./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/mutex-meet/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i ./goblint.2024-05-21_14-57-05.files/mutex-meet/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-bcb38a6-m [2024-06-04 16:01:07,313 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 16:01:07,392 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 16:01:07,396 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 16:01:07,396 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 16:01:07,416 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 16:01:07,417 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 16:01:07,417 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 16:01:07,418 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 16:01:07,420 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 16:01:07,421 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 16:01:07,421 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 16:01:07,422 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 16:01:07,422 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 16:01:07,423 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 16:01:07,423 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 16:01:07,423 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 16:01:07,423 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 16:01:07,423 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 16:01:07,424 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 16:01:07,424 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 16:01:07,424 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 16:01:07,424 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 16:01:07,424 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 16:01:07,425 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 16:01:07,425 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 16:01:07,425 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 16:01:07,425 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 16:01:07,426 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 16:01:07,426 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 16:01:07,427 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 16:01:07,427 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 16:01:07,427 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 16:01:07,427 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 16:01:07,427 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 16:01:07,427 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 16:01:07,427 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 16:01:07,428 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 16:01:07,429 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 16:01:07,429 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 16:01:07,429 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 16:01:07,429 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 16:01:07,429 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 16:01:07,429 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 16:01:07,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 16:01:07,646 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 16:01:07,648 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 16:01:07,649 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 16:01:07,649 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 16:01:07,650 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-06-04 16:01:08,597 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 16:01:08,792 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 16:01:08,793 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-06-04 16:01:08,802 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca7d01841/d5ecb9beaf7349e796bb91a80ce64fad/FLAGeabebe118 [2024-06-04 16:01:08,811 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca7d01841/d5ecb9beaf7349e796bb91a80ce64fad [2024-06-04 16:01:08,813 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 16:01:08,813 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 16:01:08,814 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml [2024-06-04 16:01:08,909 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 16:01:08,911 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 16:01:08,912 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 16:01:08,912 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 16:01:08,915 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 16:01:08,916 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 04:01:08" (1/2) ... [2024-06-04 16:01:08,918 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f2e245e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:01:08, skipping insertion in model container [2024-06-04 16:01:08,918 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 04:01:08" (1/2) ... [2024-06-04 16:01:08,919 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@515f5f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:01:08, skipping insertion in model container [2024-06-04 16:01:08,920 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 04:01:08" (2/2) ... [2024-06-04 16:01:08,920 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f2e245e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:01:08, skipping insertion in model container [2024-06-04 16:01:08,920 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 04:01:08" (2/2) ... [2024-06-04 16:01:08,920 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 16:01:08,952 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 16:01:08,953 INFO L97 edCorrectnessWitness]: Location invariant before [L764-L764] ((((((! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL && (1LL - (long long )__unbuffered_p1_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (1LL - (long long )x) + (long long )y >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p0_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x >= 0LL) && (long long )__unbuffered_cnt + (long long )y >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y >= 0LL) && (long long )main$tmp_guard1 + (long long )x >= 0LL) && (long long )main$tmp_guard1 + (long long )y >= 0LL) && (long long )x + (long long )y >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || ((((((((((((0 <= __unbuffered_cnt && 0 <= __unbuffered_p0_EAX) && 0 <= __unbuffered_p1_EAX) && 0 <= x) && 0 <= y) && __unbuffered_p0_EAX <= 1) && __unbuffered_p1_EAX <= 1) && x <= 1) && y <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-04 16:01:08,953 INFO L97 edCorrectnessWitness]: Location invariant before [L763-L763] ((((((! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL && (1LL - (long long )__unbuffered_p1_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (1LL - (long long )x) + (long long )y >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p0_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x >= 0LL) && (long long )__unbuffered_cnt + (long long )y >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y >= 0LL) && (long long )main$tmp_guard1 + (long long )x >= 0LL) && (long long )main$tmp_guard1 + (long long )y >= 0LL) && (long long )x + (long long )y >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || ((((((((((((0 <= __unbuffered_cnt && 0 <= __unbuffered_p0_EAX) && 0 <= __unbuffered_p1_EAX) && 0 <= x) && 0 <= y) && __unbuffered_p0_EAX <= 1) && __unbuffered_p1_EAX <= 1) && x <= 1) && y <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-04 16:01:08,953 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 16:01:08,953 INFO L106 edCorrectnessWitness]: ghost_update [L761-L761] multithreaded = 1; [2024-06-04 16:01:08,989 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 16:01:09,264 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 16:01:09,272 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-04 16:01:09,380 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 16:01:09,411 INFO L206 MainTranslator]: Completed translation [2024-06-04 16:01:09,411 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:01:09 WrapperNode [2024-06-04 16:01:09,411 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 16:01:09,412 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 16:01:09,412 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 16:01:09,412 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 16:01:09,418 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:01:09" (1/1) ... [2024-06-04 16:01:09,445 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:01:09" (1/1) ... [2024-06-04 16:01:09,482 INFO L138 Inliner]: procedures = 174, calls = 33, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 57 [2024-06-04 16:01:09,487 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 16:01:09,488 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 16:01:09,488 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 16:01:09,488 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 16:01:09,497 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:01:09" (1/1) ... [2024-06-04 16:01:09,497 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:01:09" (1/1) ... [2024-06-04 16:01:09,502 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:01:09" (1/1) ... [2024-06-04 16:01:09,528 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-04 16:01:09,529 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:01:09" (1/1) ... [2024-06-04 16:01:09,529 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:01:09" (1/1) ... [2024-06-04 16:01:09,537 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:01:09" (1/1) ... [2024-06-04 16:01:09,538 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:01:09" (1/1) ... [2024-06-04 16:01:09,539 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:01:09" (1/1) ... [2024-06-04 16:01:09,540 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:01:09" (1/1) ... [2024-06-04 16:01:09,542 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 16:01:09,543 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 16:01:09,543 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 16:01:09,543 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 16:01:09,544 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:01:09" (1/1) ... [2024-06-04 16:01:09,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 16:01:09,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 16:01:09,565 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-04 16:01:09,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-04 16:01:09,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-04 16:01:09,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 16:01:09,597 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-04 16:01:09,597 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-04 16:01:09,597 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-04 16:01:09,597 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-04 16:01:09,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 16:01:09,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-04 16:01:09,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 16:01:09,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 16:01:09,599 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-04 16:01:09,712 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 16:01:09,714 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 16:01:09,899 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 16:01:09,899 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 16:01:09,957 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 16:01:09,957 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-04 16:01:09,958 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 04:01:09 BoogieIcfgContainer [2024-06-04 16:01:09,958 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 16:01:09,959 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 16:01:09,959 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 16:01:09,961 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 16:01:09,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 04:01:08" (1/4) ... [2024-06-04 16:01:09,962 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4241f686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 04:01:09, skipping insertion in model container [2024-06-04 16:01:09,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 04:01:08" (2/4) ... [2024-06-04 16:01:09,962 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4241f686 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 04:01:09, skipping insertion in model container [2024-06-04 16:01:09,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:01:09" (3/4) ... [2024-06-04 16:01:09,963 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4241f686 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 04:01:09, skipping insertion in model container [2024-06-04 16:01:09,963 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 04:01:09" (4/4) ... [2024-06-04 16:01:09,964 INFO L112 eAbstractionObserver]: Analyzing ICFG safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-06-04 16:01:09,975 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 16:01:09,975 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-04 16:01:09,976 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 16:01:10,009 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-04 16:01:10,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 30 transitions, 68 flow [2024-06-04 16:01:10,118 INFO L124 PetriNetUnfolderBase]: 0/28 cut-off events. [2024-06-04 16:01:10,118 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 16:01:10,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 28 events. 0/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-04 16:01:10,125 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 30 transitions, 68 flow [2024-06-04 16:01:10,127 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 22 transitions, 50 flow [2024-06-04 16:01:10,133 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 16:01:10,138 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;@67a19257, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 16:01:10,138 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-04 16:01:10,142 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 16:01:10,143 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-06-04 16:01:10,143 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 16:01:10,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:01:10,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-04 16:01:10,144 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:01:10,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:01:10,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1558221865, now seen corresponding path program 1 times [2024-06-04 16:01:10,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:01:10,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922551889] [2024-06-04 16:01:10,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:01:10,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:01:10,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:01:10,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:01:10,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:01:10,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922551889] [2024-06-04 16:01:10,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922551889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:01:10,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:01:10,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-04 16:01:10,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412115604] [2024-06-04 16:01:10,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:01:10,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 16:01:10,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:01:10,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 16:01:10,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 16:01:10,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-04 16:01:10,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:10,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:01:10,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-04 16:01:10,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:01:10,788 INFO L124 PetriNetUnfolderBase]: 66/148 cut-off events. [2024-06-04 16:01:10,789 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-04 16:01:10,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 148 events. 66/148 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 525 event pairs, 33 based on Foata normal form. 1/143 useless extension candidates. Maximal degree in co-relation 279. Up to 124 conditions per place. [2024-06-04 16:01:10,792 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 19 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2024-06-04 16:01:10,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 28 transitions, 109 flow [2024-06-04 16:01:10,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 16:01:10,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 16:01:10,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2024-06-04 16:01:10,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-04 16:01:10,804 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 50 flow. Second operand 3 states and 60 transitions. [2024-06-04 16:01:10,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 28 transitions, 109 flow [2024-06-04 16:01:10,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 28 transitions, 106 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-04 16:01:10,808 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 69 flow [2024-06-04 16:01:10,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2024-06-04 16:01:10,812 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2024-06-04 16:01:10,812 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 69 flow [2024-06-04 16:01:10,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:10,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:01:10,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:01:10,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 16:01:10,813 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:01:10,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:01:10,815 INFO L85 PathProgramCache]: Analyzing trace with hash 984845510, now seen corresponding path program 1 times [2024-06-04 16:01:10,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:01:10,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760441255] [2024-06-04 16:01:10,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:01:10,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:01:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:01:11,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:01:11,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:01:11,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760441255] [2024-06-04 16:01:11,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760441255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:01:11,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:01:11,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 16:01:11,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62179360] [2024-06-04 16:01:11,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:01:11,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-04 16:01:11,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:01:11,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-04 16:01:11,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-04 16:01:11,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-04 16:01:11,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 69 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:11,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:01:11,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-04 16:01:11,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:01:11,226 INFO L124 PetriNetUnfolderBase]: 99/210 cut-off events. [2024-06-04 16:01:11,226 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-06-04 16:01:11,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 210 events. 99/210 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 767 event pairs, 33 based on Foata normal form. 2/211 useless extension candidates. Maximal degree in co-relation 463. Up to 164 conditions per place. [2024-06-04 16:01:11,229 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 28 selfloop transitions, 5 changer transitions 0/37 dead transitions. [2024-06-04 16:01:11,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 37 transitions, 168 flow [2024-06-04 16:01:11,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 16:01:11,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 16:01:11,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2024-06-04 16:01:11,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6083333333333333 [2024-06-04 16:01:11,232 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 69 flow. Second operand 4 states and 73 transitions. [2024-06-04 16:01:11,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 37 transitions, 168 flow [2024-06-04 16:01:11,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 37 transitions, 164 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-04 16:01:11,235 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 102 flow [2024-06-04 16:01:11,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2024-06-04 16:01:11,236 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 5 predicate places. [2024-06-04 16:01:11,236 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 102 flow [2024-06-04 16:01:11,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:11,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:01:11,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:01:11,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 16:01:11,238 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:01:11,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:01:11,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1543765317, now seen corresponding path program 1 times [2024-06-04 16:01:11,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:01:11,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903437720] [2024-06-04 16:01:11,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:01:11,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:01:11,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:01:11,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:01:11,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:01:11,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903437720] [2024-06-04 16:01:11,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903437720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:01:11,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:01:11,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 16:01:11,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606123842] [2024-06-04 16:01:11,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:01:11,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 16:01:11,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:01:11,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 16:01:11,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-04 16:01:11,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-04 16:01:11,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 102 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:11,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:01:11,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-04 16:01:11,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:01:11,575 INFO L124 PetriNetUnfolderBase]: 95/202 cut-off events. [2024-06-04 16:01:11,575 INFO L125 PetriNetUnfolderBase]: For 105/107 co-relation queries the response was YES. [2024-06-04 16:01:11,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518 conditions, 202 events. 95/202 cut-off events. For 105/107 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 720 event pairs, 17 based on Foata normal form. 6/207 useless extension candidates. Maximal degree in co-relation 500. Up to 138 conditions per place. [2024-06-04 16:01:11,579 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 28 selfloop transitions, 6 changer transitions 0/38 dead transitions. [2024-06-04 16:01:11,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 38 transitions, 190 flow [2024-06-04 16:01:11,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 16:01:11,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 16:01:11,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 84 transitions. [2024-06-04 16:01:11,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-06-04 16:01:11,582 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 102 flow. Second operand 5 states and 84 transitions. [2024-06-04 16:01:11,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 38 transitions, 190 flow [2024-06-04 16:01:11,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 38 transitions, 190 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-04 16:01:11,585 INFO L231 Difference]: Finished difference. Result has 38 places, 27 transitions, 112 flow [2024-06-04 16:01:11,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=112, PETRI_PLACES=38, PETRI_TRANSITIONS=27} [2024-06-04 16:01:11,586 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2024-06-04 16:01:11,586 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 27 transitions, 112 flow [2024-06-04 16:01:11,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:11,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:01:11,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:01:11,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-04 16:01:11,587 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:01:11,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:01:11,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1100810531, now seen corresponding path program 1 times [2024-06-04 16:01:11,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:01:11,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639606835] [2024-06-04 16:01:11,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:01:11,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:01:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:01:11,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:01:11,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:01:11,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639606835] [2024-06-04 16:01:11,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639606835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:01:11,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:01:11,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 16:01:11,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197349439] [2024-06-04 16:01:11,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:01:11,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-04 16:01:11,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:01:11,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-04 16:01:11,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-04 16:01:11,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-04 16:01:11,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 27 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:11,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:01:11,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-04 16:01:11,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:01:11,897 INFO L124 PetriNetUnfolderBase]: 93/195 cut-off events. [2024-06-04 16:01:11,898 INFO L125 PetriNetUnfolderBase]: For 177/177 co-relation queries the response was YES. [2024-06-04 16:01:11,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 550 conditions, 195 events. 93/195 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 681 event pairs, 25 based on Foata normal form. 1/195 useless extension candidates. Maximal degree in co-relation 529. Up to 165 conditions per place. [2024-06-04 16:01:11,899 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 28 selfloop transitions, 5 changer transitions 0/37 dead transitions. [2024-06-04 16:01:11,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 37 transitions, 207 flow [2024-06-04 16:01:11,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 16:01:11,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 16:01:11,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2024-06-04 16:01:11,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-06-04 16:01:11,901 INFO L175 Difference]: Start difference. First operand has 38 places, 27 transitions, 112 flow. Second operand 4 states and 68 transitions. [2024-06-04 16:01:11,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 37 transitions, 207 flow [2024-06-04 16:01:11,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 37 transitions, 188 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-04 16:01:11,902 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 130 flow [2024-06-04 16:01:11,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=130, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2024-06-04 16:01:11,903 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 10 predicate places. [2024-06-04 16:01:11,903 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 130 flow [2024-06-04 16:01:11,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:11,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:01:11,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:01:11,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-04 16:01:11,904 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:01:11,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:01:11,905 INFO L85 PathProgramCache]: Analyzing trace with hash -77355414, now seen corresponding path program 1 times [2024-06-04 16:01:11,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:01:11,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117060142] [2024-06-04 16:01:11,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:01:11,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:01:11,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:01:12,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:01:12,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:01:12,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117060142] [2024-06-04 16:01:12,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117060142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:01:12,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:01:12,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 16:01:12,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077809638] [2024-06-04 16:01:12,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:01:12,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 16:01:12,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:01:12,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 16:01:12,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-04 16:01:12,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-04 16:01:12,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 130 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:12,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:01:12,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-04 16:01:12,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:01:12,218 INFO L124 PetriNetUnfolderBase]: 96/205 cut-off events. [2024-06-04 16:01:12,218 INFO L125 PetriNetUnfolderBase]: For 229/231 co-relation queries the response was YES. [2024-06-04 16:01:12,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 603 conditions, 205 events. 96/205 cut-off events. For 229/231 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 744 event pairs, 31 based on Foata normal form. 3/207 useless extension candidates. Maximal degree in co-relation 581. Up to 143 conditions per place. [2024-06-04 16:01:12,219 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 30 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2024-06-04 16:01:12,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 45 transitions, 260 flow [2024-06-04 16:01:12,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 16:01:12,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 16:01:12,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2024-06-04 16:01:12,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.58 [2024-06-04 16:01:12,221 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 130 flow. Second operand 5 states and 87 transitions. [2024-06-04 16:01:12,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 45 transitions, 260 flow [2024-06-04 16:01:12,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 45 transitions, 260 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-04 16:01:12,222 INFO L231 Difference]: Finished difference. Result has 44 places, 35 transitions, 177 flow [2024-06-04 16:01:12,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=177, PETRI_PLACES=44, PETRI_TRANSITIONS=35} [2024-06-04 16:01:12,223 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2024-06-04 16:01:12,223 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 35 transitions, 177 flow [2024-06-04 16:01:12,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:12,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:01:12,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:01:12,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-04 16:01:12,224 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:01:12,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:01:12,224 INFO L85 PathProgramCache]: Analyzing trace with hash 181547080, now seen corresponding path program 2 times [2024-06-04 16:01:12,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:01:12,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106058627] [2024-06-04 16:01:12,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:01:12,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:01:12,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:01:12,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:01:12,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:01:12,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106058627] [2024-06-04 16:01:12,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106058627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:01:12,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:01:12,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 16:01:12,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356273198] [2024-06-04 16:01:12,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:01:12,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 16:01:12,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:01:12,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 16:01:12,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-04 16:01:12,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-04 16:01:12,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 177 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:12,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:01:12,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-04 16:01:12,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:01:12,590 INFO L124 PetriNetUnfolderBase]: 94/202 cut-off events. [2024-06-04 16:01:12,590 INFO L125 PetriNetUnfolderBase]: For 370/372 co-relation queries the response was YES. [2024-06-04 16:01:12,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 655 conditions, 202 events. 94/202 cut-off events. For 370/372 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 734 event pairs, 31 based on Foata normal form. 3/204 useless extension candidates. Maximal degree in co-relation 630. Up to 144 conditions per place. [2024-06-04 16:01:12,592 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 30 selfloop transitions, 9 changer transitions 0/43 dead transitions. [2024-06-04 16:01:12,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 43 transitions, 275 flow [2024-06-04 16:01:12,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 16:01:12,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 16:01:12,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2024-06-04 16:01:12,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6083333333333333 [2024-06-04 16:01:12,593 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 177 flow. Second operand 4 states and 73 transitions. [2024-06-04 16:01:12,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 43 transitions, 275 flow [2024-06-04 16:01:12,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 43 transitions, 264 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-04 16:01:12,594 INFO L231 Difference]: Finished difference. Result has 47 places, 35 transitions, 192 flow [2024-06-04 16:01:12,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=192, PETRI_PLACES=47, PETRI_TRANSITIONS=35} [2024-06-04 16:01:12,595 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 18 predicate places. [2024-06-04 16:01:12,595 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 35 transitions, 192 flow [2024-06-04 16:01:12,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:12,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:01:12,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:01:12,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-04 16:01:12,596 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:01:12,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:01:12,596 INFO L85 PathProgramCache]: Analyzing trace with hash 181547266, now seen corresponding path program 1 times [2024-06-04 16:01:12,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:01:12,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527831906] [2024-06-04 16:01:12,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:01:12,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:01:12,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:01:12,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:01:12,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:01:12,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527831906] [2024-06-04 16:01:12,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527831906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:01:12,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:01:12,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 16:01:12,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903273171] [2024-06-04 16:01:12,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:01:12,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 16:01:12,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:01:12,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 16:01:12,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-04 16:01:12,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-04 16:01:12,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 35 transitions, 192 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:12,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:01:12,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-04 16:01:12,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:01:12,885 INFO L124 PetriNetUnfolderBase]: 97/207 cut-off events. [2024-06-04 16:01:12,885 INFO L125 PetriNetUnfolderBase]: For 525/527 co-relation queries the response was YES. [2024-06-04 16:01:12,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 714 conditions, 207 events. 97/207 cut-off events. For 525/527 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 763 event pairs, 30 based on Foata normal form. 3/209 useless extension candidates. Maximal degree in co-relation 687. Up to 155 conditions per place. [2024-06-04 16:01:12,887 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 29 selfloop transitions, 9 changer transitions 0/42 dead transitions. [2024-06-04 16:01:12,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 42 transitions, 288 flow [2024-06-04 16:01:12,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 16:01:12,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 16:01:12,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 70 transitions. [2024-06-04 16:01:12,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-04 16:01:12,888 INFO L175 Difference]: Start difference. First operand has 47 places, 35 transitions, 192 flow. Second operand 4 states and 70 transitions. [2024-06-04 16:01:12,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 42 transitions, 288 flow [2024-06-04 16:01:12,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 42 transitions, 270 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-04 16:01:12,890 INFO L231 Difference]: Finished difference. Result has 48 places, 37 transitions, 212 flow [2024-06-04 16:01:12,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=212, PETRI_PLACES=48, PETRI_TRANSITIONS=37} [2024-06-04 16:01:12,891 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 19 predicate places. [2024-06-04 16:01:12,891 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 37 transitions, 212 flow [2024-06-04 16:01:12,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:12,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:01:12,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:01:12,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-04 16:01:12,892 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:01:12,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:01:12,892 INFO L85 PathProgramCache]: Analyzing trace with hash 123255072, now seen corresponding path program 2 times [2024-06-04 16:01:12,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:01:12,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191569845] [2024-06-04 16:01:12,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:01:12,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:01:12,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:01:13,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:01:13,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:01:13,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191569845] [2024-06-04 16:01:13,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191569845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:01:13,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:01:13,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 16:01:13,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061124317] [2024-06-04 16:01:13,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:01:13,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 16:01:13,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:01:13,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 16:01:13,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-04 16:01:13,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-04 16:01:13,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 37 transitions, 212 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:13,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:01:13,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-04 16:01:13,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:01:13,183 INFO L124 PetriNetUnfolderBase]: 95/204 cut-off events. [2024-06-04 16:01:13,184 INFO L125 PetriNetUnfolderBase]: For 589/591 co-relation queries the response was YES. [2024-06-04 16:01:13,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 740 conditions, 204 events. 95/204 cut-off events. For 589/591 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 735 event pairs, 30 based on Foata normal form. 3/206 useless extension candidates. Maximal degree in co-relation 712. Up to 149 conditions per place. [2024-06-04 16:01:13,185 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 30 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2024-06-04 16:01:13,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 45 transitions, 320 flow [2024-06-04 16:01:13,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 16:01:13,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 16:01:13,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 83 transitions. [2024-06-04 16:01:13,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5533333333333333 [2024-06-04 16:01:13,187 INFO L175 Difference]: Start difference. First operand has 48 places, 37 transitions, 212 flow. Second operand 5 states and 83 transitions. [2024-06-04 16:01:13,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 45 transitions, 320 flow [2024-06-04 16:01:13,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 45 transitions, 300 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-04 16:01:13,190 INFO L231 Difference]: Finished difference. Result has 51 places, 39 transitions, 235 flow [2024-06-04 16:01:13,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=235, PETRI_PLACES=51, PETRI_TRANSITIONS=39} [2024-06-04 16:01:13,192 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 22 predicate places. [2024-06-04 16:01:13,193 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 39 transitions, 235 flow [2024-06-04 16:01:13,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:13,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:01:13,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:01:13,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-04 16:01:13,193 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:01:13,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:01:13,194 INFO L85 PathProgramCache]: Analyzing trace with hash 123264000, now seen corresponding path program 1 times [2024-06-04 16:01:13,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:01:13,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123804102] [2024-06-04 16:01:13,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:01:13,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:01:13,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:01:13,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:01:13,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:01:13,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123804102] [2024-06-04 16:01:13,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123804102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:01:13,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:01:13,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 16:01:13,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813800687] [2024-06-04 16:01:13,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:01:13,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 16:01:13,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:01:13,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 16:01:13,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-04 16:01:13,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-04 16:01:13,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 39 transitions, 235 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:13,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:01:13,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-04 16:01:13,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:01:13,509 INFO L124 PetriNetUnfolderBase]: 92/198 cut-off events. [2024-06-04 16:01:13,509 INFO L125 PetriNetUnfolderBase]: For 583/583 co-relation queries the response was YES. [2024-06-04 16:01:13,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 728 conditions, 198 events. 92/198 cut-off events. For 583/583 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 694 event pairs, 22 based on Foata normal form. 2/199 useless extension candidates. Maximal degree in co-relation 699. Up to 158 conditions per place. [2024-06-04 16:01:13,511 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 37 selfloop transitions, 6 changer transitions 0/47 dead transitions. [2024-06-04 16:01:13,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 47 transitions, 341 flow [2024-06-04 16:01:13,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 16:01:13,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 16:01:13,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2024-06-04 16:01:13,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-06-04 16:01:13,513 INFO L175 Difference]: Start difference. First operand has 51 places, 39 transitions, 235 flow. Second operand 5 states and 80 transitions. [2024-06-04 16:01:13,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 47 transitions, 341 flow [2024-06-04 16:01:13,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 47 transitions, 316 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-04 16:01:13,516 INFO L231 Difference]: Finished difference. Result has 53 places, 39 transitions, 226 flow [2024-06-04 16:01:13,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=226, PETRI_PLACES=53, PETRI_TRANSITIONS=39} [2024-06-04 16:01:13,517 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 24 predicate places. [2024-06-04 16:01:13,517 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 39 transitions, 226 flow [2024-06-04 16:01:13,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:13,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:01:13,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:01:13,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-04 16:01:13,518 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:01:13,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:01:13,519 INFO L85 PathProgramCache]: Analyzing trace with hash 964356720, now seen corresponding path program 1 times [2024-06-04 16:01:13,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:01:13,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92638652] [2024-06-04 16:01:13,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:01:13,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:01:13,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:01:13,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:01:13,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:01:13,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92638652] [2024-06-04 16:01:13,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92638652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:01:13,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:01:13,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 16:01:13,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224662119] [2024-06-04 16:01:13,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:01:13,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 16:01:13,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:01:13,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 16:01:13,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-04 16:01:13,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-04 16:01:13,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 39 transitions, 226 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:13,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:01:13,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-04 16:01:13,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:01:13,871 INFO L124 PetriNetUnfolderBase]: 100/214 cut-off events. [2024-06-04 16:01:13,872 INFO L125 PetriNetUnfolderBase]: For 700/702 co-relation queries the response was YES. [2024-06-04 16:01:13,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 793 conditions, 214 events. 100/214 cut-off events. For 700/702 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 791 event pairs, 28 based on Foata normal form. 3/216 useless extension candidates. Maximal degree in co-relation 763. Up to 136 conditions per place. [2024-06-04 16:01:13,873 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 33 selfloop transitions, 19 changer transitions 0/56 dead transitions. [2024-06-04 16:01:13,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 56 transitions, 400 flow [2024-06-04 16:01:13,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 16:01:13,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 16:01:13,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-04 16:01:13,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5291666666666667 [2024-06-04 16:01:13,875 INFO L175 Difference]: Start difference. First operand has 53 places, 39 transitions, 226 flow. Second operand 8 states and 127 transitions. [2024-06-04 16:01:13,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 56 transitions, 400 flow [2024-06-04 16:01:13,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 56 transitions, 384 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-04 16:01:13,878 INFO L231 Difference]: Finished difference. Result has 57 places, 43 transitions, 281 flow [2024-06-04 16:01:13,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=281, PETRI_PLACES=57, PETRI_TRANSITIONS=43} [2024-06-04 16:01:13,879 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 28 predicate places. [2024-06-04 16:01:13,881 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 43 transitions, 281 flow [2024-06-04 16:01:13,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:13,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:01:13,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:01:13,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-04 16:01:13,882 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:01:13,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:01:13,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1332992752, now seen corresponding path program 2 times [2024-06-04 16:01:13,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:01:13,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504171744] [2024-06-04 16:01:13,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:01:13,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:01:13,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:01:14,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:01:14,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:01:14,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504171744] [2024-06-04 16:01:14,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504171744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:01:14,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:01:14,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 16:01:14,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917505808] [2024-06-04 16:01:14,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:01:14,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 16:01:14,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:01:14,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 16:01:14,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 16:01:14,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-04 16:01:14,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 43 transitions, 281 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:14,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:01:14,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-04 16:01:14,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:01:14,214 INFO L124 PetriNetUnfolderBase]: 103/221 cut-off events. [2024-06-04 16:01:14,215 INFO L125 PetriNetUnfolderBase]: For 936/938 co-relation queries the response was YES. [2024-06-04 16:01:14,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 867 conditions, 221 events. 103/221 cut-off events. For 936/938 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 836 event pairs, 28 based on Foata normal form. 3/223 useless extension candidates. Maximal degree in co-relation 837. Up to 146 conditions per place. [2024-06-04 16:01:14,216 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 35 selfloop transitions, 17 changer transitions 0/56 dead transitions. [2024-06-04 16:01:14,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 56 transitions, 445 flow [2024-06-04 16:01:14,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 16:01:14,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 16:01:14,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 102 transitions. [2024-06-04 16:01:14,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-06-04 16:01:14,217 INFO L175 Difference]: Start difference. First operand has 57 places, 43 transitions, 281 flow. Second operand 6 states and 102 transitions. [2024-06-04 16:01:14,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 56 transitions, 445 flow [2024-06-04 16:01:14,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 56 transitions, 413 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-04 16:01:14,221 INFO L231 Difference]: Finished difference. Result has 59 places, 45 transitions, 304 flow [2024-06-04 16:01:14,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=304, PETRI_PLACES=59, PETRI_TRANSITIONS=45} [2024-06-04 16:01:14,221 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 30 predicate places. [2024-06-04 16:01:14,221 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 45 transitions, 304 flow [2024-06-04 16:01:14,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:14,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:01:14,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:01:14,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-04 16:01:14,222 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:01:14,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:01:14,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1332998332, now seen corresponding path program 3 times [2024-06-04 16:01:14,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:01:14,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707891948] [2024-06-04 16:01:14,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:01:14,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:01:14,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:01:14,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:01:14,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:01:14,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707891948] [2024-06-04 16:01:14,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707891948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:01:14,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:01:14,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 16:01:14,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52477135] [2024-06-04 16:01:14,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:01:14,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 16:01:14,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:01:14,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 16:01:14,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 16:01:14,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-04 16:01:14,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 45 transitions, 304 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:14,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:01:14,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-04 16:01:14,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:01:14,551 INFO L124 PetriNetUnfolderBase]: 101/218 cut-off events. [2024-06-04 16:01:14,552 INFO L125 PetriNetUnfolderBase]: For 1037/1039 co-relation queries the response was YES. [2024-06-04 16:01:14,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 878 conditions, 218 events. 101/218 cut-off events. For 1037/1039 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 820 event pairs, 28 based on Foata normal form. 3/220 useless extension candidates. Maximal degree in co-relation 846. Up to 144 conditions per place. [2024-06-04 16:01:14,553 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 35 selfloop transitions, 17 changer transitions 0/56 dead transitions. [2024-06-04 16:01:14,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 56 transitions, 434 flow [2024-06-04 16:01:14,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 16:01:14,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 16:01:14,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-06-04 16:01:14,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5380952380952381 [2024-06-04 16:01:14,555 INFO L175 Difference]: Start difference. First operand has 59 places, 45 transitions, 304 flow. Second operand 7 states and 113 transitions. [2024-06-04 16:01:14,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 56 transitions, 434 flow [2024-06-04 16:01:14,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 56 transitions, 400 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-04 16:01:14,559 INFO L231 Difference]: Finished difference. Result has 63 places, 45 transitions, 309 flow [2024-06-04 16:01:14,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=309, PETRI_PLACES=63, PETRI_TRANSITIONS=45} [2024-06-04 16:01:14,560 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 34 predicate places. [2024-06-04 16:01:14,561 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 45 transitions, 309 flow [2024-06-04 16:01:14,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:14,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:01:14,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:01:14,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-04 16:01:14,561 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:01:14,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:01:14,562 INFO L85 PathProgramCache]: Analyzing trace with hash -474059682, now seen corresponding path program 4 times [2024-06-04 16:01:14,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:01:14,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493154494] [2024-06-04 16:01:14,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:01:14,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:01:14,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:01:14,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:01:14,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:01:14,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493154494] [2024-06-04 16:01:14,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493154494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:01:14,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:01:14,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 16:01:14,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684895888] [2024-06-04 16:01:14,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:01:14,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 16:01:14,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:01:14,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 16:01:14,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-04 16:01:14,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-04 16:01:14,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 45 transitions, 309 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:14,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:01:14,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-04 16:01:14,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:01:14,860 INFO L124 PetriNetUnfolderBase]: 99/215 cut-off events. [2024-06-04 16:01:14,860 INFO L125 PetriNetUnfolderBase]: For 1148/1150 co-relation queries the response was YES. [2024-06-04 16:01:14,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 872 conditions, 215 events. 99/215 cut-off events. For 1148/1150 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 817 event pairs, 28 based on Foata normal form. 3/217 useless extension candidates. Maximal degree in co-relation 839. Up to 135 conditions per place. [2024-06-04 16:01:14,862 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 34 selfloop transitions, 21 changer transitions 0/59 dead transitions. [2024-06-04 16:01:14,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 59 transitions, 463 flow [2024-06-04 16:01:14,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 16:01:14,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 16:01:14,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-04 16:01:14,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-06-04 16:01:14,863 INFO L175 Difference]: Start difference. First operand has 63 places, 45 transitions, 309 flow. Second operand 8 states and 126 transitions. [2024-06-04 16:01:14,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 59 transitions, 463 flow [2024-06-04 16:01:14,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 59 transitions, 417 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-04 16:01:14,867 INFO L231 Difference]: Finished difference. Result has 64 places, 47 transitions, 330 flow [2024-06-04 16:01:14,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=330, PETRI_PLACES=64, PETRI_TRANSITIONS=47} [2024-06-04 16:01:14,868 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 35 predicate places. [2024-06-04 16:01:14,868 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 47 transitions, 330 flow [2024-06-04 16:01:14,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:14,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:01:14,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:01:14,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-04 16:01:14,869 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:01:14,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:01:14,869 INFO L85 PathProgramCache]: Analyzing trace with hash -548590615, now seen corresponding path program 1 times [2024-06-04 16:01:14,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:01:14,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175520404] [2024-06-04 16:01:14,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:01:14,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:01:14,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:01:15,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:01:15,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:01:15,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175520404] [2024-06-04 16:01:15,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175520404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:01:15,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:01:15,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 16:01:15,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588252270] [2024-06-04 16:01:15,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:01:15,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 16:01:15,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:01:15,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 16:01:15,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 16:01:15,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-04 16:01:15,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 47 transitions, 330 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:15,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:01:15,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-04 16:01:15,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:01:15,197 INFO L124 PetriNetUnfolderBase]: 103/223 cut-off events. [2024-06-04 16:01:15,198 INFO L125 PetriNetUnfolderBase]: For 1347/1349 co-relation queries the response was YES. [2024-06-04 16:01:15,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 922 conditions, 223 events. 103/223 cut-off events. For 1347/1349 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 840 event pairs, 15 based on Foata normal form. 4/226 useless extension candidates. Maximal degree in co-relation 888. Up to 121 conditions per place. [2024-06-04 16:01:15,200 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 44 selfloop transitions, 13 changer transitions 0/61 dead transitions. [2024-06-04 16:01:15,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 61 transitions, 504 flow [2024-06-04 16:01:15,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 16:01:15,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 16:01:15,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-06-04 16:01:15,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-06-04 16:01:15,201 INFO L175 Difference]: Start difference. First operand has 64 places, 47 transitions, 330 flow. Second operand 6 states and 99 transitions. [2024-06-04 16:01:15,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 61 transitions, 504 flow [2024-06-04 16:01:15,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 61 transitions, 453 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-04 16:01:15,206 INFO L231 Difference]: Finished difference. Result has 64 places, 48 transitions, 315 flow [2024-06-04 16:01:15,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=315, PETRI_PLACES=64, PETRI_TRANSITIONS=48} [2024-06-04 16:01:15,207 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 35 predicate places. [2024-06-04 16:01:15,207 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 48 transitions, 315 flow [2024-06-04 16:01:15,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:15,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:01:15,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:01:15,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-04 16:01:15,208 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:01:15,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:01:15,209 INFO L85 PathProgramCache]: Analyzing trace with hash -548472505, now seen corresponding path program 2 times [2024-06-04 16:01:15,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:01:15,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427590572] [2024-06-04 16:01:15,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:01:15,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:01:15,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:01:15,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:01:15,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:01:15,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427590572] [2024-06-04 16:01:15,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427590572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:01:15,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:01:15,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 16:01:15,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064050629] [2024-06-04 16:01:15,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:01:15,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 16:01:15,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:01:15,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 16:01:15,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-04 16:01:15,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-04 16:01:15,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 48 transitions, 315 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:15,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:01:15,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-04 16:01:15,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:01:15,511 INFO L124 PetriNetUnfolderBase]: 107/231 cut-off events. [2024-06-04 16:01:15,511 INFO L125 PetriNetUnfolderBase]: For 1483/1485 co-relation queries the response was YES. [2024-06-04 16:01:15,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 949 conditions, 231 events. 107/231 cut-off events. For 1483/1485 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 887 event pairs, 26 based on Foata normal form. 4/234 useless extension candidates. Maximal degree in co-relation 914. Up to 160 conditions per place. [2024-06-04 16:01:15,513 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 44 selfloop transitions, 12 changer transitions 0/60 dead transitions. [2024-06-04 16:01:15,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 60 transitions, 461 flow [2024-06-04 16:01:15,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 16:01:15,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 16:01:15,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-06-04 16:01:15,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-06-04 16:01:15,514 INFO L175 Difference]: Start difference. First operand has 64 places, 48 transitions, 315 flow. Second operand 6 states and 99 transitions. [2024-06-04 16:01:15,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 60 transitions, 461 flow [2024-06-04 16:01:15,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 60 transitions, 433 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-04 16:01:15,519 INFO L231 Difference]: Finished difference. Result has 67 places, 49 transitions, 325 flow [2024-06-04 16:01:15,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=325, PETRI_PLACES=67, PETRI_TRANSITIONS=49} [2024-06-04 16:01:15,519 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 38 predicate places. [2024-06-04 16:01:15,519 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 49 transitions, 325 flow [2024-06-04 16:01:15,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:15,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:01:15,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:01:15,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-04 16:01:15,520 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:01:15,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:01:15,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1626902009, now seen corresponding path program 3 times [2024-06-04 16:01:15,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:01:15,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249816241] [2024-06-04 16:01:15,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:01:15,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:01:15,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:01:15,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:01:15,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:01:15,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249816241] [2024-06-04 16:01:15,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249816241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:01:15,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:01:15,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 16:01:15,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366426845] [2024-06-04 16:01:15,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:01:15,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 16:01:15,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:01:15,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 16:01:15,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-04 16:01:15,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-04 16:01:15,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 49 transitions, 325 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:15,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:01:15,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-04 16:01:15,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:01:15,857 INFO L124 PetriNetUnfolderBase]: 104/226 cut-off events. [2024-06-04 16:01:15,857 INFO L125 PetriNetUnfolderBase]: For 1490/1492 co-relation queries the response was YES. [2024-06-04 16:01:15,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 913 conditions, 226 events. 104/226 cut-off events. For 1490/1492 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 860 event pairs, 14 based on Foata normal form. 4/229 useless extension candidates. Maximal degree in co-relation 877. Up to 140 conditions per place. [2024-06-04 16:01:15,859 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 44 selfloop transitions, 11 changer transitions 0/59 dead transitions. [2024-06-04 16:01:15,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 59 transitions, 459 flow [2024-06-04 16:01:15,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 16:01:15,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 16:01:15,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 86 transitions. [2024-06-04 16:01:15,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5733333333333334 [2024-06-04 16:01:15,860 INFO L175 Difference]: Start difference. First operand has 67 places, 49 transitions, 325 flow. Second operand 5 states and 86 transitions. [2024-06-04 16:01:15,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 59 transitions, 459 flow [2024-06-04 16:01:15,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 59 transitions, 423 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-04 16:01:15,864 INFO L231 Difference]: Finished difference. Result has 67 places, 49 transitions, 317 flow [2024-06-04 16:01:15,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=317, PETRI_PLACES=67, PETRI_TRANSITIONS=49} [2024-06-04 16:01:15,865 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 38 predicate places. [2024-06-04 16:01:15,865 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 49 transitions, 317 flow [2024-06-04 16:01:15,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:15,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:01:15,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:01:15,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-04 16:01:15,866 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:01:15,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:01:15,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1626717311, now seen corresponding path program 1 times [2024-06-04 16:01:15,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:01:15,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804299156] [2024-06-04 16:01:15,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:01:15,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:01:15,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:01:16,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:01:16,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:01:16,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804299156] [2024-06-04 16:01:16,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804299156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:01:16,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:01:16,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 16:01:16,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569011188] [2024-06-04 16:01:16,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:01:16,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 16:01:16,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:01:16,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 16:01:16,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 16:01:16,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-04 16:01:16,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 49 transitions, 317 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:16,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:01:16,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-04 16:01:16,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:01:16,221 INFO L124 PetriNetUnfolderBase]: 108/234 cut-off events. [2024-06-04 16:01:16,221 INFO L125 PetriNetUnfolderBase]: For 1701/1703 co-relation queries the response was YES. [2024-06-04 16:01:16,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 930 conditions, 234 events. 108/234 cut-off events. For 1701/1703 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 907 event pairs, 25 based on Foata normal form. 4/237 useless extension candidates. Maximal degree in co-relation 894. Up to 166 conditions per place. [2024-06-04 16:01:16,223 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 42 selfloop transitions, 11 changer transitions 0/57 dead transitions. [2024-06-04 16:01:16,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 57 transitions, 447 flow [2024-06-04 16:01:16,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 16:01:16,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 16:01:16,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 83 transitions. [2024-06-04 16:01:16,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5533333333333333 [2024-06-04 16:01:16,224 INFO L175 Difference]: Start difference. First operand has 67 places, 49 transitions, 317 flow. Second operand 5 states and 83 transitions. [2024-06-04 16:01:16,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 57 transitions, 447 flow [2024-06-04 16:01:16,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 57 transitions, 417 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-04 16:01:16,230 INFO L231 Difference]: Finished difference. Result has 67 places, 50 transitions, 325 flow [2024-06-04 16:01:16,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=325, PETRI_PLACES=67, PETRI_TRANSITIONS=50} [2024-06-04 16:01:16,231 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 38 predicate places. [2024-06-04 16:01:16,231 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 50 transitions, 325 flow [2024-06-04 16:01:16,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:16,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:01:16,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:01:16,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-04 16:01:16,231 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:01:16,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:01:16,232 INFO L85 PathProgramCache]: Analyzing trace with hash -2032585937, now seen corresponding path program 2 times [2024-06-04 16:01:16,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:01:16,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660560776] [2024-06-04 16:01:16,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:01:16,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:01:16,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:01:16,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:01:16,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:01:16,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660560776] [2024-06-04 16:01:16,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660560776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:01:16,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:01:16,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 16:01:16,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129939094] [2024-06-04 16:01:16,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:01:16,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 16:01:16,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:01:16,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 16:01:16,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-04 16:01:16,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-04 16:01:16,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 50 transitions, 325 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:16,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:01:16,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-04 16:01:16,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:01:16,519 INFO L124 PetriNetUnfolderBase]: 112/242 cut-off events. [2024-06-04 16:01:16,519 INFO L125 PetriNetUnfolderBase]: For 1647/1649 co-relation queries the response was YES. [2024-06-04 16:01:16,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 963 conditions, 242 events. 112/242 cut-off events. For 1647/1649 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 949 event pairs, 27 based on Foata normal form. 4/245 useless extension candidates. Maximal degree in co-relation 927. Up to 177 conditions per place. [2024-06-04 16:01:16,521 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 43 selfloop transitions, 12 changer transitions 0/59 dead transitions. [2024-06-04 16:01:16,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 59 transitions, 463 flow [2024-06-04 16:01:16,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 16:01:16,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 16:01:16,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2024-06-04 16:01:16,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-06-04 16:01:16,523 INFO L175 Difference]: Start difference. First operand has 67 places, 50 transitions, 325 flow. Second operand 6 states and 96 transitions. [2024-06-04 16:01:16,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 59 transitions, 463 flow [2024-06-04 16:01:16,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 59 transitions, 435 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-04 16:01:16,526 INFO L231 Difference]: Finished difference. Result has 69 places, 51 transitions, 337 flow [2024-06-04 16:01:16,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=337, PETRI_PLACES=69, PETRI_TRANSITIONS=51} [2024-06-04 16:01:16,527 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 40 predicate places. [2024-06-04 16:01:16,527 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 51 transitions, 337 flow [2024-06-04 16:01:16,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:16,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:01:16,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:01:16,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-04 16:01:16,527 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:01:16,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:01:16,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1802370017, now seen corresponding path program 3 times [2024-06-04 16:01:16,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:01:16,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100549537] [2024-06-04 16:01:16,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:01:16,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:01:16,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:01:16,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:01:16,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:01:16,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100549537] [2024-06-04 16:01:16,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100549537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:01:16,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:01:16,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 16:01:16,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262525249] [2024-06-04 16:01:16,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:01:16,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 16:01:16,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:01:16,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 16:01:16,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 16:01:16,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-04 16:01:16,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 51 transitions, 337 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:16,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:01:16,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-04 16:01:16,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:01:16,842 INFO L124 PetriNetUnfolderBase]: 109/237 cut-off events. [2024-06-04 16:01:16,842 INFO L125 PetriNetUnfolderBase]: For 1440/1442 co-relation queries the response was YES. [2024-06-04 16:01:16,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 911 conditions, 237 events. 109/237 cut-off events. For 1440/1442 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 930 event pairs, 24 based on Foata normal form. 4/240 useless extension candidates. Maximal degree in co-relation 875. Up to 152 conditions per place. [2024-06-04 16:01:16,844 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 42 selfloop transitions, 14 changer transitions 0/60 dead transitions. [2024-06-04 16:01:16,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 60 transitions, 469 flow [2024-06-04 16:01:16,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 16:01:16,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 16:01:16,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 95 transitions. [2024-06-04 16:01:16,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-04 16:01:16,845 INFO L175 Difference]: Start difference. First operand has 69 places, 51 transitions, 337 flow. Second operand 6 states and 95 transitions. [2024-06-04 16:01:16,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 60 transitions, 469 flow [2024-06-04 16:01:16,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 60 transitions, 439 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-04 16:01:16,850 INFO L231 Difference]: Finished difference. Result has 71 places, 51 transitions, 339 flow [2024-06-04 16:01:16,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=339, PETRI_PLACES=71, PETRI_TRANSITIONS=51} [2024-06-04 16:01:16,850 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 42 predicate places. [2024-06-04 16:01:16,850 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 51 transitions, 339 flow [2024-06-04 16:01:16,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:16,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:01:16,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:01:16,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-04 16:01:16,852 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:01:16,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:01:16,852 INFO L85 PathProgramCache]: Analyzing trace with hash 88656337, now seen corresponding path program 1 times [2024-06-04 16:01:16,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:01:16,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391504118] [2024-06-04 16:01:16,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:01:16,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:01:16,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:01:17,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:01:17,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:01:17,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391504118] [2024-06-04 16:01:17,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391504118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:01:17,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:01:17,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 16:01:17,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964190659] [2024-06-04 16:01:17,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:01:17,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 16:01:17,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:01:17,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 16:01:17,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-04 16:01:17,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-04 16:01:17,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 51 transitions, 339 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:17,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:01:17,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-04 16:01:17,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:01:17,188 INFO L124 PetriNetUnfolderBase]: 139/311 cut-off events. [2024-06-04 16:01:17,189 INFO L125 PetriNetUnfolderBase]: For 3111/3113 co-relation queries the response was YES. [2024-06-04 16:01:17,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1246 conditions, 311 events. 139/311 cut-off events. For 3111/3113 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1380 event pairs, 38 based on Foata normal form. 8/318 useless extension candidates. Maximal degree in co-relation 1209. Up to 96 conditions per place. [2024-06-04 16:01:17,190 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 38 selfloop transitions, 19 changer transitions 12/73 dead transitions. [2024-06-04 16:01:17,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 73 transitions, 579 flow [2024-06-04 16:01:17,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:01:17,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:01:17,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-04 16:01:17,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5296296296296297 [2024-06-04 16:01:17,193 INFO L175 Difference]: Start difference. First operand has 71 places, 51 transitions, 339 flow. Second operand 9 states and 143 transitions. [2024-06-04 16:01:17,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 73 transitions, 579 flow [2024-06-04 16:01:17,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 73 transitions, 543 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-04 16:01:17,202 INFO L231 Difference]: Finished difference. Result has 76 places, 48 transitions, 322 flow [2024-06-04 16:01:17,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=322, PETRI_PLACES=76, PETRI_TRANSITIONS=48} [2024-06-04 16:01:17,203 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 47 predicate places. [2024-06-04 16:01:17,203 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 48 transitions, 322 flow [2024-06-04 16:01:17,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:17,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:01:17,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:01:17,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-04 16:01:17,204 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:01:17,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:01:17,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1828370805, now seen corresponding path program 2 times [2024-06-04 16:01:17,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:01:17,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492102286] [2024-06-04 16:01:17,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:01:17,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:01:17,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:01:17,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:01:17,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:01:17,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492102286] [2024-06-04 16:01:17,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492102286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:01:17,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:01:17,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 16:01:17,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182812728] [2024-06-04 16:01:17,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:01:17,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 16:01:17,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:01:17,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 16:01:17,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-04 16:01:17,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-04 16:01:17,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 48 transitions, 322 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:17,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:01:17,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-04 16:01:17,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:01:17,545 INFO L124 PetriNetUnfolderBase]: 145/323 cut-off events. [2024-06-04 16:01:17,545 INFO L125 PetriNetUnfolderBase]: For 4584/4586 co-relation queries the response was YES. [2024-06-04 16:01:17,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1414 conditions, 323 events. 145/323 cut-off events. For 4584/4586 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1478 event pairs, 48 based on Foata normal form. 8/330 useless extension candidates. Maximal degree in co-relation 1376. Up to 159 conditions per place. [2024-06-04 16:01:17,547 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 38 selfloop transitions, 19 changer transitions 6/67 dead transitions. [2024-06-04 16:01:17,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 67 transitions, 544 flow [2024-06-04 16:01:17,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:01:17,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:01:17,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-04 16:01:17,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51 [2024-06-04 16:01:17,549 INFO L175 Difference]: Start difference. First operand has 76 places, 48 transitions, 322 flow. Second operand 10 states and 153 transitions. [2024-06-04 16:01:17,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 67 transitions, 544 flow [2024-06-04 16:01:17,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 67 transitions, 506 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-04 16:01:17,554 INFO L231 Difference]: Finished difference. Result has 75 places, 46 transitions, 316 flow [2024-06-04 16:01:17,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=316, PETRI_PLACES=75, PETRI_TRANSITIONS=46} [2024-06-04 16:01:17,554 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 46 predicate places. [2024-06-04 16:01:17,554 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 46 transitions, 316 flow [2024-06-04 16:01:17,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:17,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:01:17,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:01:17,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-04 16:01:17,555 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:01:17,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:01:17,556 INFO L85 PathProgramCache]: Analyzing trace with hash 177369967, now seen corresponding path program 3 times [2024-06-04 16:01:17,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:01:17,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002731098] [2024-06-04 16:01:17,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:01:17,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:01:17,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:01:17,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:01:17,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:01:17,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002731098] [2024-06-04 16:01:17,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002731098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:01:17,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:01:17,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 16:01:17,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525375728] [2024-06-04 16:01:17,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:01:17,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 16:01:17,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:01:17,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 16:01:17,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-04 16:01:17,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-04 16:01:17,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 46 transitions, 316 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:17,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:01:17,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-04 16:01:17,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:01:17,857 INFO L124 PetriNetUnfolderBase]: 121/271 cut-off events. [2024-06-04 16:01:17,857 INFO L125 PetriNetUnfolderBase]: For 3331/3333 co-relation queries the response was YES. [2024-06-04 16:01:17,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1135 conditions, 271 events. 121/271 cut-off events. For 3331/3333 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1163 event pairs, 40 based on Foata normal form. 10/280 useless extension candidates. Maximal degree in co-relation 1098. Up to 159 conditions per place. [2024-06-04 16:01:17,859 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 27 selfloop transitions, 14 changer transitions 15/60 dead transitions. [2024-06-04 16:01:17,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 60 transitions, 472 flow [2024-06-04 16:01:17,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:01:17,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:01:17,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-06-04 16:01:17,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5037037037037037 [2024-06-04 16:01:17,860 INFO L175 Difference]: Start difference. First operand has 75 places, 46 transitions, 316 flow. Second operand 9 states and 136 transitions. [2024-06-04 16:01:17,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 60 transitions, 472 flow [2024-06-04 16:01:17,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 60 transitions, 432 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-04 16:01:17,864 INFO L231 Difference]: Finished difference. Result has 73 places, 41 transitions, 268 flow [2024-06-04 16:01:17,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=268, PETRI_PLACES=73, PETRI_TRANSITIONS=41} [2024-06-04 16:01:17,864 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 44 predicate places. [2024-06-04 16:01:17,865 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 41 transitions, 268 flow [2024-06-04 16:01:17,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:17,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:01:17,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:01:17,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-04 16:01:17,865 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:01:17,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:01:17,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1105793711, now seen corresponding path program 4 times [2024-06-04 16:01:17,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:01:17,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914662302] [2024-06-04 16:01:17,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:01:17,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:01:17,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:01:18,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:01:18,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:01:18,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914662302] [2024-06-04 16:01:18,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914662302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:01:18,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:01:18,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 16:01:18,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851369500] [2024-06-04 16:01:18,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:01:18,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 16:01:18,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:01:18,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 16:01:18,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 16:01:18,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-04 16:01:18,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 41 transitions, 268 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:18,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:01:18,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-04 16:01:18,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:01:18,173 INFO L124 PetriNetUnfolderBase]: 111/247 cut-off events. [2024-06-04 16:01:18,173 INFO L125 PetriNetUnfolderBase]: For 2939/2943 co-relation queries the response was YES. [2024-06-04 16:01:18,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1018 conditions, 247 events. 111/247 cut-off events. For 2939/2943 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1046 event pairs, 42 based on Foata normal form. 12/258 useless extension candidates. Maximal degree in co-relation 982. Up to 155 conditions per place. [2024-06-04 16:01:18,175 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 26 selfloop transitions, 11 changer transitions 9/50 dead transitions. [2024-06-04 16:01:18,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 50 transitions, 392 flow [2024-06-04 16:01:18,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 16:01:18,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 16:01:18,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 108 transitions. [2024-06-04 16:01:18,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-06-04 16:01:18,176 INFO L175 Difference]: Start difference. First operand has 73 places, 41 transitions, 268 flow. Second operand 7 states and 108 transitions. [2024-06-04 16:01:18,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 50 transitions, 392 flow [2024-06-04 16:01:18,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 50 transitions, 354 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-04 16:01:18,179 INFO L231 Difference]: Finished difference. Result has 64 places, 38 transitions, 236 flow [2024-06-04 16:01:18,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=236, PETRI_PLACES=64, PETRI_TRANSITIONS=38} [2024-06-04 16:01:18,180 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 35 predicate places. [2024-06-04 16:01:18,180 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 38 transitions, 236 flow [2024-06-04 16:01:18,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:18,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:01:18,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:01:18,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-04 16:01:18,181 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:01:18,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:01:18,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1111363853, now seen corresponding path program 1 times [2024-06-04 16:01:18,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:01:18,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779051252] [2024-06-04 16:01:18,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:01:18,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:01:18,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:01:18,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:01:18,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:01:18,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779051252] [2024-06-04 16:01:18,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779051252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:01:18,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:01:18,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 16:01:18,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15442653] [2024-06-04 16:01:18,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:01:18,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 16:01:18,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:01:18,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 16:01:18,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 16:01:18,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-04 16:01:18,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 38 transitions, 236 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:18,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:01:18,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-04 16:01:18,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:01:18,492 INFO L124 PetriNetUnfolderBase]: 99/225 cut-off events. [2024-06-04 16:01:18,492 INFO L125 PetriNetUnfolderBase]: For 2090/2090 co-relation queries the response was YES. [2024-06-04 16:01:18,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 873 conditions, 225 events. 99/225 cut-off events. For 2090/2090 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 896 event pairs, 41 based on Foata normal form. 8/232 useless extension candidates. Maximal degree in co-relation 840. Up to 138 conditions per place. [2024-06-04 16:01:18,493 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 26 selfloop transitions, 8 changer transitions 9/47 dead transitions. [2024-06-04 16:01:18,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 47 transitions, 354 flow [2024-06-04 16:01:18,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 16:01:18,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 16:01:18,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 106 transitions. [2024-06-04 16:01:18,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5047619047619047 [2024-06-04 16:01:18,495 INFO L175 Difference]: Start difference. First operand has 64 places, 38 transitions, 236 flow. Second operand 7 states and 106 transitions. [2024-06-04 16:01:18,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 47 transitions, 354 flow [2024-06-04 16:01:18,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 47 transitions, 322 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-04 16:01:18,498 INFO L231 Difference]: Finished difference. Result has 61 places, 35 transitions, 206 flow [2024-06-04 16:01:18,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=206, PETRI_PLACES=61, PETRI_TRANSITIONS=35} [2024-06-04 16:01:18,498 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 32 predicate places. [2024-06-04 16:01:18,498 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 35 transitions, 206 flow [2024-06-04 16:01:18,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:18,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:01:18,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:01:18,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-04 16:01:18,499 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:01:18,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:01:18,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1111371293, now seen corresponding path program 2 times [2024-06-04 16:01:18,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:01:18,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439727340] [2024-06-04 16:01:18,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:01:18,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:01:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:01:18,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:01:18,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:01:18,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439727340] [2024-06-04 16:01:18,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439727340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:01:18,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:01:18,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 16:01:18,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293178703] [2024-06-04 16:01:18,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:01:18,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 16:01:18,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:01:18,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 16:01:18,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-04 16:01:18,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-04 16:01:18,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 35 transitions, 206 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:18,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:01:18,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-04 16:01:18,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:01:18,823 INFO L124 PetriNetUnfolderBase]: 90/212 cut-off events. [2024-06-04 16:01:18,823 INFO L125 PetriNetUnfolderBase]: For 1424/1424 co-relation queries the response was YES. [2024-06-04 16:01:18,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 767 conditions, 212 events. 90/212 cut-off events. For 1424/1424 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 839 event pairs, 35 based on Foata normal form. 6/217 useless extension candidates. Maximal degree in co-relation 736. Up to 122 conditions per place. [2024-06-04 16:01:18,824 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 26 selfloop transitions, 7 changer transitions 7/44 dead transitions. [2024-06-04 16:01:18,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 44 transitions, 308 flow [2024-06-04 16:01:18,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 16:01:18,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 16:01:18,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 104 transitions. [2024-06-04 16:01:18,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49523809523809526 [2024-06-04 16:01:18,826 INFO L175 Difference]: Start difference. First operand has 61 places, 35 transitions, 206 flow. Second operand 7 states and 104 transitions. [2024-06-04 16:01:18,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 44 transitions, 308 flow [2024-06-04 16:01:18,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 44 transitions, 288 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-04 16:01:18,828 INFO L231 Difference]: Finished difference. Result has 59 places, 32 transitions, 181 flow [2024-06-04 16:01:18,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=181, PETRI_PLACES=59, PETRI_TRANSITIONS=32} [2024-06-04 16:01:18,828 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 30 predicate places. [2024-06-04 16:01:18,828 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 32 transitions, 181 flow [2024-06-04 16:01:18,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:18,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:01:18,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:01:18,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-04 16:01:18,829 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:01:18,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:01:18,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1105645841, now seen corresponding path program 5 times [2024-06-04 16:01:18,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:01:18,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655679466] [2024-06-04 16:01:18,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:01:18,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:01:18,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:01:19,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:01:19,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:01:19,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655679466] [2024-06-04 16:01:19,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655679466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:01:19,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:01:19,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 16:01:19,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212877149] [2024-06-04 16:01:19,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:01:19,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 16:01:19,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:01:19,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 16:01:19,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-04 16:01:19,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-04 16:01:19,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 32 transitions, 181 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:19,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:01:19,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-04 16:01:19,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:01:19,138 INFO L124 PetriNetUnfolderBase]: 68/162 cut-off events. [2024-06-04 16:01:19,138 INFO L125 PetriNetUnfolderBase]: For 846/846 co-relation queries the response was YES. [2024-06-04 16:01:19,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 562 conditions, 162 events. 68/162 cut-off events. For 846/846 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 554 event pairs, 24 based on Foata normal form. 6/167 useless extension candidates. Maximal degree in co-relation 532. Up to 85 conditions per place. [2024-06-04 16:01:19,139 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 22 selfloop transitions, 4 changer transitions 11/41 dead transitions. [2024-06-04 16:01:19,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 41 transitions, 281 flow [2024-06-04 16:01:19,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 16:01:19,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 16:01:19,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 103 transitions. [2024-06-04 16:01:19,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49047619047619045 [2024-06-04 16:01:19,140 INFO L175 Difference]: Start difference. First operand has 59 places, 32 transitions, 181 flow. Second operand 7 states and 103 transitions. [2024-06-04 16:01:19,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 41 transitions, 281 flow [2024-06-04 16:01:19,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 41 transitions, 254 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-04 16:01:19,142 INFO L231 Difference]: Finished difference. Result has 55 places, 28 transitions, 141 flow [2024-06-04 16:01:19,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=141, PETRI_PLACES=55, PETRI_TRANSITIONS=28} [2024-06-04 16:01:19,142 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 26 predicate places. [2024-06-04 16:01:19,143 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 28 transitions, 141 flow [2024-06-04 16:01:19,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:19,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:01:19,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:01:19,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-04 16:01:19,143 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:01:19,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:01:19,144 INFO L85 PathProgramCache]: Analyzing trace with hash -48092067, now seen corresponding path program 3 times [2024-06-04 16:01:19,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:01:19,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808835826] [2024-06-04 16:01:19,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:01:19,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:01:19,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:01:19,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:01:19,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:01:19,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808835826] [2024-06-04 16:01:19,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808835826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:01:19,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:01:19,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 16:01:19,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068589905] [2024-06-04 16:01:19,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:01:19,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 16:01:19,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:01:19,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 16:01:19,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-04 16:01:19,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-04 16:01:19,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 28 transitions, 141 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:19,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:01:19,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-04 16:01:19,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:01:19,470 INFO L124 PetriNetUnfolderBase]: 69/165 cut-off events. [2024-06-04 16:01:19,470 INFO L125 PetriNetUnfolderBase]: For 1094/1094 co-relation queries the response was YES. [2024-06-04 16:01:19,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 586 conditions, 165 events. 69/165 cut-off events. For 1094/1094 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 592 event pairs, 28 based on Foata normal form. 6/171 useless extension candidates. Maximal degree in co-relation 558. Up to 56 conditions per place. [2024-06-04 16:01:19,471 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 24 selfloop transitions, 7 changer transitions 6/41 dead transitions. [2024-06-04 16:01:19,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 41 transitions, 269 flow [2024-06-04 16:01:19,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 16:01:19,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 16:01:19,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 118 transitions. [2024-06-04 16:01:19,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49166666666666664 [2024-06-04 16:01:19,472 INFO L175 Difference]: Start difference. First operand has 55 places, 28 transitions, 141 flow. Second operand 8 states and 118 transitions. [2024-06-04 16:01:19,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 41 transitions, 269 flow [2024-06-04 16:01:19,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 41 transitions, 232 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-04 16:01:19,474 INFO L231 Difference]: Finished difference. Result has 47 places, 26 transitions, 121 flow [2024-06-04 16:01:19,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=121, PETRI_PLACES=47, PETRI_TRANSITIONS=26} [2024-06-04 16:01:19,474 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 18 predicate places. [2024-06-04 16:01:19,474 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 26 transitions, 121 flow [2024-06-04 16:01:19,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:19,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:01:19,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:01:19,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-04 16:01:19,475 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:01:19,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:01:19,475 INFO L85 PathProgramCache]: Analyzing trace with hash -48099507, now seen corresponding path program 4 times [2024-06-04 16:01:19,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:01:19,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641022092] [2024-06-04 16:01:19,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:01:19,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:01:19,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:01:19,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:01:19,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:01:19,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641022092] [2024-06-04 16:01:19,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641022092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:01:19,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:01:19,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 16:01:19,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880862699] [2024-06-04 16:01:19,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:01:19,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 16:01:19,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:01:19,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 16:01:19,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-04 16:01:19,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-04 16:01:19,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 26 transitions, 121 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:19,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:01:19,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-04 16:01:19,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:01:19,761 INFO L124 PetriNetUnfolderBase]: 45/113 cut-off events. [2024-06-04 16:01:19,761 INFO L125 PetriNetUnfolderBase]: For 510/510 co-relation queries the response was YES. [2024-06-04 16:01:19,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 113 events. 45/113 cut-off events. For 510/510 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 327 event pairs, 20 based on Foata normal form. 8/121 useless extension candidates. Maximal degree in co-relation 326. Up to 52 conditions per place. [2024-06-04 16:01:19,762 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 16 selfloop transitions, 3 changer transitions 11/34 dead transitions. [2024-06-04 16:01:19,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 34 transitions, 199 flow [2024-06-04 16:01:19,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 16:01:19,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 16:01:19,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 101 transitions. [2024-06-04 16:01:19,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48095238095238096 [2024-06-04 16:01:19,763 INFO L175 Difference]: Start difference. First operand has 47 places, 26 transitions, 121 flow. Second operand 7 states and 101 transitions. [2024-06-04 16:01:19,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 34 transitions, 199 flow [2024-06-04 16:01:19,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 34 transitions, 183 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-04 16:01:19,766 INFO L231 Difference]: Finished difference. Result has 45 places, 21 transitions, 82 flow [2024-06-04 16:01:19,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=82, PETRI_PLACES=45, PETRI_TRANSITIONS=21} [2024-06-04 16:01:19,769 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 16 predicate places. [2024-06-04 16:01:19,769 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 21 transitions, 82 flow [2024-06-04 16:01:19,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:19,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:01:19,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:01:19,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-04 16:01:19,769 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:01:19,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:01:19,770 INFO L85 PathProgramCache]: Analyzing trace with hash -38895297, now seen corresponding path program 5 times [2024-06-04 16:01:19,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:01:19,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288873123] [2024-06-04 16:01:19,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:01:19,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:01:19,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:01:19,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:01:19,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:01:19,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288873123] [2024-06-04 16:01:19,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288873123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:01:19,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:01:19,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 16:01:19,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477362682] [2024-06-04 16:01:19,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:01:19,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 16:01:19,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:01:19,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 16:01:19,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-04 16:01:19,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-04 16:01:19,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 21 transitions, 82 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:19,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:01:19,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-04 16:01:19,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:01:20,040 INFO L124 PetriNetUnfolderBase]: 20/60 cut-off events. [2024-06-04 16:01:20,041 INFO L125 PetriNetUnfolderBase]: For 168/168 co-relation queries the response was YES. [2024-06-04 16:01:20,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 60 events. 20/60 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 92 event pairs, 1 based on Foata normal form. 6/66 useless extension candidates. Maximal degree in co-relation 143. Up to 24 conditions per place. [2024-06-04 16:01:20,041 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2024-06-04 16:01:20,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 26 transitions, 122 flow [2024-06-04 16:01:20,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 16:01:20,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 16:01:20,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 93 transitions. [2024-06-04 16:01:20,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44285714285714284 [2024-06-04 16:01:20,042 INFO L175 Difference]: Start difference. First operand has 45 places, 21 transitions, 82 flow. Second operand 7 states and 93 transitions. [2024-06-04 16:01:20,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 26 transitions, 122 flow [2024-06-04 16:01:20,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 26 transitions, 102 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-04 16:01:20,043 INFO L231 Difference]: Finished difference. Result has 34 places, 0 transitions, 0 flow [2024-06-04 16:01:20,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=34, PETRI_TRANSITIONS=0} [2024-06-04 16:01:20,045 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 5 predicate places. [2024-06-04 16:01:20,045 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 0 transitions, 0 flow [2024-06-04 16:01:20,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:20,047 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-04 16:01:20,047 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-04 16:01:20,047 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-04 16:01:20,048 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-04 16:01:20,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-04 16:01:20,048 INFO L445 BasicCegarLoop]: Path program histogram: [5, 5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2024-06-04 16:01:20,050 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-04 16:01:20,050 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-04 16:01:20,053 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-04 16:01:20,053 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-04 16:01:20,054 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.06 04:01:20 BasicIcfg [2024-06-04 16:01:20,054 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-04 16:01:20,054 INFO L158 Benchmark]: Toolchain (without parser) took 11143.53ms. Allocated memory was 167.8MB in the beginning and 352.3MB in the end (delta: 184.5MB). Free memory was 131.1MB in the beginning and 149.9MB in the end (delta: -18.8MB). Peak memory consumption was 164.5MB. Max. memory is 16.1GB. [2024-06-04 16:01:20,054 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 117.4MB. Free memory was 78.2MB in the beginning and 78.2MB in the end (delta: 67.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 16:01:20,054 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 167.8MB. Free memory is still 135.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 16:01:20,055 INFO L158 Benchmark]: CACSL2BoogieTranslator took 500.02ms. Allocated memory is still 167.8MB. Free memory was 131.1MB in the beginning and 103.0MB in the end (delta: 28.1MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-06-04 16:01:20,055 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.11ms. Allocated memory is still 167.8MB. Free memory was 103.0MB in the beginning and 100.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-04 16:01:20,055 INFO L158 Benchmark]: Boogie Preprocessor took 54.51ms. Allocated memory is still 167.8MB. Free memory was 100.5MB in the beginning and 98.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-04 16:01:20,056 INFO L158 Benchmark]: RCFGBuilder took 415.01ms. Allocated memory is still 167.8MB. Free memory was 98.4MB in the beginning and 69.1MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-06-04 16:01:20,056 INFO L158 Benchmark]: TraceAbstraction took 10094.73ms. Allocated memory was 167.8MB in the beginning and 352.3MB in the end (delta: 184.5MB). Free memory was 68.2MB in the beginning and 149.9MB in the end (delta: -81.7MB). Peak memory consumption was 101.6MB. Max. memory is 16.1GB. [2024-06-04 16:01:20,057 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 117.4MB. Free memory was 78.2MB in the beginning and 78.2MB in the end (delta: 67.2kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.16ms. Allocated memory is still 167.8MB. Free memory is still 135.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 500.02ms. Allocated memory is still 167.8MB. Free memory was 131.1MB in the beginning and 103.0MB in the end (delta: 28.1MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.11ms. Allocated memory is still 167.8MB. Free memory was 103.0MB in the beginning and 100.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.51ms. Allocated memory is still 167.8MB. Free memory was 100.5MB in the beginning and 98.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 415.01ms. Allocated memory is still 167.8MB. Free memory was 98.4MB in the beginning and 69.1MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 10094.73ms. Allocated memory was 167.8MB in the beginning and 352.3MB in the end (delta: 184.5MB). Free memory was 68.2MB in the beginning and 149.9MB in the end (delta: -81.7MB). Peak memory consumption was 101.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 763]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 764]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 47 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 10.0s, OverallIterations: 29, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1439 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1106 mSDsluCounter, 296 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 163 mSDsCounter, 169 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4246 IncrementalHoareTripleChecker+Invalid, 4415 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 169 mSolverCounterUnsat, 133 mSDtfsCounter, 4246 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 205 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=339occurred in iteration=19, InterpolantAutomatonStates: 180, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 434 NumberOfCodeBlocks, 434 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 405 ConstructedInterpolants, 0 QuantifiedInterpolants, 4164 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 29 InterpolantComputations, 29 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-04 16:01:20,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE