./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/mutex-meet/popl20-proofs-counter-add-4-semi-Q67.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f 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/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c ./goblint.2024-05-21_14-57-05.files/mutex-meet/popl20-proofs-counter-add-4-semi-Q67.wvr.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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-bcb38a6-m [2024-06-03 21:02:59,512 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-03 21:02:59,616 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-03 21:02:59,621 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-03 21:02:59,621 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-03 21:02:59,641 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-03 21:02:59,643 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-03 21:02:59,643 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-03 21:02:59,644 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-03 21:02:59,648 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-03 21:02:59,649 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-03 21:02:59,649 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-03 21:02:59,649 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-03 21:02:59,650 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-03 21:02:59,651 INFO L153 SettingsManager]: * Use SBE=true [2024-06-03 21:02:59,651 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-03 21:02:59,651 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-03 21:02:59,651 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-03 21:02:59,651 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-03 21:02:59,652 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-03 21:02:59,652 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-03 21:02:59,652 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-03 21:02:59,652 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-03 21:02:59,652 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-03 21:02:59,653 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-03 21:02:59,653 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-03 21:02:59,653 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-03 21:02:59,653 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-03 21:02:59,654 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-03 21:02:59,654 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-03 21:02:59,655 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-03 21:02:59,655 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-03 21:02:59,655 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 21:02:59,655 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-03 21:02:59,655 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-03 21:02:59,656 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-03 21:02:59,656 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-03 21:02:59,656 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-03 21:02:59,656 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-03 21:02:59,656 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-03 21:02:59,656 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-03 21:02:59,657 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-03 21:02:59,657 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-03 21:02:59,657 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-03 21:02:59,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-03 21:02:59,872 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-03 21:02:59,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-03 21:02:59,875 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-03 21:02:59,876 INFO L274 PluginConnector]: CDTParser initialized [2024-06-03 21:02:59,877 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2024-06-03 21:03:01,002 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-03 21:03:01,163 INFO L384 CDTParser]: Found 1 translation units. [2024-06-03 21:03:01,163 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2024-06-03 21:03:01,170 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40c7350f9/9f57e031c726431e8513975904438600/FLAG56e2823a8 [2024-06-03 21:03:01,181 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40c7350f9/9f57e031c726431e8513975904438600 [2024-06-03 21:03:01,183 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-03 21:03:01,184 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-03 21:03:01,185 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/popl20-proofs-counter-add-4-semi-Q67.wvr.yml/witness.yml [2024-06-03 21:03:01,285 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-03 21:03:01,287 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-03 21:03:01,288 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-03 21:03:01,288 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-03 21:03:01,292 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-03 21:03:01,292 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 09:03:01" (1/2) ... [2024-06-03 21:03:01,293 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56a0ae82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:03:01, skipping insertion in model container [2024-06-03 21:03:01,294 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 09:03:01" (1/2) ... [2024-06-03 21:03:01,295 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3e8aecc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:03:01, skipping insertion in model container [2024-06-03 21:03:01,296 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 09:03:01" (2/2) ... [2024-06-03 21:03:01,296 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56a0ae82 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:03:01, skipping insertion in model container [2024-06-03 21:03:01,296 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 09:03:01" (2/2) ... [2024-06-03 21:03:01,296 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-03 21:03:01,321 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-03 21:03:01,322 INFO L97 edCorrectnessWitness]: Location invariant before [L99-L99] ((((! multithreaded || 0 <= i2) && (! multithreaded || 0 <= j2)) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((2147483648LL + (long long )N1) + (long long )i2 >= 0LL && (2147483648LL + (long long )N1) + (long long )j1 >= 0LL) && (2147483648LL + (long long )N1) + (long long )j2 >= 0LL) && (2147483648LL + (long long )N2) + (long long )i2 >= 0LL) && (2147483648LL + (long long )N2) + (long long )j1 >= 0LL) && (2147483648LL + (long long )N2) + (long long )j2 >= 0LL) && (2147483648LL + (long long )M1) + (long long )i2 >= 0LL) && (2147483648LL + (long long )M1) + (long long )j1 >= 0LL) && (2147483648LL + (long long )M1) + (long long )j2 >= 0LL) && (2147483648LL + (long long )M2) + (long long )i2 >= 0LL) && (2147483648LL + (long long )M2) + (long long )j1 >= 0LL) && (2147483648LL + (long long )M2) + (long long )j2 >= 0LL) && (4294967296LL + (long long )N1) + (long long )N2 >= 0LL) && (4294967296LL + (long long )M1) + (long long )N1 >= 0LL) && (4294967296LL + (long long )M1) + (long long )N2 >= 0LL) && (4294967296LL + (long long )M1) + (long long )M2 >= 0LL) && (4294967296LL + (long long )M2) + (long long )N1 >= 0LL) && (4294967296LL + (long long )M2) + (long long )N2 >= 0LL) && (2147483647LL - (long long )N1) + (long long )i2 >= 0LL) && (2147483647LL - (long long )N1) + (long long )j1 >= 0LL) && (2147483647LL - (long long )N1) + (long long )j2 >= 0LL) && (2147483647LL - (long long )N2) + (long long )i2 >= 0LL) && (2147483647LL - (long long )N2) + (long long )j1 >= 0LL) && (2147483647LL - (long long )N2) + (long long )j2 >= 0LL) && (2147483647LL - (long long )M1) + (long long )i2 >= 0LL) && (2147483647LL - (long long )M1) + (long long )j1 >= 0LL) && (2147483647LL - (long long )M1) + (long long )j2 >= 0LL) && (2147483647LL - (long long )M2) + (long long )i2 >= 0LL) && (2147483647LL - (long long )M2) + (long long )j1 >= 0LL) && (2147483647LL - (long long )M2) + (long long )j2 >= 0LL) && (4294967295LL - (long long )N1) + (long long )N2 >= 0LL) && (4294967295LL - (long long )M1) + (long long )N1 >= 0LL) && (4294967295LL - (long long )M1) + (long long )N2 >= 0LL) && (4294967295LL - (long long )M1) + (long long )M2 >= 0LL) && (4294967295LL - (long long )M2) + (long long )N1 >= 0LL) && (4294967295LL - (long long )M2) + (long long )N2 >= 0LL) && (long long )i2 + (long long )j1 >= 0LL) && (long long )i2 + (long long )j2 >= 0LL) && (long long )j1 + (long long )j2 >= 0LL) && (4294967295LL + (long long )N1) - (long long )N2 >= 0LL) && (4294967295LL + (long long )M1) - (long long )N1 >= 0LL) && (4294967295LL + (long long )M1) - (long long )N2 >= 0LL) && (4294967295LL + (long long )M1) - (long long )M2 >= 0LL) && (4294967295LL + (long long )M2) - (long long )N1 >= 0LL) && (4294967295LL + (long long )M2) - (long long )N2 >= 0LL) && (4294967294LL - (long long )N1) - (long long )N2 >= 0LL) && (4294967294LL - (long long )M1) - (long long )N1 >= 0LL) && (4294967294LL - (long long )M1) - (long long )N2 >= 0LL) && (4294967294LL - (long long )M1) - (long long )M2 >= 0LL) && (4294967294LL - (long long )M2) - (long long )N1 >= 0LL) && (4294967294LL - (long long )M2) - (long long )N2 >= 0LL))) && (! multithreaded || 0 <= j1)) && (! multithreaded || ((0 <= i2 && 0 <= j1) && 0 <= j2)) [2024-06-03 21:03:01,322 INFO L97 edCorrectnessWitness]: Location invariant before [L97-L97] ((((! multithreaded || 0 <= i2) && (! multithreaded || 0 <= j2)) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((2147483648LL + (long long )N1) + (long long )i2 >= 0LL && (2147483648LL + (long long )N1) + (long long )j1 >= 0LL) && (2147483648LL + (long long )N1) + (long long )j2 >= 0LL) && (2147483648LL + (long long )N2) + (long long )i2 >= 0LL) && (2147483648LL + (long long )N2) + (long long )j1 >= 0LL) && (2147483648LL + (long long )N2) + (long long )j2 >= 0LL) && (2147483648LL + (long long )M1) + (long long )i2 >= 0LL) && (2147483648LL + (long long )M1) + (long long )j1 >= 0LL) && (2147483648LL + (long long )M1) + (long long )j2 >= 0LL) && (2147483648LL + (long long )M2) + (long long )i2 >= 0LL) && (2147483648LL + (long long )M2) + (long long )j1 >= 0LL) && (2147483648LL + (long long )M2) + (long long )j2 >= 0LL) && (4294967296LL + (long long )N1) + (long long )N2 >= 0LL) && (4294967296LL + (long long )M1) + (long long )N1 >= 0LL) && (4294967296LL + (long long )M1) + (long long )N2 >= 0LL) && (4294967296LL + (long long )M1) + (long long )M2 >= 0LL) && (4294967296LL + (long long )M2) + (long long )N1 >= 0LL) && (4294967296LL + (long long )M2) + (long long )N2 >= 0LL) && (2147483647LL - (long long )N1) + (long long )i2 >= 0LL) && (2147483647LL - (long long )N1) + (long long )j1 >= 0LL) && (2147483647LL - (long long )N1) + (long long )j2 >= 0LL) && (2147483647LL - (long long )N2) + (long long )i2 >= 0LL) && (2147483647LL - (long long )N2) + (long long )j1 >= 0LL) && (2147483647LL - (long long )N2) + (long long )j2 >= 0LL) && (2147483647LL - (long long )M1) + (long long )i2 >= 0LL) && (2147483647LL - (long long )M1) + (long long )j1 >= 0LL) && (2147483647LL - (long long )M1) + (long long )j2 >= 0LL) && (2147483647LL - (long long )M2) + (long long )i2 >= 0LL) && (2147483647LL - (long long )M2) + (long long )j1 >= 0LL) && (2147483647LL - (long long )M2) + (long long )j2 >= 0LL) && (4294967295LL - (long long )N1) + (long long )N2 >= 0LL) && (4294967295LL - (long long )M1) + (long long )N1 >= 0LL) && (4294967295LL - (long long )M1) + (long long )N2 >= 0LL) && (4294967295LL - (long long )M1) + (long long )M2 >= 0LL) && (4294967295LL - (long long )M2) + (long long )N1 >= 0LL) && (4294967295LL - (long long )M2) + (long long )N2 >= 0LL) && (long long )i2 + (long long )j1 >= 0LL) && (long long )i2 + (long long )j2 >= 0LL) && (long long )j1 + (long long )j2 >= 0LL) && (4294967295LL + (long long )N1) - (long long )N2 >= 0LL) && (4294967295LL + (long long )M1) - (long long )N1 >= 0LL) && (4294967295LL + (long long )M1) - (long long )N2 >= 0LL) && (4294967295LL + (long long )M1) - (long long )M2 >= 0LL) && (4294967295LL + (long long )M2) - (long long )N1 >= 0LL) && (4294967295LL + (long long )M2) - (long long )N2 >= 0LL) && (4294967294LL - (long long )N1) - (long long )N2 >= 0LL) && (4294967294LL - (long long )M1) - (long long )N1 >= 0LL) && (4294967294LL - (long long )M1) - (long long )N2 >= 0LL) && (4294967294LL - (long long )M1) - (long long )M2 >= 0LL) && (4294967294LL - (long long )M2) - (long long )N1 >= 0LL) && (4294967294LL - (long long )M2) - (long long )N2 >= 0LL))) && (! multithreaded || 0 <= j1)) && (! multithreaded || ((0 <= i2 && 0 <= j1) && 0 <= j2)) [2024-06-03 21:03:01,322 INFO L97 edCorrectnessWitness]: Location invariant before [L98-L98] ((((! multithreaded || 0 <= i2) && (! multithreaded || 0 <= j2)) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((2147483648LL + (long long )N1) + (long long )i2 >= 0LL && (2147483648LL + (long long )N1) + (long long )j1 >= 0LL) && (2147483648LL + (long long )N1) + (long long )j2 >= 0LL) && (2147483648LL + (long long )N2) + (long long )i2 >= 0LL) && (2147483648LL + (long long )N2) + (long long )j1 >= 0LL) && (2147483648LL + (long long )N2) + (long long )j2 >= 0LL) && (2147483648LL + (long long )M1) + (long long )i2 >= 0LL) && (2147483648LL + (long long )M1) + (long long )j1 >= 0LL) && (2147483648LL + (long long )M1) + (long long )j2 >= 0LL) && (2147483648LL + (long long )M2) + (long long )i2 >= 0LL) && (2147483648LL + (long long )M2) + (long long )j1 >= 0LL) && (2147483648LL + (long long )M2) + (long long )j2 >= 0LL) && (4294967296LL + (long long )N1) + (long long )N2 >= 0LL) && (4294967296LL + (long long )M1) + (long long )N1 >= 0LL) && (4294967296LL + (long long )M1) + (long long )N2 >= 0LL) && (4294967296LL + (long long )M1) + (long long )M2 >= 0LL) && (4294967296LL + (long long )M2) + (long long )N1 >= 0LL) && (4294967296LL + (long long )M2) + (long long )N2 >= 0LL) && (2147483647LL - (long long )N1) + (long long )i2 >= 0LL) && (2147483647LL - (long long )N1) + (long long )j1 >= 0LL) && (2147483647LL - (long long )N1) + (long long )j2 >= 0LL) && (2147483647LL - (long long )N2) + (long long )i2 >= 0LL) && (2147483647LL - (long long )N2) + (long long )j1 >= 0LL) && (2147483647LL - (long long )N2) + (long long )j2 >= 0LL) && (2147483647LL - (long long )M1) + (long long )i2 >= 0LL) && (2147483647LL - (long long )M1) + (long long )j1 >= 0LL) && (2147483647LL - (long long )M1) + (long long )j2 >= 0LL) && (2147483647LL - (long long )M2) + (long long )i2 >= 0LL) && (2147483647LL - (long long )M2) + (long long )j1 >= 0LL) && (2147483647LL - (long long )M2) + (long long )j2 >= 0LL) && (4294967295LL - (long long )N1) + (long long )N2 >= 0LL) && (4294967295LL - (long long )M1) + (long long )N1 >= 0LL) && (4294967295LL - (long long )M1) + (long long )N2 >= 0LL) && (4294967295LL - (long long )M1) + (long long )M2 >= 0LL) && (4294967295LL - (long long )M2) + (long long )N1 >= 0LL) && (4294967295LL - (long long )M2) + (long long )N2 >= 0LL) && (long long )i2 + (long long )j1 >= 0LL) && (long long )i2 + (long long )j2 >= 0LL) && (long long )j1 + (long long )j2 >= 0LL) && (4294967295LL + (long long )N1) - (long long )N2 >= 0LL) && (4294967295LL + (long long )M1) - (long long )N1 >= 0LL) && (4294967295LL + (long long )M1) - (long long )N2 >= 0LL) && (4294967295LL + (long long )M1) - (long long )M2 >= 0LL) && (4294967295LL + (long long )M2) - (long long )N1 >= 0LL) && (4294967295LL + (long long )M2) - (long long )N2 >= 0LL) && (4294967294LL - (long long )N1) - (long long )N2 >= 0LL) && (4294967294LL - (long long )M1) - (long long )N1 >= 0LL) && (4294967294LL - (long long )M1) - (long long )N2 >= 0LL) && (4294967294LL - (long long )M1) - (long long )M2 >= 0LL) && (4294967294LL - (long long )M2) - (long long )N1 >= 0LL) && (4294967294LL - (long long )M2) - (long long )N2 >= 0LL))) && (! multithreaded || 0 <= j1)) && (! multithreaded || ((0 <= i2 && 0 <= j1) && 0 <= j2)) [2024-06-03 21:03:01,323 INFO L97 edCorrectnessWitness]: Location invariant before [L96-L96] ((((! multithreaded || 0 <= i2) && (! multithreaded || 0 <= j2)) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((2147483648LL + (long long )N1) + (long long )i2 >= 0LL && (2147483648LL + (long long )N1) + (long long )j1 >= 0LL) && (2147483648LL + (long long )N1) + (long long )j2 >= 0LL) && (2147483648LL + (long long )N2) + (long long )i2 >= 0LL) && (2147483648LL + (long long )N2) + (long long )j1 >= 0LL) && (2147483648LL + (long long )N2) + (long long )j2 >= 0LL) && (2147483648LL + (long long )M1) + (long long )i2 >= 0LL) && (2147483648LL + (long long )M1) + (long long )j1 >= 0LL) && (2147483648LL + (long long )M1) + (long long )j2 >= 0LL) && (2147483648LL + (long long )M2) + (long long )i2 >= 0LL) && (2147483648LL + (long long )M2) + (long long )j1 >= 0LL) && (2147483648LL + (long long )M2) + (long long )j2 >= 0LL) && (4294967296LL + (long long )N1) + (long long )N2 >= 0LL) && (4294967296LL + (long long )M1) + (long long )N1 >= 0LL) && (4294967296LL + (long long )M1) + (long long )N2 >= 0LL) && (4294967296LL + (long long )M1) + (long long )M2 >= 0LL) && (4294967296LL + (long long )M2) + (long long )N1 >= 0LL) && (4294967296LL + (long long )M2) + (long long )N2 >= 0LL) && (2147483647LL - (long long )N1) + (long long )i2 >= 0LL) && (2147483647LL - (long long )N1) + (long long )j1 >= 0LL) && (2147483647LL - (long long )N1) + (long long )j2 >= 0LL) && (2147483647LL - (long long )N2) + (long long )i2 >= 0LL) && (2147483647LL - (long long )N2) + (long long )j1 >= 0LL) && (2147483647LL - (long long )N2) + (long long )j2 >= 0LL) && (2147483647LL - (long long )M1) + (long long )i2 >= 0LL) && (2147483647LL - (long long )M1) + (long long )j1 >= 0LL) && (2147483647LL - (long long )M1) + (long long )j2 >= 0LL) && (2147483647LL - (long long )M2) + (long long )i2 >= 0LL) && (2147483647LL - (long long )M2) + (long long )j1 >= 0LL) && (2147483647LL - (long long )M2) + (long long )j2 >= 0LL) && (4294967295LL - (long long )N1) + (long long )N2 >= 0LL) && (4294967295LL - (long long )M1) + (long long )N1 >= 0LL) && (4294967295LL - (long long )M1) + (long long )N2 >= 0LL) && (4294967295LL - (long long )M1) + (long long )M2 >= 0LL) && (4294967295LL - (long long )M2) + (long long )N1 >= 0LL) && (4294967295LL - (long long )M2) + (long long )N2 >= 0LL) && (long long )i2 + (long long )j1 >= 0LL) && (long long )i2 + (long long )j2 >= 0LL) && (long long )j1 + (long long )j2 >= 0LL) && (4294967295LL + (long long )N1) - (long long )N2 >= 0LL) && (4294967295LL + (long long )M1) - (long long )N1 >= 0LL) && (4294967295LL + (long long )M1) - (long long )N2 >= 0LL) && (4294967295LL + (long long )M1) - (long long )M2 >= 0LL) && (4294967295LL + (long long )M2) - (long long )N1 >= 0LL) && (4294967295LL + (long long )M2) - (long long )N2 >= 0LL) && (4294967294LL - (long long )N1) - (long long )N2 >= 0LL) && (4294967294LL - (long long )M1) - (long long )N1 >= 0LL) && (4294967294LL - (long long )M1) - (long long )N2 >= 0LL) && (4294967294LL - (long long )M1) - (long long )M2 >= 0LL) && (4294967294LL - (long long )M2) - (long long )N1 >= 0LL) && (4294967294LL - (long long )M2) - (long long )N2 >= 0LL))) && (! multithreaded || 0 <= j1)) && (! multithreaded || ((0 <= i2 && 0 <= j1) && 0 <= j2)) [2024-06-03 21:03:01,323 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-03 21:03:01,324 INFO L106 edCorrectnessWitness]: ghost_update [L95-L95] multithreaded = 1; [2024-06-03 21:03:01,339 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-03 21:03:01,489 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 21:03:01,497 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-03 21:03:01,643 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 21:03:01,661 INFO L206 MainTranslator]: Completed translation [2024-06-03 21:03:01,661 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:03:01 WrapperNode [2024-06-03 21:03:01,661 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-03 21:03:01,662 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-03 21:03:01,662 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-03 21:03:01,662 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-03 21:03:01,675 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 03.06 09:03:01" (1/1) ... [2024-06-03 21:03:01,695 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 03.06 09:03:01" (1/1) ... [2024-06-03 21:03:01,719 INFO L138 Inliner]: procedures = 21, calls = 23, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 121 [2024-06-03 21:03:01,720 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-03 21:03:01,720 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-03 21:03:01,720 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-03 21:03:01,720 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-03 21:03:01,729 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:03:01" (1/1) ... [2024-06-03 21:03:01,729 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:03:01" (1/1) ... [2024-06-03 21:03:01,736 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:03:01" (1/1) ... [2024-06-03 21:03:01,748 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-03 21:03:01,749 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:03:01" (1/1) ... [2024-06-03 21:03:01,749 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:03:01" (1/1) ... [2024-06-03 21:03:01,754 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:03:01" (1/1) ... [2024-06-03 21:03:01,756 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:03:01" (1/1) ... [2024-06-03 21:03:01,758 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:03:01" (1/1) ... [2024-06-03 21:03:01,759 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:03:01" (1/1) ... [2024-06-03 21:03:01,761 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-03 21:03:01,762 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-03 21:03:01,762 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-03 21:03:01,762 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-03 21:03:01,763 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:03:01" (1/1) ... [2024-06-03 21:03:01,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 21:03:01,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 21:03:01,817 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-03 21:03:01,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-03 21:03:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-03 21:03:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-03 21:03:01,862 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-03 21:03:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-03 21:03:01,862 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-03 21:03:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-03 21:03:01,863 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-03 21:03:01,863 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-06-03 21:03:01,863 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-06-03 21:03:01,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-03 21:03:01,863 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-03 21:03:01,863 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-03 21:03:01,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-03 21:03:01,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-03 21:03:01,865 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-03 21:03:01,933 INFO L244 CfgBuilder]: Building ICFG [2024-06-03 21:03:01,935 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-03 21:03:02,321 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-03 21:03:02,321 INFO L293 CfgBuilder]: Performing block encoding [2024-06-03 21:03:02,469 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-03 21:03:02,469 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-06-03 21:03:02,470 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 09:03:02 BoogieIcfgContainer [2024-06-03 21:03:02,470 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-03 21:03:02,472 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-03 21:03:02,472 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-03 21:03:02,475 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-03 21:03:02,475 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.06 09:03:01" (1/4) ... [2024-06-03 21:03:02,476 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c062ad0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 09:03:02, skipping insertion in model container [2024-06-03 21:03:02,476 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 09:03:01" (2/4) ... [2024-06-03 21:03:02,476 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c062ad0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 09:03:02, skipping insertion in model container [2024-06-03 21:03:02,476 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:03:01" (3/4) ... [2024-06-03 21:03:02,476 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c062ad0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 09:03:02, skipping insertion in model container [2024-06-03 21:03:02,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 09:03:02" (4/4) ... [2024-06-03 21:03:02,477 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-proofs-counter-add-4-semi-Q67.wvr.c [2024-06-03 21:03:02,491 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-03 21:03:02,491 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-03 21:03:02,491 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-03 21:03:02,547 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-06-03 21:03:02,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 40 transitions, 108 flow [2024-06-03 21:03:02,610 INFO L124 PetriNetUnfolderBase]: 4/36 cut-off events. [2024-06-03 21:03:02,611 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-03 21:03:02,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 36 events. 4/36 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 28 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-06-03 21:03:02,614 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 40 transitions, 108 flow [2024-06-03 21:03:02,618 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 34 transitions, 89 flow [2024-06-03 21:03:02,629 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-03 21:03:02,638 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;@3189f044, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-03 21:03:02,638 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-03 21:03:02,642 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-03 21:03:02,643 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2024-06-03 21:03:02,643 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 21:03:02,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 21:03:02,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-03 21:03:02,644 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 21:03:02,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 21:03:02,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1298174766, now seen corresponding path program 1 times [2024-06-03 21:03:02,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 21:03:02,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930219988] [2024-06-03 21:03:02,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 21:03:02,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 21:03:02,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 21:03:03,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 21:03:03,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 21:03:03,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930219988] [2024-06-03 21:03:03,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930219988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 21:03:03,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 21:03:03,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-03 21:03:03,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114284355] [2024-06-03 21:03:03,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 21:03:03,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 21:03:03,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 21:03:03,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 21:03:03,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-03 21:03:03,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-03 21:03:03,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 21:03:03,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 21:03:03,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-03 21:03:03,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 21:03:03,787 INFO L124 PetriNetUnfolderBase]: 587/857 cut-off events. [2024-06-03 21:03:03,787 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2024-06-03 21:03:03,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1733 conditions, 857 events. 587/857 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2802 event pairs, 131 based on Foata normal form. 16/856 useless extension candidates. Maximal degree in co-relation 1493. Up to 510 conditions per place. [2024-06-03 21:03:03,794 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 37 selfloop transitions, 3 changer transitions 6/51 dead transitions. [2024-06-03 21:03:03,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 51 transitions, 230 flow [2024-06-03 21:03:03,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 21:03:03,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 21:03:03,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-06-03 21:03:03,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6416666666666667 [2024-06-03 21:03:03,805 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 89 flow. Second operand 3 states and 77 transitions. [2024-06-03 21:03:03,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 51 transitions, 230 flow [2024-06-03 21:03:03,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 51 transitions, 208 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-03 21:03:03,810 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 88 flow [2024-06-03 21:03:03,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2024-06-03 21:03:03,814 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -5 predicate places. [2024-06-03 21:03:03,814 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 88 flow [2024-06-03 21:03:03,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 21:03:03,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 21:03:03,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 21:03:03,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-03 21:03:03,815 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 21:03:03,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 21:03:03,816 INFO L85 PathProgramCache]: Analyzing trace with hash -505903702, now seen corresponding path program 1 times [2024-06-03 21:03:03,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 21:03:03,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211398814] [2024-06-03 21:03:03,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 21:03:03,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 21:03:03,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 21:03:03,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 21:03:03,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 21:03:03,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211398814] [2024-06-03 21:03:03,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211398814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 21:03:03,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 21:03:03,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-03 21:03:03,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032888162] [2024-06-03 21:03:03,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 21:03:03,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 21:03:03,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 21:03:03,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 21:03:03,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-03 21:03:03,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2024-06-03 21:03:03,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 21:03:03,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 21:03:03,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2024-06-03 21:03:03,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 21:03:03,997 INFO L124 PetriNetUnfolderBase]: 625/972 cut-off events. [2024-06-03 21:03:03,998 INFO L125 PetriNetUnfolderBase]: For 168/182 co-relation queries the response was YES. [2024-06-03 21:03:04,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2084 conditions, 972 events. 625/972 cut-off events. For 168/182 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3824 event pairs, 138 based on Foata normal form. 50/1013 useless extension candidates. Maximal degree in co-relation 1071. Up to 676 conditions per place. [2024-06-03 21:03:04,006 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 37 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2024-06-03 21:03:04,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 48 transitions, 204 flow [2024-06-03 21:03:04,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 21:03:04,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 21:03:04,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-06-03 21:03:04,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6583333333333333 [2024-06-03 21:03:04,010 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 88 flow. Second operand 3 states and 79 transitions. [2024-06-03 21:03:04,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 48 transitions, 204 flow [2024-06-03 21:03:04,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 48 transitions, 201 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 21:03:04,014 INFO L231 Difference]: Finished difference. Result has 37 places, 34 transitions, 106 flow [2024-06-03 21:03:04,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=37, PETRI_TRANSITIONS=34} [2024-06-03 21:03:04,015 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -6 predicate places. [2024-06-03 21:03:04,016 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 34 transitions, 106 flow [2024-06-03 21:03:04,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 21:03:04,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 21:03:04,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 21:03:04,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-03 21:03:04,019 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 21:03:04,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 21:03:04,024 INFO L85 PathProgramCache]: Analyzing trace with hash 156037926, now seen corresponding path program 1 times [2024-06-03 21:03:04,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 21:03:04,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887537938] [2024-06-03 21:03:04,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 21:03:04,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 21:03:04,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 21:03:05,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 21:03:05,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 21:03:05,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887537938] [2024-06-03 21:03:05,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887537938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 21:03:05,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 21:03:05,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 21:03:05,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274314158] [2024-06-03 21:03:05,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 21:03:05,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 21:03:05,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 21:03:05,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 21:03:05,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-03 21:03:05,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-03 21:03:05,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 34 transitions, 106 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 21:03:05,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 21:03:05,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-03 21:03:05,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 21:03:05,450 INFO L124 PetriNetUnfolderBase]: 1139/1614 cut-off events. [2024-06-03 21:03:05,450 INFO L125 PetriNetUnfolderBase]: For 496/496 co-relation queries the response was YES. [2024-06-03 21:03:05,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3959 conditions, 1614 events. 1139/1614 cut-off events. For 496/496 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6134 event pairs, 248 based on Foata normal form. 58/1536 useless extension candidates. Maximal degree in co-relation 2970. Up to 480 conditions per place. [2024-06-03 21:03:05,457 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 58 selfloop transitions, 6 changer transitions 2/70 dead transitions. [2024-06-03 21:03:05,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 70 transitions, 338 flow [2024-06-03 21:03:05,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 21:03:05,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 21:03:05,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2024-06-03 21:03:05,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53 [2024-06-03 21:03:05,463 INFO L175 Difference]: Start difference. First operand has 37 places, 34 transitions, 106 flow. Second operand 5 states and 106 transitions. [2024-06-03 21:03:05,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 70 transitions, 338 flow [2024-06-03 21:03:05,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 70 transitions, 333 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 21:03:05,467 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 135 flow [2024-06-03 21:03:05,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=135, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2024-06-03 21:03:05,468 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -2 predicate places. [2024-06-03 21:03:05,468 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 135 flow [2024-06-03 21:03:05,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 21:03:05,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 21:03:05,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 21:03:05,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-03 21:03:05,470 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 21:03:05,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 21:03:05,470 INFO L85 PathProgramCache]: Analyzing trace with hash 18046394, now seen corresponding path program 1 times [2024-06-03 21:03:05,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 21:03:05,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262007451] [2024-06-03 21:03:05,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 21:03:05,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 21:03:05,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 21:03:06,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 21:03:06,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 21:03:06,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262007451] [2024-06-03 21:03:06,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262007451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 21:03:06,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 21:03:06,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 21:03:06,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97841104] [2024-06-03 21:03:06,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 21:03:06,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 21:03:06,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 21:03:06,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 21:03:06,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-03 21:03:06,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-03 21:03:06,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 135 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 21:03:06,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 21:03:06,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-03 21:03:06,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 21:03:06,866 INFO L124 PetriNetUnfolderBase]: 1592/2324 cut-off events. [2024-06-03 21:03:06,867 INFO L125 PetriNetUnfolderBase]: For 1833/1833 co-relation queries the response was YES. [2024-06-03 21:03:06,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6239 conditions, 2324 events. 1592/2324 cut-off events. For 1833/1833 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 10176 event pairs, 254 based on Foata normal form. 136/2244 useless extension candidates. Maximal degree in co-relation 3782. Up to 1010 conditions per place. [2024-06-03 21:03:06,878 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 61 selfloop transitions, 9 changer transitions 2/77 dead transitions. [2024-06-03 21:03:06,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 77 transitions, 414 flow [2024-06-03 21:03:06,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 21:03:06,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 21:03:06,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2024-06-03 21:03:06,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.545 [2024-06-03 21:03:06,880 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 135 flow. Second operand 5 states and 109 transitions. [2024-06-03 21:03:06,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 77 transitions, 414 flow [2024-06-03 21:03:06,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 77 transitions, 401 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-03 21:03:06,885 INFO L231 Difference]: Finished difference. Result has 46 places, 40 transitions, 196 flow [2024-06-03 21:03:06,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=196, PETRI_PLACES=46, PETRI_TRANSITIONS=40} [2024-06-03 21:03:06,886 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 3 predicate places. [2024-06-03 21:03:06,886 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 196 flow [2024-06-03 21:03:06,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 21:03:06,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 21:03:06,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 21:03:06,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-03 21:03:06,887 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 21:03:06,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 21:03:06,887 INFO L85 PathProgramCache]: Analyzing trace with hash 771834214, now seen corresponding path program 1 times [2024-06-03 21:03:06,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 21:03:06,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680508833] [2024-06-03 21:03:06,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 21:03:06,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 21:03:06,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 21:03:08,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 21:03:08,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 21:03:08,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680508833] [2024-06-03 21:03:08,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680508833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 21:03:08,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 21:03:08,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 21:03:08,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508293139] [2024-06-03 21:03:08,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 21:03:08,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 21:03:08,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 21:03:08,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 21:03:08,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-03 21:03:08,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-03 21:03:08,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 40 transitions, 196 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 21:03:08,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 21:03:08,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-03 21:03:08,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 21:03:08,607 INFO L124 PetriNetUnfolderBase]: 2831/3970 cut-off events. [2024-06-03 21:03:08,608 INFO L125 PetriNetUnfolderBase]: For 4280/4280 co-relation queries the response was YES. [2024-06-03 21:03:08,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12173 conditions, 3970 events. 2831/3970 cut-off events. For 4280/4280 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 17536 event pairs, 280 based on Foata normal form. 36/3996 useless extension candidates. Maximal degree in co-relation 8118. Up to 1839 conditions per place. [2024-06-03 21:03:08,629 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 60 selfloop transitions, 21 changer transitions 4/91 dead transitions. [2024-06-03 21:03:08,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 91 transitions, 604 flow [2024-06-03 21:03:08,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 21:03:08,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 21:03:08,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2024-06-03 21:03:08,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-03 21:03:08,635 INFO L175 Difference]: Start difference. First operand has 46 places, 40 transitions, 196 flow. Second operand 6 states and 120 transitions. [2024-06-03 21:03:08,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 91 transitions, 604 flow [2024-06-03 21:03:08,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 91 transitions, 592 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 21:03:08,641 INFO L231 Difference]: Finished difference. Result has 53 places, 53 transitions, 376 flow [2024-06-03 21:03:08,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=376, PETRI_PLACES=53, PETRI_TRANSITIONS=53} [2024-06-03 21:03:08,645 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2024-06-03 21:03:08,646 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 53 transitions, 376 flow [2024-06-03 21:03:08,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 21:03:08,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 21:03:08,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 21:03:08,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-03 21:03:08,646 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 21:03:08,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 21:03:08,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1248869442, now seen corresponding path program 2 times [2024-06-03 21:03:08,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 21:03:08,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347658730] [2024-06-03 21:03:08,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 21:03:08,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 21:03:08,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 21:03:09,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 21:03:09,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 21:03:09,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347658730] [2024-06-03 21:03:09,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347658730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 21:03:09,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 21:03:09,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 21:03:09,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218959907] [2024-06-03 21:03:09,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 21:03:09,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 21:03:09,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 21:03:09,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 21:03:09,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-03 21:03:09,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-03 21:03:09,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 53 transitions, 376 flow. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 21:03:09,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 21:03:09,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-03 21:03:09,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 21:03:10,369 INFO L124 PetriNetUnfolderBase]: 3957/5424 cut-off events. [2024-06-03 21:03:10,369 INFO L125 PetriNetUnfolderBase]: For 9630/9630 co-relation queries the response was YES. [2024-06-03 21:03:10,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18475 conditions, 5424 events. 3957/5424 cut-off events. For 9630/9630 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 23991 event pairs, 456 based on Foata normal form. 72/5478 useless extension candidates. Maximal degree in co-relation 12695. Up to 2439 conditions per place. [2024-06-03 21:03:10,414 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 59 selfloop transitions, 38 changer transitions 3/106 dead transitions. [2024-06-03 21:03:10,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 106 transitions, 909 flow [2024-06-03 21:03:10,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 21:03:10,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 21:03:10,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 114 transitions. [2024-06-03 21:03:10,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-06-03 21:03:10,417 INFO L175 Difference]: Start difference. First operand has 53 places, 53 transitions, 376 flow. Second operand 6 states and 114 transitions. [2024-06-03 21:03:10,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 106 transitions, 909 flow [2024-06-03 21:03:10,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 106 transitions, 885 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 21:03:10,443 INFO L231 Difference]: Finished difference. Result has 61 places, 74 transitions, 730 flow [2024-06-03 21:03:10,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=730, PETRI_PLACES=61, PETRI_TRANSITIONS=74} [2024-06-03 21:03:10,446 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 18 predicate places. [2024-06-03 21:03:10,446 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 74 transitions, 730 flow [2024-06-03 21:03:10,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 21:03:10,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 21:03:10,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 21:03:10,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-03 21:03:10,447 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 21:03:10,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 21:03:10,447 INFO L85 PathProgramCache]: Analyzing trace with hash -452479644, now seen corresponding path program 1 times [2024-06-03 21:03:10,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 21:03:10,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486624068] [2024-06-03 21:03:10,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 21:03:10,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 21:03:10,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 21:03:10,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 21:03:10,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 21:03:10,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486624068] [2024-06-03 21:03:10,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486624068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 21:03:10,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 21:03:10,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 21:03:10,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303756064] [2024-06-03 21:03:10,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 21:03:10,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 21:03:10,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 21:03:10,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 21:03:10,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-03 21:03:10,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2024-06-03 21:03:10,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 74 transitions, 730 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 21:03:10,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 21:03:10,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2024-06-03 21:03:10,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 21:03:11,234 INFO L124 PetriNetUnfolderBase]: 5881/8960 cut-off events. [2024-06-03 21:03:11,234 INFO L125 PetriNetUnfolderBase]: For 28907/29023 co-relation queries the response was YES. [2024-06-03 21:03:11,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34183 conditions, 8960 events. 5881/8960 cut-off events. For 28907/29023 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 55318 event pairs, 1013 based on Foata normal form. 306/9197 useless extension candidates. Maximal degree in co-relation 22033. Up to 4092 conditions per place. [2024-06-03 21:03:11,294 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 90 selfloop transitions, 48 changer transitions 0/148 dead transitions. [2024-06-03 21:03:11,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 148 transitions, 1692 flow [2024-06-03 21:03:11,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 21:03:11,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 21:03:11,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2024-06-03 21:03:11,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-06-03 21:03:11,295 INFO L175 Difference]: Start difference. First operand has 61 places, 74 transitions, 730 flow. Second operand 4 states and 110 transitions. [2024-06-03 21:03:11,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 148 transitions, 1692 flow [2024-06-03 21:03:11,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 148 transitions, 1649 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 21:03:11,362 INFO L231 Difference]: Finished difference. Result has 65 places, 118 transitions, 1563 flow [2024-06-03 21:03:11,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1563, PETRI_PLACES=65, PETRI_TRANSITIONS=118} [2024-06-03 21:03:11,363 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 22 predicate places. [2024-06-03 21:03:11,363 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 118 transitions, 1563 flow [2024-06-03 21:03:11,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 21:03:11,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 21:03:11,363 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 21:03:11,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-03 21:03:11,364 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 21:03:11,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 21:03:11,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1143785436, now seen corresponding path program 2 times [2024-06-03 21:03:11,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 21:03:11,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860961836] [2024-06-03 21:03:11,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 21:03:11,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 21:03:11,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 21:03:12,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 21:03:12,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 21:03:12,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860961836] [2024-06-03 21:03:12,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860961836] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-03 21:03:12,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426268513] [2024-06-03 21:03:12,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-03 21:03:12,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-03 21:03:12,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 21:03:13,049 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-03 21:03:13,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-03 21:03:13,100 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-06-03 21:03:13,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-03 21:03:13,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 10 conjunts are in the unsatisfiable core [2024-06-03 21:03:13,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-03 21:03:13,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-03 21:03:13,462 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-03 21:03:13,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426268513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 21:03:13,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-03 21:03:13,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 10 [2024-06-03 21:03:13,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266733057] [2024-06-03 21:03:13,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 21:03:13,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 21:03:13,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 21:03:13,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 21:03:13,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 21:03:13,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-03 21:03:13,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 118 transitions, 1563 flow. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 21:03:13,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 21:03:13,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-03 21:03:13,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 21:03:15,173 INFO L124 PetriNetUnfolderBase]: 11740/16096 cut-off events. [2024-06-03 21:03:15,173 INFO L125 PetriNetUnfolderBase]: For 67490/67490 co-relation queries the response was YES. [2024-06-03 21:03:15,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68547 conditions, 16096 events. 11740/16096 cut-off events. For 67490/67490 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 86543 event pairs, 2842 based on Foata normal form. 324/16393 useless extension candidates. Maximal degree in co-relation 43365. Up to 5926 conditions per place. [2024-06-03 21:03:15,238 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 0 selfloop transitions, 0 changer transitions 272/272 dead transitions. [2024-06-03 21:03:15,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 272 transitions, 3222 flow [2024-06-03 21:03:15,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 21:03:15,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 21:03:15,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 208 transitions. [2024-06-03 21:03:15,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-03 21:03:15,240 INFO L175 Difference]: Start difference. First operand has 65 places, 118 transitions, 1563 flow. Second operand 12 states and 208 transitions. [2024-06-03 21:03:15,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 272 transitions, 3222 flow [2024-06-03 21:03:15,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 272 transitions, 3116 flow, removed 53 selfloop flow, removed 0 redundant places. [2024-06-03 21:03:15,363 INFO L231 Difference]: Finished difference. Result has 75 places, 0 transitions, 0 flow [2024-06-03 21:03:15,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1487, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=75, PETRI_TRANSITIONS=0} [2024-06-03 21:03:15,363 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 32 predicate places. [2024-06-03 21:03:15,364 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 0 transitions, 0 flow [2024-06-03 21:03:15,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 21:03:15,367 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 8 remaining) [2024-06-03 21:03:15,367 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 8 remaining) [2024-06-03 21:03:15,367 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 8 remaining) [2024-06-03 21:03:15,367 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 8 remaining) [2024-06-03 21:03:15,368 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 8 remaining) [2024-06-03 21:03:15,368 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 8 remaining) [2024-06-03 21:03:15,368 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2024-06-03 21:03:15,368 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2024-06-03 21:03:15,396 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-06-03 21:03:15,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-03 21:03:15,583 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1] [2024-06-03 21:03:15,588 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-03 21:03:15,590 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-03 21:03:15,599 INFO L507 ceAbstractionStarter]: Automizer considered 4 witness invariants [2024-06-03 21:03:15,599 INFO L508 ceAbstractionStarter]: WitnessConsidered=4 [2024-06-03 21:03:15,600 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.06 09:03:15 BasicIcfg [2024-06-03 21:03:15,600 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-03 21:03:15,601 INFO L158 Benchmark]: Toolchain (without parser) took 14313.95ms. Allocated memory was 197.1MB in the beginning and 1.2GB in the end (delta: 985.7MB). Free memory was 122.0MB in the beginning and 897.6MB in the end (delta: -775.5MB). Peak memory consumption was 443.8MB. Max. memory is 16.1GB. [2024-06-03 21:03:15,601 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 113.2MB. Free memory is still 77.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 21:03:15,601 INFO L158 Benchmark]: Witness Parser took 0.13ms. Allocated memory is still 197.1MB. Free memory is still 127.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 21:03:15,602 INFO L158 Benchmark]: CACSL2BoogieTranslator took 373.47ms. Allocated memory is still 197.1MB. Free memory was 121.8MB in the beginning and 166.7MB in the end (delta: -44.9MB). Peak memory consumption was 25.5MB. Max. memory is 16.1GB. [2024-06-03 21:03:15,602 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.83ms. Allocated memory is still 197.1MB. Free memory was 166.7MB in the beginning and 163.5MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-03 21:03:15,602 INFO L158 Benchmark]: Boogie Preprocessor took 41.17ms. Allocated memory is still 197.1MB. Free memory was 163.5MB in the beginning and 160.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-03 21:03:15,603 INFO L158 Benchmark]: RCFGBuilder took 708.04ms. Allocated memory is still 197.1MB. Free memory was 160.4MB in the beginning and 89.1MB in the end (delta: 71.3MB). Peak memory consumption was 71.3MB. Max. memory is 16.1GB. [2024-06-03 21:03:15,603 INFO L158 Benchmark]: TraceAbstraction took 13128.13ms. Allocated memory was 197.1MB in the beginning and 1.2GB in the end (delta: 985.7MB). Free memory was 89.1MB in the beginning and 897.6MB in the end (delta: -808.5MB). Peak memory consumption was 409.9MB. Max. memory is 16.1GB. [2024-06-03 21:03:15,607 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 113.2MB. Free memory is still 77.0MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.13ms. Allocated memory is still 197.1MB. Free memory is still 127.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 373.47ms. Allocated memory is still 197.1MB. Free memory was 121.8MB in the beginning and 166.7MB in the end (delta: -44.9MB). Peak memory consumption was 25.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.83ms. Allocated memory is still 197.1MB. Free memory was 166.7MB in the beginning and 163.5MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.17ms. Allocated memory is still 197.1MB. Free memory was 163.5MB in the beginning and 160.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 708.04ms. Allocated memory is still 197.1MB. Free memory was 160.4MB in the beginning and 89.1MB in the end (delta: 71.3MB). Peak memory consumption was 71.3MB. Max. memory is 16.1GB. * TraceAbstraction took 13128.13ms. Allocated memory was 197.1MB in the beginning and 1.2GB in the end (delta: 985.7MB). Free memory was 89.1MB in the beginning and 897.6MB in the end (delta: -808.5MB). Peak memory consumption was 409.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 96]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 97]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 98]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 99]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 53 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 13.0s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 384 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 312 mSDsluCounter, 21 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 64 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1429 IncrementalHoareTripleChecker+Invalid, 1493 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 64 mSolverCounterUnsat, 21 mSDtfsCounter, 1429 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1563occurred in iteration=7, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 154 NumberOfCodeBlocks, 142 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 145 ConstructedInterpolants, 0 QuantifiedInterpolants, 6281 SizeOfPredicates, 0 NumberOfNonLiveVariables, 68 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 3/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-03 21:03:15,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE