./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-atomic/szymanski.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/szymanski.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fced0e87 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-atomic/szymanski.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/szymanski.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.extract-columns-fced0e8-m [2024-01-31 16:01:07,060 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:01:07,193 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:01:07,212 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:01:07,213 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:01:07,258 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:01:07,258 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:01:07,259 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:01:07,259 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:01:07,264 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:01:07,265 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:01:07,265 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:01:07,266 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:01:07,267 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:01:07,268 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:01:07,268 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:01:07,268 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:01:07,268 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:01:07,269 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:01:07,272 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:01:07,272 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:01:07,272 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:01:07,273 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:01:07,273 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:01:07,273 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:01:07,273 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:01:07,274 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:01:07,274 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:01:07,274 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:01:07,274 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:01:07,275 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:01:07,275 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:01:07,276 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:01:07,276 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:01:07,277 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:01:07,277 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:01:07,277 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:01:07,292 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:01:07,292 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:01:07,292 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:01:07,293 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:01:07,293 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:01:07,293 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:01:07,293 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:01:07,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:01:07,734 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:01:07,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:01:07,738 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:01:07,738 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:01:07,739 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/szymanski.i [2024-01-31 16:01:08,935 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:01:09,132 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:01:09,133 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i [2024-01-31 16:01:09,143 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5be9c980f/6d051a46f8894f2fbace04b6c9d120c9/FLAG984c6c377 [2024-01-31 16:01:09,162 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5be9c980f/6d051a46f8894f2fbace04b6c9d120c9 [2024-01-31 16:01:09,164 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:01:09,164 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:01:09,165 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/szymanski.yml/witness.yml [2024-01-31 16:01:09,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:01:09,398 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:01:09,399 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:01:09,399 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:01:09,403 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:01:09,404 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:01:09" (1/2) ... [2024-01-31 16:01:09,404 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5973c2fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:09, skipping insertion in model container [2024-01-31 16:01:09,405 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:01:09" (1/2) ... [2024-01-31 16:01:09,406 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@24ecb184 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:09, skipping insertion in model container [2024-01-31 16:01:09,407 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:01:09" (2/2) ... [2024-01-31 16:01:09,407 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5973c2fc and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:01:09, skipping insertion in model container [2024-01-31 16:01:09,407 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:01:09" (2/2) ... [2024-01-31 16:01:09,408 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:01:10,028 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 16:01:10,030 INFO L98 nessWitnessExtractor]: Location invariant before [L813-L813] (((((((((0 <= flag1) && (0 <= f12)) && (flag1 <= 4)) && (flag1 <= 127)) && (f12 <= 4)) && (f12 <= 127)) && (flag2 == 0)) && ((unsigned long )_ == 0UL)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((f12 == 0 || f12 == 1) || f12 == 2) || f12 == 3) || f12 == 4) [2024-01-31 16:01:10,031 INFO L98 nessWitnessExtractor]: Location invariant before [L712-L712] ((((((((((((0 <= flag1) && (0 <= flag2)) && (0 <= f21)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && (f21 <= 4)) && (f21 <= 127)) && ((unsigned long )_ == 0UL)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4)) && ((((f21 == 0 || f21 == 1) || f21 == 2) || f21 == 3) || f21 == 4) [2024-01-31 16:01:10,031 INFO L98 nessWitnessExtractor]: Location invariant before [L801-L801] ((((0 <= f12) && (f12 <= 1)) && (f12 <= 127)) && ((unsigned long )_ == 0UL)) && ((((f12 == 0 || f12 == 1) || f12 == 2) || f12 == 3) || f12 == 4) [2024-01-31 16:01:10,031 INFO L98 nessWitnessExtractor]: Location invariant before [L773-L773] (((((((((0 <= flag1) && (0 <= f12)) && (flag1 <= 4)) && (flag1 <= 127)) && (f12 <= 2)) && (f12 <= 127)) && (flag2 == 3)) && ((unsigned long )_ == 0UL)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((f12 == 0 || f12 == 1) || f12 == 2) || f12 == 3) || f12 == 4) [2024-01-31 16:01:10,031 INFO L98 nessWitnessExtractor]: Loop invariant at [L749-L749] ((((0 <= f21) && (f21 <= 4)) && (f21 <= 127)) && ((unsigned long )_ == 0UL)) && ((((f21 == 0 || f21 == 1) || f21 == 2) || f21 == 3) || f21 == 4) [2024-01-31 16:01:10,032 INFO L98 nessWitnessExtractor]: Location invariant before [L721-L721] (f21 == 1) && ((unsigned long )_ == 0UL) [2024-01-31 16:01:10,033 INFO L98 nessWitnessExtractor]: Location invariant before [L723-L723] ((((((0 <= flag2) && (flag2 <= 4)) && (flag2 <= 127)) && (flag1 == 2)) && (f21 == 1)) && ((unsigned long )_ == 0UL)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4) [2024-01-31 16:01:10,033 INFO L98 nessWitnessExtractor]: Location invariant before [L783-L783] ((((((((((((0 <= flag1) && (0 <= flag2)) && (0 <= f12)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && (f12 <= 4)) && (f12 <= 127)) && ((unsigned long )_ == 0UL)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4)) && ((((f12 == 0 || f12 == 1) || f12 == 2) || f12 == 3) || f12 == 4) [2024-01-31 16:01:10,033 INFO L98 nessWitnessExtractor]: Location invariant before [L742-L742] ((((((((((((0 <= flag1) && (0 <= flag2)) && (0 <= f21)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && (f21 <= 4)) && (f21 <= 127)) && ((unsigned long )_ == 0UL)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4)) && ((((f21 == 0 || f21 == 1) || f21 == 2) || f21 == 3) || f21 == 4) [2024-01-31 16:01:10,033 INFO L98 nessWitnessExtractor]: Location invariant before [L795-L795] ((((((((((((0 <= flag1) && (0 <= flag2)) && (0 <= f12)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && (f12 <= 4)) && (f12 <= 127)) && ((unsigned long )_ == 0UL)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4)) && ((((f12 == 0 || f12 == 1) || f12 == 2) || f12 == 3) || f12 == 4) [2024-01-31 16:01:10,033 INFO L98 nessWitnessExtractor]: Location invariant before [L725-L725] (((((((((0 <= flag1) && (0 <= flag2)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && (f21 == 1)) && ((unsigned long )_ == 0UL)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4) [2024-01-31 16:01:10,034 INFO L98 nessWitnessExtractor]: Location invariant before [L807-L807] ((((((0 <= f12) && (2 <= f12)) && (f12 <= 3)) && (f12 <= 127)) && ((unsigned long )_ == 0UL)) && (f12 != 0)) && ((((f12 == 0 || f12 == 1) || f12 == 2) || f12 == 3) || f12 == 4) [2024-01-31 16:01:10,034 INFO L98 nessWitnessExtractor]: Location invariant before [L751-L751] ((((((((((((((0 <= flag1) && (0 <= flag2)) && (0 <= f21)) && (2 <= f21)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && (f21 <= 3)) && (f21 <= 127)) && ((unsigned long )_ == 0UL)) && (f21 != 0)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4)) && ((((f21 == 0 || f21 == 1) || f21 == 2) || f21 == 3) || f21 == 4) [2024-01-31 16:01:10,034 INFO L98 nessWitnessExtractor]: Location invariant before [L747-L747] ((((((((((((0 <= flag1) && (0 <= flag2)) && (0 <= f21)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && (f21 <= 1)) && (f21 <= 127)) && ((unsigned long )_ == 0UL)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4)) && ((((f21 == 0 || f21 == 1) || f21 == 2) || f21 == 3) || f21 == 4) [2024-01-31 16:01:10,034 INFO L98 nessWitnessExtractor]: Loop invariant at [L796-L796] ((((0 <= f12) && (f12 <= 4)) && (f12 <= 127)) && ((unsigned long )_ == 0UL)) && ((((f12 == 0 || f12 == 1) || f12 == 2) || f12 == 3) || f12 == 4) [2024-01-31 16:01:10,034 INFO L98 nessWitnessExtractor]: Location invariant before [L772-L772] ((((((((((((0 <= flag1) && (0 <= flag2)) && (0 <= f12)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && (f12 <= 2)) && (f12 <= 127)) && ((unsigned long )_ == 0UL)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4)) && ((((f12 == 0 || f12 == 1) || f12 == 2) || f12 == 3) || f12 == 4) [2024-01-31 16:01:10,035 INFO L98 nessWitnessExtractor]: Location invariant before [L803-L803] ((((0 <= f12) && (f12 <= 1)) && (f12 <= 127)) && ((unsigned long )_ == 0UL)) && ((((f12 == 0 || f12 == 1) || f12 == 2) || f12 == 3) || f12 == 4) [2024-01-31 16:01:10,035 INFO L98 nessWitnessExtractor]: Loop invariant at [L784-L784] ((((0 <= f12) && (f12 <= 4)) && (f12 <= 127)) && ((unsigned long )_ == 0UL)) && ((((f12 == 0 || f12 == 1) || f12 == 2) || f12 == 3) || f12 == 4) [2024-01-31 16:01:10,035 INFO L98 nessWitnessExtractor]: Location invariant before [L802-L802] ((((0 <= f12) && (f12 <= 1)) && (f12 <= 127)) && ((unsigned long )_ == 0UL)) && ((((f12 == 0 || f12 == 1) || f12 == 2) || f12 == 3) || f12 == 4) [2024-01-31 16:01:10,035 INFO L98 nessWitnessExtractor]: Location invariant before [L745-L745] ((((0 <= f21) && (f21 <= 1)) && (f21 <= 127)) && ((unsigned long )_ == 0UL)) && ((((f21 == 0 || f21 == 1) || f21 == 2) || f21 == 3) || f21 == 4) [2024-01-31 16:01:10,035 INFO L98 nessWitnessExtractor]: Location invariant before [L714-L714] ((((0 <= f21) && (f21 <= 2)) && (f21 <= 127)) && ((unsigned long )_ == 0UL)) && ((((f21 == 0 || f21 == 1) || f21 == 2) || f21 == 3) || f21 == 4) [2024-01-31 16:01:10,036 INFO L98 nessWitnessExtractor]: Location invariant before [L740-L740] ((((((0 <= f21) && (2 <= f21)) && (f21 <= 4)) && (f21 <= 127)) && ((unsigned long )_ == 0UL)) && (f21 != 0)) && ((((f21 == 0 || f21 == 1) || f21 == 2) || f21 == 3) || f21 == 4) [2024-01-31 16:01:10,036 INFO L98 nessWitnessExtractor]: Location invariant before [L745-L745] ((((0 <= f21) && (f21 <= 1)) && (f21 <= 127)) && ((unsigned long )_ == 0UL)) && ((((f21 == 0 || f21 == 1) || f21 == 2) || f21 == 3) || f21 == 4) [2024-01-31 16:01:10,036 INFO L98 nessWitnessExtractor]: Location invariant before [L757-L757] ((((0 <= f21) && (f21 <= 4)) && (f21 <= 127)) && ((unsigned long )_ == 0UL)) && ((((f21 == 0 || f21 == 1) || f21 == 2) || f21 == 3) || f21 == 4) [2024-01-31 16:01:10,037 INFO L98 nessWitnessExtractor]: Location invariant before [L804-L804] ((((((((((((0 <= flag1) && (0 <= flag2)) && (0 <= f12)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && (f12 <= 1)) && (f12 <= 127)) && ((unsigned long )_ == 0UL)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4)) && ((((f12 == 0 || f12 == 1) || f12 == 2) || f12 == 3) || f12 == 4) [2024-01-31 16:01:10,037 INFO L98 nessWitnessExtractor]: Location invariant before [L762-L762] (((((0 <= flag1) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 == 1)) && ((unsigned long )_ == 0UL)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4) [2024-01-31 16:01:10,037 INFO L98 nessWitnessExtractor]: Location invariant before [L755-L755] ((((((((((((0 <= flag1) && (0 <= flag2)) && (0 <= f21)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && (f21 <= 4)) && (f21 <= 127)) && ((unsigned long )_ == 0UL)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4)) && ((((f21 == 0 || f21 == 1) || f21 == 2) || f21 == 3) || f21 == 4) [2024-01-31 16:01:10,037 INFO L98 nessWitnessExtractor]: Location invariant before [L736-L736] (((((0 <= f21) && (f21 <= 4)) && (f21 <= 127)) && ((unsigned long )_ == 0UL)) && (f21 != 1)) && (((f21 == 0 || f21 == 2) || f21 == 3) || f21 == 4) [2024-01-31 16:01:10,037 INFO L98 nessWitnessExtractor]: Location invariant before [L781-L781] (f12 == 1) && ((unsigned long )_ == 0UL) [2024-01-31 16:01:10,037 INFO L98 nessWitnessExtractor]: Location invariant before [L752-L752] ((((((((((((0 <= flag1) && (0 <= flag2)) && (0 <= f21)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && (f21 <= 4)) && (f21 <= 127)) && ((unsigned long )_ == 0UL)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4)) && ((((f21 == 0 || f21 == 1) || f21 == 2) || f21 == 3) || f21 == 4) [2024-01-31 16:01:10,038 INFO L98 nessWitnessExtractor]: Loop invariant at [L709-L709] ((((0 <= f21) && (f21 <= 4)) && (f21 <= 127)) && ((unsigned long )_ == 0UL)) && ((((f21 == 0 || f21 == 1) || f21 == 2) || f21 == 3) || f21 == 4) [2024-01-31 16:01:10,038 INFO L98 nessWitnessExtractor]: Location invariant before [L786-L786] (((((((((((((0 <= flag1) && (0 <= flag2)) && (0 <= f12)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && (f12 <= 3)) && (f12 <= 127)) && ((unsigned long )_ == 0UL)) && (f12 != 4)) && (((f12 == 0 || f12 == 1) || f12 == 2) || f12 == 3)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4) [2024-01-31 16:01:10,038 INFO L98 nessWitnessExtractor]: Location invariant before [L763-L763] (unsigned long )_ == 0UL [2024-01-31 16:01:10,038 INFO L98 nessWitnessExtractor]: Location invariant before [L760-L760] (unsigned long )_ == 0UL [2024-01-31 16:01:10,038 INFO L98 nessWitnessExtractor]: Location invariant before [L814-L814] ((((0 <= f12) && (f12 <= 4)) && (f12 <= 127)) && ((unsigned long )_ == 0UL)) && ((((f12 == 0 || f12 == 1) || f12 == 2) || f12 == 3) || f12 == 4) [2024-01-31 16:01:10,038 INFO L98 nessWitnessExtractor]: Location invariant before [L726-L726] ((((((((((((0 <= flag1) && (0 <= flag2)) && (0 <= f21)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && (f21 <= 4)) && (f21 <= 127)) && ((unsigned long )_ == 0UL)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4)) && ((((f21 == 0 || f21 == 1) || f21 == 2) || f21 == 3) || f21 == 4) [2024-01-31 16:01:10,039 INFO L98 nessWitnessExtractor]: Location invariant before [L730-L730] ((((((((((((0 <= flag1) && (0 <= flag2)) && (0 <= f21)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && (f21 <= 4)) && (f21 <= 127)) && ((unsigned long )_ == 0UL)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4)) && ((((f21 == 0 || f21 == 1) || f21 == 2) || f21 == 3) || f21 == 4) [2024-01-31 16:01:10,039 INFO L98 nessWitnessExtractor]: Location invariant before [L771-L771] ((((0 <= f12) && (f12 <= 2)) && (f12 <= 127)) && ((unsigned long )_ == 0UL)) && ((((f12 == 0 || f12 == 1) || f12 == 2) || f12 == 3) || f12 == 4) [2024-01-31 16:01:10,041 INFO L98 nessWitnessExtractor]: Location invariant before [L769-L769] ((((((((((((0 <= flag1) && (0 <= flag2)) && (0 <= f12)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && (f12 <= 4)) && (f12 <= 127)) && ((unsigned long )_ == 0UL)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4)) && ((((f12 == 0 || f12 == 1) || f12 == 2) || f12 == 3) || f12 == 4) [2024-01-31 16:01:10,041 INFO L98 nessWitnessExtractor]: Location invariant before [L741-L741] ((((((((((((((0 <= flag1) && (0 <= flag2)) && (0 <= f21)) && (2 <= f21)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && (f21 <= 4)) && (f21 <= 127)) && ((unsigned long )_ == 0UL)) && (f21 != 0)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4)) && ((((f21 == 0 || f21 == 1) || f21 == 2) || f21 == 3) || f21 == 4) [2024-01-31 16:01:10,042 INFO L98 nessWitnessExtractor]: Location invariant before [L750-L750] ((((((0 <= f21) && (2 <= f21)) && (f21 <= 3)) && (f21 <= 127)) && ((unsigned long )_ == 0UL)) && (f21 != 0)) && ((((f21 == 0 || f21 == 1) || f21 == 2) || f21 == 3) || f21 == 4) [2024-01-31 16:01:10,042 INFO L98 nessWitnessExtractor]: Location invariant before [L790-L790] (((((0 <= f12) && (f12 <= 4)) && (f12 <= 127)) && ((unsigned long )_ == 0UL)) && (f12 != 1)) && (((f12 == 0 || f12 == 2) || f12 == 3) || f12 == 4) [2024-01-31 16:01:10,042 INFO L98 nessWitnessExtractor]: Location invariant before [L818-L818] ((flag1 == 0) && (flag2 == 0)) && (x == 0) [2024-01-31 16:01:10,042 INFO L98 nessWitnessExtractor]: Location invariant before [L738-L738] ((((((((((((0 <= flag1) && (0 <= flag2)) && (0 <= f21)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && (f21 <= 4)) && (f21 <= 127)) && ((unsigned long )_ == 0UL)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4)) && ((((f21 == 0 || f21 == 1) || f21 == 2) || f21 == 3) || f21 == 4) [2024-01-31 16:01:10,043 INFO L98 nessWitnessExtractor]: Location invariant before [L778-L778] (f12 == 1) && ((unsigned long )_ == 0UL) [2024-01-31 16:01:10,043 INFO L98 nessWitnessExtractor]: Location invariant after [L764-L764] ((((((((0 <= flag1) && (0 <= flag2)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && ((unsigned long )_ == 0UL)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4) [2024-01-31 16:01:10,043 INFO L98 nessWitnessExtractor]: Location invariant before [L705-L705] (((((0 <= flag2) && (flag2 <= 4)) && (flag2 <= 127)) && (flag1 == 1)) && ((unsigned long )_ == 0UL)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4) [2024-01-31 16:01:10,043 INFO L98 nessWitnessExtractor]: Location invariant before [L729-L729] (((((((((((((0 <= flag1) && (0 <= flag2)) && (0 <= f21)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && (f21 <= 3)) && (f21 <= 127)) && ((unsigned long )_ == 0UL)) && (f21 != 4)) && (((f21 == 0 || f21 == 1) || f21 == 2) || f21 == 3)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4) [2024-01-31 16:01:10,043 INFO L98 nessWitnessExtractor]: Location invariant before [L767-L767] ((((((0 <= f12) && (3 <= f12)) && (f12 <= 4)) && (f12 <= 127)) && ((unsigned long )_ == 0UL)) && (f12 != 0)) && ((((f12 == 0 || f12 == 1) || f12 == 2) || f12 == 3) || f12 == 4) [2024-01-31 16:01:10,044 INFO L98 nessWitnessExtractor]: Location invariant before [L719-L719] ((((((((((((0 <= flag1) && (0 <= flag2)) && (0 <= f21)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && (f21 <= 4)) && (f21 <= 127)) && ((unsigned long )_ == 0UL)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4)) && ((((f21 == 0 || f21 == 1) || f21 == 2) || f21 == 3) || f21 == 4) [2024-01-31 16:01:10,044 INFO L98 nessWitnessExtractor]: Location invariant before [L782-L782] (((((((((0 <= flag1) && (0 <= flag2)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && (f12 == 1)) && ((unsigned long )_ == 0UL)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4) [2024-01-31 16:01:10,044 INFO L98 nessWitnessExtractor]: Location invariant before [L779-L779] (((((((((0 <= flag1) && (0 <= flag2)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && (f12 == 1)) && ((unsigned long )_ == 0UL)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4) [2024-01-31 16:01:10,044 INFO L98 nessWitnessExtractor]: Location invariant before [L703-L703] (unsigned long )_ == 0UL [2024-01-31 16:01:10,045 INFO L98 nessWitnessExtractor]: Location invariant before [L710-L710] ((((((0 <= f21) && (3 <= f21)) && (f21 <= 4)) && (f21 <= 127)) && ((unsigned long )_ == 0UL)) && (f21 != 0)) && ((((f21 == 0 || f21 == 1) || f21 == 2) || f21 == 3) || f21 == 4) [2024-01-31 16:01:10,045 INFO L98 nessWitnessExtractor]: Location invariant before [L744-L744] ((((0 <= f21) && (f21 <= 1)) && (f21 <= 127)) && ((unsigned long )_ == 0UL)) && ((((f21 == 0 || f21 == 1) || f21 == 2) || f21 == 3) || f21 == 4) [2024-01-31 16:01:10,046 INFO L98 nessWitnessExtractor]: Location invariant before [L809-L809] ((((((((((((0 <= flag1) && (0 <= flag2)) && (0 <= f12)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && (f12 <= 4)) && (f12 <= 127)) && ((unsigned long )_ == 0UL)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4)) && ((((f12 == 0 || f12 == 1) || f12 == 2) || f12 == 3) || f12 == 4) [2024-01-31 16:01:10,046 INFO L98 nessWitnessExtractor]: Location invariant before [L764-L764] ((((((((0 <= flag1) && (0 <= flag2)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && ((unsigned long )_ == 0UL)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4) [2024-01-31 16:01:10,046 INFO L98 nessWitnessExtractor]: Location invariant before [L715-L715] ((((((((((((0 <= flag1) && (0 <= flag2)) && (0 <= f21)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && (f21 <= 2)) && (f21 <= 127)) && ((unsigned long )_ == 0UL)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4)) && ((((f21 == 0 || f21 == 1) || f21 == 2) || f21 == 3) || f21 == 4) [2024-01-31 16:01:10,047 INFO L98 nessWitnessExtractor]: Location invariant before [L754-L754] ((((0 <= f21) && (f21 <= 4)) && (f21 <= 127)) && ((unsigned long )_ == 0UL)) && ((((f21 == 0 || f21 == 1) || f21 == 2) || f21 == 3) || f21 == 4) [2024-01-31 16:01:10,047 INFO L98 nessWitnessExtractor]: Location invariant before [L761-L761] ((((((((0 <= flag1) && (0 <= flag2)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && ((unsigned long )_ == 0UL)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4) [2024-01-31 16:01:10,047 INFO L98 nessWitnessExtractor]: Location invariant before [L777-L777] ((((0 <= f12) && (f12 <= 4)) && (f12 <= 127)) && ((unsigned long )_ == 0UL)) && ((((f12 == 0 || f12 == 1) || f12 == 2) || f12 == 3) || f12 == 4) [2024-01-31 16:01:10,047 INFO L98 nessWitnessExtractor]: Location invariant before [L718-L718] ((((((((((((0 <= flag1) && (0 <= flag2)) && (0 <= f21)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && (f21 <= 2)) && (f21 <= 127)) && ((unsigned long )_ == 0UL)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4)) && ((((f21 == 0 || f21 == 1) || f21 == 2) || f21 == 3) || f21 == 4) [2024-01-31 16:01:10,047 INFO L98 nessWitnessExtractor]: Location invariant before [L706-L706] (unsigned long )_ == 0UL [2024-01-31 16:01:10,047 INFO L98 nessWitnessExtractor]: Location invariant before [L768-L768] ((((((((((((((0 <= flag1) && (0 <= flag2)) && (0 <= f12)) && (3 <= f12)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && (f12 <= 4)) && (f12 <= 127)) && ((unsigned long )_ == 0UL)) && (f12 != 0)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4)) && ((((f12 == 0 || f12 == 1) || f12 == 2) || f12 == 3) || f12 == 4) [2024-01-31 16:01:10,047 INFO L98 nessWitnessExtractor]: Location invariant before [L737-L737] (((((((((((((0 <= flag1) && (0 <= flag2)) && (0 <= f21)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && (f21 <= 4)) && (f21 <= 127)) && ((unsigned long )_ == 0UL)) && (f21 != 1)) && (((f21 == 0 || f21 == 2) || f21 == 3) || f21 == 4)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4) [2024-01-31 16:01:10,048 INFO L98 nessWitnessExtractor]: Location invariant before [L798-L798] ((((((((((((((0 <= flag1) && (0 <= flag2)) && (0 <= f12)) && (2 <= f12)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && (f12 <= 4)) && (f12 <= 127)) && ((unsigned long )_ == 0UL)) && (f12 != 0)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4)) && ((((f12 == 0 || f12 == 1) || f12 == 2) || f12 == 3) || f12 == 4) [2024-01-31 16:01:10,048 INFO L98 nessWitnessExtractor]: Location invariant before [L735-L735] ((((((((((0 <= flag2) && (0 <= f21)) && (flag2 <= 4)) && (flag2 <= 127)) && (f21 <= 4)) && (f21 <= 127)) && (flag1 == 4)) && ((unsigned long )_ == 0UL)) && (f21 != 1)) && (((f21 == 0 || f21 == 2) || f21 == 3) || f21 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4) [2024-01-31 16:01:10,048 INFO L98 nessWitnessExtractor]: Location invariant before [L720-L720] ((((0 <= f21) && (f21 <= 4)) && (f21 <= 127)) && ((unsigned long )_ == 0UL)) && ((((f21 == 0 || f21 == 1) || f21 == 2) || f21 == 3) || f21 == 4) [2024-01-31 16:01:10,048 INFO L98 nessWitnessExtractor]: Location invariant before [L707-L707] ((((((((0 <= flag1) && (0 <= flag2)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && ((unsigned long )_ == 0UL)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4) [2024-01-31 16:01:10,048 INFO L98 nessWitnessExtractor]: Location invariant before [L734-L734] (((((((((((((0 <= flag1) && (0 <= flag2)) && (0 <= f21)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && (f21 <= 4)) && (f21 <= 127)) && ((unsigned long )_ == 0UL)) && (f21 != 1)) && (((f21 == 0 || f21 == 2) || f21 == 3) || f21 == 4)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4) [2024-01-31 16:01:10,048 INFO L98 nessWitnessExtractor]: Location invariant before [L799-L799] ((((((((((((0 <= flag1) && (0 <= flag2)) && (0 <= f12)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && (f12 <= 4)) && (f12 <= 127)) && ((unsigned long )_ == 0UL)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4)) && ((((f12 == 0 || f12 == 1) || f12 == 2) || f12 == 3) || f12 == 4) [2024-01-31 16:01:10,049 INFO L98 nessWitnessExtractor]: Location invariant before [L812-L812] ((((((((((((0 <= flag1) && (0 <= flag2)) && (0 <= f12)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && (f12 <= 4)) && (f12 <= 127)) && ((unsigned long )_ == 0UL)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4)) && ((((f12 == 0 || f12 == 1) || f12 == 2) || f12 == 3) || f12 == 4) [2024-01-31 16:01:10,049 INFO L98 nessWitnessExtractor]: Location invariant before [L717-L717] ((((0 <= f21) && (f21 <= 2)) && (f21 <= 127)) && ((unsigned long )_ == 0UL)) && ((((f21 == 0 || f21 == 1) || f21 == 2) || f21 == 3) || f21 == 4) [2024-01-31 16:01:10,049 INFO L98 nessWitnessExtractor]: Location invariant before [L708-L708] ((((((((((((0 <= flag1) && (0 <= flag2)) && (0 <= f21)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && (f21 <= 4)) && (f21 <= 127)) && ((unsigned long )_ == 0UL)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4)) && ((((f21 == 0 || f21 == 1) || f21 == 2) || f21 == 3) || f21 == 4) [2024-01-31 16:01:10,049 INFO L98 nessWitnessExtractor]: Location invariant before [L746-L746] ((((0 <= f21) && (f21 <= 1)) && (f21 <= 127)) && ((unsigned long )_ == 0UL)) && ((((f21 == 0 || f21 == 1) || f21 == 2) || f21 == 3) || f21 == 4) [2024-01-31 16:01:10,049 INFO L98 nessWitnessExtractor]: Location invariant before [L793-L793] (((((0 <= f12) && (f12 <= 4)) && (f12 <= 127)) && ((unsigned long )_ == 0UL)) && (f12 != 1)) && (((f12 == 0 || f12 == 2) || f12 == 3) || f12 == 4) [2024-01-31 16:01:10,049 INFO L98 nessWitnessExtractor]: Location invariant before [L774-L774] ((((0 <= f12) && (f12 <= 2)) && (f12 <= 127)) && ((unsigned long )_ == 0UL)) && ((((f12 == 0 || f12 == 1) || f12 == 2) || f12 == 3) || f12 == 4) [2024-01-31 16:01:10,050 INFO L98 nessWitnessExtractor]: Location invariant before [L776-L776] ((((((((((((0 <= flag1) && (0 <= flag2)) && (0 <= f12)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && (f12 <= 4)) && (f12 <= 127)) && ((unsigned long )_ == 0UL)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4)) && ((((f12 == 0 || f12 == 1) || f12 == 2) || f12 == 3) || f12 == 4) [2024-01-31 16:01:10,050 INFO L98 nessWitnessExtractor]: Location invariant after [L745-L745] ((((0 <= f21) && (f21 <= 1)) && (f21 <= 127)) && ((unsigned long )_ == 0UL)) && ((((f21 == 0 || f21 == 1) || f21 == 2) || f21 == 3) || f21 == 4) [2024-01-31 16:01:10,050 INFO L98 nessWitnessExtractor]: Location invariant before [L704-L704] ((((((((0 <= flag1) && (0 <= flag2)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && ((unsigned long )_ == 0UL)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4) [2024-01-31 16:01:10,050 INFO L98 nessWitnessExtractor]: Loop invariant at [L806-L806] ((((0 <= f12) && (f12 <= 4)) && (f12 <= 127)) && ((unsigned long )_ == 0UL)) && ((((f12 == 0 || f12 == 1) || f12 == 2) || f12 == 3) || f12 == 4) [2024-01-31 16:01:10,050 INFO L98 nessWitnessExtractor]: Location invariant before [L802-L802] ((((0 <= f12) && (f12 <= 1)) && (f12 <= 127)) && ((unsigned long )_ == 0UL)) && ((((f12 == 0 || f12 == 1) || f12 == 2) || f12 == 3) || f12 == 4) [2024-01-31 16:01:10,050 INFO L98 nessWitnessExtractor]: Location invariant before [L797-L797] ((((((0 <= f12) && (2 <= f12)) && (f12 <= 4)) && (f12 <= 127)) && ((unsigned long )_ == 0UL)) && (f12 != 0)) && ((((f12 == 0 || f12 == 1) || f12 == 2) || f12 == 3) || f12 == 4) [2024-01-31 16:01:10,050 INFO L98 nessWitnessExtractor]: Location invariant before [L724-L724] (f21 == 1) && ((unsigned long )_ == 0UL) [2024-01-31 16:01:10,051 INFO L98 nessWitnessExtractor]: Location invariant before [L722-L722] (((((((((0 <= flag1) && (0 <= flag2)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && (f21 == 1)) && ((unsigned long )_ == 0UL)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4) [2024-01-31 16:01:10,051 INFO L98 nessWitnessExtractor]: Location invariant before [L808-L808] ((((((((((((((0 <= flag1) && (0 <= flag2)) && (0 <= f12)) && (2 <= f12)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && (f12 <= 3)) && (f12 <= 127)) && ((unsigned long )_ == 0UL)) && (f12 != 0)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4)) && ((((f12 == 0 || f12 == 1) || f12 == 2) || f12 == 3) || f12 == 4) [2024-01-31 16:01:10,051 INFO L98 nessWitnessExtractor]: Location invariant before [L785-L785] (((((0 <= f12) && (f12 <= 3)) && (f12 <= 127)) && ((unsigned long )_ == 0UL)) && (f12 != 4)) && (((f12 == 0 || f12 == 1) || f12 == 2) || f12 == 3) [2024-01-31 16:01:10,051 INFO L98 nessWitnessExtractor]: Location invariant before [L811-L811] ((((0 <= f12) && (f12 <= 4)) && (f12 <= 127)) && ((unsigned long )_ == 0UL)) && ((((f12 == 0 || f12 == 1) || f12 == 2) || f12 == 3) || f12 == 4) [2024-01-31 16:01:10,051 INFO L98 nessWitnessExtractor]: Location invariant before [L711-L711] ((((((((((((((0 <= flag1) && (0 <= flag2)) && (0 <= f21)) && (3 <= f21)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && (f21 <= 4)) && (f21 <= 127)) && ((unsigned long )_ == 0UL)) && (f21 != 0)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4)) && ((((f21 == 0 || f21 == 1) || f21 == 2) || f21 == 3) || f21 == 4) [2024-01-31 16:01:10,051 INFO L98 nessWitnessExtractor]: Location invariant before [L805-L805] ((((((((((((0 <= flag1) && (0 <= flag2)) && (0 <= f12)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && (f12 <= 4)) && (f12 <= 127)) && ((unsigned long )_ == 0UL)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4)) && ((((f12 == 0 || f12 == 1) || f12 == 2) || f12 == 3) || f12 == 4) [2024-01-31 16:01:10,051 INFO L98 nessWitnessExtractor]: Location invariant before [L733-L733] (((((0 <= f21) && (f21 <= 4)) && (f21 <= 127)) && ((unsigned long )_ == 0UL)) && (f21 != 1)) && (((f21 == 0 || f21 == 2) || f21 == 3) || f21 == 4) [2024-01-31 16:01:10,052 INFO L98 nessWitnessExtractor]: Location invariant before [L756-L756] (((((((((0 <= flag2) && (0 <= f21)) && (flag2 <= 4)) && (flag2 <= 127)) && (f21 <= 4)) && (f21 <= 127)) && (flag1 == 0)) && ((unsigned long )_ == 0UL)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4)) && ((((f21 == 0 || f21 == 1) || f21 == 2) || f21 == 3) || f21 == 4) [2024-01-31 16:01:10,052 INFO L98 nessWitnessExtractor]: Loop invariant at [L739-L739] ((((0 <= f21) && (f21 <= 4)) && (f21 <= 127)) && ((unsigned long )_ == 0UL)) && ((((f21 == 0 || f21 == 1) || f21 == 2) || f21 == 3) || f21 == 4) [2024-01-31 16:01:10,052 INFO L98 nessWitnessExtractor]: Location invariant before [L791-L791] (((((((((((((0 <= flag1) && (0 <= flag2)) && (0 <= f12)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && (f12 <= 4)) && (f12 <= 127)) && ((unsigned long )_ == 0UL)) && (f12 != 1)) && (((f12 == 0 || f12 == 2) || f12 == 3) || f12 == 4)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4) [2024-01-31 16:01:10,052 INFO L98 nessWitnessExtractor]: Location invariant before [L794-L794] (((((((((((((0 <= flag1) && (0 <= flag2)) && (0 <= f12)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && (f12 <= 4)) && (f12 <= 127)) && ((unsigned long )_ == 0UL)) && (f12 != 1)) && (((f12 == 0 || f12 == 2) || f12 == 3) || f12 == 4)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4) [2024-01-31 16:01:10,052 INFO L98 nessWitnessExtractor]: Location invariant after [L802-L802] ((((0 <= f12) && (f12 <= 1)) && (f12 <= 127)) && ((unsigned long )_ == 0UL)) && ((((f12 == 0 || f12 == 1) || f12 == 2) || f12 == 3) || f12 == 4) [2024-01-31 16:01:10,052 INFO L98 nessWitnessExtractor]: Location invariant before [L780-L780] ((((((0 <= flag1) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 == 2)) && (f12 == 1)) && ((unsigned long )_ == 0UL)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4) [2024-01-31 16:01:10,053 INFO L98 nessWitnessExtractor]: Loop invariant at [L727-L727] ((((0 <= f21) && (f21 <= 4)) && (f21 <= 127)) && ((unsigned long )_ == 0UL)) && ((((f21 == 0 || f21 == 1) || f21 == 2) || f21 == 3) || f21 == 4) [2024-01-31 16:01:10,053 INFO L98 nessWitnessExtractor]: Location invariant before [L775-L775] ((((((((((((0 <= flag1) && (0 <= flag2)) && (0 <= f12)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && (f12 <= 2)) && (f12 <= 127)) && ((unsigned long )_ == 0UL)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4)) && ((((f12 == 0 || f12 == 1) || f12 == 2) || f12 == 3) || f12 == 4) [2024-01-31 16:01:10,054 INFO L98 nessWitnessExtractor]: Location invariant before [L787-L787] ((((((((((((0 <= flag1) && (0 <= flag2)) && (0 <= f12)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && (f12 <= 4)) && (f12 <= 127)) && ((unsigned long )_ == 0UL)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4)) && ((((f12 == 0 || f12 == 1) || f12 == 2) || f12 == 3) || f12 == 4) [2024-01-31 16:01:10,054 INFO L98 nessWitnessExtractor]: Location invariant before [L792-L792] ((((((((((0 <= flag1) && (0 <= f12)) && (flag1 <= 4)) && (flag1 <= 127)) && (f12 <= 4)) && (f12 <= 127)) && (flag2 == 4)) && ((unsigned long )_ == 0UL)) && (f12 != 1)) && (((f12 == 0 || f12 == 2) || f12 == 3) || f12 == 4)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4) [2024-01-31 16:01:10,054 INFO L98 nessWitnessExtractor]: Location invariant after [L707-L707] ((((((((0 <= flag1) && (0 <= flag2)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && ((unsigned long )_ == 0UL)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4) [2024-01-31 16:01:10,054 INFO L98 nessWitnessExtractor]: Location invariant before [L728-L728] (((((0 <= f21) && (f21 <= 3)) && (f21 <= 127)) && ((unsigned long )_ == 0UL)) && (f21 != 4)) && (((f21 == 0 || f21 == 1) || f21 == 2) || f21 == 3) [2024-01-31 16:01:10,054 INFO L98 nessWitnessExtractor]: Loop invariant at [L766-L766] ((((0 <= f12) && (f12 <= 4)) && (f12 <= 127)) && ((unsigned long )_ == 0UL)) && ((((f12 == 0 || f12 == 1) || f12 == 2) || f12 == 3) || f12 == 4) [2024-01-31 16:01:10,055 INFO L98 nessWitnessExtractor]: Location invariant before [L716-L716] (((((((((0 <= flag2) && (0 <= f21)) && (flag2 <= 4)) && (flag2 <= 127)) && (f21 <= 2)) && (f21 <= 127)) && (flag1 == 3)) && ((unsigned long )_ == 0UL)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4)) && ((((f21 == 0 || f21 == 1) || f21 == 2) || f21 == 3) || f21 == 4) [2024-01-31 16:01:10,055 INFO L98 nessWitnessExtractor]: Location invariant before [L748-L748] ((((((((((((0 <= flag1) && (0 <= flag2)) && (0 <= f21)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && (f21 <= 4)) && (f21 <= 127)) && ((unsigned long )_ == 0UL)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4)) && ((((f21 == 0 || f21 == 1) || f21 == 2) || f21 == 3) || f21 == 4) [2024-01-31 16:01:10,055 INFO L98 nessWitnessExtractor]: Location invariant before [L765-L765] ((((((((((((0 <= flag1) && (0 <= flag2)) && (0 <= f12)) && (flag1 <= 4)) && (flag1 <= 127)) && (flag2 <= 4)) && (flag2 <= 127)) && (f12 <= 4)) && (f12 <= 127)) && ((unsigned long )_ == 0UL)) && ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4)) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4)) && ((((f12 == 0 || f12 == 1) || f12 == 2) || f12 == 3) || f12 == 4) [2024-01-31 16:01:10,105 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:01:10,346 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[31505,31518] [2024-01-31 16:01:10,358 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[32915,32928] [2024-01-31 16:01:10,368 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:01:10,381 INFO L204 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-31 16:01:10,472 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-01-31 16:01:10,472 WARN L424 MainDispatcher]: Unable to annotate f21 = flag2 with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-31 16:01:10,565 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[31505,31518] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-31 16:01:10,603 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-01-31 16:01:10,604 WARN L424 MainDispatcher]: Unable to annotate f12 = flag1 with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-31 16:01:10,657 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[32915,32928] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-31 16:01:10,683 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:01:10,714 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:01:10,715 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:01:10 WrapperNode [2024-01-31 16:01:10,715 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:01:10,716 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:01:10,717 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:01:10,717 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:01:10,722 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 31.01 04:01:10" (1/1) ... [2024-01-31 16:01:10,758 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 31.01 04:01:10" (1/1) ... [2024-01-31 16:01:10,780 INFO L138 Inliner]: procedures = 170, calls = 74, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2024-01-31 16:01:10,780 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:01:10,781 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:01:10,781 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:01:10,781 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:01:10,790 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:01:10" (1/1) ... [2024-01-31 16:01:10,791 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:01:10" (1/1) ... [2024-01-31 16:01:10,809 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:01:10" (1/1) ... [2024-01-31 16:01:10,833 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-01-31 16:01:10,839 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:01:10" (1/1) ... [2024-01-31 16:01:10,840 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:01:10" (1/1) ... [2024-01-31 16:01:10,879 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:01:10" (1/1) ... [2024-01-31 16:01:10,894 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:01:10" (1/1) ... [2024-01-31 16:01:10,898 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:01:10" (1/1) ... [2024-01-31 16:01:10,905 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:01:10" (1/1) ... [2024-01-31 16:01:10,913 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:01:10,918 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:01:10,919 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:01:10,919 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:01:10,920 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:01:10" (1/1) ... [2024-01-31 16:01:10,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:01:10,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:01:10,973 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) [2024-01-31 16:01:10,979 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 [2024-01-31 16:01:11,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 16:01:11,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 16:01:11,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 16:01:11,027 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2024-01-31 16:01:11,027 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2024-01-31 16:01:11,027 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-01-31 16:01:11,027 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-01-31 16:01:11,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:01:11,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:01:11,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:01:11,028 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 16:01:11,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:01:11,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:01:11,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:01:11,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:01:11,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:01:11,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:01:11,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 16:01:11,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:01:11,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:01:11,032 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 16:01:11,184 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:01:11,186 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:01:11,886 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:01:11,886 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:01:12,158 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:01:12,159 INFO L320 CfgBuilder]: Removed 8 assume(true) statements. [2024-01-31 16:01:12,160 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:01:12 BoogieIcfgContainer [2024-01-31 16:01:12,160 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:01:12,163 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:01:12,166 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:01:12,168 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:01:12,169 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:01:09" (1/4) ... [2024-01-31 16:01:12,169 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@742e1438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:01:12, skipping insertion in model container [2024-01-31 16:01:12,174 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:01:09" (2/4) ... [2024-01-31 16:01:12,174 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@742e1438 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:01:12, skipping insertion in model container [2024-01-31 16:01:12,174 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:01:10" (3/4) ... [2024-01-31 16:01:12,174 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@742e1438 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:01:12, skipping insertion in model container [2024-01-31 16:01:12,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:01:12" (4/4) ... [2024-01-31 16:01:12,176 INFO L112 eAbstractionObserver]: Analyzing ICFG szymanski.i [2024-01-31 16:01:12,190 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:01:12,191 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 103 error locations. [2024-01-31 16:01:12,191 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:01:12,434 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-31 16:01:12,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 212 places, 225 transitions, 464 flow [2024-01-31 16:01:12,548 INFO L124 PetriNetUnfolderBase]: 20/223 cut-off events. [2024-01-31 16:01:12,549 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-31 16:01:12,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 223 events. 20/223 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 915 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 217. Up to 3 conditions per place. [2024-01-31 16:01:12,558 INFO L82 GeneralOperation]: Start removeDead. Operand has 212 places, 225 transitions, 464 flow [2024-01-31 16:01:12,569 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 208 places, 221 transitions, 451 flow [2024-01-31 16:01:12,581 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:01:12,588 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;@671405a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:01:12,588 INFO L358 AbstractCegarLoop]: Starting to check reachability of 207 error locations. [2024-01-31 16:01:12,590 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:01:12,590 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-31 16:01:12,590 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:01:12,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:12,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-31 16:01:12,591 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 204 more)] === [2024-01-31 16:01:12,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:12,595 INFO L85 PathProgramCache]: Analyzing trace with hash 25144, now seen corresponding path program 1 times [2024-01-31 16:01:12,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:12,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438876097] [2024-01-31 16:01:12,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:12,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:12,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:01:12,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:01:12,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:01:12,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438876097] [2024-01-31 16:01:12,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438876097] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:01:12,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:01:12,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:01:12,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017615641] [2024-01-31 16:01:12,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:01:12,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:01:12,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:01:12,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:01:12,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:01:12,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 225 [2024-01-31 16:01:12,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 221 transitions, 451 flow. Second operand has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:01:12,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:01:12,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 225 [2024-01-31 16:01:12,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:01:13,894 INFO L124 PetriNetUnfolderBase]: 2873/7744 cut-off events. [2024-01-31 16:01:13,895 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2024-01-31 16:01:13,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12329 conditions, 7744 events. 2873/7744 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 74443 event pairs, 1359 based on Foata normal form. 577/5146 useless extension candidates. Maximal degree in co-relation 12053. Up to 4475 conditions per place. [2024-01-31 16:01:13,942 INFO L140 encePairwiseOnDemand]: 185/225 looper letters, 74 selfloop transitions, 3 changer transitions 0/191 dead transitions. [2024-01-31 16:01:13,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 191 transitions, 548 flow [2024-01-31 16:01:13,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:01:13,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:01:13,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 464 transitions. [2024-01-31 16:01:13,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6874074074074074 [2024-01-31 16:01:13,955 INFO L175 Difference]: Start difference. First operand has 208 places, 221 transitions, 451 flow. Second operand 3 states and 464 transitions. [2024-01-31 16:01:13,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 191 transitions, 548 flow [2024-01-31 16:01:13,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 191 transitions, 542 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-31 16:01:13,963 INFO L231 Difference]: Finished difference. Result has 181 places, 186 transitions, 389 flow [2024-01-31 16:01:13,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=389, PETRI_PLACES=181, PETRI_TRANSITIONS=186} [2024-01-31 16:01:13,968 INFO L281 CegarLoopForPetriNet]: 208 programPoint places, -27 predicate places. [2024-01-31 16:01:13,968 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 186 transitions, 389 flow [2024-01-31 16:01:13,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:01:13,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:13,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-31 16:01:13,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:01:13,969 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 204 more)] === [2024-01-31 16:01:13,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:13,970 INFO L85 PathProgramCache]: Analyzing trace with hash 750143852, now seen corresponding path program 1 times [2024-01-31 16:01:13,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:13,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728754172] [2024-01-31 16:01:13,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:13,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:14,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:01:14,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:01:14,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:01:14,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728754172] [2024-01-31 16:01:14,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728754172] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:01:14,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:01:14,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:01:14,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046905061] [2024-01-31 16:01:14,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:01:14,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:01:14,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:01:14,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:01:14,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:01:14,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 225 [2024-01-31 16:01:14,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 186 transitions, 389 flow. Second operand has 4 states, 4 states have (on average 117.25) internal successors, (469), 4 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:01:14,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:01:14,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 225 [2024-01-31 16:01:14,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:01:15,118 INFO L124 PetriNetUnfolderBase]: 2778/7483 cut-off events. [2024-01-31 16:01:15,118 INFO L125 PetriNetUnfolderBase]: For 111/111 co-relation queries the response was YES. [2024-01-31 16:01:15,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12016 conditions, 7483 events. 2778/7483 cut-off events. For 111/111 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 71076 event pairs, 1380 based on Foata normal form. 112/4551 useless extension candidates. Maximal degree in co-relation 11598. Up to 4253 conditions per place. [2024-01-31 16:01:15,163 INFO L140 encePairwiseOnDemand]: 221/225 looper letters, 102 selfloop transitions, 2 changer transitions 0/217 dead transitions. [2024-01-31 16:01:15,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 217 transitions, 664 flow [2024-01-31 16:01:15,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:01:15,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:01:15,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 568 transitions. [2024-01-31 16:01:15,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6311111111111111 [2024-01-31 16:01:15,168 INFO L175 Difference]: Start difference. First operand has 181 places, 186 transitions, 389 flow. Second operand 4 states and 568 transitions. [2024-01-31 16:01:15,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 217 transitions, 664 flow [2024-01-31 16:01:15,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 217 transitions, 660 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:01:15,173 INFO L231 Difference]: Finished difference. Result has 181 places, 184 transitions, 386 flow [2024-01-31 16:01:15,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=386, PETRI_PLACES=181, PETRI_TRANSITIONS=184} [2024-01-31 16:01:15,174 INFO L281 CegarLoopForPetriNet]: 208 programPoint places, -27 predicate places. [2024-01-31 16:01:15,174 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 184 transitions, 386 flow [2024-01-31 16:01:15,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.25) internal successors, (469), 4 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:01:15,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:15,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-31 16:01:15,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:01:15,175 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 204 more)] === [2024-01-31 16:01:15,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:15,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1779623919, now seen corresponding path program 1 times [2024-01-31 16:01:15,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:15,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380968490] [2024-01-31 16:01:15,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:15,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:15,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:01:15,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:01:15,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:01:15,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380968490] [2024-01-31 16:01:15,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380968490] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:01:15,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:01:15,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:01:15,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843471215] [2024-01-31 16:01:15,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:01:15,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:01:15,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:01:15,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:01:15,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:01:15,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 225 [2024-01-31 16:01:15,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 184 transitions, 386 flow. Second operand has 4 states, 4 states have (on average 96.5) internal successors, (386), 4 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:01:15,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:01:15,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 225 [2024-01-31 16:01:15,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:01:16,328 INFO L124 PetriNetUnfolderBase]: 4650/9940 cut-off events. [2024-01-31 16:01:16,328 INFO L125 PetriNetUnfolderBase]: For 201/206 co-relation queries the response was YES. [2024-01-31 16:01:16,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17629 conditions, 9940 events. 4650/9940 cut-off events. For 201/206 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 87560 event pairs, 2305 based on Foata normal form. 9/7137 useless extension candidates. Maximal degree in co-relation 16924. Up to 7344 conditions per place. [2024-01-31 16:01:16,372 INFO L140 encePairwiseOnDemand]: 220/225 looper letters, 98 selfloop transitions, 5 changer transitions 0/195 dead transitions. [2024-01-31 16:01:16,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 195 transitions, 622 flow [2024-01-31 16:01:16,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:01:16,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:01:16,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 484 transitions. [2024-01-31 16:01:16,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5377777777777778 [2024-01-31 16:01:16,374 INFO L175 Difference]: Start difference. First operand has 181 places, 184 transitions, 386 flow. Second operand 4 states and 484 transitions. [2024-01-31 16:01:16,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 195 transitions, 622 flow [2024-01-31 16:01:16,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 195 transitions, 618 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:01:16,377 INFO L231 Difference]: Finished difference. Result has 184 places, 186 transitions, 409 flow [2024-01-31 16:01:16,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=409, PETRI_PLACES=184, PETRI_TRANSITIONS=186} [2024-01-31 16:01:16,378 INFO L281 CegarLoopForPetriNet]: 208 programPoint places, -24 predicate places. [2024-01-31 16:01:16,378 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 186 transitions, 409 flow [2024-01-31 16:01:16,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.5) internal successors, (386), 4 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:01:16,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:16,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:01:16,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:01:16,379 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 204 more)] === [2024-01-31 16:01:16,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:16,380 INFO L85 PathProgramCache]: Analyzing trace with hash -675040572, now seen corresponding path program 1 times [2024-01-31 16:01:16,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:16,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073406731] [2024-01-31 16:01:16,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:16,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:16,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:01:16,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:01:16,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:01:16,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073406731] [2024-01-31 16:01:16,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073406731] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:01:16,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:01:16,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:01:16,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514577637] [2024-01-31 16:01:16,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:01:16,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:01:16,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:01:16,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:01:16,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:01:16,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 225 [2024-01-31 16:01:16,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 186 transitions, 409 flow. Second operand has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:01:16,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:01:16,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 225 [2024-01-31 16:01:16,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:01:17,460 INFO L124 PetriNetUnfolderBase]: 2802/7545 cut-off events. [2024-01-31 16:01:17,460 INFO L125 PetriNetUnfolderBase]: For 206/211 co-relation queries the response was YES. [2024-01-31 16:01:17,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12208 conditions, 7545 events. 2802/7545 cut-off events. For 206/211 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 71906 event pairs, 73 based on Foata normal form. 117/4679 useless extension candidates. Maximal degree in co-relation 12191. Up to 4210 conditions per place. [2024-01-31 16:01:17,504 INFO L140 encePairwiseOnDemand]: 221/225 looper letters, 131 selfloop transitions, 2 changer transitions 0/245 dead transitions. [2024-01-31 16:01:17,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 245 transitions, 804 flow [2024-01-31 16:01:17,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:01:17,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:01:17,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 596 transitions. [2024-01-31 16:01:17,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6622222222222223 [2024-01-31 16:01:17,506 INFO L175 Difference]: Start difference. First operand has 184 places, 186 transitions, 409 flow. Second operand 4 states and 596 transitions. [2024-01-31 16:01:17,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 245 transitions, 804 flow [2024-01-31 16:01:17,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 245 transitions, 792 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:01:17,510 INFO L231 Difference]: Finished difference. Result has 183 places, 184 transitions, 401 flow [2024-01-31 16:01:17,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=401, PETRI_PLACES=183, PETRI_TRANSITIONS=184} [2024-01-31 16:01:17,511 INFO L281 CegarLoopForPetriNet]: 208 programPoint places, -25 predicate places. [2024-01-31 16:01:17,511 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 184 transitions, 401 flow [2024-01-31 16:01:17,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:01:17,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:17,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:01:17,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:01:17,512 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 204 more)] === [2024-01-31 16:01:17,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:17,513 INFO L85 PathProgramCache]: Analyzing trace with hash 548579629, now seen corresponding path program 1 times [2024-01-31 16:01:17,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:17,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088014012] [2024-01-31 16:01:17,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:17,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:17,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:01:17,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:01:17,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:01:17,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088014012] [2024-01-31 16:01:17,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088014012] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:01:17,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:01:17,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:01:17,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775683546] [2024-01-31 16:01:17,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:01:17,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:01:17,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:01:17,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:01:17,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:01:17,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 225 [2024-01-31 16:01:17,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 184 transitions, 401 flow. Second operand has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:01:17,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:01:17,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 225 [2024-01-31 16:01:17,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:01:18,559 INFO L124 PetriNetUnfolderBase]: 4688/9668 cut-off events. [2024-01-31 16:01:18,559 INFO L125 PetriNetUnfolderBase]: For 268/273 co-relation queries the response was YES. [2024-01-31 16:01:18,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17573 conditions, 9668 events. 4688/9668 cut-off events. For 268/273 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 82988 event pairs, 2439 based on Foata normal form. 7/7061 useless extension candidates. Maximal degree in co-relation 17557. Up to 7493 conditions per place. [2024-01-31 16:01:18,595 INFO L140 encePairwiseOnDemand]: 220/225 looper letters, 94 selfloop transitions, 6 changer transitions 0/191 dead transitions. [2024-01-31 16:01:18,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 191 transitions, 624 flow [2024-01-31 16:01:18,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:01:18,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:01:18,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 480 transitions. [2024-01-31 16:01:18,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-01-31 16:01:18,597 INFO L175 Difference]: Start difference. First operand has 183 places, 184 transitions, 401 flow. Second operand 4 states and 480 transitions. [2024-01-31 16:01:18,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 191 transitions, 624 flow [2024-01-31 16:01:18,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 191 transitions, 618 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:01:18,600 INFO L231 Difference]: Finished difference. Result has 186 places, 186 transitions, 428 flow [2024-01-31 16:01:18,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=428, PETRI_PLACES=186, PETRI_TRANSITIONS=186} [2024-01-31 16:01:18,601 INFO L281 CegarLoopForPetriNet]: 208 programPoint places, -22 predicate places. [2024-01-31 16:01:18,601 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 186 transitions, 428 flow [2024-01-31 16:01:18,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:01:18,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:18,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:01:18,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 16:01:18,602 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 204 more)] === [2024-01-31 16:01:18,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:18,602 INFO L85 PathProgramCache]: Analyzing trace with hash 821634994, now seen corresponding path program 1 times [2024-01-31 16:01:18,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:18,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911484596] [2024-01-31 16:01:18,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:18,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:18,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:01:18,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:01:18,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:01:18,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911484596] [2024-01-31 16:01:18,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911484596] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:01:18,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:01:18,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:01:18,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855675768] [2024-01-31 16:01:18,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:01:18,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:01:18,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:01:18,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:01:18,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:01:18,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 225 [2024-01-31 16:01:18,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 186 transitions, 428 flow. Second operand has 5 states, 5 states have (on average 96.6) internal successors, (483), 5 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:01:18,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:01:18,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 225 [2024-01-31 16:01:18,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:01:19,873 INFO L124 PetriNetUnfolderBase]: 4879/10720 cut-off events. [2024-01-31 16:01:19,873 INFO L125 PetriNetUnfolderBase]: For 347/363 co-relation queries the response was YES. [2024-01-31 16:01:19,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19084 conditions, 10720 events. 4879/10720 cut-off events. For 347/363 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 95612 event pairs, 1835 based on Foata normal form. 3/7665 useless extension candidates. Maximal degree in co-relation 18381. Up to 6262 conditions per place. [2024-01-31 16:01:19,933 INFO L140 encePairwiseOnDemand]: 184/225 looper letters, 172 selfloop transitions, 48 changer transitions 0/311 dead transitions. [2024-01-31 16:01:19,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 311 transitions, 1139 flow [2024-01-31 16:01:19,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:01:19,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:01:19,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 692 transitions. [2024-01-31 16:01:19,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6151111111111112 [2024-01-31 16:01:19,935 INFO L175 Difference]: Start difference. First operand has 186 places, 186 transitions, 428 flow. Second operand 5 states and 692 transitions. [2024-01-31 16:01:19,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 311 transitions, 1139 flow [2024-01-31 16:01:19,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 311 transitions, 1134 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:01:19,940 INFO L231 Difference]: Finished difference. Result has 191 places, 226 transitions, 732 flow [2024-01-31 16:01:19,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=732, PETRI_PLACES=191, PETRI_TRANSITIONS=226} [2024-01-31 16:01:19,943 INFO L281 CegarLoopForPetriNet]: 208 programPoint places, -17 predicate places. [2024-01-31 16:01:19,944 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 226 transitions, 732 flow [2024-01-31 16:01:19,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.6) internal successors, (483), 5 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:01:19,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:19,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:01:19,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 16:01:19,945 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 204 more)] === [2024-01-31 16:01:19,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:19,945 INFO L85 PathProgramCache]: Analyzing trace with hash -299117968, now seen corresponding path program 1 times [2024-01-31 16:01:19,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:19,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609917655] [2024-01-31 16:01:19,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:19,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:19,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:01:20,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:01:20,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:01:20,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609917655] [2024-01-31 16:01:20,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609917655] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:01:20,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:01:20,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:01:20,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334046065] [2024-01-31 16:01:20,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:01:20,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:01:20,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:01:20,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:01:20,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:01:20,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 225 [2024-01-31 16:01:20,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 226 transitions, 732 flow. Second operand has 5 states, 5 states have (on average 75.8) internal successors, (379), 5 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:01:20,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:01:20,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 225 [2024-01-31 16:01:20,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:01:22,835 INFO L124 PetriNetUnfolderBase]: 8744/18289 cut-off events. [2024-01-31 16:01:22,836 INFO L125 PetriNetUnfolderBase]: For 2828/2930 co-relation queries the response was YES. [2024-01-31 16:01:22,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36815 conditions, 18289 events. 8744/18289 cut-off events. For 2828/2930 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 171880 event pairs, 3151 based on Foata normal form. 1107/15100 useless extension candidates. Maximal degree in co-relation 36175. Up to 8780 conditions per place. [2024-01-31 16:01:23,000 INFO L140 encePairwiseOnDemand]: 163/225 looper letters, 316 selfloop transitions, 59 changer transitions 0/445 dead transitions. [2024-01-31 16:01:23,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 445 transitions, 2159 flow [2024-01-31 16:01:23,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:01:23,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:01:23,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 832 transitions. [2024-01-31 16:01:23,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6162962962962963 [2024-01-31 16:01:23,006 INFO L175 Difference]: Start difference. First operand has 191 places, 226 transitions, 732 flow. Second operand 6 states and 832 transitions. [2024-01-31 16:01:23,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 445 transitions, 2159 flow [2024-01-31 16:01:23,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 445 transitions, 2151 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-01-31 16:01:23,048 INFO L231 Difference]: Finished difference. Result has 200 places, 261 transitions, 1260 flow [2024-01-31 16:01:23,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1260, PETRI_PLACES=200, PETRI_TRANSITIONS=261} [2024-01-31 16:01:23,050 INFO L281 CegarLoopForPetriNet]: 208 programPoint places, -8 predicate places. [2024-01-31 16:01:23,050 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 261 transitions, 1260 flow [2024-01-31 16:01:23,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.8) internal successors, (379), 5 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:01:23,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:23,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:01:23,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 16:01:23,051 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr2Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 204 more)] === [2024-01-31 16:01:23,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:23,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1095924688, now seen corresponding path program 1 times [2024-01-31 16:01:23,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:23,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956548149] [2024-01-31 16:01:23,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:23,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:23,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:01:23,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:01:23,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:01:23,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956548149] [2024-01-31 16:01:23,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956548149] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:01:23,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:01:23,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:01:23,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783871630] [2024-01-31 16:01:23,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:01:23,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:01:23,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:01:23,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:01:23,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:01:23,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 225 [2024-01-31 16:01:23,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 261 transitions, 1260 flow. Second operand has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:01:23,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:01:23,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 225 [2024-01-31 16:01:23,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:01:25,117 INFO L124 PetriNetUnfolderBase]: 7666/17092 cut-off events. [2024-01-31 16:01:25,117 INFO L125 PetriNetUnfolderBase]: For 8849/12054 co-relation queries the response was YES. [2024-01-31 16:01:25,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37329 conditions, 17092 events. 7666/17092 cut-off events. For 8849/12054 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 164925 event pairs, 2951 based on Foata normal form. 15/14927 useless extension candidates. Maximal degree in co-relation 37301. Up to 9471 conditions per place. [2024-01-31 16:01:25,300 INFO L140 encePairwiseOnDemand]: 184/225 looper letters, 209 selfloop transitions, 53 changer transitions 0/386 dead transitions. [2024-01-31 16:01:25,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 386 transitions, 2095 flow [2024-01-31 16:01:25,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:01:25,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:01:25,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 690 transitions. [2024-01-31 16:01:25,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6133333333333333 [2024-01-31 16:01:25,306 INFO L175 Difference]: Start difference. First operand has 200 places, 261 transitions, 1260 flow. Second operand 5 states and 690 transitions. [2024-01-31 16:01:25,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 386 transitions, 2095 flow [2024-01-31 16:01:25,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 386 transitions, 2089 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-01-31 16:01:25,345 INFO L231 Difference]: Finished difference. Result has 206 places, 302 transitions, 1605 flow [2024-01-31 16:01:25,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=1258, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1605, PETRI_PLACES=206, PETRI_TRANSITIONS=302} [2024-01-31 16:01:25,346 INFO L281 CegarLoopForPetriNet]: 208 programPoint places, -2 predicate places. [2024-01-31 16:01:25,346 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 302 transitions, 1605 flow [2024-01-31 16:01:25,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:01:25,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:25,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:01:25,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 16:01:25,347 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 204 more)] === [2024-01-31 16:01:25,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:25,347 INFO L85 PathProgramCache]: Analyzing trace with hash 287909813, now seen corresponding path program 1 times [2024-01-31 16:01:25,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:25,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046972829] [2024-01-31 16:01:25,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:25,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:25,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:01:25,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:01:25,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:01:25,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046972829] [2024-01-31 16:01:25,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046972829] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:01:25,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:01:25,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:01:25,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572844518] [2024-01-31 16:01:25,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:01:25,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:01:25,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:01:25,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:01:25,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:01:25,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 225 [2024-01-31 16:01:25,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 302 transitions, 1605 flow. Second operand has 5 states, 5 states have (on average 96.8) internal successors, (484), 5 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:01:25,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:01:25,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 225 [2024-01-31 16:01:25,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:01:27,324 INFO L124 PetriNetUnfolderBase]: 7630/16322 cut-off events. [2024-01-31 16:01:27,325 INFO L125 PetriNetUnfolderBase]: For 11952/15731 co-relation queries the response was YES. [2024-01-31 16:01:27,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40475 conditions, 16322 events. 7630/16322 cut-off events. For 11952/15731 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 152888 event pairs, 2942 based on Foata normal form. 39/15432 useless extension candidates. Maximal degree in co-relation 40443. Up to 11129 conditions per place. [2024-01-31 16:01:27,526 INFO L140 encePairwiseOnDemand]: 217/225 looper letters, 198 selfloop transitions, 22 changer transitions 0/344 dead transitions. [2024-01-31 16:01:27,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 344 transitions, 2214 flow [2024-01-31 16:01:27,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:01:27,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:01:27,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 615 transitions. [2024-01-31 16:01:27,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5466666666666666 [2024-01-31 16:01:27,528 INFO L175 Difference]: Start difference. First operand has 206 places, 302 transitions, 1605 flow. Second operand 5 states and 615 transitions. [2024-01-31 16:01:27,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 344 transitions, 2214 flow [2024-01-31 16:01:27,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 344 transitions, 2208 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-01-31 16:01:27,568 INFO L231 Difference]: Finished difference. Result has 212 places, 307 transitions, 1695 flow [2024-01-31 16:01:27,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=1601, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1695, PETRI_PLACES=212, PETRI_TRANSITIONS=307} [2024-01-31 16:01:27,569 INFO L281 CegarLoopForPetriNet]: 208 programPoint places, 4 predicate places. [2024-01-31 16:01:27,569 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 307 transitions, 1695 flow [2024-01-31 16:01:27,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.8) internal successors, (484), 5 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:01:27,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:27,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:01:27,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 16:01:27,570 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 204 more)] === [2024-01-31 16:01:27,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:27,570 INFO L85 PathProgramCache]: Analyzing trace with hash 389183035, now seen corresponding path program 2 times [2024-01-31 16:01:27,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:27,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814846763] [2024-01-31 16:01:27,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:27,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:01:27,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:01:27,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:01:27,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814846763] [2024-01-31 16:01:27,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814846763] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:01:27,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:01:27,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:01:27,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616277120] [2024-01-31 16:01:27,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:01:27,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:01:27,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:01:27,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:01:27,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:01:27,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 225 [2024-01-31 16:01:27,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 307 transitions, 1695 flow. Second operand has 5 states, 5 states have (on average 96.8) internal successors, (484), 5 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:01:27,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:01:27,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 225 [2024-01-31 16:01:27,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:01:30,164 INFO L124 PetriNetUnfolderBase]: 7633/16617 cut-off events. [2024-01-31 16:01:30,164 INFO L125 PetriNetUnfolderBase]: For 13227/16582 co-relation queries the response was YES. [2024-01-31 16:01:30,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41800 conditions, 16617 events. 7633/16617 cut-off events. For 13227/16582 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 157092 event pairs, 2693 based on Foata normal form. 33/15672 useless extension candidates. Maximal degree in co-relation 41764. Up to 11129 conditions per place. [2024-01-31 16:01:30,391 INFO L140 encePairwiseOnDemand]: 218/225 looper letters, 209 selfloop transitions, 23 changer transitions 0/356 dead transitions. [2024-01-31 16:01:30,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 356 transitions, 2357 flow [2024-01-31 16:01:30,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:01:30,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:01:30,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 624 transitions. [2024-01-31 16:01:30,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5546666666666666 [2024-01-31 16:01:30,393 INFO L175 Difference]: Start difference. First operand has 212 places, 307 transitions, 1695 flow. Second operand 5 states and 624 transitions. [2024-01-31 16:01:30,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 356 transitions, 2357 flow [2024-01-31 16:01:30,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 356 transitions, 2309 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-01-31 16:01:30,451 INFO L231 Difference]: Finished difference. Result has 214 places, 309 transitions, 1722 flow [2024-01-31 16:01:30,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=1651, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1722, PETRI_PLACES=214, PETRI_TRANSITIONS=309} [2024-01-31 16:01:30,452 INFO L281 CegarLoopForPetriNet]: 208 programPoint places, 6 predicate places. [2024-01-31 16:01:30,452 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 309 transitions, 1722 flow [2024-01-31 16:01:30,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.8) internal successors, (484), 5 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:01:30,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:30,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:01:30,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-31 16:01:30,453 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 204 more)] === [2024-01-31 16:01:30,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:30,453 INFO L85 PathProgramCache]: Analyzing trace with hash 287805263, now seen corresponding path program 1 times [2024-01-31 16:01:30,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:30,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705905946] [2024-01-31 16:01:30,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:30,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:30,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:01:30,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:01:30,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:01:30,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705905946] [2024-01-31 16:01:30,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705905946] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:01:30,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:01:30,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:01:30,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491897218] [2024-01-31 16:01:30,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:01:30,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:01:30,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:01:30,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:01:30,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:01:30,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 225 [2024-01-31 16:01:30,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 309 transitions, 1722 flow. Second operand has 5 states, 5 states have (on average 96.8) internal successors, (484), 5 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:01:30,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:01:30,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 225 [2024-01-31 16:01:30,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:01:32,795 INFO L124 PetriNetUnfolderBase]: 7671/16537 cut-off events. [2024-01-31 16:01:32,796 INFO L125 PetriNetUnfolderBase]: For 13886/16985 co-relation queries the response was YES. [2024-01-31 16:01:32,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42589 conditions, 16537 events. 7671/16537 cut-off events. For 13886/16985 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 155597 event pairs, 3497 based on Foata normal form. 49/15397 useless extension candidates. Maximal degree in co-relation 41915. Up to 10112 conditions per place. [2024-01-31 16:01:32,927 INFO L140 encePairwiseOnDemand]: 218/225 looper letters, 251 selfloop transitions, 18 changer transitions 0/382 dead transitions. [2024-01-31 16:01:32,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 382 transitions, 2525 flow [2024-01-31 16:01:32,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:01:32,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:01:32,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 640 transitions. [2024-01-31 16:01:32,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5688888888888889 [2024-01-31 16:01:32,930 INFO L175 Difference]: Start difference. First operand has 214 places, 309 transitions, 1722 flow. Second operand 5 states and 640 transitions. [2024-01-31 16:01:32,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 382 transitions, 2525 flow [2024-01-31 16:01:32,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 382 transitions, 2503 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:01:32,976 INFO L231 Difference]: Finished difference. Result has 217 places, 311 transitions, 1758 flow [2024-01-31 16:01:32,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=1703, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1758, PETRI_PLACES=217, PETRI_TRANSITIONS=311} [2024-01-31 16:01:32,977 INFO L281 CegarLoopForPetriNet]: 208 programPoint places, 9 predicate places. [2024-01-31 16:01:32,977 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 311 transitions, 1758 flow [2024-01-31 16:01:32,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.8) internal successors, (484), 5 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:01:32,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:32,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:01:32,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-31 16:01:32,978 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 204 more)] === [2024-01-31 16:01:32,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:32,978 INFO L85 PathProgramCache]: Analyzing trace with hash -4181789, now seen corresponding path program 2 times [2024-01-31 16:01:32,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:32,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348083845] [2024-01-31 16:01:32,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:32,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:32,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:01:33,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:01:33,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:01:33,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348083845] [2024-01-31 16:01:33,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348083845] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:01:33,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:01:33,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:01:33,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421662464] [2024-01-31 16:01:33,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:01:33,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:01:33,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:01:33,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:01:33,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:01:33,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 225 [2024-01-31 16:01:33,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 311 transitions, 1758 flow. Second operand has 5 states, 5 states have (on average 96.8) internal successors, (484), 5 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:01:33,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:01:33,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 225 [2024-01-31 16:01:33,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:01:35,089 INFO L124 PetriNetUnfolderBase]: 7616/16468 cut-off events. [2024-01-31 16:01:35,090 INFO L125 PetriNetUnfolderBase]: For 12559/15621 co-relation queries the response was YES. [2024-01-31 16:01:35,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42761 conditions, 16468 events. 7616/16468 cut-off events. For 12559/15621 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 155297 event pairs, 3810 based on Foata normal form. 30/15345 useless extension candidates. Maximal degree in co-relation 42070. Up to 10112 conditions per place. [2024-01-31 16:01:35,288 INFO L140 encePairwiseOnDemand]: 217/225 looper letters, 229 selfloop transitions, 21 changer transitions 0/363 dead transitions. [2024-01-31 16:01:35,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 363 transitions, 2451 flow [2024-01-31 16:01:35,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:01:35,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:01:35,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 620 transitions. [2024-01-31 16:01:35,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5511111111111111 [2024-01-31 16:01:35,291 INFO L175 Difference]: Start difference. First operand has 217 places, 311 transitions, 1758 flow. Second operand 5 states and 620 transitions. [2024-01-31 16:01:35,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 363 transitions, 2451 flow [2024-01-31 16:01:35,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 363 transitions, 2435 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:01:35,362 INFO L231 Difference]: Finished difference. Result has 221 places, 315 transitions, 1829 flow [2024-01-31 16:01:35,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=1743, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1829, PETRI_PLACES=221, PETRI_TRANSITIONS=315} [2024-01-31 16:01:35,364 INFO L281 CegarLoopForPetriNet]: 208 programPoint places, 13 predicate places. [2024-01-31 16:01:35,364 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 315 transitions, 1829 flow [2024-01-31 16:01:35,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.8) internal successors, (484), 5 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:01:35,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:35,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:01:35,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-31 16:01:35,365 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thr2Err5ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 204 more)] === [2024-01-31 16:01:35,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:35,366 INFO L85 PathProgramCache]: Analyzing trace with hash 386073928, now seen corresponding path program 1 times [2024-01-31 16:01:35,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:35,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945136352] [2024-01-31 16:01:35,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:35,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:35,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:01:35,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:01:35,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:01:35,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945136352] [2024-01-31 16:01:35,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945136352] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:01:35,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:01:35,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:01:35,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536150441] [2024-01-31 16:01:35,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:01:35,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:01:35,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:01:35,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:01:35,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:01:35,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 225 [2024-01-31 16:01:35,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 315 transitions, 1829 flow. Second operand has 5 states, 5 states have (on average 76.2) internal successors, (381), 5 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:01:35,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:01:35,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 225 [2024-01-31 16:01:35,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:01:39,036 INFO L124 PetriNetUnfolderBase]: 13219/26683 cut-off events. [2024-01-31 16:01:39,036 INFO L125 PetriNetUnfolderBase]: For 24932/30697 co-relation queries the response was YES. [2024-01-31 16:01:39,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71814 conditions, 26683 events. 13219/26683 cut-off events. For 24932/30697 co-relation queries the response was YES. Maximal size of possible extension queue 897. Compared 257350 event pairs, 4709 based on Foata normal form. 1485/27416 useless extension candidates. Maximal degree in co-relation 71774. Up to 13513 conditions per place. [2024-01-31 16:01:39,397 INFO L140 encePairwiseOnDemand]: 163/225 looper letters, 384 selfloop transitions, 67 changer transitions 3/558 dead transitions. [2024-01-31 16:01:39,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 558 transitions, 3786 flow [2024-01-31 16:01:39,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:01:39,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:01:39,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 825 transitions. [2024-01-31 16:01:39,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-01-31 16:01:39,402 INFO L175 Difference]: Start difference. First operand has 221 places, 315 transitions, 1829 flow. Second operand 6 states and 825 transitions. [2024-01-31 16:01:39,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 558 transitions, 3786 flow [2024-01-31 16:01:39,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 558 transitions, 3734 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-01-31 16:01:39,559 INFO L231 Difference]: Finished difference. Result has 227 places, 352 transitions, 2383 flow [2024-01-31 16:01:39,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=1787, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2383, PETRI_PLACES=227, PETRI_TRANSITIONS=352} [2024-01-31 16:01:39,561 INFO L281 CegarLoopForPetriNet]: 208 programPoint places, 19 predicate places. [2024-01-31 16:01:39,561 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 352 transitions, 2383 flow [2024-01-31 16:01:39,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.2) internal successors, (381), 5 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:01:39,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:39,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:01:39,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-01-31 16:01:39,562 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 204 more)] === [2024-01-31 16:01:39,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:39,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1034743640, now seen corresponding path program 1 times [2024-01-31 16:01:39,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:39,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787426027] [2024-01-31 16:01:39,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:39,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:39,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:01:39,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:01:39,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:01:39,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787426027] [2024-01-31 16:01:39,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787426027] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:01:39,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:01:39,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:01:39,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539161696] [2024-01-31 16:01:39,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:01:39,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:01:39,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:01:39,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:01:39,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:01:39,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 225 [2024-01-31 16:01:39,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 352 transitions, 2383 flow. Second operand has 7 states, 7 states have (on average 76.71428571428571) internal successors, (537), 7 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:01:39,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:01:39,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 225 [2024-01-31 16:01:39,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:01:43,319 INFO L124 PetriNetUnfolderBase]: 12944/26381 cut-off events. [2024-01-31 16:01:43,319 INFO L125 PetriNetUnfolderBase]: For 38267/45058 co-relation queries the response was YES. [2024-01-31 16:01:43,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77099 conditions, 26381 events. 12944/26381 cut-off events. For 38267/45058 co-relation queries the response was YES. Maximal size of possible extension queue 866. Compared 256685 event pairs, 4811 based on Foata normal form. 189/25668 useless extension candidates. Maximal degree in co-relation 76598. Up to 17801 conditions per place. [2024-01-31 16:01:43,725 INFO L140 encePairwiseOnDemand]: 184/225 looper letters, 279 selfloop transitions, 82 changer transitions 0/466 dead transitions. [2024-01-31 16:01:43,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 466 transitions, 3569 flow [2024-01-31 16:01:43,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:01:43,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:01:43,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 723 transitions. [2024-01-31 16:01:43,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5355555555555556 [2024-01-31 16:01:43,728 INFO L175 Difference]: Start difference. First operand has 227 places, 352 transitions, 2383 flow. Second operand 6 states and 723 transitions. [2024-01-31 16:01:43,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 466 transitions, 3569 flow [2024-01-31 16:01:43,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 466 transitions, 3560 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-01-31 16:01:43,916 INFO L231 Difference]: Finished difference. Result has 233 places, 353 transitions, 2564 flow [2024-01-31 16:01:43,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=2374, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2564, PETRI_PLACES=233, PETRI_TRANSITIONS=353} [2024-01-31 16:01:43,917 INFO L281 CegarLoopForPetriNet]: 208 programPoint places, 25 predicate places. [2024-01-31 16:01:43,917 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 353 transitions, 2564 flow [2024-01-31 16:01:43,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.71428571428571) internal successors, (537), 7 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:01:43,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:43,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:01:43,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-01-31 16:01:43,918 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 204 more)] === [2024-01-31 16:01:43,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:43,919 INFO L85 PathProgramCache]: Analyzing trace with hash 559442652, now seen corresponding path program 1 times [2024-01-31 16:01:43,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:43,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202857587] [2024-01-31 16:01:43,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:43,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:43,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:01:44,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:01:44,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:01:44,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202857587] [2024-01-31 16:01:44,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202857587] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:01:44,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:01:44,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:01:44,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092816181] [2024-01-31 16:01:44,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:01:44,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:01:44,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:01:44,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:01:44,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:01:44,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 225 [2024-01-31 16:01:44,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 353 transitions, 2564 flow. Second operand has 5 states, 5 states have (on average 97.2) internal successors, (486), 5 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:01:44,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:01:44,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 225 [2024-01-31 16:01:44,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:01:47,031 INFO L124 PetriNetUnfolderBase]: 10182/22280 cut-off events. [2024-01-31 16:01:47,031 INFO L125 PetriNetUnfolderBase]: For 34440/39621 co-relation queries the response was YES. [2024-01-31 16:01:47,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65101 conditions, 22280 events. 10182/22280 cut-off events. For 34440/39621 co-relation queries the response was YES. Maximal size of possible extension queue 745. Compared 220659 event pairs, 3843 based on Foata normal form. 139/21282 useless extension candidates. Maximal degree in co-relation 64596. Up to 13916 conditions per place. [2024-01-31 16:01:47,327 INFO L140 encePairwiseOnDemand]: 219/225 looper letters, 270 selfloop transitions, 26 changer transitions 0/421 dead transitions. [2024-01-31 16:01:47,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 421 transitions, 3475 flow [2024-01-31 16:01:47,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:01:47,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:01:47,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 633 transitions. [2024-01-31 16:01:47,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5626666666666666 [2024-01-31 16:01:47,329 INFO L175 Difference]: Start difference. First operand has 233 places, 353 transitions, 2564 flow. Second operand 5 states and 633 transitions. [2024-01-31 16:01:47,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 421 transitions, 3475 flow [2024-01-31 16:01:47,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 421 transitions, 3319 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-31 16:01:47,501 INFO L231 Difference]: Finished difference. Result has 235 places, 355 transitions, 2488 flow [2024-01-31 16:01:47,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=2414, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2488, PETRI_PLACES=235, PETRI_TRANSITIONS=355} [2024-01-31 16:01:47,502 INFO L281 CegarLoopForPetriNet]: 208 programPoint places, 27 predicate places. [2024-01-31 16:01:47,502 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 355 transitions, 2488 flow [2024-01-31 16:01:47,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 97.2) internal successors, (486), 5 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:01:47,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:47,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:01:47,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-01-31 16:01:47,503 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thr2Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 204 more)] === [2024-01-31 16:01:47,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:47,503 INFO L85 PathProgramCache]: Analyzing trace with hash -889346458, now seen corresponding path program 1 times [2024-01-31 16:01:47,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:47,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995792086] [2024-01-31 16:01:47,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:47,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:47,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:01:47,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:01:47,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:01:47,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995792086] [2024-01-31 16:01:47,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995792086] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:01:47,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:01:47,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:01:47,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502659270] [2024-01-31 16:01:47,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:01:47,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:01:47,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:01:47,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:01:47,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:01:47,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 225 [2024-01-31 16:01:47,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 355 transitions, 2488 flow. Second operand has 5 states, 5 states have (on average 97.2) internal successors, (486), 5 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:01:47,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:01:47,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 225 [2024-01-31 16:01:47,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:01:50,613 INFO L124 PetriNetUnfolderBase]: 10747/22975 cut-off events. [2024-01-31 16:01:50,613 INFO L125 PetriNetUnfolderBase]: For 28688/33531 co-relation queries the response was YES. [2024-01-31 16:01:50,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67826 conditions, 22975 events. 10747/22975 cut-off events. For 28688/33531 co-relation queries the response was YES. Maximal size of possible extension queue 752. Compared 225735 event pairs, 6724 based on Foata normal form. 79/22089 useless extension candidates. Maximal degree in co-relation 67779. Up to 14591 conditions per place. [2024-01-31 16:01:50,940 INFO L140 encePairwiseOnDemand]: 198/225 looper letters, 288 selfloop transitions, 46 changer transitions 0/459 dead transitions. [2024-01-31 16:01:50,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 459 transitions, 3627 flow [2024-01-31 16:01:50,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:01:50,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:01:50,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 671 transitions. [2024-01-31 16:01:50,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5964444444444444 [2024-01-31 16:01:50,942 INFO L175 Difference]: Start difference. First operand has 235 places, 355 transitions, 2488 flow. Second operand 5 states and 671 transitions. [2024-01-31 16:01:50,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 459 transitions, 3627 flow [2024-01-31 16:01:51,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 459 transitions, 3597 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-01-31 16:01:51,161 INFO L231 Difference]: Finished difference. Result has 239 places, 377 transitions, 2751 flow [2024-01-31 16:01:51,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=2459, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2751, PETRI_PLACES=239, PETRI_TRANSITIONS=377} [2024-01-31 16:01:51,162 INFO L281 CegarLoopForPetriNet]: 208 programPoint places, 31 predicate places. [2024-01-31 16:01:51,164 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 377 transitions, 2751 flow [2024-01-31 16:01:51,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 97.2) internal successors, (486), 5 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:01:51,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:51,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:01:51,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-01-31 16:01:51,165 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 204 more)] === [2024-01-31 16:01:51,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:51,165 INFO L85 PathProgramCache]: Analyzing trace with hash 339718546, now seen corresponding path program 2 times [2024-01-31 16:01:51,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:51,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760937808] [2024-01-31 16:01:51,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:51,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:51,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:01:51,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:01:51,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:01:51,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760937808] [2024-01-31 16:01:51,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760937808] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:01:51,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:01:51,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:01:51,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008497717] [2024-01-31 16:01:51,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:01:51,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:01:51,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:01:51,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:01:51,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:01:51,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 225 [2024-01-31 16:01:51,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 377 transitions, 2751 flow. Second operand has 5 states, 5 states have (on average 97.2) internal successors, (486), 5 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:01:51,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:01:51,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 225 [2024-01-31 16:01:51,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:01:55,049 INFO L124 PetriNetUnfolderBase]: 12501/27239 cut-off events. [2024-01-31 16:01:55,050 INFO L125 PetriNetUnfolderBase]: For 49167/58940 co-relation queries the response was YES. [2024-01-31 16:01:55,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83035 conditions, 27239 events. 12501/27239 cut-off events. For 49167/58940 co-relation queries the response was YES. Maximal size of possible extension queue 824. Compared 273967 event pairs, 4619 based on Foata normal form. 279/26247 useless extension candidates. Maximal degree in co-relation 82468. Up to 17129 conditions per place. [2024-01-31 16:01:55,478 INFO L140 encePairwiseOnDemand]: 219/225 looper letters, 317 selfloop transitions, 24 changer transitions 0/479 dead transitions. [2024-01-31 16:01:55,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 479 transitions, 3956 flow [2024-01-31 16:01:55,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:01:55,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:01:55,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 658 transitions. [2024-01-31 16:01:55,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5848888888888889 [2024-01-31 16:01:55,480 INFO L175 Difference]: Start difference. First operand has 239 places, 377 transitions, 2751 flow. Second operand 5 states and 658 transitions. [2024-01-31 16:01:55,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 479 transitions, 3956 flow [2024-01-31 16:01:55,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 479 transitions, 3860 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-01-31 16:01:55,755 INFO L231 Difference]: Finished difference. Result has 242 places, 384 transitions, 2809 flow [2024-01-31 16:01:55,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=2663, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2809, PETRI_PLACES=242, PETRI_TRANSITIONS=384} [2024-01-31 16:01:55,756 INFO L281 CegarLoopForPetriNet]: 208 programPoint places, 34 predicate places. [2024-01-31 16:01:55,756 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 384 transitions, 2809 flow [2024-01-31 16:01:55,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 97.2) internal successors, (486), 5 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:01:55,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:55,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:01:55,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-01-31 16:01:55,757 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thr2Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 204 more)] === [2024-01-31 16:01:55,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:55,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1574220296, now seen corresponding path program 2 times [2024-01-31 16:01:55,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:55,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849253596] [2024-01-31 16:01:55,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:55,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:55,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:01:55,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:01:55,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:01:55,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849253596] [2024-01-31 16:01:55,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849253596] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:01:55,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:01:55,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:01:55,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903359943] [2024-01-31 16:01:55,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:01:55,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:01:55,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:01:55,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:01:55,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:01:55,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 225 [2024-01-31 16:01:55,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 384 transitions, 2809 flow. Second operand has 5 states, 5 states have (on average 97.2) internal successors, (486), 5 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:01:55,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:01:55,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 225 [2024-01-31 16:01:55,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:01:59,633 INFO L124 PetriNetUnfolderBase]: 11937/26686 cut-off events. [2024-01-31 16:01:59,633 INFO L125 PetriNetUnfolderBase]: For 42479/46620 co-relation queries the response was YES. [2024-01-31 16:01:59,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81852 conditions, 26686 events. 11937/26686 cut-off events. For 42479/46620 co-relation queries the response was YES. Maximal size of possible extension queue 803. Compared 271208 event pairs, 3399 based on Foata normal form. 85/25649 useless extension candidates. Maximal degree in co-relation 81801. Up to 14583 conditions per place. [2024-01-31 16:01:59,899 INFO L140 encePairwiseOnDemand]: 219/225 looper letters, 288 selfloop transitions, 36 changer transitions 0/449 dead transitions. [2024-01-31 16:01:59,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 449 transitions, 3785 flow [2024-01-31 16:01:59,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:01:59,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:01:59,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 631 transitions. [2024-01-31 16:01:59,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5608888888888889 [2024-01-31 16:01:59,902 INFO L175 Difference]: Start difference. First operand has 242 places, 384 transitions, 2809 flow. Second operand 5 states and 631 transitions. [2024-01-31 16:01:59,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 449 transitions, 3785 flow [2024-01-31 16:02:00,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 449 transitions, 3765 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-01-31 16:02:00,142 INFO L231 Difference]: Finished difference. Result has 246 places, 387 transitions, 2910 flow [2024-01-31 16:02:00,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=2789, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2910, PETRI_PLACES=246, PETRI_TRANSITIONS=387} [2024-01-31 16:02:00,143 INFO L281 CegarLoopForPetriNet]: 208 programPoint places, 38 predicate places. [2024-01-31 16:02:00,143 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 387 transitions, 2910 flow [2024-01-31 16:02:00,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 97.2) internal successors, (486), 5 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:00,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:02:00,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:02:00,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-01-31 16:02:00,144 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 204 more)] === [2024-01-31 16:02:00,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:02:00,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1744363022, now seen corresponding path program 3 times [2024-01-31 16:02:00,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:02:00,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557364012] [2024-01-31 16:02:00,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:02:00,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:02:00,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:02:00,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:02:00,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:02:00,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557364012] [2024-01-31 16:02:00,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557364012] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:02:00,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:02:00,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:02:00,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812970195] [2024-01-31 16:02:00,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:02:00,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:02:00,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:02:00,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:02:00,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:02:00,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 225 [2024-01-31 16:02:00,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 387 transitions, 2910 flow. Second operand has 5 states, 5 states have (on average 97.2) internal successors, (486), 5 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:00,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:02:00,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 225 [2024-01-31 16:02:00,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:02:04,584 INFO L124 PetriNetUnfolderBase]: 13390/29414 cut-off events. [2024-01-31 16:02:04,592 INFO L125 PetriNetUnfolderBase]: For 58921/67872 co-relation queries the response was YES. [2024-01-31 16:02:04,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91395 conditions, 29414 events. 13390/29414 cut-off events. For 58921/67872 co-relation queries the response was YES. Maximal size of possible extension queue 845. Compared 298674 event pairs, 7109 based on Foata normal form. 338/28524 useless extension candidates. Maximal degree in co-relation 90811. Up to 16426 conditions per place. [2024-01-31 16:02:04,971 INFO L140 encePairwiseOnDemand]: 198/225 looper letters, 296 selfloop transitions, 57 changer transitions 0/491 dead transitions. [2024-01-31 16:02:04,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 491 transitions, 4094 flow [2024-01-31 16:02:04,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:02:04,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:02:04,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 671 transitions. [2024-01-31 16:02:04,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5964444444444444 [2024-01-31 16:02:04,973 INFO L175 Difference]: Start difference. First operand has 246 places, 387 transitions, 2910 flow. Second operand 5 states and 671 transitions. [2024-01-31 16:02:04,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 491 transitions, 4094 flow [2024-01-31 16:02:05,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 491 transitions, 4050 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-01-31 16:02:05,278 INFO L231 Difference]: Finished difference. Result has 250 places, 410 transitions, 3207 flow [2024-01-31 16:02:05,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=2868, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3207, PETRI_PLACES=250, PETRI_TRANSITIONS=410} [2024-01-31 16:02:05,279 INFO L281 CegarLoopForPetriNet]: 208 programPoint places, 42 predicate places. [2024-01-31 16:02:05,279 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 410 transitions, 3207 flow [2024-01-31 16:02:05,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 97.2) internal successors, (486), 5 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:05,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:02:05,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:02:05,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-01-31 16:02:05,280 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 204 more)] === [2024-01-31 16:02:05,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:02:05,280 INFO L85 PathProgramCache]: Analyzing trace with hash 162854022, now seen corresponding path program 1 times [2024-01-31 16:02:05,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:02:05,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775092471] [2024-01-31 16:02:05,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:02:05,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:02:05,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:02:05,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:02:05,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:02:05,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775092471] [2024-01-31 16:02:05,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775092471] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:02:05,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:02:05,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:02:05,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621520008] [2024-01-31 16:02:05,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:02:05,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:02:05,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:02:05,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:02:05,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:02:05,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 225 [2024-01-31 16:02:05,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 410 transitions, 3207 flow. Second operand has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:05,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:02:05,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 225 [2024-01-31 16:02:05,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:02:11,534 INFO L124 PetriNetUnfolderBase]: 17596/36930 cut-off events. [2024-01-31 16:02:11,535 INFO L125 PetriNetUnfolderBase]: For 86328/97929 co-relation queries the response was YES. [2024-01-31 16:02:11,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119368 conditions, 36930 events. 17596/36930 cut-off events. For 86328/97929 co-relation queries the response was YES. Maximal size of possible extension queue 1068. Compared 374762 event pairs, 4539 based on Foata normal form. 1845/37304 useless extension candidates. Maximal degree in co-relation 118773. Up to 18563 conditions per place. [2024-01-31 16:02:12,491 INFO L140 encePairwiseOnDemand]: 196/225 looper letters, 445 selfloop transitions, 58 changer transitions 1/623 dead transitions. [2024-01-31 16:02:12,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 623 transitions, 5616 flow [2024-01-31 16:02:12,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:02:12,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:02:12,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 757 transitions. [2024-01-31 16:02:12,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5607407407407408 [2024-01-31 16:02:12,494 INFO L175 Difference]: Start difference. First operand has 250 places, 410 transitions, 3207 flow. Second operand 6 states and 757 transitions. [2024-01-31 16:02:12,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 623 transitions, 5616 flow [2024-01-31 16:02:12,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 623 transitions, 5488 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-01-31 16:02:12,846 INFO L231 Difference]: Finished difference. Result has 253 places, 433 transitions, 3645 flow [2024-01-31 16:02:12,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=3077, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3645, PETRI_PLACES=253, PETRI_TRANSITIONS=433} [2024-01-31 16:02:12,847 INFO L281 CegarLoopForPetriNet]: 208 programPoint places, 45 predicate places. [2024-01-31 16:02:12,847 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 433 transitions, 3645 flow [2024-01-31 16:02:12,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:12,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:02:12,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:02:12,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-01-31 16:02:12,849 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thr2Err5ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 204 more)] === [2024-01-31 16:02:12,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:02:12,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1224662200, now seen corresponding path program 1 times [2024-01-31 16:02:12,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:02:12,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901474631] [2024-01-31 16:02:12,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:02:12,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:02:12,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:02:12,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:02:12,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:02:12,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901474631] [2024-01-31 16:02:12,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901474631] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:02:12,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:02:12,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:02:12,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992864518] [2024-01-31 16:02:12,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:02:12,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:02:12,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:02:12,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:02:12,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:02:12,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 225 [2024-01-31 16:02:12,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 433 transitions, 3645 flow. Second operand has 4 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:12,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:02:12,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 225 [2024-01-31 16:02:12,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:02:18,872 INFO L124 PetriNetUnfolderBase]: 15514/33748 cut-off events. [2024-01-31 16:02:18,873 INFO L125 PetriNetUnfolderBase]: For 87998/95230 co-relation queries the response was YES. [2024-01-31 16:02:19,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113740 conditions, 33748 events. 15514/33748 cut-off events. For 87998/95230 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 346001 event pairs, 3933 based on Foata normal form. 1251/33689 useless extension candidates. Maximal degree in co-relation 113682. Up to 24318 conditions per place. [2024-01-31 16:02:19,357 INFO L140 encePairwiseOnDemand]: 216/225 looper letters, 357 selfloop transitions, 8 changer transitions 4/495 dead transitions. [2024-01-31 16:02:19,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 495 transitions, 4844 flow [2024-01-31 16:02:19,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:02:19,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:02:19,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 489 transitions. [2024-01-31 16:02:19,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5433333333333333 [2024-01-31 16:02:19,360 INFO L175 Difference]: Start difference. First operand has 253 places, 433 transitions, 3645 flow. Second operand 4 states and 489 transitions. [2024-01-31 16:02:19,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 495 transitions, 4844 flow [2024-01-31 16:02:19,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 495 transitions, 4836 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-01-31 16:02:19,894 INFO L231 Difference]: Finished difference. Result has 248 places, 422 transitions, 3568 flow [2024-01-31 16:02:19,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=3599, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3568, PETRI_PLACES=248, PETRI_TRANSITIONS=422} [2024-01-31 16:02:19,894 INFO L281 CegarLoopForPetriNet]: 208 programPoint places, 40 predicate places. [2024-01-31 16:02:19,895 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 422 transitions, 3568 flow [2024-01-31 16:02:19,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:19,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:02:19,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:02:19,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-01-31 16:02:19,895 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 204 more)] === [2024-01-31 16:02:19,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:02:19,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1759320172, now seen corresponding path program 2 times [2024-01-31 16:02:19,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:02:19,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111032030] [2024-01-31 16:02:19,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:02:19,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:02:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:02:19,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:02:19,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:02:19,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111032030] [2024-01-31 16:02:19,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111032030] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:02:19,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:02:19,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:02:19,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542133760] [2024-01-31 16:02:19,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:02:19,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:02:19,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:02:19,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:02:19,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:02:20,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 225 [2024-01-31 16:02:20,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 422 transitions, 3568 flow. Second operand has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:20,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:02:20,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 225 [2024-01-31 16:02:20,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:02:27,830 INFO L124 PetriNetUnfolderBase]: 19608/41584 cut-off events. [2024-01-31 16:02:27,830 INFO L125 PetriNetUnfolderBase]: For 114813/126868 co-relation queries the response was YES. [2024-01-31 16:02:28,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138637 conditions, 41584 events. 19608/41584 cut-off events. For 114813/126868 co-relation queries the response was YES. Maximal size of possible extension queue 1168. Compared 431156 event pairs, 7649 based on Foata normal form. 1558/41666 useless extension candidates. Maximal degree in co-relation 138022. Up to 17032 conditions per place. [2024-01-31 16:02:28,475 INFO L140 encePairwiseOnDemand]: 184/225 looper letters, 406 selfloop transitions, 92 changer transitions 3/613 dead transitions. [2024-01-31 16:02:28,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 613 transitions, 5815 flow [2024-01-31 16:02:28,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:02:28,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:02:28,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 752 transitions. [2024-01-31 16:02:28,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.557037037037037 [2024-01-31 16:02:28,477 INFO L175 Difference]: Start difference. First operand has 248 places, 422 transitions, 3568 flow. Second operand 6 states and 752 transitions. [2024-01-31 16:02:28,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 613 transitions, 5815 flow [2024-01-31 16:02:28,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 613 transitions, 5797 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:02:28,984 INFO L231 Difference]: Finished difference. Result has 255 places, 440 transitions, 4162 flow [2024-01-31 16:02:28,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=3556, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4162, PETRI_PLACES=255, PETRI_TRANSITIONS=440} [2024-01-31 16:02:28,985 INFO L281 CegarLoopForPetriNet]: 208 programPoint places, 47 predicate places. [2024-01-31 16:02:28,985 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 440 transitions, 4162 flow [2024-01-31 16:02:28,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:28,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:02:28,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:02:28,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-01-31 16:02:28,986 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thr2Err10ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 204 more)] === [2024-01-31 16:02:28,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:02:28,986 INFO L85 PathProgramCache]: Analyzing trace with hash -393145770, now seen corresponding path program 1 times [2024-01-31 16:02:28,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:02:28,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865682123] [2024-01-31 16:02:28,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:02:28,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:02:29,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:02:29,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:02:29,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:02:29,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865682123] [2024-01-31 16:02:29,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865682123] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:02:29,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:02:29,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:02:29,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642343617] [2024-01-31 16:02:29,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:02:29,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:02:29,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:02:29,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:02:29,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:02:29,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 225 [2024-01-31 16:02:29,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 440 transitions, 4162 flow. Second operand has 6 states, 6 states have (on average 76.16666666666667) internal successors, (457), 6 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:29,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:02:29,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 225 [2024-01-31 16:02:29,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand