05,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:05,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:04:05,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:05,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:04:05,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:04:05,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:04:05,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 498 transitions, 8501 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:05,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:05,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:04:05,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:08,432 INFO L124 PetriNetUnfolderBase]: 6601/10161 cut-off events. [2024-06-27 22:04:08,432 INFO L125 PetriNetUnfolderBase]: For 406386/406386 co-relation queries the response was YES. [2024-06-27 22:04:08,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79508 conditions, 10161 events. 6601/10161 cut-off events. For 406386/406386 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 61721 event pairs, 1850 based on Foata normal form. 4/10012 useless extension candidates. Maximal degree in co-relation 79402. Up to 9162 conditions per place. [2024-06-27 22:04:08,546 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 508 selfloop transitions, 30 changer transitions 0/548 dead transitions. [2024-06-27 22:04:08,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 548 transitions, 10028 flow [2024-06-27 22:04:08,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:04:08,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:04:08,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 203 transitions. [2024-06-27 22:04:08,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4699074074074074 [2024-06-27 22:04:08,548 INFO L175 Difference]: Start difference. First operand has 235 places, 498 transitions, 8501 flow. Second operand 9 states and 203 transitions. [2024-06-27 22:04:08,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 548 transitions, 10028 flow [2024-06-27 22:04:09,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 548 transitions, 9313 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-27 22:04:09,074 INFO L231 Difference]: Finished difference. Result has 236 places, 507 transitions, 8028 flow [2024-06-27 22:04:09,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7792, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8028, PETRI_PLACES=236, PETRI_TRANSITIONS=507} [2024-06-27 22:04:09,075 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 182 predicate places. [2024-06-27 22:04:09,076 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 507 transitions, 8028 flow [2024-06-27 22:04:09,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:09,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:09,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:09,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 22:04:09,076 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:04:09,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:09,077 INFO L85 PathProgramCache]: Analyzing trace with hash 887160142, now seen corresponding path program 1 times [2024-06-27 22:04:09,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:09,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23319531] [2024-06-27 22:04:09,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:09,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:09,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:10,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:10,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:10,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23319531] [2024-06-27 22:04:10,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23319531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:10,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:10,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:04:10,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599942649] [2024-06-27 22:04:10,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:10,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:04:10,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:10,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:04:10,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:04:10,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:04:10,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 507 transitions, 8028 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:10,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:10,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:04:10,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:13,077 INFO L124 PetriNetUnfolderBase]: 6384/10239 cut-off events. [2024-06-27 22:04:13,078 INFO L125 PetriNetUnfolderBase]: For 397948/398163 co-relation queries the response was YES. [2024-06-27 22:04:13,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75161 conditions, 10239 events. 6384/10239 cut-off events. For 397948/398163 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 65564 event pairs, 1918 based on Foata normal form. 85/10037 useless extension candidates. Maximal degree in co-relation 75054. Up to 8709 conditions per place. [2024-06-27 22:04:13,208 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 427 selfloop transitions, 16 changer transitions 0/531 dead transitions. [2024-06-27 22:04:13,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 531 transitions, 9114 flow [2024-06-27 22:04:13,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:04:13,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:04:13,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-27 22:04:13,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965277777777778 [2024-06-27 22:04:13,209 INFO L175 Difference]: Start difference. First operand has 236 places, 507 transitions, 8028 flow. Second operand 6 states and 143 transitions. [2024-06-27 22:04:13,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 531 transitions, 9114 flow [2024-06-27 22:04:13,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 531 transitions, 8969 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-06-27 22:04:13,855 INFO L231 Difference]: Finished difference. Result has 236 places, 510 transitions, 7955 flow [2024-06-27 22:04:13,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7883, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7955, PETRI_PLACES=236, PETRI_TRANSITIONS=510} [2024-06-27 22:04:13,855 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 182 predicate places. [2024-06-27 22:04:13,856 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 510 transitions, 7955 flow [2024-06-27 22:04:13,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:13,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:13,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:13,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 22:04:13,856 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:04:13,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:13,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1804423364, now seen corresponding path program 1 times [2024-06-27 22:04:13,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:13,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442731756] [2024-06-27 22:04:13,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:13,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:13,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:16,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:16,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:16,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442731756] [2024-06-27 22:04:16,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442731756] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:16,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:16,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:04:16,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575641846] [2024-06-27 22:04:16,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:16,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:04:16,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:16,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:04:16,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:04:16,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:04:16,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 510 transitions, 7955 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:16,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:16,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:04:16,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:18,867 INFO L124 PetriNetUnfolderBase]: 6300/9802 cut-off events. [2024-06-27 22:04:18,867 INFO L125 PetriNetUnfolderBase]: For 433669/433702 co-relation queries the response was YES. [2024-06-27 22:04:18,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79923 conditions, 9802 events. 6300/9802 cut-off events. For 433669/433702 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 61110 event pairs, 1556 based on Foata normal form. 15/9605 useless extension candidates. Maximal degree in co-relation 79815. Up to 8507 conditions per place. [2024-06-27 22:04:18,975 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 458 selfloop transitions, 110 changer transitions 0/580 dead transitions. [2024-06-27 22:04:18,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 580 transitions, 9876 flow [2024-06-27 22:04:18,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:04:18,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:04:18,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 252 transitions. [2024-06-27 22:04:18,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-06-27 22:04:18,976 INFO L175 Difference]: Start difference. First operand has 236 places, 510 transitions, 7955 flow. Second operand 10 states and 252 transitions. [2024-06-27 22:04:18,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 580 transitions, 9876 flow [2024-06-27 22:04:19,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 580 transitions, 9840 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-27 22:04:19,497 INFO L231 Difference]: Finished difference. Result has 243 places, 519 transitions, 8434 flow [2024-06-27 22:04:19,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7919, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8434, PETRI_PLACES=243, PETRI_TRANSITIONS=519} [2024-06-27 22:04:19,499 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 189 predicate places. [2024-06-27 22:04:19,499 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 519 transitions, 8434 flow [2024-06-27 22:04:19,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:19,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:19,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:19,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 22:04:19,500 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:04:19,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:19,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1015436558, now seen corresponding path program 2 times [2024-06-27 22:04:19,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:19,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50470216] [2024-06-27 22:04:19,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:19,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:19,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:21,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:21,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:21,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50470216] [2024-06-27 22:04:21,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50470216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:21,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:21,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:04:21,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328393490] [2024-06-27 22:04:21,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:21,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:04:21,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:21,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:04:21,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:04:21,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:04:21,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 519 transitions, 8434 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:21,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:21,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:04:21,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:24,508 INFO L124 PetriNetUnfolderBase]: 6759/10344 cut-off events. [2024-06-27 22:04:24,508 INFO L125 PetriNetUnfolderBase]: For 469430/469434 co-relation queries the response was YES. [2024-06-27 22:04:24,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84602 conditions, 10344 events. 6759/10344 cut-off events. For 469430/469434 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 62497 event pairs, 1829 based on Foata normal form. 8/10218 useless extension candidates. Maximal degree in co-relation 84491. Up to 9278 conditions per place. [2024-06-27 22:04:24,658 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 487 selfloop transitions, 90 changer transitions 0/587 dead transitions. [2024-06-27 22:04:24,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 587 transitions, 10317 flow [2024-06-27 22:04:24,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:04:24,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:04:24,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 235 transitions. [2024-06-27 22:04:24,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-06-27 22:04:24,660 INFO L175 Difference]: Start difference. First operand has 243 places, 519 transitions, 8434 flow. Second operand 10 states and 235 transitions. [2024-06-27 22:04:24,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 587 transitions, 10317 flow [2024-06-27 22:04:25,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 587 transitions, 9954 flow, removed 119 selfloop flow, removed 6 redundant places. [2024-06-27 22:04:25,676 INFO L231 Difference]: Finished difference. Result has 249 places, 532 transitions, 8687 flow [2024-06-27 22:04:25,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8133, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8687, PETRI_PLACES=249, PETRI_TRANSITIONS=532} [2024-06-27 22:04:25,677 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 195 predicate places. [2024-06-27 22:04:25,678 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 532 transitions, 8687 flow [2024-06-27 22:04:25,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:25,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:25,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:25,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 22:04:25,678 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:04:25,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:25,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1015436434, now seen corresponding path program 1 times [2024-06-27 22:04:25,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:25,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895469556] [2024-06-27 22:04:25,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:25,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:25,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:27,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:27,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:27,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895469556] [2024-06-27 22:04:27,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895469556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:27,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:27,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:04:27,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228156322] [2024-06-27 22:04:27,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:27,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:04:27,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:27,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:04:27,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:04:28,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:04:28,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 532 transitions, 8687 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:28,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:28,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:04:28,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:30,615 INFO L124 PetriNetUnfolderBase]: 6533/10194 cut-off events. [2024-06-27 22:04:30,615 INFO L125 PetriNetUnfolderBase]: For 492396/492429 co-relation queries the response was YES. [2024-06-27 22:04:30,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85297 conditions, 10194 events. 6533/10194 cut-off events. For 492396/492429 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 64103 event pairs, 1572 based on Foata normal form. 15/9997 useless extension candidates. Maximal degree in co-relation 85182. Up to 8765 conditions per place. [2024-06-27 22:04:30,743 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 466 selfloop transitions, 128 changer transitions 0/606 dead transitions. [2024-06-27 22:04:30,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 606 transitions, 10787 flow [2024-06-27 22:04:30,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:04:30,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:04:30,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 254 transitions. [2024-06-27 22:04:30,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5291666666666667 [2024-06-27 22:04:30,745 INFO L175 Difference]: Start difference. First operand has 249 places, 532 transitions, 8687 flow. Second operand 10 states and 254 transitions. [2024-06-27 22:04:30,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 606 transitions, 10787 flow [2024-06-27 22:04:31,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 606 transitions, 10509 flow, removed 79 selfloop flow, removed 5 redundant places. [2024-06-27 22:04:31,465 INFO L231 Difference]: Finished difference. Result has 255 places, 541 transitions, 9003 flow [2024-06-27 22:04:31,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8409, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9003, PETRI_PLACES=255, PETRI_TRANSITIONS=541} [2024-06-27 22:04:31,465 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 201 predicate places. [2024-06-27 22:04:31,466 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 541 transitions, 9003 flow [2024-06-27 22:04:31,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:31,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:31,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:31,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 22:04:31,466 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:04:31,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:31,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1012635274, now seen corresponding path program 2 times [2024-06-27 22:04:31,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:31,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431709651] [2024-06-27 22:04:31,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:31,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:31,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:33,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:33,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:33,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431709651] [2024-06-27 22:04:33,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431709651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:33,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:33,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:04:33,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384458253] [2024-06-27 22:04:33,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:33,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:04:33,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:33,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:04:33,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:04:34,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:04:34,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 541 transitions, 9003 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:34,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:34,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:04:34,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:36,461 INFO L124 PetriNetUnfolderBase]: 6538/10178 cut-off events. [2024-06-27 22:04:36,461 INFO L125 PetriNetUnfolderBase]: For 517481/517514 co-relation queries the response was YES. [2024-06-27 22:04:36,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87518 conditions, 10178 events. 6538/10178 cut-off events. For 517481/517514 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 63927 event pairs, 1585 based on Foata normal form. 16/9992 useless extension candidates. Maximal degree in co-relation 87401. Up to 8958 conditions per place. [2024-06-27 22:04:36,601 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 482 selfloop transitions, 97 changer transitions 0/591 dead transitions. [2024-06-27 22:04:36,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 591 transitions, 10577 flow [2024-06-27 22:04:36,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:04:36,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:04:36,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-27 22:04:36,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5162037037037037 [2024-06-27 22:04:36,609 INFO L175 Difference]: Start difference. First operand has 255 places, 541 transitions, 9003 flow. Second operand 9 states and 223 transitions. [2024-06-27 22:04:36,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 591 transitions, 10577 flow [2024-06-27 22:04:37,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 591 transitions, 10380 flow, removed 61 selfloop flow, removed 6 redundant places. [2024-06-27 22:04:37,689 INFO L231 Difference]: Finished difference. Result has 258 places, 544 transitions, 9106 flow [2024-06-27 22:04:37,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8818, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9106, PETRI_PLACES=258, PETRI_TRANSITIONS=544} [2024-06-27 22:04:37,690 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 204 predicate places. [2024-06-27 22:04:37,690 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 544 transitions, 9106 flow [2024-06-27 22:04:37,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:37,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:37,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:37,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 22:04:37,691 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:04:37,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:37,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1012640048, now seen corresponding path program 3 times [2024-06-27 22:04:37,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:37,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098094262] [2024-06-27 22:04:37,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:37,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:37,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:39,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:39,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:39,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098094262] [2024-06-27 22:04:39,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098094262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:39,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:39,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:04:39,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544871746] [2024-06-27 22:04:39,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:39,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:04:39,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:39,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:04:39,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:04:40,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:04:40,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 544 transitions, 9106 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:40,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:40,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:04:40,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:42,881 INFO L124 PetriNetUnfolderBase]: 7000/10700 cut-off events. [2024-06-27 22:04:42,881 INFO L125 PetriNetUnfolderBase]: For 534683/534687 co-relation queries the response was YES. [2024-06-27 22:04:42,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90254 conditions, 10700 events. 7000/10700 cut-off events. For 534683/534687 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 64784 event pairs, 1851 based on Foata normal form. 8/10561 useless extension candidates. Maximal degree in co-relation 90135. Up to 9681 conditions per place. [2024-06-27 22:04:43,038 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 513 selfloop transitions, 69 changer transitions 0/592 dead transitions. [2024-06-27 22:04:43,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 592 transitions, 10722 flow [2024-06-27 22:04:43,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:04:43,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:04:43,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 210 transitions. [2024-06-27 22:04:43,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-27 22:04:43,040 INFO L175 Difference]: Start difference. First operand has 258 places, 544 transitions, 9106 flow. Second operand 9 states and 210 transitions. [2024-06-27 22:04:43,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 592 transitions, 10722 flow [2024-06-27 22:04:44,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 592 transitions, 10342 flow, removed 89 selfloop flow, removed 7 redundant places. [2024-06-27 22:04:44,163 INFO L231 Difference]: Finished difference. Result has 260 places, 548 transitions, 9045 flow [2024-06-27 22:04:44,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8774, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9045, PETRI_PLACES=260, PETRI_TRANSITIONS=548} [2024-06-27 22:04:44,164 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 206 predicate places. [2024-06-27 22:04:44,165 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 548 transitions, 9045 flow [2024-06-27 22:04:44,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:44,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:44,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:44,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 22:04:44,165 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:04:44,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:44,166 INFO L85 PathProgramCache]: Analyzing trace with hash -901817404, now seen corresponding path program 3 times [2024-06-27 22:04:44,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:44,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255180694] [2024-06-27 22:04:44,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:44,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:44,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:46,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:46,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:46,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255180694] [2024-06-27 22:04:46,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255180694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:46,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:46,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:04:46,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799993703] [2024-06-27 22:04:46,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:46,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:04:46,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:46,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:04:46,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:04:46,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:04:46,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 548 transitions, 9045 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:46,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:46,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:04:46,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:49,154 INFO L124 PetriNetUnfolderBase]: 6528/10172 cut-off events. [2024-06-27 22:04:49,155 INFO L125 PetriNetUnfolderBase]: For 532274/532307 co-relation queries the response was YES. [2024-06-27 22:04:49,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87263 conditions, 10172 events. 6528/10172 cut-off events. For 532274/532307 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 63970 event pairs, 1583 based on Foata normal form. 15/9983 useless extension candidates. Maximal degree in co-relation 87143. Up to 8859 conditions per place. [2024-06-27 22:04:49,580 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 483 selfloop transitions, 105 changer transitions 0/600 dead transitions. [2024-06-27 22:04:49,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 600 transitions, 10637 flow [2024-06-27 22:04:49,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:04:49,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:04:49,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-06-27 22:04:49,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5231481481481481 [2024-06-27 22:04:49,581 INFO L175 Difference]: Start difference. First operand has 260 places, 548 transitions, 9045 flow. Second operand 9 states and 226 transitions. [2024-06-27 22:04:49,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 600 transitions, 10637 flow [2024-06-27 22:04:50,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 600 transitions, 10405 flow, removed 67 selfloop flow, removed 5 redundant places. [2024-06-27 22:04:50,482 INFO L231 Difference]: Finished difference. Result has 264 places, 548 transitions, 9034 flow [2024-06-27 22:04:50,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8813, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9034, PETRI_PLACES=264, PETRI_TRANSITIONS=548} [2024-06-27 22:04:50,482 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 210 predicate places. [2024-06-27 22:04:50,483 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 548 transitions, 9034 flow [2024-06-27 22:04:50,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:50,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:50,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:50,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 22:04:50,483 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:04:50,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:50,484 INFO L85 PathProgramCache]: Analyzing trace with hash -897171124, now seen corresponding path program 4 times [2024-06-27 22:04:50,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:50,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578790158] [2024-06-27 22:04:50,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:50,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:50,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:52,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:52,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:52,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578790158] [2024-06-27 22:04:52,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578790158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:52,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:52,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:04:52,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553380545] [2024-06-27 22:04:52,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:52,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:04:52,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:52,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:04:52,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:04:52,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:04:52,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 548 transitions, 9034 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:52,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:52,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:04:52,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:55,332 INFO L124 PetriNetUnfolderBase]: 6682/10422 cut-off events. [2024-06-27 22:04:55,333 INFO L125 PetriNetUnfolderBase]: For 568017/568055 co-relation queries the response was YES. [2024-06-27 22:04:55,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90470 conditions, 10422 events. 6682/10422 cut-off events. For 568017/568055 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 65870 event pairs, 1607 based on Foata normal form. 38/10242 useless extension candidates. Maximal degree in co-relation 90349. Up to 8695 conditions per place. [2024-06-27 22:04:55,493 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 386 selfloop transitions, 227 changer transitions 0/625 dead transitions. [2024-06-27 22:04:55,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 625 transitions, 11504 flow [2024-06-27 22:04:55,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:04:55,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:04:55,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-06-27 22:04:55,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5393518518518519 [2024-06-27 22:04:55,494 INFO L175 Difference]: Start difference. First operand has 264 places, 548 transitions, 9034 flow. Second operand 9 states and 233 transitions. [2024-06-27 22:04:55,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 625 transitions, 11504 flow [2024-06-27 22:04:56,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 625 transitions, 11242 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 22:04:56,476 INFO L231 Difference]: Finished difference. Result has 268 places, 563 transitions, 9918 flow [2024-06-27 22:04:56,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8772, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=215, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9918, PETRI_PLACES=268, PETRI_TRANSITIONS=563} [2024-06-27 22:04:56,476 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 214 predicate places. [2024-06-27 22:04:56,476 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 563 transitions, 9918 flow [2024-06-27 22:04:56,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:56,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:56,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:56,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 22:04:56,477 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:04:56,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:56,477 INFO L85 PathProgramCache]: Analyzing trace with hash -897164180, now seen corresponding path program 1 times [2024-06-27 22:04:56,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:56,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984322480] [2024-06-27 22:04:56,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:56,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:56,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:58,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:58,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:58,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984322480] [2024-06-27 22:04:58,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984322480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:58,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:58,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:04:58,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742408312] [2024-06-27 22:04:58,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:58,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:04:58,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:58,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:04:58,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:04:58,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:04:58,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 563 transitions, 9918 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:58,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:58,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:04:58,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:01,156 INFO L124 PetriNetUnfolderBase]: 7175/10962 cut-off events. [2024-06-27 22:05:01,157 INFO L125 PetriNetUnfolderBase]: For 618698/618706 co-relation queries the response was YES. [2024-06-27 22:05:01,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97533 conditions, 10962 events. 7175/10962 cut-off events. For 618698/618706 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 66610 event pairs, 1830 based on Foata normal form. 7/10808 useless extension candidates. Maximal degree in co-relation 97408. Up to 9792 conditions per place. [2024-06-27 22:05:01,325 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 530 selfloop transitions, 83 changer transitions 0/623 dead transitions. [2024-06-27 22:05:01,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 623 transitions, 11735 flow [2024-06-27 22:05:01,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:05:01,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:05:01,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-06-27 22:05:01,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4976851851851852 [2024-06-27 22:05:01,327 INFO L175 Difference]: Start difference. First operand has 268 places, 563 transitions, 9918 flow. Second operand 9 states and 215 transitions. [2024-06-27 22:05:01,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 623 transitions, 11735 flow [2024-06-27 22:05:02,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 623 transitions, 11409 flow, removed 121 selfloop flow, removed 3 redundant places. [2024-06-27 22:05:02,738 INFO L231 Difference]: Finished difference. Result has 275 places, 576 transitions, 10010 flow [2024-06-27 22:05:02,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9592, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10010, PETRI_PLACES=275, PETRI_TRANSITIONS=576} [2024-06-27 22:05:02,739 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 221 predicate places. [2024-06-27 22:05:02,739 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 576 transitions, 10010 flow [2024-06-27 22:05:02,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:02,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:02,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:02,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 22:05:02,740 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:02,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:02,740 INFO L85 PathProgramCache]: Analyzing trace with hash -897344104, now seen corresponding path program 5 times [2024-06-27 22:05:02,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:02,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188948186] [2024-06-27 22:05:02,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:02,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:02,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:04,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:04,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:04,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188948186] [2024-06-27 22:05:04,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188948186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:04,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:04,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:05:04,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188663320] [2024-06-27 22:05:04,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:04,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:05:04,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:04,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:05:04,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:05:04,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:05:04,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 576 transitions, 10010 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:04,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:04,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:05:04,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:07,838 INFO L124 PetriNetUnfolderBase]: 6709/10458 cut-off events. [2024-06-27 22:05:07,838 INFO L125 PetriNetUnfolderBase]: For 618303/618319 co-relation queries the response was YES. [2024-06-27 22:05:07,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95532 conditions, 10458 events. 6709/10458 cut-off events. For 618303/618319 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 66106 event pairs, 1604 based on Foata normal form. 10/10253 useless extension candidates. Maximal degree in co-relation 95404. Up to 8684 conditions per place. [2024-06-27 22:05:07,978 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 399 selfloop transitions, 231 changer transitions 0/643 dead transitions. [2024-06-27 22:05:07,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 643 transitions, 12184 flow [2024-06-27 22:05:07,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:05:07,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:05:07,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-06-27 22:05:07,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-27 22:05:07,980 INFO L175 Difference]: Start difference. First operand has 275 places, 576 transitions, 10010 flow. Second operand 9 states and 234 transitions. [2024-06-27 22:05:07,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 643 transitions, 12184 flow [2024-06-27 22:05:09,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 643 transitions, 12001 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 22:05:09,152 INFO L231 Difference]: Finished difference. Result has 278 places, 581 transitions, 10436 flow [2024-06-27 22:05:09,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9827, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=226, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10436, PETRI_PLACES=278, PETRI_TRANSITIONS=581} [2024-06-27 22:05:09,153 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 224 predicate places. [2024-06-27 22:05:09,153 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 581 transitions, 10436 flow [2024-06-27 22:05:09,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:09,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:09,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:09,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 22:05:09,154 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:09,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:09,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1922571618, now seen corresponding path program 6 times [2024-06-27 22:05:09,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:09,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34552731] [2024-06-27 22:05:09,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:09,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:09,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:11,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:11,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:11,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34552731] [2024-06-27 22:05:11,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34552731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:11,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:11,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:05:11,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306809410] [2024-06-27 22:05:11,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:11,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:05:11,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:11,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:05:11,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:05:11,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:05:11,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 581 transitions, 10436 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:11,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:11,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:05:11,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:14,063 INFO L124 PetriNetUnfolderBase]: 6773/10560 cut-off events. [2024-06-27 22:05:14,063 INFO L125 PetriNetUnfolderBase]: For 652631/652647 co-relation queries the response was YES. [2024-06-27 22:05:14,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98550 conditions, 10560 events. 6773/10560 cut-off events. For 652631/652647 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 66940 event pairs, 1605 based on Foata normal form. 9/10352 useless extension candidates. Maximal degree in co-relation 98421. Up to 8647 conditions per place. [2024-06-27 22:05:14,228 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 398 selfloop transitions, 236 changer transitions 0/647 dead transitions. [2024-06-27 22:05:14,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 647 transitions, 12624 flow [2024-06-27 22:05:14,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:05:14,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:05:14,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 236 transitions. [2024-06-27 22:05:14,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5462962962962963 [2024-06-27 22:05:14,233 INFO L175 Difference]: Start difference. First operand has 278 places, 581 transitions, 10436 flow. Second operand 9 states and 236 transitions. [2024-06-27 22:05:14,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 647 transitions, 12624 flow [2024-06-27 22:05:15,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 647 transitions, 12254 flow, removed 56 selfloop flow, removed 4 redundant places. [2024-06-27 22:05:15,645 INFO L231 Difference]: Finished difference. Result has 283 places, 584 transitions, 10652 flow [2024-06-27 22:05:15,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=10066, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=233, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10652, PETRI_PLACES=283, PETRI_TRANSITIONS=584} [2024-06-27 22:05:15,646 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 229 predicate places. [2024-06-27 22:05:15,646 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 584 transitions, 10652 flow [2024-06-27 22:05:15,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:15,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:15,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:15,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 22:05:15,647 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:15,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:15,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1922571494, now seen corresponding path program 4 times [2024-06-27 22:05:15,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:15,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367245019] [2024-06-27 22:05:15,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:15,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:15,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:18,329 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 22:05:18,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:18,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367245019] [2024-06-27 22:05:18,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367245019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:18,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:18,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:05:18,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407406962] [2024-06-27 22:05:18,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:18,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:05:18,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:18,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:05:18,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:05:18,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:05:18,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 584 transitions, 10652 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:18,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:18,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:05:18,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:21,616 INFO L124 PetriNetUnfolderBase]: 7350/11230 cut-off events. [2024-06-27 22:05:21,616 INFO L125 PetriNetUnfolderBase]: For 695220/695228 co-relation queries the response was YES. [2024-06-27 22:05:21,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103657 conditions, 11230 events. 7350/11230 cut-off events. For 695220/695228 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 68451 event pairs, 1857 based on Foata normal form. 12/11076 useless extension candidates. Maximal degree in co-relation 103527. Up to 10082 conditions per place. [2024-06-27 22:05:21,770 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 526 selfloop transitions, 100 changer transitions 0/636 dead transitions. [2024-06-27 22:05:21,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 636 transitions, 12488 flow [2024-06-27 22:05:21,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:05:21,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:05:21,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-06-27 22:05:21,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2024-06-27 22:05:21,772 INFO L175 Difference]: Start difference. First operand has 283 places, 584 transitions, 10652 flow. Second operand 9 states and 213 transitions. [2024-06-27 22:05:21,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 636 transitions, 12488 flow [2024-06-27 22:05:23,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 636 transitions, 11945 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-27 22:05:23,449 INFO L231 Difference]: Finished difference. Result has 286 places, 589 transitions, 10501 flow [2024-06-27 22:05:23,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=10114, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10501, PETRI_PLACES=286, PETRI_TRANSITIONS=589} [2024-06-27 22:05:23,450 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 232 predicate places. [2024-06-27 22:05:23,450 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 589 transitions, 10501 flow [2024-06-27 22:05:23,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:23,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:23,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:23,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 22:05:23,451 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:23,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:23,451 INFO L85 PathProgramCache]: Analyzing trace with hash 973764916, now seen corresponding path program 1 times [2024-06-27 22:05:23,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:23,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710133666] [2024-06-27 22:05:23,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:23,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:23,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:25,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:25,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:25,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710133666] [2024-06-27 22:05:25,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710133666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:25,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:25,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:05:25,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265377028] [2024-06-27 22:05:25,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:25,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:05:25,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:25,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:05:25,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:05:25,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:05:25,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 589 transitions, 10501 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:25,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:25,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:05:25,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:28,299 INFO L124 PetriNetUnfolderBase]: 7144/11405 cut-off events. [2024-06-27 22:05:28,299 INFO L125 PetriNetUnfolderBase]: For 680852/681030 co-relation queries the response was YES. [2024-06-27 22:05:28,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99060 conditions, 11405 events. 7144/11405 cut-off events. For 680852/681030 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 74229 event pairs, 1952 based on Foata normal form. 53/11174 useless extension candidates. Maximal degree in co-relation 98928. Up to 9682 conditions per place. [2024-06-27 22:05:28,444 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 476 selfloop transitions, 41 changer transitions 0/620 dead transitions. [2024-06-27 22:05:28,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 620 transitions, 11988 flow [2024-06-27 22:05:28,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:05:28,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:05:28,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-27 22:05:28,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034722222222222 [2024-06-27 22:05:28,445 INFO L175 Difference]: Start difference. First operand has 286 places, 589 transitions, 10501 flow. Second operand 6 states and 145 transitions. [2024-06-27 22:05:28,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 620 transitions, 11988 flow [2024-06-27 22:05:29,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 620 transitions, 11727 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-27 22:05:29,637 INFO L231 Difference]: Finished difference. Result has 287 places, 601 transitions, 10586 flow [2024-06-27 22:05:29,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=10240, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=10586, PETRI_PLACES=287, PETRI_TRANSITIONS=601} [2024-06-27 22:05:29,638 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 233 predicate places. [2024-06-27 22:05:29,638 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 601 transitions, 10586 flow [2024-06-27 22:05:29,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:29,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:29,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:29,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 22:05:29,638 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:29,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:29,638 INFO L85 PathProgramCache]: Analyzing trace with hash 597688486, now seen corresponding path program 2 times [2024-06-27 22:05:29,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:29,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994775096] [2024-06-27 22:05:29,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:29,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:29,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:31,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:31,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:31,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994775096] [2024-06-27 22:05:31,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994775096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:31,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:31,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:05:31,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537702402] [2024-06-27 22:05:31,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:31,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:05:31,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:31,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:05:31,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:05:31,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:05:31,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 601 transitions, 10586 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:31,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:31,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:05:31,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:35,183 INFO L124 PetriNetUnfolderBase]: 7576/11916 cut-off events. [2024-06-27 22:05:35,184 INFO L125 PetriNetUnfolderBase]: For 735906/735946 co-relation queries the response was YES. [2024-06-27 22:05:35,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107550 conditions, 11916 events. 7576/11916 cut-off events. For 735906/735946 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 75983 event pairs, 1939 based on Foata normal form. 2/11644 useless extension candidates. Maximal degree in co-relation 107415. Up to 10498 conditions per place. [2024-06-27 22:05:35,363 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 609 selfloop transitions, 29 changer transitions 0/651 dead transitions. [2024-06-27 22:05:35,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 651 transitions, 12353 flow [2024-06-27 22:05:35,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:05:35,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:05:35,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 200 transitions. [2024-06-27 22:05:35,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-27 22:05:35,365 INFO L175 Difference]: Start difference. First operand has 287 places, 601 transitions, 10586 flow. Second operand 9 states and 200 transitions. [2024-06-27 22:05:35,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 651 transitions, 12353 flow [2024-06-27 22:05:36,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 651 transitions, 12248 flow, removed 51 selfloop flow, removed 1 redundant places. [2024-06-27 22:05:36,810 INFO L231 Difference]: Finished difference. Result has 296 places, 610 transitions, 10699 flow [2024-06-27 22:05:36,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=10481, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=573, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10699, PETRI_PLACES=296, PETRI_TRANSITIONS=610} [2024-06-27 22:05:36,811 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 242 predicate places. [2024-06-27 22:05:36,811 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 610 transitions, 10699 flow [2024-06-27 22:05:36,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:36,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:36,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:36,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 22:05:36,812 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:36,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:36,813 INFO L85 PathProgramCache]: Analyzing trace with hash -758291060, now seen corresponding path program 7 times [2024-06-27 22:05:36,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:36,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596787989] [2024-06-27 22:05:36,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:36,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:36,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:38,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:38,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:38,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596787989] [2024-06-27 22:05:38,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596787989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:38,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:38,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:05:38,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643309042] [2024-06-27 22:05:38,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:38,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:05:38,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:38,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:05:38,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:05:39,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:05:39,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 610 transitions, 10699 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:39,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:39,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:05:39,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:42,838 INFO L124 PetriNetUnfolderBase]: 7155/11442 cut-off events. [2024-06-27 22:05:42,839 INFO L125 PetriNetUnfolderBase]: For 762683/762750 co-relation queries the response was YES. [2024-06-27 22:05:42,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106831 conditions, 11442 events. 7155/11442 cut-off events. For 762683/762750 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 75541 event pairs, 1701 based on Foata normal form. 5/11119 useless extension candidates. Maximal degree in co-relation 106692. Up to 9699 conditions per place. [2024-06-27 22:05:42,995 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 573 selfloop transitions, 75 changer transitions 0/665 dead transitions. [2024-06-27 22:05:42,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 665 transitions, 12639 flow [2024-06-27 22:05:42,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:05:42,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:05:42,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 220 transitions. [2024-06-27 22:05:42,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2024-06-27 22:05:42,996 INFO L175 Difference]: Start difference. First operand has 296 places, 610 transitions, 10699 flow. Second operand 9 states and 220 transitions. [2024-06-27 22:05:42,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 665 transitions, 12639 flow [2024-06-27 22:05:44,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 665 transitions, 12553 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 22:05:44,130 INFO L231 Difference]: Finished difference. Result has 298 places, 613 transitions, 10886 flow [2024-06-27 22:05:44,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=10613, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=535, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10886, PETRI_PLACES=298, PETRI_TRANSITIONS=613} [2024-06-27 22:05:44,131 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 244 predicate places. [2024-06-27 22:05:44,131 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 613 transitions, 10886 flow [2024-06-27 22:05:44,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:44,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:44,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:44,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 22:05:44,131 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:44,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:44,132 INFO L85 PathProgramCache]: Analyzing trace with hash -758464040, now seen corresponding path program 8 times [2024-06-27 22:05:44,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:44,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128442434] [2024-06-27 22:05:44,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:44,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:44,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:46,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:46,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:46,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128442434] [2024-06-27 22:05:46,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128442434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:46,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:46,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:05:46,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015430751] [2024-06-27 22:05:46,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:46,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:05:46,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:46,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:05:46,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:05:46,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:05:46,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 613 transitions, 10886 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:46,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:46,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:05:46,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:50,114 INFO L124 PetriNetUnfolderBase]: 7222/11548 cut-off events. [2024-06-27 22:05:50,115 INFO L125 PetriNetUnfolderBase]: For 799162/799236 co-relation queries the response was YES. [2024-06-27 22:05:50,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109542 conditions, 11548 events. 7222/11548 cut-off events. For 799162/799236 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 76388 event pairs, 1701 based on Foata normal form. 5/11220 useless extension candidates. Maximal degree in co-relation 109402. Up to 9791 conditions per place. [2024-06-27 22:05:50,275 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 568 selfloop transitions, 79 changer transitions 0/664 dead transitions. [2024-06-27 22:05:50,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 664 transitions, 12768 flow [2024-06-27 22:05:50,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:05:50,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:05:50,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 219 transitions. [2024-06-27 22:05:50,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5069444444444444 [2024-06-27 22:05:50,277 INFO L175 Difference]: Start difference. First operand has 298 places, 613 transitions, 10886 flow. Second operand 9 states and 219 transitions. [2024-06-27 22:05:50,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 664 transitions, 12768 flow [2024-06-27 22:05:51,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 664 transitions, 12545 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-27 22:05:51,815 INFO L231 Difference]: Finished difference. Result has 300 places, 616 transitions, 10950 flow [2024-06-27 22:05:51,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=10663, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10950, PETRI_PLACES=300, PETRI_TRANSITIONS=616} [2024-06-27 22:05:51,816 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 246 predicate places. [2024-06-27 22:05:51,816 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 616 transitions, 10950 flow [2024-06-27 22:05:51,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:51,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:51,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:51,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 22:05:51,816 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:51,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:51,817 INFO L85 PathProgramCache]: Analyzing trace with hash -502677336, now seen corresponding path program 3 times [2024-06-27 22:05:51,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:51,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826681095] [2024-06-27 22:05:51,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:51,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:51,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat