./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/circular_buffer_ok.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ab2e0ac4 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/circular_buffer_ok.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-ab2e0ac-m [2024-01-29 14:20:57,143 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-29 14:20:57,212 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-29 14:20:57,215 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-29 14:20:57,216 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-29 14:20:57,239 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-29 14:20:57,241 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-29 14:20:57,241 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-29 14:20:57,242 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-29 14:20:57,245 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-29 14:20:57,245 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-29 14:20:57,245 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-29 14:20:57,246 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-29 14:20:57,247 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-29 14:20:57,247 INFO L153 SettingsManager]: * Use SBE=true [2024-01-29 14:20:57,247 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-29 14:20:57,248 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-29 14:20:57,248 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-29 14:20:57,248 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-29 14:20:57,248 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-29 14:20:57,248 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-29 14:20:57,249 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-29 14:20:57,249 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-29 14:20:57,249 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-29 14:20:57,249 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-29 14:20:57,250 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-29 14:20:57,250 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-29 14:20:57,250 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-29 14:20:57,250 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-29 14:20:57,251 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-29 14:20:57,252 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-29 14:20:57,252 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-29 14:20:57,252 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-29 14:20:57,252 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-29 14:20:57,252 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-29 14:20:57,252 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-29 14:20:57,253 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-29 14:20:57,253 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-29 14:20:57,253 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-29 14:20:57,253 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-29 14:20:57,253 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-29 14:20:57,254 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-29 14:20:57,254 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-29 14:20:57,254 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-29 14:20:57,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-29 14:20:57,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-29 14:20:57,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-29 14:20:57,478 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-29 14:20:57,478 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-29 14:20:57,479 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/circular_buffer_ok.yml/witness.yml [2024-01-29 14:20:57,630 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-29 14:20:57,630 INFO L274 PluginConnector]: CDTParser initialized [2024-01-29 14:20:57,632 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i [2024-01-29 14:20:58,696 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-29 14:20:58,883 INFO L384 CDTParser]: Found 1 translation units. [2024-01-29 14:20:58,887 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i [2024-01-29 14:20:58,900 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec3f293c0/efd5f8d26ae6404a955d96ee1ba7f850/FLAG7db59d270 [2024-01-29 14:20:58,910 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec3f293c0/efd5f8d26ae6404a955d96ee1ba7f850 [2024-01-29 14:20:58,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-29 14:20:58,912 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-29 14:20:58,914 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-29 14:20:58,914 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-29 14:20:58,918 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-29 14:20:58,918 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 02:20:57" (1/2) ... [2024-01-29 14:20:58,919 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@141d741a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:20:58, skipping insertion in model container [2024-01-29 14:20:58,919 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 02:20:57" (1/2) ... [2024-01-29 14:20:58,920 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@529ee55b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:20:58, skipping insertion in model container [2024-01-29 14:20:58,920 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 02:20:58" (2/2) ... [2024-01-29 14:20:58,920 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@141d741a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:20:58, skipping insertion in model container [2024-01-29 14:20:58,921 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 02:20:58" (2/2) ... [2024-01-29 14:20:58,921 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-29 14:20:59,032 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-29 14:20:59,033 INFO L98 nessWitnessExtractor]: Location invariant before [L732-L732] (unsigned long )arg == 0UL [2024-01-29 14:20:59,033 INFO L98 nessWitnessExtractor]: Location invariant before [L732-L732] receive == (_Bool)0 || receive == (_Bool)1 [2024-01-29 14:20:59,033 INFO L98 nessWitnessExtractor]: Location invariant before [L732-L732] 0 <= value [2024-01-29 14:20:59,033 INFO L98 nessWitnessExtractor]: Location invariant before [L732-L732] ((((i == 3 || i == 2) || i == 1) || (0 == i && i == 0)) || (5 <= i && i <= 6)) || i == 4 [2024-01-29 14:20:59,033 INFO L98 nessWitnessExtractor]: Location invariant before [L732-L732] value <= 6 [2024-01-29 14:20:59,034 INFO L98 nessWitnessExtractor]: Location invariant before [L732-L732] send == (_Bool)1 [2024-01-29 14:20:59,034 INFO L98 nessWitnessExtractor]: Location invariant before [L692-L692] receive == (_Bool)0 [2024-01-29 14:20:59,034 INFO L98 nessWitnessExtractor]: Location invariant before [L692-L692] send == (_Bool)0 [2024-01-29 14:20:59,034 INFO L98 nessWitnessExtractor]: Location invariant before [L692-L692] max == 10 [2024-01-29 14:20:59,034 INFO L98 nessWitnessExtractor]: Location invariant before [L692-L692] 10 == max [2024-01-29 14:20:59,034 INFO L98 nessWitnessExtractor]: Location invariant before [L692-L692] value == 0 [2024-01-29 14:20:59,034 INFO L98 nessWitnessExtractor]: Location invariant before [L736-L736] receive == (_Bool)0 || receive == (_Bool)1 [2024-01-29 14:20:59,034 INFO L98 nessWitnessExtractor]: Location invariant before [L736-L736] send == (_Bool)0 [2024-01-29 14:20:59,035 INFO L98 nessWitnessExtractor]: Location invariant before [L736-L736] ((((i == 3 || i == 2) || i == 1) || (0 == i && i == 0)) || (5 <= i && i <= 6)) || i == 4 [2024-01-29 14:20:59,035 INFO L98 nessWitnessExtractor]: Location invariant before [L736-L736] (unsigned long )arg == 0UL [2024-01-29 14:20:59,035 INFO L98 nessWitnessExtractor]: Location invariant before [L736-L736] 0 <= value [2024-01-29 14:20:59,035 INFO L98 nessWitnessExtractor]: Location invariant before [L736-L736] value <= 6 [2024-01-29 14:20:59,035 INFO L98 nessWitnessExtractor]: Loop invariant at [L743-L754] (unsigned long )arg == 0UL [2024-01-29 14:20:59,035 INFO L98 nessWitnessExtractor]: Location invariant before [L727-L727] ((((i == 4 || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (5 <= i && i <= 6) [2024-01-29 14:20:59,035 INFO L98 nessWitnessExtractor]: Location invariant before [L727-L727] (unsigned long )arg == 0UL [2024-01-29 14:20:59,035 INFO L98 nessWitnessExtractor]: Location invariant before [L711-L711] 0 <= b [2024-01-29 14:20:59,036 INFO L98 nessWitnessExtractor]: Location invariant before [L711-L711] 0 <= value [2024-01-29 14:20:59,036 INFO L98 nessWitnessExtractor]: Location invariant before [L711-L711] receive == (_Bool)0 || receive == (_Bool)1 [2024-01-29 14:20:59,036 INFO L98 nessWitnessExtractor]: Location invariant before [L711-L711] value <= 6 [2024-01-29 14:20:59,036 INFO L98 nessWitnessExtractor]: Location invariant before [L711-L711] b <= 6 [2024-01-29 14:20:59,036 INFO L98 nessWitnessExtractor]: Location invariant before [L711-L711] send == (_Bool)1 [2024-01-29 14:20:59,036 INFO L98 nessWitnessExtractor]: Location invariant before [L762-L762] value == 0 [2024-01-29 14:20:59,037 INFO L98 nessWitnessExtractor]: Location invariant before [L762-L762] receive == (_Bool)0 [2024-01-29 14:20:59,037 INFO L98 nessWitnessExtractor]: Location invariant before [L762-L762] send == (_Bool)1 [2024-01-29 14:20:59,037 INFO L98 nessWitnessExtractor]: Location invariant after [L730-L731] 0 <= value [2024-01-29 14:20:59,037 INFO L98 nessWitnessExtractor]: Location invariant before [L730-L731] 0 <= value [2024-01-29 14:20:59,037 INFO L98 nessWitnessExtractor]: Location invariant before [L730-L731] send == (_Bool)1 [2024-01-29 14:20:59,037 INFO L98 nessWitnessExtractor]: Location invariant after [L730-L731] ((((i == 4 || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (5 <= i && i <= 6) [2024-01-29 14:20:59,037 INFO L98 nessWitnessExtractor]: Location invariant after [L730-L731] send == (_Bool)1 [2024-01-29 14:20:59,037 INFO L98 nessWitnessExtractor]: Location invariant after [L730-L731] (unsigned long )arg == 0UL [2024-01-29 14:20:59,038 INFO L98 nessWitnessExtractor]: Location invariant before [L730-L731] receive == (_Bool)0 || receive == (_Bool)1 [2024-01-29 14:20:59,038 INFO L98 nessWitnessExtractor]: Location invariant before [L730-L731] (((((((((i == 4 || i == 3) || i == 3) || i == 2) || i == 2) || i == 1) || i == 1) || (0 == i && i == 0)) || (0 == i && i == 0)) || (5 <= i && i <= 6)) || (5 <= i && i <= 6) [2024-01-29 14:20:59,038 INFO L98 nessWitnessExtractor]: Location invariant before [L730-L731] value <= 6 [2024-01-29 14:20:59,039 INFO L98 nessWitnessExtractor]: Location invariant before [L730-L731] (unsigned long )arg == 0UL [2024-01-29 14:20:59,039 INFO L98 nessWitnessExtractor]: Location invariant after [L730-L731] value <= 6 [2024-01-29 14:20:59,039 INFO L98 nessWitnessExtractor]: Location invariant after [L730-L731] receive == (_Bool)0 || receive == (_Bool)1 [2024-01-29 14:20:59,039 INFO L98 nessWitnessExtractor]: Location invariant before [L746-L752] 0 <= value [2024-01-29 14:20:59,040 INFO L98 nessWitnessExtractor]: Location invariant before [L746-L752] (unsigned long )arg == 0UL [2024-01-29 14:20:59,040 INFO L98 nessWitnessExtractor]: Location invariant before [L746-L752] ((((i == 4 || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (5 <= i && i <= 6) [2024-01-29 14:20:59,040 INFO L98 nessWitnessExtractor]: Location invariant before [L746-L752] send == (_Bool)0 || send == (_Bool)1 [2024-01-29 14:20:59,040 INFO L98 nessWitnessExtractor]: Location invariant before [L746-L752] receive == (_Bool)0 || receive == (_Bool)1 [2024-01-29 14:20:59,040 INFO L98 nessWitnessExtractor]: Location invariant before [L746-L752] value <= 6 [2024-01-29 14:20:59,040 INFO L98 nessWitnessExtractor]: Location invariant before [L728-L735] value <= 6 [2024-01-29 14:20:59,040 INFO L98 nessWitnessExtractor]: Location invariant before [L728-L735] receive == (_Bool)0 || receive == (_Bool)1 [2024-01-29 14:20:59,041 INFO L98 nessWitnessExtractor]: Location invariant before [L728-L735] 0 <= value [2024-01-29 14:20:59,041 INFO L98 nessWitnessExtractor]: Location invariant before [L728-L735] (unsigned long )arg == 0UL [2024-01-29 14:20:59,041 INFO L98 nessWitnessExtractor]: Location invariant before [L728-L735] send == (_Bool)0 || send == (_Bool)1 [2024-01-29 14:20:59,041 INFO L98 nessWitnessExtractor]: Location invariant before [L728-L735] ((((i == 4 || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (5 <= i && i <= 6) [2024-01-29 14:20:59,041 INFO L98 nessWitnessExtractor]: Location invariant before [L738-L738] i == 7 [2024-01-29 14:20:59,041 INFO L98 nessWitnessExtractor]: Location invariant before [L738-L738] (unsigned long )arg == 0UL [2024-01-29 14:20:59,042 INFO L98 nessWitnessExtractor]: Location invariant before [L708-L719] b <= 6 [2024-01-29 14:20:59,042 INFO L98 nessWitnessExtractor]: Location invariant before [L708-L719] send == (_Bool)1 [2024-01-29 14:20:59,043 INFO L98 nessWitnessExtractor]: Location invariant before [L708-L719] receive == (_Bool)0 || receive == (_Bool)1 [2024-01-29 14:20:59,043 INFO L98 nessWitnessExtractor]: Location invariant before [L708-L719] 0 <= b [2024-01-29 14:20:59,043 INFO L98 nessWitnessExtractor]: Location invariant before [L708-L719] 0 <= value [2024-01-29 14:20:59,043 INFO L98 nessWitnessExtractor]: Location invariant before [L708-L719] value <= 6 [2024-01-29 14:20:59,043 INFO L98 nessWitnessExtractor]: Location invariant before [L763-L763] receive == (_Bool)0 [2024-01-29 14:20:59,043 INFO L98 nessWitnessExtractor]: Location invariant before [L763-L763] value == 0 [2024-01-29 14:20:59,043 INFO L98 nessWitnessExtractor]: Location invariant before [L763-L763] send == (_Bool)1 [2024-01-29 14:20:59,044 INFO L98 nessWitnessExtractor]: Location invariant before [L745-L745] (unsigned long )arg == 0UL [2024-01-29 14:20:59,044 INFO L98 nessWitnessExtractor]: Location invariant before [L745-L745] ((((i == 4 || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (5 <= i && i <= 6) [2024-01-29 14:20:59,044 INFO L98 nessWitnessExtractor]: Location invariant before [L703-L703] receive == (_Bool)1 [2024-01-29 14:20:59,044 INFO L98 nessWitnessExtractor]: Location invariant before [L703-L703] 0 <= value [2024-01-29 14:20:59,044 INFO L98 nessWitnessExtractor]: Location invariant before [L703-L703] send == (_Bool)0 || send == (_Bool)1 [2024-01-29 14:20:59,044 INFO L98 nessWitnessExtractor]: Location invariant before [L703-L703] value <= 6 [2024-01-29 14:20:59,044 INFO L98 nessWitnessExtractor]: Location invariant before [L750-L750] -128 <= value [2024-01-29 14:20:59,044 INFO L98 nessWitnessExtractor]: Location invariant before [L750-L750] send == (_Bool)0 || send == (_Bool)1 [2024-01-29 14:20:59,044 INFO L98 nessWitnessExtractor]: Location invariant before [L750-L750] receive == (_Bool)1 [2024-01-29 14:20:59,045 INFO L98 nessWitnessExtractor]: Location invariant before [L750-L750] value <= 127 [2024-01-29 14:20:59,045 INFO L98 nessWitnessExtractor]: Location invariant before [L750-L750] 0 <= value [2024-01-29 14:20:59,045 INFO L98 nessWitnessExtractor]: Location invariant before [L750-L750] (unsigned long )arg == 0UL [2024-01-29 14:20:59,045 INFO L98 nessWitnessExtractor]: Location invariant before [L750-L750] ((((i == 3 || i == 2) || i == 1) || (0 == i && i == 0)) || (5 <= i && i <= 6)) || i == 4 [2024-01-29 14:20:59,045 INFO L98 nessWitnessExtractor]: Location invariant before [L750-L750] value <= 6 [2024-01-29 14:20:59,045 INFO L98 nessWitnessExtractor]: Location invariant before [L713-L714] value <= 6 [2024-01-29 14:20:59,045 INFO L98 nessWitnessExtractor]: Location invariant before [L713-L714] 0 <= b [2024-01-29 14:20:59,045 INFO L98 nessWitnessExtractor]: Location invariant before [L713-L714] b <= 6 [2024-01-29 14:20:59,045 INFO L98 nessWitnessExtractor]: Location invariant before [L713-L714] receive == (_Bool)0 || receive == (_Bool)1 [2024-01-29 14:20:59,046 INFO L98 nessWitnessExtractor]: Location invariant before [L713-L714] send == (_Bool)1 [2024-01-29 14:20:59,046 INFO L98 nessWitnessExtractor]: Location invariant before [L713-L714] 0 <= value [2024-01-29 14:20:59,046 INFO L98 nessWitnessExtractor]: Location invariant before [L753-L753] send == (_Bool)0 || send == (_Bool)1 [2024-01-29 14:20:59,046 INFO L98 nessWitnessExtractor]: Location invariant before [L753-L753] ((((i == 3 || i == 2) || i == 1) || (0 == i && i == 0)) || (5 <= i && i <= 6)) || i == 4 [2024-01-29 14:20:59,046 INFO L98 nessWitnessExtractor]: Location invariant before [L753-L753] (unsigned long )arg == 0UL [2024-01-29 14:20:59,046 INFO L98 nessWitnessExtractor]: Location invariant before [L753-L753] 0 <= value [2024-01-29 14:20:59,046 INFO L98 nessWitnessExtractor]: Location invariant before [L753-L753] value <= 6 [2024-01-29 14:20:59,046 INFO L98 nessWitnessExtractor]: Location invariant before [L753-L753] receive == (_Bool)0 [2024-01-29 14:20:59,047 INFO L98 nessWitnessExtractor]: Location invariant before [L759-L759] send == (_Bool)0 [2024-01-29 14:20:59,047 INFO L98 nessWitnessExtractor]: Location invariant before [L759-L759] receive == (_Bool)0 [2024-01-29 14:20:59,047 INFO L98 nessWitnessExtractor]: Location invariant before [L759-L759] value == 0 [2024-01-29 14:20:59,047 INFO L98 nessWitnessExtractor]: Location invariant after [L689-L693] receive == (_Bool)0 [2024-01-29 14:20:59,047 INFO L98 nessWitnessExtractor]: Location invariant after [L689-L693] max == 10 [2024-01-29 14:20:59,047 INFO L98 nessWitnessExtractor]: Location invariant after [L689-L693] 10 == max [2024-01-29 14:20:59,047 INFO L98 nessWitnessExtractor]: Location invariant after [L689-L693] value == 0 [2024-01-29 14:20:59,047 INFO L98 nessWitnessExtractor]: Location invariant after [L689-L693] send == (_Bool)0 [2024-01-29 14:20:59,047 INFO L98 nessWitnessExtractor]: Location invariant before [L710-L710] send == (_Bool)1 [2024-01-29 14:20:59,048 INFO L98 nessWitnessExtractor]: Location invariant before [L710-L710] receive == (_Bool)0 || receive == (_Bool)1 [2024-01-29 14:20:59,048 INFO L98 nessWitnessExtractor]: Location invariant before [L710-L710] 0 <= value [2024-01-29 14:20:59,048 INFO L98 nessWitnessExtractor]: Location invariant before [L710-L710] 0 <= b [2024-01-29 14:20:59,048 INFO L98 nessWitnessExtractor]: Location invariant before [L710-L710] b <= 6 [2024-01-29 14:20:59,048 INFO L98 nessWitnessExtractor]: Location invariant before [L710-L710] value <= 6 [2024-01-29 14:20:59,048 INFO L98 nessWitnessExtractor]: Location invariant before [L755-L755] (unsigned long )arg == 0UL [2024-01-29 14:20:59,048 INFO L98 nessWitnessExtractor]: Location invariant before [L755-L755] i == 7 [2024-01-29 14:20:59,049 INFO L98 nessWitnessExtractor]: Location invariant before [L760-L760] value == 0 [2024-01-29 14:20:59,049 INFO L98 nessWitnessExtractor]: Location invariant before [L760-L760] send == (_Bool)0 [2024-01-29 14:20:59,050 INFO L98 nessWitnessExtractor]: Location invariant before [L760-L760] receive == (_Bool)0 [2024-01-29 14:20:59,050 INFO L98 nessWitnessExtractor]: Location invariant before [L733-L733] send == (_Bool)1 [2024-01-29 14:20:59,051 INFO L98 nessWitnessExtractor]: Location invariant before [L733-L733] receive == (_Bool)0 || receive == (_Bool)1 [2024-01-29 14:20:59,051 INFO L98 nessWitnessExtractor]: Location invariant before [L733-L733] (unsigned long )arg == 0UL [2024-01-29 14:20:59,051 INFO L98 nessWitnessExtractor]: Location invariant before [L733-L733] (((((value == 3 && i == 3) || (value == 2 && i == 2)) || (value == 1 && i == 1)) || ((0 == i && value == 0) && i == 0)) || (((5 <= value && 5 <= i) && value <= 6) && i <= 6)) || (value == 4 && i == 4) [2024-01-29 14:20:59,051 INFO L98 nessWitnessExtractor]: Location invariant before [L699-L699] receive == (_Bool)1 [2024-01-29 14:20:59,051 INFO L98 nessWitnessExtractor]: Location invariant before [L699-L699] send == (_Bool)0 || send == (_Bool)1 [2024-01-29 14:20:59,051 INFO L98 nessWitnessExtractor]: Location invariant before [L699-L699] 0 <= value [2024-01-29 14:20:59,052 INFO L98 nessWitnessExtractor]: Location invariant before [L699-L699] value <= 6 [2024-01-29 14:20:59,052 INFO L98 nessWitnessExtractor]: Location invariant before [L718-L718] 0 <= b [2024-01-29 14:20:59,052 INFO L98 nessWitnessExtractor]: Location invariant before [L718-L718] 0 <= value [2024-01-29 14:20:59,052 INFO L98 nessWitnessExtractor]: Location invariant before [L718-L718] b <= 6 [2024-01-29 14:20:59,052 INFO L98 nessWitnessExtractor]: Location invariant before [L718-L718] send == (_Bool)1 [2024-01-29 14:20:59,052 INFO L98 nessWitnessExtractor]: Location invariant before [L718-L718] receive == (_Bool)0 || receive == (_Bool)1 [2024-01-29 14:20:59,052 INFO L98 nessWitnessExtractor]: Location invariant before [L718-L718] value <= 6 [2024-01-29 14:20:59,052 INFO L98 nessWitnessExtractor]: Location invariant before [L734-L734] receive == (_Bool)0 || receive == (_Bool)1 [2024-01-29 14:20:59,052 INFO L98 nessWitnessExtractor]: Location invariant before [L734-L734] (unsigned long )arg == 0UL [2024-01-29 14:20:59,053 INFO L98 nessWitnessExtractor]: Location invariant before [L734-L734] (((((value == 3 && i == 3) || (value == 2 && i == 2)) || (value == 1 && i == 1)) || ((0 == i && value == 0) && i == 0)) || (((5 <= value && 5 <= i) && value <= 6) && i <= 6)) || (value == 4 && i == 4) [2024-01-29 14:20:59,053 INFO L98 nessWitnessExtractor]: Location invariant before [L734-L734] send == (_Bool)0 [2024-01-29 14:20:59,053 INFO L98 nessWitnessExtractor]: Location invariant before [L761-L761] receive == (_Bool)0 [2024-01-29 14:20:59,053 INFO L98 nessWitnessExtractor]: Location invariant before [L761-L761] send == (_Bool)0 [2024-01-29 14:20:59,053 INFO L98 nessWitnessExtractor]: Location invariant before [L761-L761] value == 0 [2024-01-29 14:20:59,053 INFO L98 nessWitnessExtractor]: Location invariant before [L751-L751] (unsigned long )arg == 0UL [2024-01-29 14:20:59,054 INFO L98 nessWitnessExtractor]: Location invariant before [L751-L751] value <= 127 [2024-01-29 14:20:59,054 INFO L98 nessWitnessExtractor]: Location invariant before [L751-L751] send == (_Bool)0 || send == (_Bool)1 [2024-01-29 14:20:59,054 INFO L98 nessWitnessExtractor]: Location invariant before [L751-L751] -128 <= value [2024-01-29 14:20:59,054 INFO L98 nessWitnessExtractor]: Location invariant before [L751-L751] 0 <= value [2024-01-29 14:20:59,054 INFO L98 nessWitnessExtractor]: Location invariant before [L751-L751] ((((i == 3 || i == 2) || i == 1) || (0 == i && i == 0)) || (5 <= i && i <= 6)) || i == 4 [2024-01-29 14:20:59,054 INFO L98 nessWitnessExtractor]: Location invariant before [L751-L751] value <= 6 [2024-01-29 14:20:59,054 INFO L98 nessWitnessExtractor]: Location invariant before [L751-L751] receive == (_Bool)0 [2024-01-29 14:20:59,054 INFO L98 nessWitnessExtractor]: Loop invariant at [L725-L737] (unsigned long )arg == 0UL [2024-01-29 14:20:59,054 INFO L98 nessWitnessExtractor]: Location invariant before [L698-L698] send == (_Bool)0 || send == (_Bool)1 [2024-01-29 14:20:59,055 INFO L98 nessWitnessExtractor]: Location invariant before [L698-L698] 0 <= value [2024-01-29 14:20:59,055 INFO L98 nessWitnessExtractor]: Location invariant before [L698-L698] value <= 6 [2024-01-29 14:20:59,055 INFO L98 nessWitnessExtractor]: Location invariant before [L698-L698] receive == (_Bool)1 [2024-01-29 14:20:59,055 INFO L98 nessWitnessExtractor]: Location invariant before [L691-L691] send == (_Bool)0 [2024-01-29 14:20:59,055 INFO L98 nessWitnessExtractor]: Location invariant before [L691-L691] receive == (_Bool)0 [2024-01-29 14:20:59,056 INFO L98 nessWitnessExtractor]: Location invariant before [L691-L691] max == 10 [2024-01-29 14:20:59,056 INFO L98 nessWitnessExtractor]: Location invariant before [L691-L691] 10 == max [2024-01-29 14:20:59,056 INFO L98 nessWitnessExtractor]: Location invariant before [L691-L691] value == 0 [2024-01-29 14:20:59,056 INFO L98 nessWitnessExtractor]: Location invariant before [L748-L749] (((((((((i == 4 || i == 3) || i == 3) || i == 2) || i == 2) || i == 1) || i == 1) || (0 == i && i == 0)) || (0 == i && i == 0)) || (5 <= i && i <= 6)) || (5 <= i && i <= 6) [2024-01-29 14:20:59,056 INFO L98 nessWitnessExtractor]: Location invariant before [L748-L749] send == (_Bool)0 || send == (_Bool)1 [2024-01-29 14:20:59,056 INFO L98 nessWitnessExtractor]: Location invariant before [L748-L749] 0 <= value [2024-01-29 14:20:59,056 INFO L98 nessWitnessExtractor]: Location invariant after [L748-L749] ((((i == 4 || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (5 <= i && i <= 6) [2024-01-29 14:20:59,056 INFO L98 nessWitnessExtractor]: Location invariant before [L748-L749] receive == (_Bool)1 [2024-01-29 14:20:59,057 INFO L98 nessWitnessExtractor]: Location invariant before [L748-L749] (unsigned long )arg == 0UL [2024-01-29 14:20:59,057 INFO L98 nessWitnessExtractor]: Location invariant after [L748-L749] (unsigned long )arg == 0UL [2024-01-29 14:20:59,057 INFO L98 nessWitnessExtractor]: Location invariant after [L748-L749] value <= 6 [2024-01-29 14:20:59,057 INFO L98 nessWitnessExtractor]: Location invariant after [L748-L749] receive == (_Bool)1 [2024-01-29 14:20:59,057 INFO L98 nessWitnessExtractor]: Location invariant after [L748-L749] send == (_Bool)0 || send == (_Bool)1 [2024-01-29 14:20:59,057 INFO L98 nessWitnessExtractor]: Location invariant before [L748-L749] value <= 6 [2024-01-29 14:20:59,057 INFO L98 nessWitnessExtractor]: Location invariant after [L748-L749] 0 <= value [2024-01-29 14:20:59,057 INFO L98 nessWitnessExtractor]: Location invariant before [L696-L704] receive == (_Bool)1 [2024-01-29 14:20:59,057 INFO L98 nessWitnessExtractor]: Location invariant before [L696-L704] send == (_Bool)0 || send == (_Bool)1 [2024-01-29 14:20:59,058 INFO L98 nessWitnessExtractor]: Location invariant before [L696-L704] value <= 6 [2024-01-29 14:20:59,058 INFO L98 nessWitnessExtractor]: Location invariant before [L696-L704] 0 <= value [2024-01-29 14:20:59,058 INFO L98 nessWitnessExtractor]: Location invariant before [L720-L720] send == (_Bool)1 [2024-01-29 14:20:59,058 INFO L98 nessWitnessExtractor]: Location invariant before [L720-L720] receive == (_Bool)0 || receive == (_Bool)1 [2024-01-29 14:20:59,059 INFO L98 nessWitnessExtractor]: Location invariant before [L720-L720] value <= 6 [2024-01-29 14:20:59,059 INFO L98 nessWitnessExtractor]: Location invariant before [L720-L720] 0 <= b [2024-01-29 14:20:59,059 INFO L98 nessWitnessExtractor]: Location invariant before [L720-L720] b <= 6 [2024-01-29 14:20:59,059 INFO L98 nessWitnessExtractor]: Location invariant before [L720-L720] 0 <= value [2024-01-29 14:20:59,092 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-29 14:20:59,365 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30451,30464] [2024-01-29 14:20:59,373 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30681,30694] [2024-01-29 14:20:59,376 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30979,30992] [2024-01-29 14:20:59,398 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-29 14:20:59,406 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-29 14:20:59,450 WARN L424 MainDispatcher]: Unable to annotate void initLog(int max) { buffer_size = max; first = next = 0; } with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-29 14:20:59,471 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30451,30464] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-29 14:20:59,518 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30681,30694] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-29 14:20:59,547 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30979,30992] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-29 14:20:59,567 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-29 14:20:59,591 INFO L206 MainTranslator]: Completed translation [2024-01-29 14:20:59,591 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:20:59 WrapperNode [2024-01-29 14:20:59,591 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-29 14:20:59,592 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-29 14:20:59,592 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-29 14:20:59,592 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-29 14:20:59,597 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:20:59" (1/1) ... [2024-01-29 14:20:59,608 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:20:59" (1/1) ... [2024-01-29 14:20:59,637 INFO L138 Inliner]: procedures = 169, calls = 38, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 315 [2024-01-29 14:20:59,637 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-29 14:20:59,638 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-29 14:20:59,638 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-29 14:20:59,638 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-29 14:20:59,646 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:20:59" (1/1) ... [2024-01-29 14:20:59,646 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:20:59" (1/1) ... [2024-01-29 14:20:59,650 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:20:59" (1/1) ... [2024-01-29 14:20:59,661 INFO L175 MemorySlicer]: Split 18 memory accesses to 6 slices as follows [2, 1, 3, 8, 2, 2]. 44 percent of accesses are in the largest equivalence class. The 11 initializations are split as follows [2, 1, 0, 8, 0, 0]. The 4 writes are split as follows [0, 0, 2, 0, 1, 1]. [2024-01-29 14:20:59,661 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:20:59" (1/1) ... [2024-01-29 14:20:59,661 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:20:59" (1/1) ... [2024-01-29 14:20:59,670 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:20:59" (1/1) ... [2024-01-29 14:20:59,673 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:20:59" (1/1) ... [2024-01-29 14:20:59,674 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:20:59" (1/1) ... [2024-01-29 14:20:59,676 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:20:59" (1/1) ... [2024-01-29 14:20:59,679 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-29 14:20:59,679 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-29 14:20:59,679 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-29 14:20:59,679 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-29 14:20:59,680 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:20:59" (1/1) ... [2024-01-29 14:20:59,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-29 14:20:59,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:20:59,699 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-29 14:20:59,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-29 14:20:59,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-29 14:20:59,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-29 14:20:59,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-29 14:20:59,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-29 14:20:59,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-29 14:20:59,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-01-29 14:20:59,726 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-01-29 14:20:59,726 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-01-29 14:20:59,726 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-01-29 14:20:59,726 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-01-29 14:20:59,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-29 14:20:59,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-29 14:20:59,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-29 14:20:59,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-29 14:20:59,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-29 14:20:59,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-01-29 14:20:59,727 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-29 14:20:59,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-29 14:20:59,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-29 14:20:59,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-29 14:20:59,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-01-29 14:20:59,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-01-29 14:20:59,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-01-29 14:20:59,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-01-29 14:20:59,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-01-29 14:20:59,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-01-29 14:20:59,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-29 14:20:59,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-29 14:20:59,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-29 14:20:59,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-29 14:20:59,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-29 14:20:59,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-01-29 14:20:59,729 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-29 14:20:59,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-29 14:20:59,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-29 14:20:59,730 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-29 14:20:59,835 INFO L244 CfgBuilder]: Building ICFG [2024-01-29 14:20:59,837 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-29 14:21:00,302 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-29 14:21:00,302 INFO L293 CfgBuilder]: Performing block encoding [2024-01-29 14:21:00,391 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-29 14:21:00,392 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-01-29 14:21:00,392 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 02:21:00 BoogieIcfgContainer [2024-01-29 14:21:00,392 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-29 14:21:00,393 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-29 14:21:00,394 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-29 14:21:00,396 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-29 14:21:00,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 02:20:57" (1/4) ... [2024-01-29 14:21:00,396 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59f49644 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 29.01 02:21:00, skipping insertion in model container [2024-01-29 14:21:00,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.01 02:20:58" (2/4) ... [2024-01-29 14:21:00,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59f49644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 02:21:00, skipping insertion in model container [2024-01-29 14:21:00,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:20:59" (3/4) ... [2024-01-29 14:21:00,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59f49644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 02:21:00, skipping insertion in model container [2024-01-29 14:21:00,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 02:21:00" (4/4) ... [2024-01-29 14:21:00,398 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_ok.i [2024-01-29 14:21:00,410 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-29 14:21:00,411 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 170 error locations. [2024-01-29 14:21:00,411 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-29 14:21:00,523 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-29 14:21:00,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 379 places, 381 transitions, 776 flow [2024-01-29 14:21:00,688 INFO L124 PetriNetUnfolderBase]: 9/379 cut-off events. [2024-01-29 14:21:00,688 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-29 14:21:00,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 388 conditions, 379 events. 9/379 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1342 event pairs, 0 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 325. Up to 2 conditions per place. [2024-01-29 14:21:00,699 INFO L82 GeneralOperation]: Start removeDead. Operand has 379 places, 381 transitions, 776 flow [2024-01-29 14:21:00,712 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 375 places, 377 transitions, 763 flow [2024-01-29 14:21:00,723 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-29 14:21:00,733 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;@5e61e0ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-29 14:21:00,733 INFO L358 AbstractCegarLoop]: Starting to check reachability of 317 error locations. [2024-01-29 14:21:00,736 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-29 14:21:00,736 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-29 14:21:00,736 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 14:21:00,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:21:00,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-29 14:21:00,737 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 314 more)] === [2024-01-29 14:21:00,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:21:00,741 INFO L85 PathProgramCache]: Analyzing trace with hash 28595, now seen corresponding path program 1 times [2024-01-29 14:21:00,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:21:00,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776931508] [2024-01-29 14:21:00,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:00,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:21:00,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:21:00,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:21:00,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:21:00,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776931508] [2024-01-29 14:21:00,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776931508] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:21:00,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:21:00,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-29 14:21:00,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273197301] [2024-01-29 14:21:00,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:21:00,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:21:00,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:21:00,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:21:00,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:21:01,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 381 [2024-01-29 14:21:01,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 377 transitions, 763 flow. Second operand has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:01,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:21:01,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 381 [2024-01-29 14:21:01,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:21:03,129 INFO L124 PetriNetUnfolderBase]: 5747/18290 cut-off events. [2024-01-29 14:21:03,130 INFO L125 PetriNetUnfolderBase]: For 143/143 co-relation queries the response was YES. [2024-01-29 14:21:03,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27663 conditions, 18290 events. 5747/18290 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 193376 event pairs, 2382 based on Foata normal form. 1302/15174 useless extension candidates. Maximal degree in co-relation 26980. Up to 7938 conditions per place. [2024-01-29 14:21:03,253 INFO L140 encePairwiseOnDemand]: 323/381 looper letters, 129 selfloop transitions, 2 changer transitions 0/401 dead transitions. [2024-01-29 14:21:03,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 401 transitions, 1079 flow [2024-01-29 14:21:03,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:21:03,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:21:03,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1006 transitions. [2024-01-29 14:21:03,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8801399825021873 [2024-01-29 14:21:03,271 INFO L175 Difference]: Start difference. First operand has 375 places, 377 transitions, 763 flow. Second operand 3 states and 1006 transitions. [2024-01-29 14:21:03,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 401 transitions, 1079 flow [2024-01-29 14:21:03,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 401 transitions, 1071 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-29 14:21:03,286 INFO L231 Difference]: Finished difference. Result has 368 places, 368 transitions, 840 flow [2024-01-29 14:21:03,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=840, PETRI_PLACES=368, PETRI_TRANSITIONS=368} [2024-01-29 14:21:03,291 INFO L281 CegarLoopForPetriNet]: 375 programPoint places, -7 predicate places. [2024-01-29 14:21:03,291 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 368 transitions, 840 flow [2024-01-29 14:21:03,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:03,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:21:03,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-01-29 14:21:03,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-29 14:21:03,292 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 314 more)] === [2024-01-29 14:21:03,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:21:03,293 INFO L85 PathProgramCache]: Analyzing trace with hash 887359, now seen corresponding path program 1 times [2024-01-29 14:21:03,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:21:03,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634818985] [2024-01-29 14:21:03,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:03,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:21:03,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:21:03,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:21:03,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:21:03,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634818985] [2024-01-29 14:21:03,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634818985] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:21:03,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:21:03,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-29 14:21:03,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140254365] [2024-01-29 14:21:03,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:21:03,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:21:03,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:21:03,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:21:03,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:21:03,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 381 [2024-01-29 14:21:03,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 368 transitions, 840 flow. Second operand has 3 states, 3 states have (on average 301.6666666666667) internal successors, (905), 3 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:03,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:21:03,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 381 [2024-01-29 14:21:03,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:21:05,580 INFO L124 PetriNetUnfolderBase]: 4782/18555 cut-off events. [2024-01-29 14:21:05,580 INFO L125 PetriNetUnfolderBase]: For 164/172 co-relation queries the response was YES. [2024-01-29 14:21:05,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28678 conditions, 18555 events. 4782/18555 cut-off events. For 164/172 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 202133 event pairs, 2983 based on Foata normal form. 499/14423 useless extension candidates. Maximal degree in co-relation 26357. Up to 4709 conditions per place. [2024-01-29 14:21:05,773 INFO L140 encePairwiseOnDemand]: 354/381 looper letters, 94 selfloop transitions, 3 changer transitions 0/389 dead transitions. [2024-01-29 14:21:05,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 389 transitions, 1081 flow [2024-01-29 14:21:05,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:21:05,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:21:05,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1023 transitions. [2024-01-29 14:21:05,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.89501312335958 [2024-01-29 14:21:05,777 INFO L175 Difference]: Start difference. First operand has 368 places, 368 transitions, 840 flow. Second operand 3 states and 1023 transitions. [2024-01-29 14:21:05,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 389 transitions, 1081 flow [2024-01-29 14:21:05,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 389 transitions, 1079 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-29 14:21:05,824 INFO L231 Difference]: Finished difference. Result has 363 places, 362 transitions, 871 flow [2024-01-29 14:21:05,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=824, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=871, PETRI_PLACES=363, PETRI_TRANSITIONS=362} [2024-01-29 14:21:05,825 INFO L281 CegarLoopForPetriNet]: 375 programPoint places, -12 predicate places. [2024-01-29 14:21:05,826 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 362 transitions, 871 flow [2024-01-29 14:21:05,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 301.6666666666667) internal successors, (905), 3 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:05,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:21:05,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-29 14:21:05,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-29 14:21:05,827 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 314 more)] === [2024-01-29 14:21:05,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:21:05,828 INFO L85 PathProgramCache]: Analyzing trace with hash 27509001, now seen corresponding path program 1 times [2024-01-29 14:21:05,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:21:05,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003706144] [2024-01-29 14:21:05,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:05,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:21:05,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:21:05,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:21:05,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:21:05,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003706144] [2024-01-29 14:21:05,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003706144] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:21:05,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:21:05,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-29 14:21:05,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412583150] [2024-01-29 14:21:05,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:21:05,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:21:05,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:21:05,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:21:05,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:21:06,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 381 [2024-01-29 14:21:06,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 362 transitions, 871 flow. Second operand has 3 states, 3 states have (on average 302.6666666666667) internal successors, (908), 3 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:06,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:21:06,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 381 [2024-01-29 14:21:06,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:21:06,891 INFO L124 PetriNetUnfolderBase]: 2258/10041 cut-off events. [2024-01-29 14:21:06,892 INFO L125 PetriNetUnfolderBase]: For 133/133 co-relation queries the response was YES. [2024-01-29 14:21:06,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14814 conditions, 10041 events. 2258/10041 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 94017 event pairs, 1659 based on Foata normal form. 299/8264 useless extension candidates. Maximal degree in co-relation 12627. Up to 2333 conditions per place. [2024-01-29 14:21:06,937 INFO L140 encePairwiseOnDemand]: 358/381 looper letters, 73 selfloop transitions, 4 changer transitions 0/351 dead transitions. [2024-01-29 14:21:06,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 351 transitions, 980 flow [2024-01-29 14:21:06,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:21:06,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:21:06,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1001 transitions. [2024-01-29 14:21:06,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8757655293088364 [2024-01-29 14:21:06,940 INFO L175 Difference]: Start difference. First operand has 363 places, 362 transitions, 871 flow. Second operand 3 states and 1001 transitions. [2024-01-29 14:21:06,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 351 transitions, 980 flow [2024-01-29 14:21:06,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 351 transitions, 974 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:21:06,950 INFO L231 Difference]: Finished difference. Result has 338 places, 335 transitions, 807 flow [2024-01-29 14:21:06,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=785, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=807, PETRI_PLACES=338, PETRI_TRANSITIONS=335} [2024-01-29 14:21:06,951 INFO L281 CegarLoopForPetriNet]: 375 programPoint places, -37 predicate places. [2024-01-29 14:21:06,951 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 335 transitions, 807 flow [2024-01-29 14:21:06,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 302.6666666666667) internal successors, (908), 3 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:06,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:21:06,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:21:06,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-29 14:21:06,952 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 314 more)] === [2024-01-29 14:21:06,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:21:06,953 INFO L85 PathProgramCache]: Analyzing trace with hash 677953811, now seen corresponding path program 1 times [2024-01-29 14:21:06,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:21:06,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865273037] [2024-01-29 14:21:06,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:06,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:21:06,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:21:07,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:21:07,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:21:07,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865273037] [2024-01-29 14:21:07,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865273037] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:21:07,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:21:07,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-29 14:21:07,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208035976] [2024-01-29 14:21:07,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:21:07,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:21:07,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:21:07,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:21:07,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:21:07,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 381 [2024-01-29 14:21:07,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 335 transitions, 807 flow. Second operand has 3 states, 3 states have (on average 323.3333333333333) internal successors, (970), 3 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:07,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:21:07,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 381 [2024-01-29 14:21:07,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:21:07,576 INFO L124 PetriNetUnfolderBase]: 1552/7628 cut-off events. [2024-01-29 14:21:07,576 INFO L125 PetriNetUnfolderBase]: For 171/171 co-relation queries the response was YES. [2024-01-29 14:21:07,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11289 conditions, 7628 events. 1552/7628 cut-off events. For 171/171 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 68706 event pairs, 1289 based on Foata normal form. 0/5827 useless extension candidates. Maximal degree in co-relation 9187. Up to 1862 conditions per place. [2024-01-29 14:21:07,615 INFO L140 encePairwiseOnDemand]: 375/381 looper letters, 49 selfloop transitions, 2 changer transitions 0/331 dead transitions. [2024-01-29 14:21:07,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 331 transitions, 901 flow [2024-01-29 14:21:07,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:21:07,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:21:07,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1020 transitions. [2024-01-29 14:21:07,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8923884514435696 [2024-01-29 14:21:07,618 INFO L175 Difference]: Start difference. First operand has 338 places, 335 transitions, 807 flow. Second operand 3 states and 1020 transitions. [2024-01-29 14:21:07,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 331 transitions, 901 flow [2024-01-29 14:21:07,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 331 transitions, 893 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:21:07,628 INFO L231 Difference]: Finished difference. Result has 334 places, 331 transitions, 795 flow [2024-01-29 14:21:07,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=795, PETRI_PLACES=334, PETRI_TRANSITIONS=331} [2024-01-29 14:21:07,629 INFO L281 CegarLoopForPetriNet]: 375 programPoint places, -41 predicate places. [2024-01-29 14:21:07,629 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 331 transitions, 795 flow [2024-01-29 14:21:07,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 323.3333333333333) internal successors, (970), 3 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:07,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:21:07,630 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] [2024-01-29 14:21:07,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-29 14:21:07,631 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 314 more)] === [2024-01-29 14:21:07,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:21:07,631 INFO L85 PathProgramCache]: Analyzing trace with hash 834125984, now seen corresponding path program 1 times [2024-01-29 14:21:07,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:21:07,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061265015] [2024-01-29 14:21:07,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:07,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:21:07,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:21:07,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:21:07,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:21:07,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061265015] [2024-01-29 14:21:07,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061265015] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:21:07,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:21:07,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-29 14:21:07,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555580721] [2024-01-29 14:21:07,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:21:07,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:21:07,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:21:07,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:21:07,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:21:07,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 381 [2024-01-29 14:21:07,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 331 transitions, 795 flow. Second operand has 3 states, 3 states have (on average 304.3333333333333) internal successors, (913), 3 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:07,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:21:07,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 381 [2024-01-29 14:21:07,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:21:08,340 INFO L124 PetriNetUnfolderBase]: 1507/6505 cut-off events. [2024-01-29 14:21:08,341 INFO L125 PetriNetUnfolderBase]: For 249/254 co-relation queries the response was YES. [2024-01-29 14:21:08,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9834 conditions, 6505 events. 1507/6505 cut-off events. For 249/254 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 54966 event pairs, 967 based on Foata normal form. 297/5291 useless extension candidates. Maximal degree in co-relation 9801. Up to 1337 conditions per place. [2024-01-29 14:21:08,375 INFO L140 encePairwiseOnDemand]: 361/381 looper letters, 66 selfloop transitions, 3 changer transitions 0/332 dead transitions. [2024-01-29 14:21:08,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 332 transitions, 932 flow [2024-01-29 14:21:08,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:21:08,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:21:08,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 988 transitions. [2024-01-29 14:21:08,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8643919510061242 [2024-01-29 14:21:08,378 INFO L175 Difference]: Start difference. First operand has 334 places, 331 transitions, 795 flow. Second operand 3 states and 988 transitions. [2024-01-29 14:21:08,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 332 transitions, 932 flow [2024-01-29 14:21:08,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 332 transitions, 928 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:21:08,386 INFO L231 Difference]: Finished difference. Result has 320 places, 316 transitions, 768 flow [2024-01-29 14:21:08,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=755, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=768, PETRI_PLACES=320, PETRI_TRANSITIONS=316} [2024-01-29 14:21:08,387 INFO L281 CegarLoopForPetriNet]: 375 programPoint places, -55 predicate places. [2024-01-29 14:21:08,388 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 316 transitions, 768 flow [2024-01-29 14:21:08,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 304.3333333333333) internal successors, (913), 3 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:08,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:21:08,388 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:21:08,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-29 14:21:08,389 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 314 more)] === [2024-01-29 14:21:08,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:21:08,389 INFO L85 PathProgramCache]: Analyzing trace with hash 310727094, now seen corresponding path program 1 times [2024-01-29 14:21:08,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:21:08,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211392667] [2024-01-29 14:21:08,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:08,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:21:08,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:21:08,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:21:08,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:21:08,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211392667] [2024-01-29 14:21:08,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211392667] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:21:08,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:21:08,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:21:08,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309850075] [2024-01-29 14:21:08,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:21:08,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:21:08,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:21:08,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:21:08,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:21:08,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 381 [2024-01-29 14:21:08,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 316 transitions, 768 flow. Second operand has 4 states, 4 states have (on average 321.75) internal successors, (1287), 4 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:08,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:21:08,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 381 [2024-01-29 14:21:08,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:21:09,052 INFO L124 PetriNetUnfolderBase]: 1436/6678 cut-off events. [2024-01-29 14:21:09,052 INFO L125 PetriNetUnfolderBase]: For 185/185 co-relation queries the response was YES. [2024-01-29 14:21:09,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10008 conditions, 6678 events. 1436/6678 cut-off events. For 185/185 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 57161 event pairs, 812 based on Foata normal form. 394/5752 useless extension candidates. Maximal degree in co-relation 9491. Up to 1655 conditions per place. [2024-01-29 14:21:09,071 INFO L140 encePairwiseOnDemand]: 368/381 looper letters, 54 selfloop transitions, 2 changer transitions 0/314 dead transitions. [2024-01-29 14:21:09,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 314 transitions, 878 flow [2024-01-29 14:21:09,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:21:09,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:21:09,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1342 transitions. [2024-01-29 14:21:09,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8805774278215223 [2024-01-29 14:21:09,090 INFO L175 Difference]: Start difference. First operand has 320 places, 316 transitions, 768 flow. Second operand 4 states and 1342 transitions. [2024-01-29 14:21:09,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 314 transitions, 878 flow [2024-01-29 14:21:09,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 314 transitions, 872 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:21:09,099 INFO L231 Difference]: Finished difference. Result has 310 places, 305 transitions, 744 flow [2024-01-29 14:21:09,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=744, PETRI_PLACES=310, PETRI_TRANSITIONS=305} [2024-01-29 14:21:09,102 INFO L281 CegarLoopForPetriNet]: 375 programPoint places, -65 predicate places. [2024-01-29 14:21:09,102 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 305 transitions, 744 flow [2024-01-29 14:21:09,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 321.75) internal successors, (1287), 4 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:09,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:21:09,103 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:21:09,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-29 14:21:09,105 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 314 more)] === [2024-01-29 14:21:09,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:21:09,105 INFO L85 PathProgramCache]: Analyzing trace with hash -2047651480, now seen corresponding path program 1 times [2024-01-29 14:21:09,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:21:09,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286381675] [2024-01-29 14:21:09,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:09,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:21:09,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:21:09,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:21:09,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:21:09,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286381675] [2024-01-29 14:21:09,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286381675] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:21:09,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:21:09,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:21:09,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761355172] [2024-01-29 14:21:09,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:21:09,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:21:09,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:21:09,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:21:09,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:21:09,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 320 out of 381 [2024-01-29 14:21:09,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 305 transitions, 744 flow. Second operand has 4 states, 4 states have (on average 323.25) internal successors, (1293), 4 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:09,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:21:09,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 320 of 381 [2024-01-29 14:21:09,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:21:09,684 INFO L124 PetriNetUnfolderBase]: 1311/5809 cut-off events. [2024-01-29 14:21:09,684 INFO L125 PetriNetUnfolderBase]: For 131/131 co-relation queries the response was YES. [2024-01-29 14:21:09,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8847 conditions, 5809 events. 1311/5809 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 48268 event pairs, 469 based on Foata normal form. 404/5178 useless extension candidates. Maximal degree in co-relation 8450. Up to 1366 conditions per place. [2024-01-29 14:21:09,707 INFO L140 encePairwiseOnDemand]: 369/381 looper letters, 82 selfloop transitions, 2 changer transitions 0/332 dead transitions. [2024-01-29 14:21:09,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 332 transitions, 981 flow [2024-01-29 14:21:09,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:21:09,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:21:09,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1373 transitions. [2024-01-29 14:21:09,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9009186351706037 [2024-01-29 14:21:09,710 INFO L175 Difference]: Start difference. First operand has 310 places, 305 transitions, 744 flow. Second operand 4 states and 1373 transitions. [2024-01-29 14:21:09,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 332 transitions, 981 flow [2024-01-29 14:21:09,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 332 transitions, 976 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:21:09,720 INFO L231 Difference]: Finished difference. Result has 301 places, 295 transitions, 725 flow [2024-01-29 14:21:09,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=725, PETRI_PLACES=301, PETRI_TRANSITIONS=295} [2024-01-29 14:21:09,721 INFO L281 CegarLoopForPetriNet]: 375 programPoint places, -74 predicate places. [2024-01-29 14:21:09,721 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 295 transitions, 725 flow [2024-01-29 14:21:09,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 323.25) internal successors, (1293), 4 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:09,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:21:09,722 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:21:09,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-29 14:21:09,723 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 314 more)] === [2024-01-29 14:21:09,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:21:09,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1217403042, now seen corresponding path program 1 times [2024-01-29 14:21:09,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:21:09,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201119922] [2024-01-29 14:21:09,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:09,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:21:09,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:21:09,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:21:09,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:21:09,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201119922] [2024-01-29 14:21:09,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201119922] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:21:09,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:21:09,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-29 14:21:09,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435171341] [2024-01-29 14:21:09,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:21:09,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:21:09,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:21:09,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:21:09,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:21:09,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 381 [2024-01-29 14:21:09,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 295 transitions, 725 flow. Second operand has 3 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:09,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:21:09,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 381 [2024-01-29 14:21:09,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:21:10,310 INFO L124 PetriNetUnfolderBase]: 1823/7160 cut-off events. [2024-01-29 14:21:10,310 INFO L125 PetriNetUnfolderBase]: For 186/199 co-relation queries the response was YES. [2024-01-29 14:21:10,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11201 conditions, 7160 events. 1823/7160 cut-off events. For 186/199 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 58242 event pairs, 1050 based on Foata normal form. 132/5975 useless extension candidates. Maximal degree in co-relation 9721. Up to 1537 conditions per place. [2024-01-29 14:21:10,342 INFO L140 encePairwiseOnDemand]: 372/381 looper letters, 82 selfloop transitions, 2 changer transitions 0/326 dead transitions. [2024-01-29 14:21:10,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 326 transitions, 967 flow [2024-01-29 14:21:10,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:21:10,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:21:10,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1063 transitions. [2024-01-29 14:21:10,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9300087489063867 [2024-01-29 14:21:10,345 INFO L175 Difference]: Start difference. First operand has 301 places, 295 transitions, 725 flow. Second operand 3 states and 1063 transitions. [2024-01-29 14:21:10,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 326 transitions, 967 flow [2024-01-29 14:21:10,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 326 transitions, 961 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:21:10,350 INFO L231 Difference]: Finished difference. Result has 302 places, 296 transitions, 746 flow [2024-01-29 14:21:10,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=746, PETRI_PLACES=302, PETRI_TRANSITIONS=296} [2024-01-29 14:21:10,351 INFO L281 CegarLoopForPetriNet]: 375 programPoint places, -73 predicate places. [2024-01-29 14:21:10,351 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 296 transitions, 746 flow [2024-01-29 14:21:10,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:10,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:21:10,352 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:21:10,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-29 14:21:10,352 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 314 more)] === [2024-01-29 14:21:10,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:21:10,353 INFO L85 PathProgramCache]: Analyzing trace with hash -698010517, now seen corresponding path program 1 times [2024-01-29 14:21:10,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:21:10,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767648693] [2024-01-29 14:21:10,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:10,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:21:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:21:10,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:21:10,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:21:10,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767648693] [2024-01-29 14:21:10,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767648693] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:21:10,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:21:10,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-29 14:21:10,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139520508] [2024-01-29 14:21:10,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:21:10,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:21:10,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:21:10,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:21:10,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:21:10,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 381 [2024-01-29 14:21:10,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 296 transitions, 746 flow. Second operand has 3 states, 3 states have (on average 326.3333333333333) internal successors, (979), 3 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:10,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:21:10,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 381 [2024-01-29 14:21:10,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:21:11,724 INFO L124 PetriNetUnfolderBase]: 3281/13982 cut-off events. [2024-01-29 14:21:11,724 INFO L125 PetriNetUnfolderBase]: For 545/591 co-relation queries the response was YES. [2024-01-29 14:21:11,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22413 conditions, 13982 events. 3281/13982 cut-off events. For 545/591 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 146506 event pairs, 2258 based on Foata normal form. 266/12382 useless extension candidates. Maximal degree in co-relation 22113. Up to 3617 conditions per place. [2024-01-29 14:21:11,800 INFO L140 encePairwiseOnDemand]: 371/381 looper letters, 88 selfloop transitions, 2 changer transitions 0/330 dead transitions. [2024-01-29 14:21:11,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 330 transitions, 1016 flow [2024-01-29 14:21:11,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:21:11,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:21:11,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1060 transitions. [2024-01-29 14:21:11,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9273840769903762 [2024-01-29 14:21:11,802 INFO L175 Difference]: Start difference. First operand has 302 places, 296 transitions, 746 flow. Second operand 3 states and 1060 transitions. [2024-01-29 14:21:11,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 330 transitions, 1016 flow [2024-01-29 14:21:11,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 330 transitions, 1012 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-29 14:21:11,817 INFO L231 Difference]: Finished difference. Result has 304 places, 297 transitions, 770 flow [2024-01-29 14:21:11,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=744, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=770, PETRI_PLACES=304, PETRI_TRANSITIONS=297} [2024-01-29 14:21:11,818 INFO L281 CegarLoopForPetriNet]: 375 programPoint places, -71 predicate places. [2024-01-29 14:21:11,818 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 297 transitions, 770 flow [2024-01-29 14:21:11,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 326.3333333333333) internal successors, (979), 3 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:11,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:21:11,819 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:21:11,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-29 14:21:11,819 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err17ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 314 more)] === [2024-01-29 14:21:11,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:21:11,819 INFO L85 PathProgramCache]: Analyzing trace with hash -296912197, now seen corresponding path program 1 times [2024-01-29 14:21:11,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:21:11,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837271605] [2024-01-29 14:21:11,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:11,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:21:11,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:21:11,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:21:11,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:21:11,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837271605] [2024-01-29 14:21:11,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837271605] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:21:11,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:21:11,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:21:11,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843355175] [2024-01-29 14:21:11,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:21:11,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:21:11,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:21:11,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:21:11,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:21:12,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 381 [2024-01-29 14:21:12,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 297 transitions, 770 flow. Second operand has 4 states, 4 states have (on average 315.25) internal successors, (1261), 4 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:12,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:21:12,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 381 [2024-01-29 14:21:12,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:21:13,189 INFO L124 PetriNetUnfolderBase]: 3014/11681 cut-off events. [2024-01-29 14:21:13,190 INFO L125 PetriNetUnfolderBase]: For 1086/1197 co-relation queries the response was YES. [2024-01-29 14:21:13,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19750 conditions, 11681 events. 3014/11681 cut-off events. For 1086/1197 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 112511 event pairs, 1898 based on Foata normal form. 200/10429 useless extension candidates. Maximal degree in co-relation 16656. Up to 2699 conditions per place. [2024-01-29 14:21:13,248 INFO L140 encePairwiseOnDemand]: 365/381 looper letters, 104 selfloop transitions, 4 changer transitions 0/338 dead transitions. [2024-01-29 14:21:13,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 338 transitions, 1100 flow [2024-01-29 14:21:13,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:21:13,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:21:13,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1365 transitions. [2024-01-29 14:21:13,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8956692913385826 [2024-01-29 14:21:13,251 INFO L175 Difference]: Start difference. First operand has 304 places, 297 transitions, 770 flow. Second operand 4 states and 1365 transitions. [2024-01-29 14:21:13,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 338 transitions, 1100 flow [2024-01-29 14:21:13,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 338 transitions, 1094 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-29 14:21:13,260 INFO L231 Difference]: Finished difference. Result has 308 places, 299 transitions, 814 flow [2024-01-29 14:21:13,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=814, PETRI_PLACES=308, PETRI_TRANSITIONS=299} [2024-01-29 14:21:13,261 INFO L281 CegarLoopForPetriNet]: 375 programPoint places, -67 predicate places. [2024-01-29 14:21:13,261 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 299 transitions, 814 flow [2024-01-29 14:21:13,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 315.25) internal successors, (1261), 4 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:13,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:21:13,262 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:21:13,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-29 14:21:13,262 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 314 more)] === [2024-01-29 14:21:13,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:21:13,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1059459135, now seen corresponding path program 1 times [2024-01-29 14:21:13,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:21:13,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681910161] [2024-01-29 14:21:13,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:13,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:21:13,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:21:13,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:21:13,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:21:13,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681910161] [2024-01-29 14:21:13,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681910161] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 14:21:13,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985848075] [2024-01-29 14:21:13,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:13,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:21:13,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:21:13,359 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) [2024-01-29 14:21:13,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-29 14:21:13,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:21:13,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-29 14:21:13,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 14:21:13,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:21:13,533 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 14:21:13,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:21:13,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985848075] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 14:21:13,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-29 14:21:13,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 5 [2024-01-29 14:21:13,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795138374] [2024-01-29 14:21:13,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-29 14:21:13,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-29 14:21:13,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:21:13,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-29 14:21:13,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-01-29 14:21:13,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 381 [2024-01-29 14:21:13,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 299 transitions, 814 flow. Second operand has 6 states, 6 states have (on average 319.0) internal successors, (1914), 6 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:13,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:21:13,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 381 [2024-01-29 14:21:13,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:21:15,570 INFO L124 PetriNetUnfolderBase]: 5718/18744 cut-off events. [2024-01-29 14:21:15,570 INFO L125 PetriNetUnfolderBase]: For 2727/2987 co-relation queries the response was YES. [2024-01-29 14:21:15,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32986 conditions, 18744 events. 5718/18744 cut-off events. For 2727/2987 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 191518 event pairs, 1508 based on Foata normal form. 860/17305 useless extension candidates. Maximal degree in co-relation 32190. Up to 5197 conditions per place. [2024-01-29 14:21:15,662 INFO L140 encePairwiseOnDemand]: 370/381 looper letters, 185 selfloop transitions, 5 changer transitions 0/423 dead transitions. [2024-01-29 14:21:15,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 423 transitions, 1570 flow [2024-01-29 14:21:15,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-29 14:21:15,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-29 14:21:15,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2079 transitions. [2024-01-29 14:21:15,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9094488188976378 [2024-01-29 14:21:15,665 INFO L175 Difference]: Start difference. First operand has 308 places, 299 transitions, 814 flow. Second operand 6 states and 2079 transitions. [2024-01-29 14:21:15,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 423 transitions, 1570 flow [2024-01-29 14:21:15,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 423 transitions, 1550 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:21:15,686 INFO L231 Difference]: Finished difference. Result has 307 places, 294 transitions, 811 flow [2024-01-29 14:21:15,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=782, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=811, PETRI_PLACES=307, PETRI_TRANSITIONS=294} [2024-01-29 14:21:15,687 INFO L281 CegarLoopForPetriNet]: 375 programPoint places, -68 predicate places. [2024-01-29 14:21:15,687 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 294 transitions, 811 flow [2024-01-29 14:21:15,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 319.0) internal successors, (1914), 6 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:15,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:21:15,688 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:21:15,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-01-29 14:21:15,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-01-29 14:21:15,900 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err52ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 314 more)] === [2024-01-29 14:21:15,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:21:15,900 INFO L85 PathProgramCache]: Analyzing trace with hash 186884749, now seen corresponding path program 1 times [2024-01-29 14:21:15,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:21:15,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204047977] [2024-01-29 14:21:15,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:15,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:21:15,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:21:16,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:21:16,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:21:16,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204047977] [2024-01-29 14:21:16,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204047977] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:21:16,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:21:16,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-29 14:21:16,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064115338] [2024-01-29 14:21:16,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:21:16,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-29 14:21:16,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:21:16,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-29 14:21:16,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-29 14:21:16,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 381 [2024-01-29 14:21:16,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 294 transitions, 811 flow. Second operand has 5 states, 5 states have (on average 323.0) internal successors, (1615), 5 states have internal predecessors, (1615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:16,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:21:16,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 381 [2024-01-29 14:21:16,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:21:17,979 INFO L124 PetriNetUnfolderBase]: 3979/17827 cut-off events. [2024-01-29 14:21:17,979 INFO L125 PetriNetUnfolderBase]: For 2827/2901 co-relation queries the response was YES. [2024-01-29 14:21:18,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30068 conditions, 17827 events. 3979/17827 cut-off events. For 2827/2901 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 194422 event pairs, 2324 based on Foata normal form. 24/15754 useless extension candidates. Maximal degree in co-relation 29476. Up to 5039 conditions per place. [2024-01-29 14:21:18,126 INFO L140 encePairwiseOnDemand]: 376/381 looper letters, 69 selfloop transitions, 4 changer transitions 0/308 dead transitions. [2024-01-29 14:21:18,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 308 transitions, 1015 flow [2024-01-29 14:21:18,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-29 14:21:18,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-29 14:21:18,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1981 transitions. [2024-01-29 14:21:18,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8665791776027997 [2024-01-29 14:21:18,129 INFO L175 Difference]: Start difference. First operand has 307 places, 294 transitions, 811 flow. Second operand 6 states and 1981 transitions. [2024-01-29 14:21:18,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 308 transitions, 1015 flow [2024-01-29 14:21:18,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 308 transitions, 997 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-01-29 14:21:18,151 INFO L231 Difference]: Finished difference. Result has 311 places, 295 transitions, 816 flow [2024-01-29 14:21:18,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=816, PETRI_PLACES=311, PETRI_TRANSITIONS=295} [2024-01-29 14:21:18,153 INFO L281 CegarLoopForPetriNet]: 375 programPoint places, -64 predicate places. [2024-01-29 14:21:18,153 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 295 transitions, 816 flow [2024-01-29 14:21:18,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 323.0) internal successors, (1615), 5 states have internal predecessors, (1615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:18,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:21:18,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:21:18,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-29 14:21:18,154 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err39ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 314 more)] === [2024-01-29 14:21:18,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:21:18,154 INFO L85 PathProgramCache]: Analyzing trace with hash 570002793, now seen corresponding path program 1 times [2024-01-29 14:21:18,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:21:18,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630943803] [2024-01-29 14:21:18,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:18,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:21:18,169 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-01-29 14:21:18,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1396079923] [2024-01-29 14:21:18,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:18,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:21:18,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:21:18,170 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 14:21:18,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-29 14:21:18,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:21:18,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 4 conjunts are in the unsatisfiable core [2024-01-29 14:21:18,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 14:21:21,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:21:21,524 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-29 14:21:21,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:21:21,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630943803] [2024-01-29 14:21:21,524 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-01-29 14:21:21,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396079923] [2024-01-29 14:21:21,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396079923] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:21:21,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:21:21,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-29 14:21:21,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512609982] [2024-01-29 14:21:21,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:21:21,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:21:21,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:21:21,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:21:21,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:21:21,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 381 [2024-01-29 14:21:21,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 295 transitions, 816 flow. Second operand has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:21,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:21:21,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 381 [2024-01-29 14:21:21,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:21:23,538 INFO L124 PetriNetUnfolderBase]: 3938/17868 cut-off events. [2024-01-29 14:21:23,538 INFO L125 PetriNetUnfolderBase]: For 2108/2176 co-relation queries the response was YES. [2024-01-29 14:21:23,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29853 conditions, 17868 events. 3938/17868 cut-off events. For 2108/2176 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 195158 event pairs, 2243 based on Foata normal form. 0/15689 useless extension candidates. Maximal degree in co-relation 29264. Up to 5039 conditions per place. [2024-01-29 14:21:23,671 INFO L140 encePairwiseOnDemand]: 378/381 looper letters, 78 selfloop transitions, 2 changer transitions 0/318 dead transitions. [2024-01-29 14:21:23,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 318 transitions, 1068 flow [2024-01-29 14:21:23,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:21:23,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:21:23,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1380 transitions. [2024-01-29 14:21:23,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.905511811023622 [2024-01-29 14:21:23,674 INFO L175 Difference]: Start difference. First operand has 311 places, 295 transitions, 816 flow. Second operand 4 states and 1380 transitions. [2024-01-29 14:21:23,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 318 transitions, 1068 flow [2024-01-29 14:21:23,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 318 transitions, 1063 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-29 14:21:23,693 INFO L231 Difference]: Finished difference. Result has 310 places, 294 transitions, 816 flow [2024-01-29 14:21:23,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=816, PETRI_PLACES=310, PETRI_TRANSITIONS=294} [2024-01-29 14:21:23,694 INFO L281 CegarLoopForPetriNet]: 375 programPoint places, -65 predicate places. [2024-01-29 14:21:23,694 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 294 transitions, 816 flow [2024-01-29 14:21:23,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:23,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:21:23,695 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:21:23,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-01-29 14:21:23,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-01-29 14:21:23,906 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err52ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 314 more)] === [2024-01-29 14:21:23,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:21:23,907 INFO L85 PathProgramCache]: Analyzing trace with hash -517268276, now seen corresponding path program 1 times [2024-01-29 14:21:23,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:21:23,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214418809] [2024-01-29 14:21:23,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:23,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:21:23,921 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-01-29 14:21:23,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1156246248] [2024-01-29 14:21:23,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:23,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:21:23,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:21:23,944 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 14:21:23,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-01-29 14:21:24,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:21:24,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 9 conjunts are in the unsatisfiable core [2024-01-29 14:21:24,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 14:21:24,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:21:24,264 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-29 14:21:24,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:21:24,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214418809] [2024-01-29 14:21:24,264 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-01-29 14:21:24,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156246248] [2024-01-29 14:21:24,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156246248] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:21:24,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:21:24,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-29 14:21:24,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050387673] [2024-01-29 14:21:24,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:21:24,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-29 14:21:24,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:21:24,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-29 14:21:24,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-01-29 14:21:24,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 381 [2024-01-29 14:21:24,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 294 transitions, 816 flow. Second operand has 7 states, 7 states have (on average 311.0) internal successors, (2177), 7 states have internal predecessors, (2177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:24,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:21:24,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 381 [2024-01-29 14:21:24,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:21:26,464 INFO L124 PetriNetUnfolderBase]: 4696/16353 cut-off events. [2024-01-29 14:21:26,464 INFO L125 PetriNetUnfolderBase]: For 3600/3639 co-relation queries the response was YES. [2024-01-29 14:21:26,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29767 conditions, 16353 events. 4696/16353 cut-off events. For 3600/3639 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 159889 event pairs, 2973 based on Foata normal form. 0/14268 useless extension candidates. Maximal degree in co-relation 28930. Up to 4482 conditions per place. [2024-01-29 14:21:26,593 INFO L140 encePairwiseOnDemand]: 373/381 looper letters, 154 selfloop transitions, 7 changer transitions 0/380 dead transitions. [2024-01-29 14:21:26,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 380 transitions, 1454 flow [2024-01-29 14:21:26,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-29 14:21:26,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-29 14:21:26,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2612 transitions. [2024-01-29 14:21:26,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8569553805774278 [2024-01-29 14:21:26,596 INFO L175 Difference]: Start difference. First operand has 310 places, 294 transitions, 816 flow. Second operand 8 states and 2612 transitions. [2024-01-29 14:21:26,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 380 transitions, 1454 flow [2024-01-29 14:21:26,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 380 transitions, 1452 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-29 14:21:26,611 INFO L231 Difference]: Finished difference. Result has 319 places, 297 transitions, 848 flow [2024-01-29 14:21:26,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=814, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=848, PETRI_PLACES=319, PETRI_TRANSITIONS=297} [2024-01-29 14:21:26,612 INFO L281 CegarLoopForPetriNet]: 375 programPoint places, -56 predicate places. [2024-01-29 14:21:26,612 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 297 transitions, 848 flow [2024-01-29 14:21:26,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 311.0) internal successors, (2177), 7 states have internal predecessors, (2177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:26,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:21:26,613 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:21:26,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-01-29 14:21:26,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:21:26,825 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err65ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 314 more)] === [2024-01-29 14:21:26,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:21:26,825 INFO L85 PathProgramCache]: Analyzing trace with hash -601891709, now seen corresponding path program 1 times [2024-01-29 14:21:26,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:21:26,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845544049] [2024-01-29 14:21:26,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:26,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:21:26,840 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-01-29 14:21:26,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [652635027] [2024-01-29 14:21:26,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:26,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:21:26,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:21:26,856 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 14:21:26,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-01-29 14:21:26,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:21:26,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-29 14:21:26,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 14:21:27,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:21:27,041 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-29 14:21:27,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:21:27,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845544049] [2024-01-29 14:21:27,041 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-01-29 14:21:27,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652635027] [2024-01-29 14:21:27,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652635027] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:21:27,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:21:27,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:21:27,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430987365] [2024-01-29 14:21:27,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:21:27,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:21:27,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:21:27,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:21:27,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:21:27,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 381 [2024-01-29 14:21:27,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 297 transitions, 848 flow. Second operand has 4 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:27,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:21:27,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 381 [2024-01-29 14:21:27,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:21:29,995 INFO L124 PetriNetUnfolderBase]: 9072/23935 cut-off events. [2024-01-29 14:21:29,995 INFO L125 PetriNetUnfolderBase]: For 10222/12859 co-relation queries the response was YES. [2024-01-29 14:21:30,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50170 conditions, 23935 events. 9072/23935 cut-off events. For 10222/12859 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 232187 event pairs, 6669 based on Foata normal form. 764/22343 useless extension candidates. Maximal degree in co-relation 49169. Up to 13619 conditions per place. [2024-01-29 14:21:30,249 INFO L140 encePairwiseOnDemand]: 350/381 looper letters, 151 selfloop transitions, 3 changer transitions 0/335 dead transitions. [2024-01-29 14:21:30,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 335 transitions, 1284 flow [2024-01-29 14:21:30,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:21:30,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:21:30,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1224 transitions. [2024-01-29 14:21:30,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8031496062992126 [2024-01-29 14:21:30,252 INFO L175 Difference]: Start difference. First operand has 319 places, 297 transitions, 848 flow. Second operand 4 states and 1224 transitions. [2024-01-29 14:21:30,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 335 transitions, 1284 flow [2024-01-29 14:21:30,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 335 transitions, 1276 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-29 14:21:30,288 INFO L231 Difference]: Finished difference. Result has 320 places, 297 transitions, 904 flow [2024-01-29 14:21:30,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=840, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=904, PETRI_PLACES=320, PETRI_TRANSITIONS=297} [2024-01-29 14:21:30,289 INFO L281 CegarLoopForPetriNet]: 375 programPoint places, -55 predicate places. [2024-01-29 14:21:30,289 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 297 transitions, 904 flow [2024-01-29 14:21:30,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:30,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:21:30,290 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:21:30,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-01-29 14:21:30,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-01-29 14:21:30,503 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err61ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 314 more)] === [2024-01-29 14:21:30,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:21:30,503 INFO L85 PathProgramCache]: Analyzing trace with hash -260377054, now seen corresponding path program 1 times [2024-01-29 14:21:30,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:21:30,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562545460] [2024-01-29 14:21:30,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:30,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:21:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:21:30,604 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-01-29 14:21:30,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:21:30,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562545460] [2024-01-29 14:21:30,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562545460] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:21:30,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:21:30,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-29 14:21:30,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719722027] [2024-01-29 14:21:30,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:21:30,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-29 14:21:30,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:21:30,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-29 14:21:30,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-01-29 14:21:30,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 381 [2024-01-29 14:21:30,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 297 transitions, 904 flow. Second operand has 5 states, 5 states have (on average 326.6) internal successors, (1633), 5 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:30,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:21:30,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 381 [2024-01-29 14:21:30,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:21:32,623 INFO L124 PetriNetUnfolderBase]: 5358/17844 cut-off events. [2024-01-29 14:21:32,623 INFO L125 PetriNetUnfolderBase]: For 6782/9096 co-relation queries the response was YES. [2024-01-29 14:21:32,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35945 conditions, 17844 events. 5358/17844 cut-off events. For 6782/9096 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 177959 event pairs, 1479 based on Foata normal form. 0/15883 useless extension candidates. Maximal degree in co-relation 35128. Up to 5065 conditions per place. [2024-01-29 14:21:32,729 INFO L140 encePairwiseOnDemand]: 376/381 looper letters, 128 selfloop transitions, 7 changer transitions 3/370 dead transitions. [2024-01-29 14:21:32,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 370 transitions, 1491 flow [2024-01-29 14:21:32,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-29 14:21:32,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-29 14:21:32,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1719 transitions. [2024-01-29 14:21:32,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9023622047244094 [2024-01-29 14:21:32,732 INFO L175 Difference]: Start difference. First operand has 320 places, 297 transitions, 904 flow. Second operand 5 states and 1719 transitions. [2024-01-29 14:21:32,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 370 transitions, 1491 flow [2024-01-29 14:21:32,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 370 transitions, 1470 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-29 14:21:32,782 INFO L231 Difference]: Finished difference. Result has 321 places, 297 transitions, 922 flow [2024-01-29 14:21:32,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=896, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=922, PETRI_PLACES=321, PETRI_TRANSITIONS=297} [2024-01-29 14:21:32,782 INFO L281 CegarLoopForPetriNet]: 375 programPoint places, -54 predicate places. [2024-01-29 14:21:32,783 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 297 transitions, 922 flow [2024-01-29 14:21:32,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 326.6) internal successors, (1633), 5 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:32,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:21:32,783 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:21:32,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-01-29 14:21:32,784 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err78ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 314 more)] === [2024-01-29 14:21:32,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:21:32,784 INFO L85 PathProgramCache]: Analyzing trace with hash -646679837, now seen corresponding path program 1 times [2024-01-29 14:21:32,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:21:32,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231207835] [2024-01-29 14:21:32,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:32,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:21:32,797 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-01-29 14:21:32,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [654821046] [2024-01-29 14:21:32,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:32,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:21:32,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:21:32,798 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 14:21:32,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-01-29 14:21:32,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:21:32,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 7 conjunts are in the unsatisfiable core [2024-01-29 14:21:32,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 14:21:32,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:21:32,929 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-29 14:21:32,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:21:32,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231207835] [2024-01-29 14:21:32,929 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-01-29 14:21:32,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654821046] [2024-01-29 14:21:32,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654821046] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:21:32,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:21:32,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:21:32,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290071648] [2024-01-29 14:21:32,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:21:32,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:21:32,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:21:32,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:21:32,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:21:33,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 381 [2024-01-29 14:21:33,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 297 transitions, 922 flow. Second operand has 4 states, 4 states have (on average 280.75) internal successors, (1123), 4 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:33,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:21:33,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 381 [2024-01-29 14:21:33,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:21:34,907 INFO L124 PetriNetUnfolderBase]: 4129/15024 cut-off events. [2024-01-29 14:21:34,907 INFO L125 PetriNetUnfolderBase]: For 7260/8732 co-relation queries the response was YES. [2024-01-29 14:21:35,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30167 conditions, 15024 events. 4129/15024 cut-off events. For 7260/8732 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 149529 event pairs, 2565 based on Foata normal form. 720/14292 useless extension candidates. Maximal degree in co-relation 29426. Up to 3445 conditions per place. [2024-01-29 14:21:35,054 INFO L140 encePairwiseOnDemand]: 364/381 looper letters, 105 selfloop transitions, 5 changer transitions 0/329 dead transitions. [2024-01-29 14:21:35,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 329 transitions, 1296 flow [2024-01-29 14:21:35,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:21:35,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:21:35,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1199 transitions. [2024-01-29 14:21:35,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.786745406824147 [2024-01-29 14:21:35,057 INFO L175 Difference]: Start difference. First operand has 321 places, 297 transitions, 922 flow. Second operand 4 states and 1199 transitions. [2024-01-29 14:21:35,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 329 transitions, 1296 flow [2024-01-29 14:21:35,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 329 transitions, 1267 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-01-29 14:21:35,073 INFO L231 Difference]: Finished difference. Result has 312 places, 287 transitions, 901 flow [2024-01-29 14:21:35,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=885, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=901, PETRI_PLACES=312, PETRI_TRANSITIONS=287} [2024-01-29 14:21:35,074 INFO L281 CegarLoopForPetriNet]: 375 programPoint places, -63 predicate places. [2024-01-29 14:21:35,074 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 287 transitions, 901 flow [2024-01-29 14:21:35,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 280.75) internal successors, (1123), 4 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:35,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:21:35,075 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:21:35,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-01-29 14:21:35,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-01-29 14:21:35,288 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 314 more)] === [2024-01-29 14:21:35,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:21:35,288 INFO L85 PathProgramCache]: Analyzing trace with hash 640552815, now seen corresponding path program 1 times [2024-01-29 14:21:35,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:21:35,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714033249] [2024-01-29 14:21:35,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:35,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:21:35,324 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-01-29 14:21:35,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [797664943] [2024-01-29 14:21:35,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:35,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:21:35,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:21:35,336 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 14:21:35,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-01-29 14:21:35,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:21:35,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-29 14:21:35,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 14:21:35,518 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:21:35,518 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 14:21:35,593 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:21:35,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:21:35,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714033249] [2024-01-29 14:21:35,594 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-01-29 14:21:35,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797664943] [2024-01-29 14:21:35,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797664943] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 14:21:35,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-01-29 14:21:35,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2024-01-29 14:21:35,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845382626] [2024-01-29 14:21:35,596 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-01-29 14:21:35,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:21:35,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:21:35,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:21:35,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:21:35,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 381 [2024-01-29 14:21:35,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 287 transitions, 901 flow. Second operand has 4 states, 4 states have (on average 329.75) internal successors, (1319), 4 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:35,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:21:35,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 381 [2024-01-29 14:21:35,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:21:38,477 INFO L124 PetriNetUnfolderBase]: 5613/23284 cut-off events. [2024-01-29 14:21:38,477 INFO L125 PetriNetUnfolderBase]: For 9153/12149 co-relation queries the response was YES. [2024-01-29 14:21:38,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45184 conditions, 23284 events. 5613/23284 cut-off events. For 9153/12149 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 258684 event pairs, 3507 based on Foata normal form. 510/21176 useless extension candidates. Maximal degree in co-relation 43880. Up to 6231 conditions per place. [2024-01-29 14:21:38,711 INFO L140 encePairwiseOnDemand]: 372/381 looper letters, 117 selfloop transitions, 3 changer transitions 0/346 dead transitions. [2024-01-29 14:21:38,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 346 transitions, 1363 flow [2024-01-29 14:21:38,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:21:38,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:21:38,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1417 transitions. [2024-01-29 14:21:38,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9297900262467191 [2024-01-29 14:21:38,714 INFO L175 Difference]: Start difference. First operand has 312 places, 287 transitions, 901 flow. Second operand 4 states and 1417 transitions. [2024-01-29 14:21:38,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 346 transitions, 1363 flow [2024-01-29 14:21:38,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 346 transitions, 1337 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-29 14:21:38,738 INFO L231 Difference]: Finished difference. Result has 313 places, 288 transitions, 919 flow [2024-01-29 14:21:38,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=891, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=919, PETRI_PLACES=313, PETRI_TRANSITIONS=288} [2024-01-29 14:21:38,738 INFO L281 CegarLoopForPetriNet]: 375 programPoint places, -62 predicate places. [2024-01-29 14:21:38,738 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 288 transitions, 919 flow [2024-01-29 14:21:38,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 329.75) internal successors, (1319), 4 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:38,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:21:38,739 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:21:38,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-01-29 14:21:38,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-01-29 14:21:38,951 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err54ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 314 more)] === [2024-01-29 14:21:38,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:21:38,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1801307268, now seen corresponding path program 1 times [2024-01-29 14:21:38,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:21:38,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133014113] [2024-01-29 14:21:38,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:38,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:21:38,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:21:38,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:21:38,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133014113] [2024-01-29 14:21:38,987 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2024-01-29 14:21:38,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587381791] [2024-01-29 14:21:38,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:38,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:21:38,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:21:39,009 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 14:21:39,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-01-29 14:21:39,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:21:39,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 3 conjunts are in the unsatisfiable core [2024-01-29 14:21:39,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 14:21:39,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-01-29 14:21:39,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:21:39,152 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-29 14:21:39,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587381791] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:21:39,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:21:39,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:21:39,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945723357] [2024-01-29 14:21:39,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:21:39,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:21:39,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:21:39,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:21:39,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:21:39,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 330 out of 381 [2024-01-29 14:21:39,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 288 transitions, 919 flow. Second operand has 3 states, 3 states have (on average 338.0) internal successors, (1014), 3 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:39,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:21:39,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 330 of 381 [2024-01-29 14:21:39,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:21:40,737 INFO L124 PetriNetUnfolderBase]: 1722/13334 cut-off events. [2024-01-29 14:21:40,738 INFO L125 PetriNetUnfolderBase]: For 5763/5871 co-relation queries the response was YES. [2024-01-29 14:21:40,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23894 conditions, 13334 events. 1722/13334 cut-off events. For 5763/5871 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 127984 event pairs, 387 based on Foata normal form. 266/13414 useless extension candidates. Maximal degree in co-relation 23420. Up to 2345 conditions per place. [2024-01-29 14:21:40,811 INFO L140 encePairwiseOnDemand]: 377/381 looper letters, 69 selfloop transitions, 4 changer transitions 0/303 dead transitions. [2024-01-29 14:21:40,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 303 transitions, 1147 flow [2024-01-29 14:21:40,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:21:40,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:21:40,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1051 transitions. [2024-01-29 14:21:40,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9195100612423447 [2024-01-29 14:21:40,813 INFO L175 Difference]: Start difference. First operand has 313 places, 288 transitions, 919 flow. Second operand 3 states and 1051 transitions. [2024-01-29 14:21:40,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 303 transitions, 1147 flow [2024-01-29 14:21:40,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 303 transitions, 1083 flow, removed 28 selfloop flow, removed 2 redundant places. [2024-01-29 14:21:40,935 INFO L231 Difference]: Finished difference. Result has 311 places, 286 transitions, 861 flow [2024-01-29 14:21:40,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=853, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=861, PETRI_PLACES=311, PETRI_TRANSITIONS=286} [2024-01-29 14:21:40,936 INFO L281 CegarLoopForPetriNet]: 375 programPoint places, -64 predicate places. [2024-01-29 14:21:40,936 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 286 transitions, 861 flow [2024-01-29 14:21:40,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 338.0) internal successors, (1014), 3 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:40,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:21:40,938 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:21:40,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-01-29 14:21:41,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:21:41,154 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 314 more)] === [2024-01-29 14:21:41,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:21:41,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1610735022, now seen corresponding path program 1 times [2024-01-29 14:21:41,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:21:41,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536605616] [2024-01-29 14:21:41,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:41,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:21:41,196 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-01-29 14:21:41,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [781733477] [2024-01-29 14:21:41,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:41,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:21:41,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:21:41,198 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 14:21:41,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-01-29 14:21:41,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:21:41,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 2 conjunts are in the unsatisfiable core [2024-01-29 14:21:41,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 14:21:41,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:21:41,357 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-29 14:21:41,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:21:41,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536605616] [2024-01-29 14:21:41,357 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-01-29 14:21:41,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781733477] [2024-01-29 14:21:41,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781733477] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:21:41,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:21:41,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-29 14:21:41,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070874917] [2024-01-29 14:21:41,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:21:41,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:21:41,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:21:41,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:21:41,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:21:41,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 381 [2024-01-29 14:21:41,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 286 transitions, 861 flow. Second operand has 3 states, 3 states have (on average 270.6666666666667) internal successors, (812), 3 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:41,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:21:41,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 381 [2024-01-29 14:21:41,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:21:43,183 INFO L124 PetriNetUnfolderBase]: 4358/14594 cut-off events. [2024-01-29 14:21:43,184 INFO L125 PetriNetUnfolderBase]: For 11240/11474 co-relation queries the response was YES. [2024-01-29 14:21:43,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31045 conditions, 14594 events. 4358/14594 cut-off events. For 11240/11474 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 119269 event pairs, 3818 based on Foata normal form. 760/14735 useless extension candidates. Maximal degree in co-relation 30217. Up to 7723 conditions per place. [2024-01-29 14:21:43,289 INFO L140 encePairwiseOnDemand]: 355/381 looper letters, 112 selfloop transitions, 4 changer transitions 0/272 dead transitions. [2024-01-29 14:21:43,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 272 transitions, 1045 flow [2024-01-29 14:21:43,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:21:43,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:21:43,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 895 transitions. [2024-01-29 14:21:43,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7830271216097988 [2024-01-29 14:21:43,291 INFO L175 Difference]: Start difference. First operand has 311 places, 286 transitions, 861 flow. Second operand 3 states and 895 transitions. [2024-01-29 14:21:43,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 272 transitions, 1045 flow [2024-01-29 14:21:43,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 272 transitions, 1041 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-29 14:21:43,309 INFO L231 Difference]: Finished difference. Result has 289 places, 263 transitions, 771 flow [2024-01-29 14:21:43,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=763, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=771, PETRI_PLACES=289, PETRI_TRANSITIONS=263} [2024-01-29 14:21:43,309 INFO L281 CegarLoopForPetriNet]: 375 programPoint places, -86 predicate places. [2024-01-29 14:21:43,310 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 263 transitions, 771 flow [2024-01-29 14:21:43,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 270.6666666666667) internal successors, (812), 3 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:43,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:21:43,310 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:21:43,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-01-29 14:21:43,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:21:43,522 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err6ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 314 more)] === [2024-01-29 14:21:43,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:21:43,523 INFO L85 PathProgramCache]: Analyzing trace with hash 872337332, now seen corresponding path program 1 times [2024-01-29 14:21:43,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:21:43,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234188429] [2024-01-29 14:21:43,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:43,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:21:43,557 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-01-29 14:21:43,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [13587342] [2024-01-29 14:21:43,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:43,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:21:43,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:21:43,580 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 14:21:43,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-01-29 14:21:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:21:43,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 2 conjunts are in the unsatisfiable core [2024-01-29 14:21:43,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 14:21:43,758 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:21:43,772 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-29 14:21:43,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:21:43,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234188429] [2024-01-29 14:21:43,772 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-01-29 14:21:43,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13587342] [2024-01-29 14:21:43,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13587342] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:21:43,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:21:43,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-29 14:21:43,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320869235] [2024-01-29 14:21:43,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:21:43,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:21:43,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:21:43,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:21:43,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:21:43,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 381 [2024-01-29 14:21:43,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 263 transitions, 771 flow. Second operand has 3 states, 3 states have (on average 270.3333333333333) internal successors, (811), 3 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:43,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:21:43,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 381 [2024-01-29 14:21:43,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:21:45,317 INFO L124 PetriNetUnfolderBase]: 3188/11958 cut-off events. [2024-01-29 14:21:45,317 INFO L125 PetriNetUnfolderBase]: For 8139/8359 co-relation queries the response was YES. [2024-01-29 14:21:45,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23765 conditions, 11958 events. 3188/11958 cut-off events. For 8139/8359 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 94800 event pairs, 2770 based on Foata normal form. 791/12345 useless extension candidates. Maximal degree in co-relation 22965. Up to 5605 conditions per place. [2024-01-29 14:21:45,379 INFO L140 encePairwiseOnDemand]: 355/381 looper letters, 88 selfloop transitions, 4 changer transitions 0/249 dead transitions. [2024-01-29 14:21:45,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 249 transitions, 907 flow [2024-01-29 14:21:45,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:21:45,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:21:45,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 874 transitions. [2024-01-29 14:21:45,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7646544181977253 [2024-01-29 14:21:45,381 INFO L175 Difference]: Start difference. First operand has 289 places, 263 transitions, 771 flow. Second operand 3 states and 874 transitions. [2024-01-29 14:21:45,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 249 transitions, 907 flow [2024-01-29 14:21:45,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 249 transitions, 899 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:21:45,391 INFO L231 Difference]: Finished difference. Result has 266 places, 240 transitions, 677 flow [2024-01-29 14:21:45,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=677, PETRI_PLACES=266, PETRI_TRANSITIONS=240} [2024-01-29 14:21:45,392 INFO L281 CegarLoopForPetriNet]: 375 programPoint places, -109 predicate places. [2024-01-29 14:21:45,392 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 240 transitions, 677 flow [2024-01-29 14:21:45,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 270.3333333333333) internal successors, (811), 3 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:45,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:21:45,392 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:21:45,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-01-29 14:21:45,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:21:45,604 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 314 more)] === [2024-01-29 14:21:45,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:21:45,605 INFO L85 PathProgramCache]: Analyzing trace with hash -277221137, now seen corresponding path program 1 times [2024-01-29 14:21:45,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:21:45,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269265300] [2024-01-29 14:21:45,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:45,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:21:45,617 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-01-29 14:21:45,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2004576168] [2024-01-29 14:21:45,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:45,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:21:45,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:21:45,619 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 14:21:45,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-01-29 14:21:45,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:21:45,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 7 conjunts are in the unsatisfiable core [2024-01-29 14:21:45,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 14:21:45,831 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:21:45,831 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 14:21:45,927 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:21:45,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:21:45,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269265300] [2024-01-29 14:21:45,927 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-01-29 14:21:45,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004576168] [2024-01-29 14:21:45,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004576168] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 14:21:45,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-01-29 14:21:45,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2024-01-29 14:21:45,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523723021] [2024-01-29 14:21:45,928 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-01-29 14:21:45,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-29 14:21:45,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:21:45,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-29 14:21:45,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-29 14:21:45,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 381 [2024-01-29 14:21:45,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 240 transitions, 677 flow. Second operand has 5 states, 5 states have (on average 329.2) internal successors, (1646), 5 states have internal predecessors, (1646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:45,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:21:45,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 381 [2024-01-29 14:21:45,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:21:48,130 INFO L124 PetriNetUnfolderBase]: 2484/14857 cut-off events. [2024-01-29 14:21:48,131 INFO L125 PetriNetUnfolderBase]: For 7433/7433 co-relation queries the response was YES. [2024-01-29 14:21:48,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25244 conditions, 14857 events. 2484/14857 cut-off events. For 7433/7433 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 138712 event pairs, 957 based on Foata normal form. 300/14823 useless extension candidates. Maximal degree in co-relation 18406. Up to 2090 conditions per place. [2024-01-29 14:21:48,240 INFO L140 encePairwiseOnDemand]: 372/381 looper letters, 150 selfloop transitions, 4 changer transitions 0/332 dead transitions. [2024-01-29 14:21:48,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 332 transitions, 1325 flow [2024-01-29 14:21:48,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-29 14:21:48,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-29 14:21:48,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1773 transitions. [2024-01-29 14:21:48,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9307086614173228 [2024-01-29 14:21:48,243 INFO L175 Difference]: Start difference. First operand has 266 places, 240 transitions, 677 flow. Second operand 5 states and 1773 transitions. [2024-01-29 14:21:48,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 332 transitions, 1325 flow [2024-01-29 14:21:48,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 332 transitions, 1313 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:21:48,254 INFO L231 Difference]: Finished difference. Result has 269 places, 241 transitions, 701 flow [2024-01-29 14:21:48,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=701, PETRI_PLACES=269, PETRI_TRANSITIONS=241} [2024-01-29 14:21:48,255 INFO L281 CegarLoopForPetriNet]: 375 programPoint places, -106 predicate places. [2024-01-29 14:21:48,255 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 241 transitions, 701 flow [2024-01-29 14:21:48,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 329.2) internal successors, (1646), 5 states have internal predecessors, (1646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:48,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:21:48,256 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:21:48,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-01-29 14:21:48,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-01-29 14:21:48,467 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t2Err31ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 314 more)] === [2024-01-29 14:21:48,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:21:48,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1916288002, now seen corresponding path program 1 times [2024-01-29 14:21:48,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:21:48,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482419569] [2024-01-29 14:21:48,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:48,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:21:48,482 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-01-29 14:21:48,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1999030947] [2024-01-29 14:21:48,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:48,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:21:48,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:21:48,483 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 14:21:48,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-01-29 14:21:48,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:21:48,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 12 conjunts are in the unsatisfiable core [2024-01-29 14:21:48,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 14:21:49,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:21:49,129 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-29 14:21:49,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:21:49,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482419569] [2024-01-29 14:21:49,130 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-01-29 14:21:49,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999030947] [2024-01-29 14:21:49,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999030947] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:21:49,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:21:49,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-29 14:21:49,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225949917] [2024-01-29 14:21:49,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:21:49,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-29 14:21:49,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:21:49,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-29 14:21:49,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-01-29 14:21:49,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 381 [2024-01-29 14:21:49,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 241 transitions, 701 flow. Second operand has 6 states, 6 states have (on average 323.6666666666667) internal successors, (1942), 6 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:49,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:21:49,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 381 [2024-01-29 14:21:49,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:21:51,216 INFO L124 PetriNetUnfolderBase]: 2775/14157 cut-off events. [2024-01-29 14:21:51,216 INFO L125 PetriNetUnfolderBase]: For 9401/9593 co-relation queries the response was YES. [2024-01-29 14:21:51,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26166 conditions, 14157 events. 2775/14157 cut-off events. For 9401/9593 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 126318 event pairs, 771 based on Foata normal form. 0/13625 useless extension candidates. Maximal degree in co-relation 25429. Up to 3313 conditions per place. [2024-01-29 14:21:51,307 INFO L140 encePairwiseOnDemand]: 375/381 looper letters, 94 selfloop transitions, 5 changer transitions 0/276 dead transitions. [2024-01-29 14:21:51,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 276 transitions, 1064 flow [2024-01-29 14:21:51,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-29 14:21:51,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-29 14:21:51,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2314 transitions. [2024-01-29 14:21:51,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8676415448068991 [2024-01-29 14:21:51,311 INFO L175 Difference]: Start difference. First operand has 269 places, 241 transitions, 701 flow. Second operand 7 states and 2314 transitions. [2024-01-29 14:21:51,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 276 transitions, 1064 flow [2024-01-29 14:21:51,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 276 transitions, 1046 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-01-29 14:21:51,323 INFO L231 Difference]: Finished difference. Result has 273 places, 242 transitions, 709 flow [2024-01-29 14:21:51,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=709, PETRI_PLACES=273, PETRI_TRANSITIONS=242} [2024-01-29 14:21:51,324 INFO L281 CegarLoopForPetriNet]: 375 programPoint places, -102 predicate places. [2024-01-29 14:21:51,324 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 242 transitions, 709 flow [2024-01-29 14:21:51,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 323.6666666666667) internal successors, (1942), 6 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:51,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:21:51,325 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:21:51,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-01-29 14:21:51,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-01-29 14:21:51,537 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t2Err31ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 314 more)] === [2024-01-29 14:21:51,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:21:51,537 INFO L85 PathProgramCache]: Analyzing trace with hash 876516372, now seen corresponding path program 1 times [2024-01-29 14:21:51,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:21:51,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672325997] [2024-01-29 14:21:51,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:51,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:21:51,553 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-01-29 14:21:51,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [467757757] [2024-01-29 14:21:51,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:51,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:21:51,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:21:51,554 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 14:21:51,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-01-29 14:21:51,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:21:51,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 19 conjunts are in the unsatisfiable core [2024-01-29 14:21:51,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 14:21:51,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2024-01-29 14:21:51,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 43 [2024-01-29 14:21:52,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 45 [2024-01-29 14:21:52,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:21:52,164 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-29 14:21:52,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:21:52,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672325997] [2024-01-29 14:21:52,164 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-01-29 14:21:52,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467757757] [2024-01-29 14:21:52,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467757757] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:21:52,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:21:52,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-29 14:21:52,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760178865] [2024-01-29 14:21:52,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:21:52,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-29 14:21:52,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:21:52,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-29 14:21:52,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-01-29 14:21:53,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 381 [2024-01-29 14:21:53,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 242 transitions, 709 flow. Second operand has 9 states, 9 states have (on average 237.66666666666666) internal successors, (2139), 9 states have internal predecessors, (2139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:53,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:21:53,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 381 [2024-01-29 14:21:53,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:21:59,005 INFO L124 PetriNetUnfolderBase]: 9967/32927 cut-off events. [2024-01-29 14:21:59,006 INFO L125 PetriNetUnfolderBase]: For 28456/28456 co-relation queries the response was YES. [2024-01-29 14:21:59,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70001 conditions, 32927 events. 9967/32927 cut-off events. For 28456/28456 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 296175 event pairs, 3338 based on Foata normal form. 0/31874 useless extension candidates. Maximal degree in co-relation 48966. Up to 4691 conditions per place. [2024-01-29 14:21:59,284 INFO L140 encePairwiseOnDemand]: 370/381 looper letters, 325 selfloop transitions, 17 changer transitions 5/486 dead transitions. [2024-01-29 14:21:59,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 486 transitions, 2359 flow [2024-01-29 14:21:59,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-29 14:21:59,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-29 14:21:59,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2875 transitions. [2024-01-29 14:21:59,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6859937962300167 [2024-01-29 14:21:59,290 INFO L175 Difference]: Start difference. First operand has 273 places, 242 transitions, 709 flow. Second operand 11 states and 2875 transitions. [2024-01-29 14:21:59,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 486 transitions, 2359 flow [2024-01-29 14:21:59,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 486 transitions, 2352 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-29 14:21:59,359 INFO L231 Difference]: Finished difference. Result has 287 places, 254 transitions, 829 flow [2024-01-29 14:21:59,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=829, PETRI_PLACES=287, PETRI_TRANSITIONS=254} [2024-01-29 14:21:59,360 INFO L281 CegarLoopForPetriNet]: 375 programPoint places, -88 predicate places. [2024-01-29 14:21:59,360 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 254 transitions, 829 flow [2024-01-29 14:21:59,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 237.66666666666666) internal successors, (2139), 9 states have internal predecessors, (2139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:59,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:21:59,362 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:21:59,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-01-29 14:21:59,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-01-29 14:21:59,562 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 314 more)] === [2024-01-29 14:21:59,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:21:59,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1056046959, now seen corresponding path program 2 times [2024-01-29 14:21:59,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:21:59,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172728577] [2024-01-29 14:21:59,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:59,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:21:59,577 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-01-29 14:21:59,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1822004814] [2024-01-29 14:21:59,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-29 14:21:59,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:21:59,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:21:59,578 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 14:21:59,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-01-29 14:21:59,713 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-29 14:21:59,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-29 14:21:59,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 9 conjunts are in the unsatisfiable core [2024-01-29 14:21:59,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 14:21:59,831 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:21:59,831 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 14:21:59,948 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:21:59,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:21:59,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172728577] [2024-01-29 14:21:59,948 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-01-29 14:21:59,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822004814] [2024-01-29 14:21:59,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822004814] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 14:21:59,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-01-29 14:21:59,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2024-01-29 14:21:59,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868318120] [2024-01-29 14:21:59,949 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-01-29 14:21:59,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-29 14:21:59,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:21:59,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-29 14:21:59,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-01-29 14:22:00,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 381 [2024-01-29 14:22:00,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 254 transitions, 829 flow. Second operand has 6 states, 6 states have (on average 328.8333333333333) internal successors, (1973), 6 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:22:00,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:22:00,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 381 [2024-01-29 14:22:00,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:22:06,834 INFO L124 PetriNetUnfolderBase]: 6249/35719 cut-off events. [2024-01-29 14:22:06,835 INFO L125 PetriNetUnfolderBase]: For 27849/27873 co-relation queries the response was YES. [2024-01-29 14:22:07,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64871 conditions, 35719 events. 6249/35719 cut-off events. For 27849/27873 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 383262 event pairs, 2428 based on Foata normal form. 768/35714 useless extension candidates. Maximal degree in co-relation 61048. Up to 5059 conditions per place. [2024-01-29 14:22:07,153 INFO L140 encePairwiseOnDemand]: 372/381 looper letters, 210 selfloop transitions, 7 changer transitions 0/395 dead transitions. [2024-01-29 14:22:07,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 395 transitions, 1924 flow [2024-01-29 14:22:07,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-29 14:22:07,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-29 14:22:07,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2127 transitions. [2024-01-29 14:22:07,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9304461942257218 [2024-01-29 14:22:07,155 INFO L175 Difference]: Start difference. First operand has 287 places, 254 transitions, 829 flow. Second operand 6 states and 2127 transitions. [2024-01-29 14:22:07,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 395 transitions, 1924 flow [2024-01-29 14:22:07,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 395 transitions, 1898 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-01-29 14:22:07,194 INFO L231 Difference]: Finished difference. Result has 291 places, 255 transitions, 860 flow [2024-01-29 14:22:07,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=820, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=860, PETRI_PLACES=291, PETRI_TRANSITIONS=255} [2024-01-29 14:22:07,194 INFO L281 CegarLoopForPetriNet]: 375 programPoint places, -84 predicate places. [2024-01-29 14:22:07,194 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 255 transitions, 860 flow [2024-01-29 14:22:07,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 328.8333333333333) internal successors, (1973), 6 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:22:07,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:22:07,196 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:22:07,207 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-01-29 14:22:07,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-01-29 14:22:07,402 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 314 more)] === [2024-01-29 14:22:07,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:22:07,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1569456367, now seen corresponding path program 3 times [2024-01-29 14:22:07,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:22:07,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120568102] [2024-01-29 14:22:07,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:22:07,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:22:07,440 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-01-29 14:22:07,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1816840414] [2024-01-29 14:22:07,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-29 14:22:07,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:22:07,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:22:07,461 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 14:22:07,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-01-29 14:22:07,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-01-29 14:22:07,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-29 14:22:07,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 9 conjunts are in the unsatisfiable core [2024-01-29 14:22:07,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 14:22:07,661 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-01-29 14:22:07,662 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-29 14:22:07,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:22:07,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120568102] [2024-01-29 14:22:07,662 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-01-29 14:22:07,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816840414] [2024-01-29 14:22:07,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816840414] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:22:07,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:22:07,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-29 14:22:07,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164784601] [2024-01-29 14:22:07,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:22:07,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-29 14:22:07,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:22:07,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-29 14:22:07,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-01-29 14:22:07,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 381 [2024-01-29 14:22:07,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 255 transitions, 860 flow. Second operand has 5 states, 5 states have (on average 322.2) internal successors, (1611), 5 states have internal predecessors, (1611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:22:07,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:22:07,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 381 [2024-01-29 14:22:07,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:22:14,780 INFO L124 PetriNetUnfolderBase]: 9549/40029 cut-off events. [2024-01-29 14:22:14,780 INFO L125 PetriNetUnfolderBase]: For 34967/34967 co-relation queries the response was YES. [2024-01-29 14:22:15,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77638 conditions, 40029 events. 9549/40029 cut-off events. For 34967/34967 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 407639 event pairs, 2304 based on Foata normal form. 496/39493 useless extension candidates. Maximal degree in co-relation 76681. Up to 11972 conditions per place. [2024-01-29 14:22:15,100 INFO L140 encePairwiseOnDemand]: 372/381 looper letters, 135 selfloop transitions, 9 changer transitions 0/313 dead transitions. [2024-01-29 14:22:15,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 313 transitions, 1360 flow [2024-01-29 14:22:15,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-29 14:22:15,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-29 14:22:15,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1700 transitions. [2024-01-29 14:22:15,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8923884514435696 [2024-01-29 14:22:15,102 INFO L175 Difference]: Start difference. First operand has 291 places, 255 transitions, 860 flow. Second operand 5 states and 1700 transitions. [2024-01-29 14:22:15,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 313 transitions, 1360 flow [2024-01-29 14:22:15,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 313 transitions, 1342 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-01-29 14:22:15,153 INFO L231 Difference]: Finished difference. Result has 286 places, 250 transitions, 812 flow [2024-01-29 14:22:15,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=782, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=812, PETRI_PLACES=286, PETRI_TRANSITIONS=250} [2024-01-29 14:22:15,154 INFO L281 CegarLoopForPetriNet]: 375 programPoint places, -89 predicate places. [2024-01-29 14:22:15,154 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 250 transitions, 812 flow [2024-01-29 14:22:15,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 322.2) internal successors, (1611), 5 states have internal predecessors, (1611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:22:15,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:22:15,155 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:22:15,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-01-29 14:22:15,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:22:15,365 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t1Err81ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 314 more)] === [2024-01-29 14:22:15,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:22:15,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1569457392, now seen corresponding path program 1 times [2024-01-29 14:22:15,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:22:15,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698775695] [2024-01-29 14:22:15,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:22:15,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:22:15,382 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-01-29 14:22:15,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [566861288] [2024-01-29 14:22:15,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:22:15,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:22:15,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:22:15,399 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 14:22:15,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-01-29 14:22:15,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:22:15,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-29 14:22:15,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 14:22:15,690 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:22:15,690 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 14:22:15,854 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:22:15,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:22:15,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698775695] [2024-01-29 14:22:15,854 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-01-29 14:22:15,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566861288] [2024-01-29 14:22:15,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566861288] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 14:22:15,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-01-29 14:22:15,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2024-01-29 14:22:15,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566185925] [2024-01-29 14:22:15,855 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-01-29 14:22:15,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-29 14:22:15,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:22:15,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-29 14:22:15,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-29 14:22:15,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 381 [2024-01-29 14:22:15,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 250 transitions, 812 flow. Second operand has 9 states, 9 states have (on average 324.22222222222223) internal successors, (2918), 9 states have internal predecessors, (2918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:22:15,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:22:15,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 381 [2024-01-29 14:22:15,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:22:27,486 INFO L124 PetriNetUnfolderBase]: 14011/57355 cut-off events. [2024-01-29 14:22:27,487 INFO L125 PetriNetUnfolderBase]: For 59820/59856 co-relation queries the response was YES. [2024-01-29 14:22:27,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115942 conditions, 57355 events. 14011/57355 cut-off events. For 59820/59856 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 618974 event pairs, 1114 based on Foata normal form. 690/56254 useless extension candidates. Maximal degree in co-relation 112838. Up to 5392 conditions per place. [2024-01-29 14:22:28,016 INFO L140 encePairwiseOnDemand]: 377/381 looper letters, 372 selfloop transitions, 11 changer transitions 0/552 dead transitions. [2024-01-29 14:22:28,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 552 transitions, 2859 flow [2024-01-29 14:22:28,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-29 14:22:28,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-29 14:22:28,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3154 transitions. [2024-01-29 14:22:28,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9198016914552347 [2024-01-29 14:22:28,019 INFO L175 Difference]: Start difference. First operand has 286 places, 250 transitions, 812 flow. Second operand 9 states and 3154 transitions. [2024-01-29 14:22:28,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 552 transitions, 2859 flow [2024-01-29 14:22:28,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 552 transitions, 2848 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-01-29 14:22:28,096 INFO L231 Difference]: Finished difference. Result has 296 places, 253 transitions, 872 flow [2024-01-29 14:22:28,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=805, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=872, PETRI_PLACES=296, PETRI_TRANSITIONS=253} [2024-01-29 14:22:28,097 INFO L281 CegarLoopForPetriNet]: 375 programPoint places, -79 predicate places. [2024-01-29 14:22:28,097 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 253 transitions, 872 flow [2024-01-29 14:22:28,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 324.22222222222223) internal successors, (2918), 9 states have internal predecessors, (2918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:22:28,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:22:28,098 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:22:28,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-01-29 14:22:28,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-01-29 14:22:28,310 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting t1Err17ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 314 more)] === [2024-01-29 14:22:28,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:22:28,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1503955684, now seen corresponding path program 1 times [2024-01-29 14:22:28,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:22:28,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465755745] [2024-01-29 14:22:28,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:22:28,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:22:28,326 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-01-29 14:22:28,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [223030348] [2024-01-29 14:22:28,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:22:28,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 14:22:28,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:22:28,327 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 14:22:28,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-01-29 14:22:28,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:22:28,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-29 14:22:28,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 14:22:28,672 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:22:28,672 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 14:22:28,835 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:22:28,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:22:28,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465755745] [2024-01-29 14:22:28,836 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-01-29 14:22:28,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223030348] [2024-01-29 14:22:28,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223030348] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 14:22:28,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-01-29 14:22:28,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-01-29 14:22:28,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593326520] [2024-01-29 14:22:28,837 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-01-29 14:22:28,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-29 14:22:28,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:22:28,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-29 14:22:28,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-01-29 14:22:28,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 381 [2024-01-29 14:22:28,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 253 transitions, 872 flow. Second operand has 7 states, 7 states have (on average 312.57142857142856) internal successors, (2188), 7 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:22:28,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:22:28,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 381 [2024-01-29 14:22:28,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand