./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/thin002_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/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cde23df1 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/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i ./goblint.2024-05-21_14-57-05.files/mutex-meet/thin002_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-cde23df-m [2024-06-14 14:08:26,226 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 14:08:26,295 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 14:08:26,300 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 14:08:26,300 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 14:08:26,325 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 14:08:26,325 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 14:08:26,325 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 14:08:26,326 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 14:08:26,330 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 14:08:26,330 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 14:08:26,330 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 14:08:26,331 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 14:08:26,332 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 14:08:26,333 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 14:08:26,333 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 14:08:26,333 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 14:08:26,333 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 14:08:26,333 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 14:08:26,334 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 14:08:26,334 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 14:08:26,334 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 14:08:26,334 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 14:08:26,335 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 14:08:26,335 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 14:08:26,335 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 14:08:26,335 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 14:08:26,335 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 14:08:26,336 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 14:08:26,336 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 14:08:26,337 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 14:08:26,337 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 14:08:26,337 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 14:08:26,337 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 14:08:26,338 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 14:08:26,338 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 14:08:26,338 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 14:08:26,338 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 14:08:26,338 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 14:08:26,338 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 14:08:26,339 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 14:08:26,339 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 14:08:26,339 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 14:08:26,339 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 14:08:26,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 14:08:26,556 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 14:08:26,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 14:08:26,558 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 14:08:26,561 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 14:08:26,561 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml [2024-06-14 14:08:26,711 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 14:08:26,712 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 14:08:26,712 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-06-14 14:08:27,665 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 14:08:27,858 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 14:08:27,858 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-06-14 14:08:27,874 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/607daa780/8b96a7edc3464390905c4323eaca9e60/FLAG7c29d3f00 [2024-06-14 14:08:27,884 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/607daa780/8b96a7edc3464390905c4323eaca9e60 [2024-06-14 14:08:27,886 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 14:08:27,887 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 14:08:27,888 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 14:08:27,888 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 14:08:27,892 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 14:08:27,892 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 02:08:26" (1/2) ... [2024-06-14 14:08:27,893 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@516dabea and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:08:27, skipping insertion in model container [2024-06-14 14:08:27,893 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 02:08:26" (1/2) ... [2024-06-14 14:08:27,894 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6051544f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:08:27, skipping insertion in model container [2024-06-14 14:08:27,894 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 02:08:27" (2/2) ... [2024-06-14 14:08:27,894 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@516dabea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:08:27, skipping insertion in model container [2024-06-14 14:08:27,895 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 02:08:27" (2/2) ... [2024-06-14 14:08:27,895 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 14:08:27,970 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 14:08:27,971 INFO L97 edCorrectnessWitness]: Location invariant before [L805-L805] ((((((((((! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 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 )__unbuffered_p2_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )a >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z >= 0LL) && (1LL - (long long )x) + (long long )y >= 0LL) && (1LL - (long long )x) + (long long )z >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p0_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p2_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p3_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )a >= 0LL) && (long long )__unbuffered_cnt + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x >= 0LL) && (long long )__unbuffered_cnt + (long long )y >= 0LL) && (long long )__unbuffered_cnt + (long long )z >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p2_EAX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p3_EAX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )a >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )z >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )__unbuffered_p2_EAX >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )__unbuffered_p3_EAX >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )__unbuffered_p3_EAX >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )a >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )a >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )z >= 0LL) && (long long )a + (long long )main$tmp_guard1 >= 0LL) && (long long )a + (long long )x >= 0LL) && (long long )a + (long long )y >= 0LL) && (long long )a + (long long )z >= 0LL) && (long long )main$tmp_guard1 + (long long )x >= 0LL) && (long long )main$tmp_guard1 + (long long )y >= 0LL) && (long long )main$tmp_guard1 + (long long )z >= 0LL) && (long long )x + (long long )y >= 0LL) && (long long )x + (long long )z >= 0LL) && (long long )y + (long long )z >= 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 )__unbuffered_p2_EAX) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )x >= 0LL) && (1LL + (long long )a) - (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_cnt)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((((((((((((((((((((((((0 <= __unbuffered_cnt && 0 <= __unbuffered_p0_EAX) && 0 <= __unbuffered_p1_EAX) && 0 <= __unbuffered_p2_EAX) && 0 <= __unbuffered_p3_EAX) && 0 <= a) && 0 <= x) && 0 <= y) && 0 <= z) && __unbuffered_p0_EAX <= 1) && __unbuffered_p1_EAX <= 1) && __unbuffered_p2_EAX <= 1) && __unbuffered_p3_EAX <= 1) && a <= 1) && x <= 1) && y <= 1) && z <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1))) [2024-06-14 14:08:27,971 INFO L97 edCorrectnessWitness]: Location invariant before [L803-L803] ((((((((((! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 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 )__unbuffered_p2_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )a >= 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 )__unbuffered_p1_EAX) + (long long )z >= 0LL) && (1LL - (long long )x) + (long long )y >= 0LL) && (1LL - (long long )x) + (long long )z >= 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 )__unbuffered_p2_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p3_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )a >= 0LL) && (long long )__unbuffered_cnt + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x >= 0LL) && (long long )__unbuffered_cnt + (long long )y >= 0LL) && (long long )__unbuffered_cnt + (long long )z >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p2_EAX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p3_EAX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )a >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )z >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )__unbuffered_p2_EAX >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )__unbuffered_p3_EAX >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )__unbuffered_p3_EAX >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )a >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )a >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )z >= 0LL) && (long long )a + (long long )main$tmp_guard1 >= 0LL) && (long long )a + (long long )x >= 0LL) && (long long )a + (long long )y >= 0LL) && (long long )a + (long long )z >= 0LL) && (long long )main$tmp_guard1 + (long long )x >= 0LL) && (long long )main$tmp_guard1 + (long long )y >= 0LL) && (long long )main$tmp_guard1 + (long long )z >= 0LL) && (long long )x + (long long )y >= 0LL) && (long long )x + (long long )z >= 0LL) && (long long )y + (long long )z >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )x >= 0LL) && (1LL + (long long )a) - (long long )x >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((((((((((((((((((((((((0 <= __unbuffered_cnt && 0 <= __unbuffered_p0_EAX) && 0 <= __unbuffered_p1_EAX) && 0 <= __unbuffered_p2_EAX) && 0 <= __unbuffered_p3_EAX) && 0 <= a) && 0 <= x) && 0 <= y) && 0 <= z) && __unbuffered_p0_EAX <= 1) && __unbuffered_p1_EAX <= 1) && __unbuffered_p2_EAX <= 1) && __unbuffered_p3_EAX <= 1) && a <= 1) && x <= 1) && y <= 1) && z <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1))) [2024-06-14 14:08:27,972 INFO L97 edCorrectnessWitness]: Location invariant before [L807-L807] ((((((((((! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 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 )__unbuffered_p2_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )a >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z >= 0LL) && (1LL - (long long )x) + (long long )y >= 0LL) && (1LL - (long long )x) + (long long )z >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p0_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p2_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p3_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )a >= 0LL) && (long long )__unbuffered_cnt + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x >= 0LL) && (long long )__unbuffered_cnt + (long long )y >= 0LL) && (long long )__unbuffered_cnt + (long long )z >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p2_EAX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p3_EAX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )a >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )z >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )__unbuffered_p2_EAX >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )__unbuffered_p3_EAX >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )__unbuffered_p3_EAX >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )a >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )a >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )z >= 0LL) && (long long )a + (long long )main$tmp_guard1 >= 0LL) && (long long )a + (long long )x >= 0LL) && (long long )a + (long long )y >= 0LL) && (long long )a + (long long )z >= 0LL) && (long long )main$tmp_guard1 + (long long )x >= 0LL) && (long long )main$tmp_guard1 + (long long )y >= 0LL) && (long long )main$tmp_guard1 + (long long )z >= 0LL) && (long long )x + (long long )y >= 0LL) && (long long )x + (long long )z >= 0LL) && (long long )y + (long long )z >= 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 )__unbuffered_p2_EAX) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )x >= 0LL) && (1LL + (long long )a) - (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_cnt)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((((((((((((((((((((((((0 <= __unbuffered_cnt && 0 <= __unbuffered_p0_EAX) && 0 <= __unbuffered_p1_EAX) && 0 <= __unbuffered_p2_EAX) && 0 <= __unbuffered_p3_EAX) && 0 <= a) && 0 <= x) && 0 <= y) && 0 <= z) && __unbuffered_p0_EAX <= 1) && __unbuffered_p1_EAX <= 1) && __unbuffered_p2_EAX <= 1) && __unbuffered_p3_EAX <= 1) && a <= 1) && x <= 1) && y <= 1) && z <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1))) [2024-06-14 14:08:27,972 INFO L97 edCorrectnessWitness]: Location invariant before [L808-L808] ((((((((((! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 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 )__unbuffered_p2_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )a >= 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 )__unbuffered_p1_EAX) + (long long )z >= 0LL) && (1LL - (long long )x) + (long long )y >= 0LL) && (1LL - (long long )x) + (long long )z >= 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 )__unbuffered_p2_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p3_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )a >= 0LL) && (long long )__unbuffered_cnt + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x >= 0LL) && (long long )__unbuffered_cnt + (long long )y >= 0LL) && (long long )__unbuffered_cnt + (long long )z >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p2_EAX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p3_EAX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )a >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )z >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )__unbuffered_p2_EAX >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )__unbuffered_p3_EAX >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )__unbuffered_p3_EAX >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )a >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )a >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )z >= 0LL) && (long long )a + (long long )main$tmp_guard1 >= 0LL) && (long long )a + (long long )x >= 0LL) && (long long )a + (long long )y >= 0LL) && (long long )a + (long long )z >= 0LL) && (long long )main$tmp_guard1 + (long long )x >= 0LL) && (long long )main$tmp_guard1 + (long long )y >= 0LL) && (long long )main$tmp_guard1 + (long long )z >= 0LL) && (long long )x + (long long )y >= 0LL) && (long long )x + (long long )z >= 0LL) && (long long )y + (long long )z >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )x >= 0LL) && (1LL + (long long )a) - (long long )x >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((((((((((((((((((((((((0 <= __unbuffered_cnt && 0 <= __unbuffered_p0_EAX) && 0 <= __unbuffered_p1_EAX) && 0 <= __unbuffered_p2_EAX) && 0 <= __unbuffered_p3_EAX) && 0 <= a) && 0 <= x) && 0 <= y) && 0 <= z) && __unbuffered_p0_EAX <= 1) && __unbuffered_p1_EAX <= 1) && __unbuffered_p2_EAX <= 1) && __unbuffered_p3_EAX <= 1) && a <= 1) && x <= 1) && y <= 1) && z <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1))) [2024-06-14 14:08:27,972 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 14:08:27,973 INFO L106 edCorrectnessWitness]: ghost_update [L801-L801] multithreaded = 1; [2024-06-14 14:08:28,008 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 14:08:28,251 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 14:08:28,266 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 14:08:28,478 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 14:08:28,510 INFO L206 MainTranslator]: Completed translation [2024-06-14 14:08:28,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:08:28 WrapperNode [2024-06-14 14:08:28,510 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 14:08:28,511 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 14:08:28,511 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 14:08:28,511 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 14:08:28,517 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:08:28" (1/1) ... [2024-06-14 14:08:28,546 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:08:28" (1/1) ... [2024-06-14 14:08:28,587 INFO L138 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 77 [2024-06-14 14:08:28,587 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 14:08:28,588 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 14:08:28,588 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 14:08:28,590 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 14:08:28,597 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:08:28" (1/1) ... [2024-06-14 14:08:28,598 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:08:28" (1/1) ... [2024-06-14 14:08:28,600 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:08:28" (1/1) ... [2024-06-14 14:08:28,616 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]. [2024-06-14 14:08:28,616 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:08:28" (1/1) ... [2024-06-14 14:08:28,616 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:08:28" (1/1) ... [2024-06-14 14:08:28,625 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:08:28" (1/1) ... [2024-06-14 14:08:28,626 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:08:28" (1/1) ... [2024-06-14 14:08:28,628 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:08:28" (1/1) ... [2024-06-14 14:08:28,632 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:08:28" (1/1) ... [2024-06-14 14:08:28,635 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 14:08:28,636 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 14:08:28,636 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 14:08:28,636 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 14:08:28,636 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:08:28" (1/1) ... [2024-06-14 14:08:28,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 14:08:28,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 14:08:28,667 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) [2024-06-14 14:08:28,686 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 [2024-06-14 14:08:28,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 14:08:28,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 14:08:28,702 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-14 14:08:28,702 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-14 14:08:28,702 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-14 14:08:28,703 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-14 14:08:28,703 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-14 14:08:28,703 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-14 14:08:28,703 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-14 14:08:28,703 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-14 14:08:28,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 14:08:28,704 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 14:08:28,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 14:08:28,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 14:08:28,705 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 14:08:28,829 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 14:08:28,831 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 14:08:29,131 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 14:08:29,132 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 14:08:29,238 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 14:08:29,238 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 14:08:29,239 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 02:08:29 BoogieIcfgContainer [2024-06-14 14:08:29,239 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 14:08:29,240 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 14:08:29,240 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 14:08:29,242 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 14:08:29,243 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 02:08:26" (1/4) ... [2024-06-14 14:08:29,243 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c050b01 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 02:08:29, skipping insertion in model container [2024-06-14 14:08:29,243 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 02:08:27" (2/4) ... [2024-06-14 14:08:29,244 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c050b01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 02:08:29, skipping insertion in model container [2024-06-14 14:08:29,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:08:28" (3/4) ... [2024-06-14 14:08:29,244 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c050b01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 02:08:29, skipping insertion in model container [2024-06-14 14:08:29,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 02:08:29" (4/4) ... [2024-06-14 14:08:29,245 INFO L112 eAbstractionObserver]: Analyzing ICFG thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-06-14 14:08:29,257 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 14:08:29,257 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-14 14:08:29,257 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 14:08:29,301 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 14:08:29,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 52 transitions, 120 flow [2024-06-14 14:08:29,353 INFO L124 PetriNetUnfolderBase]: 0/48 cut-off events. [2024-06-14 14:08:29,353 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 14:08:29,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 0/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 81 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-14 14:08:29,355 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 52 transitions, 120 flow [2024-06-14 14:08:29,357 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 42 transitions, 96 flow [2024-06-14 14:08:29,363 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 14:08:29,367 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;@65a43546, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 14:08:29,368 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-14 14:08:29,370 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 14:08:29,370 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-14 14:08:29,371 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 14:08:29,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:08:29,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 14:08:29,371 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:08:29,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:08:29,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1238650552, now seen corresponding path program 1 times [2024-06-14 14:08:29,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:08:29,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580929440] [2024-06-14 14:08:29,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:08:29,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:08:29,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:08:30,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:08:30,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:08:30,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580929440] [2024-06-14 14:08:30,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580929440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:08:30,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:08:30,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 14:08:30,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586685979] [2024-06-14 14:08:30,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:08:30,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 14:08:30,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:08:30,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 14:08:30,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 14:08:30,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 52 [2024-06-14 14:08:30,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:08:30,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:08:30,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 52 [2024-06-14 14:08:30,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:08:30,924 INFO L124 PetriNetUnfolderBase]: 2723/4078 cut-off events. [2024-06-14 14:08:30,924 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2024-06-14 14:08:30,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8080 conditions, 4078 events. 2723/4078 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 22549 event pairs, 1898 based on Foata normal form. 1/3992 useless extension candidates. Maximal degree in co-relation 8064. Up to 3813 conditions per place. [2024-06-14 14:08:30,950 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 39 selfloop transitions, 5 changer transitions 0/56 dead transitions. [2024-06-14 14:08:30,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 56 transitions, 221 flow [2024-06-14 14:08:30,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 14:08:30,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 14:08:30,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2024-06-14 14:08:30,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6923076923076923 [2024-06-14 14:08:30,961 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 96 flow. Second operand 3 states and 108 transitions. [2024-06-14 14:08:30,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 56 transitions, 221 flow [2024-06-14 14:08:30,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 56 transitions, 214 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-14 14:08:30,968 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 131 flow [2024-06-14 14:08:30,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-06-14 14:08:30,972 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -1 predicate places. [2024-06-14 14:08:30,973 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 131 flow [2024-06-14 14:08:30,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:08:30,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:08:30,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:08:30,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 14:08:30,974 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:08:30,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:08:30,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1721547629, now seen corresponding path program 1 times [2024-06-14 14:08:30,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:08:30,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159565807] [2024-06-14 14:08:30,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:08:30,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:08:30,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:08:31,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:08:31,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:08:31,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159565807] [2024-06-14 14:08:31,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159565807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:08:31,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:08:31,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 14:08:31,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163408540] [2024-06-14 14:08:31,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:08:31,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 14:08:31,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:08:31,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 14:08:31,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-14 14:08:31,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2024-06-14 14:08:31,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 131 flow. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:08:31,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:08:31,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2024-06-14 14:08:31,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:08:32,360 INFO L124 PetriNetUnfolderBase]: 4389/6482 cut-off events. [2024-06-14 14:08:32,363 INFO L125 PetriNetUnfolderBase]: For 1055/1077 co-relation queries the response was YES. [2024-06-14 14:08:32,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14774 conditions, 6482 events. 4389/6482 cut-off events. For 1055/1077 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 36434 event pairs, 2308 based on Foata normal form. 10/6482 useless extension candidates. Maximal degree in co-relation 14759. Up to 6039 conditions per place. [2024-06-14 14:08:32,396 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 56 selfloop transitions, 9 changer transitions 0/75 dead transitions. [2024-06-14 14:08:32,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 75 transitions, 344 flow [2024-06-14 14:08:32,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 14:08:32,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 14:08:32,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2024-06-14 14:08:32,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6586538461538461 [2024-06-14 14:08:32,400 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 131 flow. Second operand 4 states and 137 transitions. [2024-06-14 14:08:32,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 75 transitions, 344 flow [2024-06-14 14:08:32,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 75 transitions, 336 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 14:08:32,403 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 202 flow [2024-06-14 14:08:32,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=202, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2024-06-14 14:08:32,404 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2024-06-14 14:08:32,405 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 202 flow [2024-06-14 14:08:32,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:08:32,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:08:32,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:08:32,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 14:08:32,408 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:08:32,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:08:32,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1846111926, now seen corresponding path program 1 times [2024-06-14 14:08:32,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:08:32,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102325880] [2024-06-14 14:08:32,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:08:32,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:08:32,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:08:32,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:08:32,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:08:32,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102325880] [2024-06-14 14:08:32,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102325880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:08:32,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:08:32,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 14:08:32,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515935192] [2024-06-14 14:08:32,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:08:32,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 14:08:32,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:08:32,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 14:08:32,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-14 14:08:33,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2024-06-14 14:08:33,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 202 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:08:33,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:08:33,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2024-06-14 14:08:33,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:08:33,728 INFO L124 PetriNetUnfolderBase]: 4373/6454 cut-off events. [2024-06-14 14:08:33,728 INFO L125 PetriNetUnfolderBase]: For 3049/3136 co-relation queries the response was YES. [2024-06-14 14:08:33,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16582 conditions, 6454 events. 4373/6454 cut-off events. For 3049/3136 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 36274 event pairs, 1831 based on Foata normal form. 32/6476 useless extension candidates. Maximal degree in co-relation 16564. Up to 5973 conditions per place. [2024-06-14 14:08:33,764 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 63 selfloop transitions, 12 changer transitions 0/85 dead transitions. [2024-06-14 14:08:33,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 85 transitions, 436 flow [2024-06-14 14:08:33,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 14:08:33,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 14:08:33,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 165 transitions. [2024-06-14 14:08:33,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6346153846153846 [2024-06-14 14:08:33,767 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 202 flow. Second operand 5 states and 165 transitions. [2024-06-14 14:08:33,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 85 transitions, 436 flow [2024-06-14 14:08:33,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 85 transitions, 432 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-14 14:08:33,770 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 248 flow [2024-06-14 14:08:33,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=248, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2024-06-14 14:08:33,771 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2024-06-14 14:08:33,771 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 248 flow [2024-06-14 14:08:33,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:08:33,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:08:33,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:08:33,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 14:08:33,772 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:08:33,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:08:33,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1305937115, now seen corresponding path program 1 times [2024-06-14 14:08:33,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:08:33,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148609454] [2024-06-14 14:08:33,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:08:33,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:08:33,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:08:34,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:08:34,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:08:34,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148609454] [2024-06-14 14:08:34,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148609454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:08:34,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:08:34,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 14:08:34,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703635137] [2024-06-14 14:08:34,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:08:34,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 14:08:34,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:08:34,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 14:08:34,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-14 14:08:34,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2024-06-14 14:08:34,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 248 flow. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:08:34,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:08:34,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2024-06-14 14:08:34,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:08:34,940 INFO L124 PetriNetUnfolderBase]: 4310/6335 cut-off events. [2024-06-14 14:08:34,940 INFO L125 PetriNetUnfolderBase]: For 5513/5523 co-relation queries the response was YES. [2024-06-14 14:08:34,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17800 conditions, 6335 events. 4310/6335 cut-off events. For 5513/5523 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 35990 event pairs, 2266 based on Foata normal form. 6/6330 useless extension candidates. Maximal degree in co-relation 17779. Up to 5934 conditions per place. [2024-06-14 14:08:34,978 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 63 selfloop transitions, 11 changer transitions 0/84 dead transitions. [2024-06-14 14:08:34,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 84 transitions, 500 flow [2024-06-14 14:08:34,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 14:08:34,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 14:08:34,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2024-06-14 14:08:34,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6346153846153846 [2024-06-14 14:08:34,980 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 248 flow. Second operand 4 states and 132 transitions. [2024-06-14 14:08:34,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 84 transitions, 500 flow [2024-06-14 14:08:34,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 84 transitions, 464 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-14 14:08:34,984 INFO L231 Difference]: Finished difference. Result has 64 places, 66 transitions, 325 flow [2024-06-14 14:08:34,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=325, PETRI_PLACES=64, PETRI_TRANSITIONS=66} [2024-06-14 14:08:34,985 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 9 predicate places. [2024-06-14 14:08:34,985 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 66 transitions, 325 flow [2024-06-14 14:08:34,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:08:34,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:08:34,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:08:34,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 14:08:34,985 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:08:34,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:08:34,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1413391936, now seen corresponding path program 1 times [2024-06-14 14:08:34,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:08:34,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81467884] [2024-06-14 14:08:34,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:08:34,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:08:35,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:08:35,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:08:35,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:08:35,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81467884] [2024-06-14 14:08:35,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81467884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:08:35,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:08:35,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 14:08:35,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818803072] [2024-06-14 14:08:35,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:08:35,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 14:08:35,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:08:35,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 14:08:35,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-14 14:08:35,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2024-06-14 14:08:35,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 66 transitions, 325 flow. Second operand has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:08:35,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:08:35,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2024-06-14 14:08:35,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:08:36,464 INFO L124 PetriNetUnfolderBase]: 5207/7677 cut-off events. [2024-06-14 14:08:36,464 INFO L125 PetriNetUnfolderBase]: For 11031/11297 co-relation queries the response was YES. [2024-06-14 14:08:36,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23683 conditions, 7677 events. 5207/7677 cut-off events. For 11031/11297 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 44253 event pairs, 2250 based on Foata normal form. 57/7672 useless extension candidates. Maximal degree in co-relation 23660. Up to 7050 conditions per place. [2024-06-14 14:08:36,507 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 68 selfloop transitions, 25 changer transitions 0/105 dead transitions. [2024-06-14 14:08:36,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 105 transitions, 665 flow [2024-06-14 14:08:36,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 14:08:36,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 14:08:36,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 169 transitions. [2024-06-14 14:08:36,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-06-14 14:08:36,509 INFO L175 Difference]: Start difference. First operand has 64 places, 66 transitions, 325 flow. Second operand 5 states and 169 transitions. [2024-06-14 14:08:36,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 105 transitions, 665 flow [2024-06-14 14:08:36,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 105 transitions, 657 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-14 14:08:36,518 INFO L231 Difference]: Finished difference. Result has 69 places, 74 transitions, 438 flow [2024-06-14 14:08:36,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=438, PETRI_PLACES=69, PETRI_TRANSITIONS=74} [2024-06-14 14:08:36,522 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 14 predicate places. [2024-06-14 14:08:36,522 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 74 transitions, 438 flow [2024-06-14 14:08:36,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:08:36,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:08:36,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:08:36,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 14:08:36,523 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:08:36,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:08:36,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1402172416, now seen corresponding path program 2 times [2024-06-14 14:08:36,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:08:36,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564683786] [2024-06-14 14:08:36,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:08:36,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:08:36,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:08:37,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:08:37,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:08:37,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564683786] [2024-06-14 14:08:37,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564683786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:08:37,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:08:37,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 14:08:37,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654227999] [2024-06-14 14:08:37,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:08:37,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 14:08:37,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:08:37,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 14:08:37,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-14 14:08:37,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2024-06-14 14:08:37,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 74 transitions, 438 flow. Second operand has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:08:37,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:08:37,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2024-06-14 14:08:37,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:08:37,871 INFO L124 PetriNetUnfolderBase]: 5198/7665 cut-off events. [2024-06-14 14:08:37,871 INFO L125 PetriNetUnfolderBase]: For 17236/17544 co-relation queries the response was YES. [2024-06-14 14:08:37,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26021 conditions, 7665 events. 5198/7665 cut-off events. For 17236/17544 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 44041 event pairs, 2250 based on Foata normal form. 65/7670 useless extension candidates. Maximal degree in co-relation 25995. Up to 7056 conditions per place. [2024-06-14 14:08:37,908 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 62 selfloop transitions, 21 changer transitions 0/95 dead transitions. [2024-06-14 14:08:37,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 95 transitions, 658 flow [2024-06-14 14:08:37,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 14:08:37,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 14:08:37,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2024-06-14 14:08:37,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6586538461538461 [2024-06-14 14:08:37,910 INFO L175 Difference]: Start difference. First operand has 69 places, 74 transitions, 438 flow. Second operand 4 states and 137 transitions. [2024-06-14 14:08:37,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 95 transitions, 658 flow [2024-06-14 14:08:37,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 95 transitions, 615 flow, removed 15 selfloop flow, removed 1 redundant places. [2024-06-14 14:08:37,922 INFO L231 Difference]: Finished difference. Result has 72 places, 74 transitions, 455 flow [2024-06-14 14:08:37,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=455, PETRI_PLACES=72, PETRI_TRANSITIONS=74} [2024-06-14 14:08:37,924 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 17 predicate places. [2024-06-14 14:08:37,924 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 74 transitions, 455 flow [2024-06-14 14:08:37,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:08:37,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:08:37,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:08:37,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 14:08:37,925 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:08:37,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:08:37,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1343067912, now seen corresponding path program 1 times [2024-06-14 14:08:37,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:08:37,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636241167] [2024-06-14 14:08:37,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:08:37,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:08:37,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:08:38,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:08:38,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:08:38,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636241167] [2024-06-14 14:08:38,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636241167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:08:38,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:08:38,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 14:08:38,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430176656] [2024-06-14 14:08:38,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:08:38,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 14:08:38,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:08:38,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 14:08:38,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-14 14:08:38,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2024-06-14 14:08:38,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 74 transitions, 455 flow. Second operand has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:08:38,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:08:38,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2024-06-14 14:08:38,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:08:39,077 INFO L124 PetriNetUnfolderBase]: 4317/6351 cut-off events. [2024-06-14 14:08:39,078 INFO L125 PetriNetUnfolderBase]: For 15941/15980 co-relation queries the response was YES. [2024-06-14 14:08:39,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22023 conditions, 6351 events. 4317/6351 cut-off events. For 15941/15980 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 36181 event pairs, 2074 based on Foata normal form. 19/6357 useless extension candidates. Maximal degree in co-relation 21995. Up to 5913 conditions per place. [2024-06-14 14:08:39,115 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 79 selfloop transitions, 14 changer transitions 0/103 dead transitions. [2024-06-14 14:08:39,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 103 transitions, 732 flow [2024-06-14 14:08:39,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 14:08:39,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 14:08:39,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2024-06-14 14:08:39,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6192307692307693 [2024-06-14 14:08:39,117 INFO L175 Difference]: Start difference. First operand has 72 places, 74 transitions, 455 flow. Second operand 5 states and 161 transitions. [2024-06-14 14:08:39,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 103 transitions, 732 flow [2024-06-14 14:08:39,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 103 transitions, 690 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-14 14:08:39,125 INFO L231 Difference]: Finished difference. Result has 74 places, 77 transitions, 479 flow [2024-06-14 14:08:39,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=479, PETRI_PLACES=74, PETRI_TRANSITIONS=77} [2024-06-14 14:08:39,125 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 19 predicate places. [2024-06-14 14:08:39,125 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 77 transitions, 479 flow [2024-06-14 14:08:39,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:08:39,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:08:39,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:08:39,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 14:08:39,126 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:08:39,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:08:39,126 INFO L85 PathProgramCache]: Analyzing trace with hash 152893862, now seen corresponding path program 1 times [2024-06-14 14:08:39,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:08:39,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73852951] [2024-06-14 14:08:39,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:08:39,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:08:39,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:08:39,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:08:39,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:08:39,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73852951] [2024-06-14 14:08:39,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73852951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:08:39,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:08:39,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 14:08:39,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184578314] [2024-06-14 14:08:39,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:08:39,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 14:08:39,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:08:39,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 14:08:39,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-14 14:08:39,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-14 14:08:39,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 77 transitions, 479 flow. Second operand has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:08:39,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:08:39,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-14 14:08:39,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:08:40,551 INFO L124 PetriNetUnfolderBase]: 5487/8006 cut-off events. [2024-06-14 14:08:40,552 INFO L125 PetriNetUnfolderBase]: For 24508/24685 co-relation queries the response was YES. [2024-06-14 14:08:40,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28818 conditions, 8006 events. 5487/8006 cut-off events. For 24508/24685 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 45276 event pairs, 2358 based on Foata normal form. 40/8021 useless extension candidates. Maximal degree in co-relation 28789. Up to 7366 conditions per place. [2024-06-14 14:08:40,602 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 98 selfloop transitions, 27 changer transitions 0/134 dead transitions. [2024-06-14 14:08:40,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 134 transitions, 999 flow [2024-06-14 14:08:40,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 14:08:40,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 14:08:40,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 195 transitions. [2024-06-14 14:08:40,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-06-14 14:08:40,604 INFO L175 Difference]: Start difference. First operand has 74 places, 77 transitions, 479 flow. Second operand 6 states and 195 transitions. [2024-06-14 14:08:40,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 134 transitions, 999 flow [2024-06-14 14:08:40,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 134 transitions, 959 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-14 14:08:40,619 INFO L231 Difference]: Finished difference. Result has 79 places, 94 transitions, 667 flow [2024-06-14 14:08:40,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=667, PETRI_PLACES=79, PETRI_TRANSITIONS=94} [2024-06-14 14:08:40,619 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 24 predicate places. [2024-06-14 14:08:40,619 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 94 transitions, 667 flow [2024-06-14 14:08:40,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:08:40,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:08:40,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:08:40,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 14:08:40,620 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:08:40,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:08:40,621 INFO L85 PathProgramCache]: Analyzing trace with hash -517664846, now seen corresponding path program 2 times [2024-06-14 14:08:40,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:08:40,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725886412] [2024-06-14 14:08:40,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:08:40,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:08:40,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:08:41,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:08:41,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:08:41,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725886412] [2024-06-14 14:08:41,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725886412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:08:41,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:08:41,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 14:08:41,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469933325] [2024-06-14 14:08:41,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:08:41,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 14:08:41,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:08:41,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 14:08:41,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 14:08:41,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-14 14:08:41,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 94 transitions, 667 flow. Second operand has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:08:41,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:08:41,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-14 14:08:41,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:08:42,077 INFO L124 PetriNetUnfolderBase]: 5509/8052 cut-off events. [2024-06-14 14:08:42,077 INFO L125 PetriNetUnfolderBase]: For 32038/32364 co-relation queries the response was YES. [2024-06-14 14:08:42,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31089 conditions, 8052 events. 5509/8052 cut-off events. For 32038/32364 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 45539 event pairs, 2336 based on Foata normal form. 81/8115 useless extension candidates. Maximal degree in co-relation 31057. Up to 7419 conditions per place. [2024-06-14 14:08:42,131 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 112 selfloop transitions, 26 changer transitions 0/147 dead transitions. [2024-06-14 14:08:42,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 147 transitions, 1168 flow [2024-06-14 14:08:42,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 14:08:42,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 14:08:42,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 222 transitions. [2024-06-14 14:08:42,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6098901098901099 [2024-06-14 14:08:42,133 INFO L175 Difference]: Start difference. First operand has 79 places, 94 transitions, 667 flow. Second operand 7 states and 222 transitions. [2024-06-14 14:08:42,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 147 transitions, 1168 flow [2024-06-14 14:08:42,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 147 transitions, 1114 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-06-14 14:08:42,156 INFO L231 Difference]: Finished difference. Result has 85 places, 100 transitions, 743 flow [2024-06-14 14:08:42,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=617, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=743, PETRI_PLACES=85, PETRI_TRANSITIONS=100} [2024-06-14 14:08:42,157 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 30 predicate places. [2024-06-14 14:08:42,157 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 100 transitions, 743 flow [2024-06-14 14:08:42,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:08:42,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:08:42,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:08:42,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 14:08:42,157 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:08:42,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:08:42,158 INFO L85 PathProgramCache]: Analyzing trace with hash -517670426, now seen corresponding path program 3 times [2024-06-14 14:08:42,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:08:42,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917216647] [2024-06-14 14:08:42,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:08:42,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:08:42,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:08:42,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:08:42,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:08:42,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917216647] [2024-06-14 14:08:42,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917216647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:08:42,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:08:42,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 14:08:42,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109837745] [2024-06-14 14:08:42,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:08:42,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 14:08:42,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:08:42,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 14:08:42,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 14:08:42,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-14 14:08:42,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 100 transitions, 743 flow. Second operand has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:08:42,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:08:42,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-14 14:08:42,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:08:43,543 INFO L124 PetriNetUnfolderBase]: 5500/8032 cut-off events. [2024-06-14 14:08:43,543 INFO L125 PetriNetUnfolderBase]: For 36452/36703 co-relation queries the response was YES. [2024-06-14 14:08:43,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31394 conditions, 8032 events. 5500/8032 cut-off events. For 36452/36703 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 45396 event pairs, 2358 based on Foata normal form. 65/8072 useless extension candidates. Maximal degree in co-relation 31360. Up to 7410 conditions per place. [2024-06-14 14:08:43,586 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 95 selfloop transitions, 25 changer transitions 0/129 dead transitions. [2024-06-14 14:08:43,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 129 transitions, 1060 flow [2024-06-14 14:08:43,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 14:08:43,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 14:08:43,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 164 transitions. [2024-06-14 14:08:43,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6307692307692307 [2024-06-14 14:08:43,588 INFO L175 Difference]: Start difference. First operand has 85 places, 100 transitions, 743 flow. Second operand 5 states and 164 transitions. [2024-06-14 14:08:43,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 129 transitions, 1060 flow [2024-06-14 14:08:43,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 129 transitions, 968 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-14 14:08:43,621 INFO L231 Difference]: Finished difference. Result has 86 places, 100 transitions, 712 flow [2024-06-14 14:08:43,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=651, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=712, PETRI_PLACES=86, PETRI_TRANSITIONS=100} [2024-06-14 14:08:43,623 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 31 predicate places. [2024-06-14 14:08:43,623 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 100 transitions, 712 flow [2024-06-14 14:08:43,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:08:43,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:08:43,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:08:43,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 14:08:43,625 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:08:43,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:08:43,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1709679874, now seen corresponding path program 1 times [2024-06-14 14:08:43,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:08:43,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353102328] [2024-06-14 14:08:43,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:08:43,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:08:43,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:08:44,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:08:44,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:08:44,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353102328] [2024-06-14 14:08:44,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353102328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:08:44,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:08:44,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 14:08:44,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386500211] [2024-06-14 14:08:44,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:08:44,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 14:08:44,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:08:44,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 14:08:44,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-14 14:08:44,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2024-06-14 14:08:44,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 100 transitions, 712 flow. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:08:44,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:08:44,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2024-06-14 14:08:44,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:08:44,905 INFO L124 PetriNetUnfolderBase]: 4998/7360 cut-off events. [2024-06-14 14:08:44,905 INFO L125 PetriNetUnfolderBase]: For 40838/40861 co-relation queries the response was YES. [2024-06-14 14:08:44,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29609 conditions, 7360 events. 4998/7360 cut-off events. For 40838/40861 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 42865 event pairs, 2477 based on Foata normal form. 27/7358 useless extension candidates. Maximal degree in co-relation 29574. Up to 6752 conditions per place. [2024-06-14 14:08:44,946 INFO L140 encePairwiseOnDemand]: 44/52 looper letters, 100 selfloop transitions, 14 changer transitions 0/128 dead transitions. [2024-06-14 14:08:44,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 128 transitions, 1088 flow [2024-06-14 14:08:44,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 14:08:44,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 14:08:44,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2024-06-14 14:08:44,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6153846153846154 [2024-06-14 14:08:44,948 INFO L175 Difference]: Start difference. First operand has 86 places, 100 transitions, 712 flow. Second operand 4 states and 128 transitions. [2024-06-14 14:08:44,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 128 transitions, 1088 flow [2024-06-14 14:08:44,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 128 transitions, 1032 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-14 14:08:44,976 INFO L231 Difference]: Finished difference. Result has 87 places, 113 transitions, 835 flow [2024-06-14 14:08:44,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=835, PETRI_PLACES=87, PETRI_TRANSITIONS=113} [2024-06-14 14:08:44,977 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 32 predicate places. [2024-06-14 14:08:44,977 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 113 transitions, 835 flow [2024-06-14 14:08:44,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:08:44,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:08:44,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:08:44,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 14:08:44,978 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:08:44,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:08:44,978 INFO L85 PathProgramCache]: Analyzing trace with hash 441882047, now seen corresponding path program 1 times [2024-06-14 14:08:44,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:08:44,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587546146] [2024-06-14 14:08:44,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:08:44,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:08:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:08:45,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:08:45,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:08:45,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587546146] [2024-06-14 14:08:45,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587546146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:08:45,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:08:45,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 14:08:45,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154652456] [2024-06-14 14:08:45,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:08:45,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 14:08:45,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:08:45,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 14:08:45,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 14:08:45,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2024-06-14 14:08:45,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 113 transitions, 835 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:08:45,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:08:45,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2024-06-14 14:08:45,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:08:46,489 INFO L124 PetriNetUnfolderBase]: 6100/8926 cut-off events. [2024-06-14 14:08:46,489 INFO L125 PetriNetUnfolderBase]: For 65148/65365 co-relation queries the response was YES. [2024-06-14 14:08:46,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39636 conditions, 8926 events. 6100/8926 cut-off events. For 65148/65365 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 52025 event pairs, 1808 based on Foata normal form. 62/8736 useless extension candidates. Maximal degree in co-relation 39599. Up to 7913 conditions per place. [2024-06-14 14:08:46,543 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 90 selfloop transitions, 49 changer transitions 0/159 dead transitions. [2024-06-14 14:08:46,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 159 transitions, 1345 flow [2024-06-14 14:08:46,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 14:08:46,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 14:08:46,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 199 transitions. [2024-06-14 14:08:46,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6378205128205128 [2024-06-14 14:08:46,547 INFO L175 Difference]: Start difference. First operand has 87 places, 113 transitions, 835 flow. Second operand 6 states and 199 transitions. [2024-06-14 14:08:46,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 159 transitions, 1345 flow [2024-06-14 14:08:46,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 159 transitions, 1335 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-06-14 14:08:46,607 INFO L231 Difference]: Finished difference. Result has 93 places, 119 transitions, 1007 flow [2024-06-14 14:08:46,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=825, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1007, PETRI_PLACES=93, PETRI_TRANSITIONS=119} [2024-06-14 14:08:46,608 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 38 predicate places. [2024-06-14 14:08:46,608 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 119 transitions, 1007 flow [2024-06-14 14:08:46,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:08:46,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:08:46,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:08:46,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 14:08:46,608 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:08:46,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:08:46,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1059941569, now seen corresponding path program 2 times [2024-06-14 14:08:46,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:08:46,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202943845] [2024-06-14 14:08:46,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:08:46,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:08:46,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:08:47,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:08:47,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:08:47,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202943845] [2024-06-14 14:08:47,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202943845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:08:47,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:08:47,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 14:08:47,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397039597] [2024-06-14 14:08:47,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:08:47,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 14:08:47,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:08:47,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 14:08:47,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-14 14:08:47,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2024-06-14 14:08:47,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 119 transitions, 1007 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:08:47,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:08:47,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2024-06-14 14:08:47,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:08:48,036 INFO L124 PetriNetUnfolderBase]: 6152/8994 cut-off events. [2024-06-14 14:08:48,037 INFO L125 PetriNetUnfolderBase]: For 82571/82865 co-relation queries the response was YES. [2024-06-14 14:08:48,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42498 conditions, 8994 events. 6152/8994 cut-off events. For 82571/82865 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 52385 event pairs, 2212 based on Foata normal form. 75/8805 useless extension candidates. Maximal degree in co-relation 42458. Up to 8117 conditions per place. [2024-06-14 14:08:48,098 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 93 selfloop transitions, 45 changer transitions 0/158 dead transitions. [2024-06-14 14:08:48,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 158 transitions, 1415 flow [2024-06-14 14:08:48,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 14:08:48,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 14:08:48,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 195 transitions. [2024-06-14 14:08:48,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-06-14 14:08:48,099 INFO L175 Difference]: Start difference. First operand has 93 places, 119 transitions, 1007 flow. Second operand 6 states and 195 transitions. [2024-06-14 14:08:48,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 158 transitions, 1415 flow [2024-06-14 14:08:48,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 158 transitions, 1331 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-06-14 14:08:48,177 INFO L231 Difference]: Finished difference. Result has 97 places, 122 transitions, 1070 flow [2024-06-14 14:08:48,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1070, PETRI_PLACES=97, PETRI_TRANSITIONS=122} [2024-06-14 14:08:48,178 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 42 predicate places. [2024-06-14 14:08:48,178 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 122 transitions, 1070 flow [2024-06-14 14:08:48,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:08:48,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:08:48,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:08:48,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 14:08:48,179 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:08:48,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:08:48,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1132082559, now seen corresponding path program 3 times [2024-06-14 14:08:48,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:08:48,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920209597] [2024-06-14 14:08:48,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:08:48,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:08:48,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:08:48,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:08:48,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:08:48,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920209597] [2024-06-14 14:08:48,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920209597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:08:48,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:08:48,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 14:08:48,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356034617] [2024-06-14 14:08:48,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:08:48,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 14:08:48,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:08:48,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 14:08:48,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-14 14:08:48,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2024-06-14 14:08:48,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 122 transitions, 1070 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:08:48,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:08:48,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2024-06-14 14:08:48,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:08:49,677 INFO L124 PetriNetUnfolderBase]: 6120/8959 cut-off events. [2024-06-14 14:08:49,678 INFO L125 PetriNetUnfolderBase]: For 90292/90580 co-relation queries the response was YES. [2024-06-14 14:08:49,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42932 conditions, 8959 events. 6120/8959 cut-off events. For 90292/90580 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 52219 event pairs, 1798 based on Foata normal form. 106/8808 useless extension candidates. Maximal degree in co-relation 42890. Up to 8047 conditions per place. [2024-06-14 14:08:49,729 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 90 selfloop transitions, 41 changer transitions 0/151 dead transitions. [2024-06-14 14:08:49,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 151 transitions, 1406 flow [2024-06-14 14:08:49,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 14:08:49,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 14:08:49,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 167 transitions. [2024-06-14 14:08:49,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6423076923076924 [2024-06-14 14:08:49,732 INFO L175 Difference]: Start difference. First operand has 97 places, 122 transitions, 1070 flow. Second operand 5 states and 167 transitions. [2024-06-14 14:08:49,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 151 transitions, 1406 flow [2024-06-14 14:08:49,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 151 transitions, 1289 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-14 14:08:49,798 INFO L231 Difference]: Finished difference. Result has 98 places, 122 transitions, 1051 flow [2024-06-14 14:08:49,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=953, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1051, PETRI_PLACES=98, PETRI_TRANSITIONS=122} [2024-06-14 14:08:49,798 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 43 predicate places. [2024-06-14 14:08:49,798 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 122 transitions, 1051 flow [2024-06-14 14:08:49,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:08:49,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:08:49,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:08:49,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 14:08:49,799 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:08:49,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:08:49,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1412985479, now seen corresponding path program 1 times [2024-06-14 14:08:49,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:08:49,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238525908] [2024-06-14 14:08:49,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:08:49,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:08:49,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:08:50,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:08:50,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:08:50,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238525908] [2024-06-14 14:08:50,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238525908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:08:50,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:08:50,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:08:50,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429989574] [2024-06-14 14:08:50,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:08:50,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:08:50,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:08:50,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:08:50,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:08:50,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-14 14:08:50,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 122 transitions, 1051 flow. Second operand has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:08:50,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:08:50,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-14 14:08:50,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:08:51,615 INFO L124 PetriNetUnfolderBase]: 6715/9793 cut-off events. [2024-06-14 14:08:51,615 INFO L125 PetriNetUnfolderBase]: For 94509/94826 co-relation queries the response was YES. [2024-06-14 14:08:51,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45993 conditions, 9793 events. 6715/9793 cut-off events. For 94509/94826 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 56812 event pairs, 1908 based on Foata normal form. 117/9859 useless extension candidates. Maximal degree in co-relation 45950. Up to 8482 conditions per place. [2024-06-14 14:08:51,686 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 135 selfloop transitions, 43 changer transitions 0/189 dead transitions. [2024-06-14 14:08:51,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 189 transitions, 1765 flow [2024-06-14 14:08:51,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 14:08:51,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 14:08:51,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 228 transitions. [2024-06-14 14:08:51,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6263736263736264 [2024-06-14 14:08:51,688 INFO L175 Difference]: Start difference. First operand has 98 places, 122 transitions, 1051 flow. Second operand 7 states and 228 transitions. [2024-06-14 14:08:51,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 189 transitions, 1765 flow [2024-06-14 14:08:51,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 189 transitions, 1658 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-14 14:08:51,784 INFO L231 Difference]: Finished difference. Result has 103 places, 133 transitions, 1191 flow [2024-06-14 14:08:51,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1191, PETRI_PLACES=103, PETRI_TRANSITIONS=133} [2024-06-14 14:08:51,785 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 48 predicate places. [2024-06-14 14:08:51,785 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 133 transitions, 1191 flow [2024-06-14 14:08:51,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:08:51,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:08:51,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:08:51,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 14:08:51,785 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:08:51,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:08:51,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1501551239, now seen corresponding path program 2 times [2024-06-14 14:08:51,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:08:51,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402233499] [2024-06-14 14:08:51,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:08:51,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:08:51,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:08:52,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:08:52,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:08:52,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402233499] [2024-06-14 14:08:52,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402233499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:08:52,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:08:52,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:08:52,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701574044] [2024-06-14 14:08:52,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:08:52,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:08:52,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:08:52,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:08:52,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:08:52,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-14 14:08:52,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 133 transitions, 1191 flow. Second operand has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:08:52,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:08:52,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-14 14:08:52,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:08:53,488 INFO L124 PetriNetUnfolderBase]: 6989/10199 cut-off events. [2024-06-14 14:08:53,488 INFO L125 PetriNetUnfolderBase]: For 112685/113054 co-relation queries the response was YES. [2024-06-14 14:08:53,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49946 conditions, 10199 events. 6989/10199 cut-off events. For 112685/113054 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 59624 event pairs, 2358 based on Foata normal form. 127/10275 useless extension candidates. Maximal degree in co-relation 49900. Up to 9096 conditions per place. [2024-06-14 14:08:53,563 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 141 selfloop transitions, 39 changer transitions 0/191 dead transitions. [2024-06-14 14:08:53,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 191 transitions, 1851 flow [2024-06-14 14:08:53,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 14:08:53,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 14:08:53,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 228 transitions. [2024-06-14 14:08:53,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6263736263736264 [2024-06-14 14:08:53,565 INFO L175 Difference]: Start difference. First operand has 103 places, 133 transitions, 1191 flow. Second operand 7 states and 228 transitions. [2024-06-14 14:08:53,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 191 transitions, 1851 flow [2024-06-14 14:08:53,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 191 transitions, 1792 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-14 14:08:53,678 INFO L231 Difference]: Finished difference. Result has 109 places, 138 transitions, 1297 flow [2024-06-14 14:08:53,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1132, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1297, PETRI_PLACES=109, PETRI_TRANSITIONS=138} [2024-06-14 14:08:53,679 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 54 predicate places. [2024-06-14 14:08:53,679 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 138 transitions, 1297 flow [2024-06-14 14:08:53,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:08:53,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:08:53,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:08:53,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 14:08:53,680 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:08:53,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:08:53,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1501699109, now seen corresponding path program 3 times [2024-06-14 14:08:53,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:08:53,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622671297] [2024-06-14 14:08:53,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:08:53,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:08:53,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:08:54,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:08:54,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:08:54,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622671297] [2024-06-14 14:08:54,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622671297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:08:54,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:08:54,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:08:54,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068851927] [2024-06-14 14:08:54,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:08:54,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:08:54,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:08:54,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:08:54,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:08:54,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-14 14:08:54,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 138 transitions, 1297 flow. Second operand has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:08:54,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:08:54,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-14 14:08:54,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:08:55,391 INFO L124 PetriNetUnfolderBase]: 6935/10121 cut-off events. [2024-06-14 14:08:55,392 INFO L125 PetriNetUnfolderBase]: For 122389/122760 co-relation queries the response was YES. [2024-06-14 14:08:55,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50417 conditions, 10121 events. 6935/10121 cut-off events. For 122389/122760 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 59036 event pairs, 2363 based on Foata normal form. 133/10203 useless extension candidates. Maximal degree in co-relation 50368. Up to 9216 conditions per place. [2024-06-14 14:08:55,463 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 139 selfloop transitions, 36 changer transitions 0/186 dead transitions. [2024-06-14 14:08:55,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 186 transitions, 1790 flow [2024-06-14 14:08:55,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 14:08:55,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 14:08:55,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 222 transitions. [2024-06-14 14:08:55,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6098901098901099 [2024-06-14 14:08:55,465 INFO L175 Difference]: Start difference. First operand has 109 places, 138 transitions, 1297 flow. Second operand 7 states and 222 transitions. [2024-06-14 14:08:55,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 186 transitions, 1790 flow [2024-06-14 14:08:55,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 186 transitions, 1721 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-14 14:08:55,628 INFO L231 Difference]: Finished difference. Result has 113 places, 139 transitions, 1324 flow [2024-06-14 14:08:55,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1230, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1324, PETRI_PLACES=113, PETRI_TRANSITIONS=139} [2024-06-14 14:08:55,629 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 58 predicate places. [2024-06-14 14:08:55,629 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 139 transitions, 1324 flow [2024-06-14 14:08:55,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:08:55,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:08:55,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:08:55,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 14:08:55,630 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:08:55,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:08:55,630 INFO L85 PathProgramCache]: Analyzing trace with hash 740332721, now seen corresponding path program 4 times [2024-06-14 14:08:55,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:08:55,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368305306] [2024-06-14 14:08:55,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:08:55,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:08:55,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:08:56,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:08:56,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:08:56,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368305306] [2024-06-14 14:08:56,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368305306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:08:56,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:08:56,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:08:56,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122951459] [2024-06-14 14:08:56,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:08:56,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:08:56,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:08:56,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:08:56,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:08:56,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-14 14:08:56,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 139 transitions, 1324 flow. Second operand has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:08:56,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:08:56,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-14 14:08:56,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:08:57,359 INFO L124 PetriNetUnfolderBase]: 6968/10192 cut-off events. [2024-06-14 14:08:57,359 INFO L125 PetriNetUnfolderBase]: For 131050/131427 co-relation queries the response was YES. [2024-06-14 14:08:57,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51083 conditions, 10192 events. 6968/10192 cut-off events. For 131050/131427 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 59535 event pairs, 2343 based on Foata normal form. 142/10293 useless extension candidates. Maximal degree in co-relation 51032. Up to 9310 conditions per place. [2024-06-14 14:08:57,430 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 154 selfloop transitions, 31 changer transitions 0/196 dead transitions. [2024-06-14 14:08:57,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 196 transitions, 1879 flow [2024-06-14 14:08:57,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 14:08:57,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 14:08:57,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 249 transitions. [2024-06-14 14:08:57,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5985576923076923 [2024-06-14 14:08:57,432 INFO L175 Difference]: Start difference. First operand has 113 places, 139 transitions, 1324 flow. Second operand 8 states and 249 transitions. [2024-06-14 14:08:57,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 196 transitions, 1879 flow [2024-06-14 14:08:57,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 196 transitions, 1807 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-14 14:08:57,568 INFO L231 Difference]: Finished difference. Result has 116 places, 141 transitions, 1362 flow [2024-06-14 14:08:57,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1252, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1362, PETRI_PLACES=116, PETRI_TRANSITIONS=141} [2024-06-14 14:08:57,568 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 61 predicate places. [2024-06-14 14:08:57,569 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 141 transitions, 1362 flow [2024-06-14 14:08:57,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:08:57,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:08:57,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:08:57,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 14:08:57,569 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:08:57,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:08:57,570 INFO L85 PathProgramCache]: Analyzing trace with hash 734970341, now seen corresponding path program 5 times [2024-06-14 14:08:57,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:08:57,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340238217] [2024-06-14 14:08:57,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:08:57,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:08:57,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:08:58,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:08:58,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:08:58,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340238217] [2024-06-14 14:08:58,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340238217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:08:58,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:08:58,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:08:58,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502671358] [2024-06-14 14:08:58,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:08:58,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:08:58,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:08:58,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:08:58,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:08:58,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-14 14:08:58,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 141 transitions, 1362 flow. Second operand has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:08:58,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:08:58,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-14 14:08:58,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:08:59,435 INFO L124 PetriNetUnfolderBase]: 7114/10416 cut-off events. [2024-06-14 14:08:59,435 INFO L125 PetriNetUnfolderBase]: For 145143/145514 co-relation queries the response was YES. [2024-06-14 14:08:59,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53033 conditions, 10416 events. 7114/10416 cut-off events. For 145143/145514 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 61023 event pairs, 2399 based on Foata normal form. 127/10494 useless extension candidates. Maximal degree in co-relation 52981. Up to 9523 conditions per place. [2024-06-14 14:08:59,510 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 143 selfloop transitions, 29 changer transitions 0/183 dead transitions. [2024-06-14 14:08:59,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 183 transitions, 1857 flow [2024-06-14 14:08:59,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 14:08:59,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 14:08:59,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 194 transitions. [2024-06-14 14:08:59,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6217948717948718 [2024-06-14 14:08:59,512 INFO L175 Difference]: Start difference. First operand has 116 places, 141 transitions, 1362 flow. Second operand 6 states and 194 transitions. [2024-06-14 14:08:59,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 183 transitions, 1857 flow [2024-06-14 14:08:59,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 183 transitions, 1785 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-14 14:08:59,680 INFO L231 Difference]: Finished difference. Result has 116 places, 143 transitions, 1400 flow [2024-06-14 14:08:59,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1290, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1400, PETRI_PLACES=116, PETRI_TRANSITIONS=143} [2024-06-14 14:08:59,680 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 61 predicate places. [2024-06-14 14:08:59,680 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 143 transitions, 1400 flow [2024-06-14 14:08:59,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:08:59,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:08:59,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:08:59,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 14:08:59,681 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:08:59,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:08:59,681 INFO L85 PathProgramCache]: Analyzing trace with hash 734822471, now seen corresponding path program 6 times [2024-06-14 14:08:59,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:08:59,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260391276] [2024-06-14 14:08:59,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:08:59,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:08:59,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:09:00,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:09:00,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:09:00,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260391276] [2024-06-14 14:09:00,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260391276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:09:00,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:09:00,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:09:00,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958808047] [2024-06-14 14:09:00,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:09:00,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:09:00,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:09:00,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:09:00,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:09:00,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-14 14:09:00,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 143 transitions, 1400 flow. Second operand has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:09:00,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:09:00,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-14 14:09:00,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:09:01,401 INFO L124 PetriNetUnfolderBase]: 7075/10355 cut-off events. [2024-06-14 14:09:01,401 INFO L125 PetriNetUnfolderBase]: For 152682/153045 co-relation queries the response was YES. [2024-06-14 14:09:01,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52979 conditions, 10355 events. 7075/10355 cut-off events. For 152682/153045 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 60676 event pairs, 1958 based on Foata normal form. 141/10447 useless extension candidates. Maximal degree in co-relation 52926. Up to 9116 conditions per place. [2024-06-14 14:09:01,471 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 140 selfloop transitions, 37 changer transitions 0/188 dead transitions. [2024-06-14 14:09:01,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 188 transitions, 1897 flow [2024-06-14 14:09:01,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 14:09:01,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 14:09:01,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 197 transitions. [2024-06-14 14:09:01,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6314102564102564 [2024-06-14 14:09:01,473 INFO L175 Difference]: Start difference. First operand has 116 places, 143 transitions, 1400 flow. Second operand 6 states and 197 transitions. [2024-06-14 14:09:01,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 188 transitions, 1897 flow [2024-06-14 14:09:01,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 188 transitions, 1815 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-14 14:09:01,651 INFO L231 Difference]: Finished difference. Result has 119 places, 145 transitions, 1438 flow [2024-06-14 14:09:01,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1320, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1438, PETRI_PLACES=119, PETRI_TRANSITIONS=145} [2024-06-14 14:09:01,652 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 64 predicate places. [2024-06-14 14:09:01,652 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 145 transitions, 1438 flow [2024-06-14 14:09:01,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:09:01,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:09:01,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:09:01,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 14:09:01,652 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:09:01,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:09:01,653 INFO L85 PathProgramCache]: Analyzing trace with hash 740547923, now seen corresponding path program 1 times [2024-06-14 14:09:01,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:09:01,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928372944] [2024-06-14 14:09:01,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:09:01,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:09:01,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:09:02,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:09:02,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:09:02,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928372944] [2024-06-14 14:09:02,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928372944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:09:02,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:09:02,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:09:02,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036103642] [2024-06-14 14:09:02,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:09:02,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:09:02,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:09:02,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:09:02,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:09:02,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-14 14:09:02,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 145 transitions, 1438 flow. Second operand has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:09:02,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:09:02,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-14 14:09:02,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:09:03,513 INFO L124 PetriNetUnfolderBase]: 6967/10209 cut-off events. [2024-06-14 14:09:03,513 INFO L125 PetriNetUnfolderBase]: For 159572/159923 co-relation queries the response was YES. [2024-06-14 14:09:03,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52530 conditions, 10209 events. 6967/10209 cut-off events. For 159572/159923 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 59633 event pairs, 2184 based on Foata normal form. 144/10312 useless extension candidates. Maximal degree in co-relation 52475. Up to 8973 conditions per place. [2024-06-14 14:09:03,582 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 156 selfloop transitions, 38 changer transitions 0/205 dead transitions. [2024-06-14 14:09:03,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 205 transitions, 1979 flow [2024-06-14 14:09:03,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 14:09:03,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 14:09:03,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 251 transitions. [2024-06-14 14:09:03,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6033653846153846 [2024-06-14 14:09:03,584 INFO L175 Difference]: Start difference. First operand has 119 places, 145 transitions, 1438 flow. Second operand 8 states and 251 transitions. [2024-06-14 14:09:03,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 205 transitions, 1979 flow [2024-06-14 14:09:03,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 205 transitions, 1844 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-14 14:09:03,812 INFO L231 Difference]: Finished difference. Result has 121 places, 146 transitions, 1378 flow [2024-06-14 14:09:03,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1263, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1378, PETRI_PLACES=121, PETRI_TRANSITIONS=146} [2024-06-14 14:09:03,812 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 66 predicate places. [2024-06-14 14:09:03,812 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 146 transitions, 1378 flow [2024-06-14 14:09:03,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:09:03,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:09:03,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:09:03,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 14:09:03,813 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:09:03,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:09:03,813 INFO L85 PathProgramCache]: Analyzing trace with hash -904215641, now seen corresponding path program 1 times [2024-06-14 14:09:03,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:09:03,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886622942] [2024-06-14 14:09:03,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:09:03,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:09:03,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:09:04,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:09:04,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:09:04,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886622942] [2024-06-14 14:09:04,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886622942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:09:04,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:09:04,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 14:09:04,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788219884] [2024-06-14 14:09:04,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:09:04,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 14:09:04,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:09:04,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 14:09:04,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-14 14:09:04,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2024-06-14 14:09:04,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 146 transitions, 1378 flow. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:09:04,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:09:04,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2024-06-14 14:09:04,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:09:05,279 INFO L124 PetriNetUnfolderBase]: 5676/8381 cut-off events. [2024-06-14 14:09:05,279 INFO L125 PetriNetUnfolderBase]: For 138754/139003 co-relation queries the response was YES. [2024-06-14 14:09:05,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44545 conditions, 8381 events. 5676/8381 cut-off events. For 138754/139003 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 49240 event pairs, 2029 based on Foata normal form. 32/8386 useless extension candidates. Maximal degree in co-relation 44490. Up to 7824 conditions per place. [2024-06-14 14:09:05,343 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 132 selfloop transitions, 33 changer transitions 0/177 dead transitions. [2024-06-14 14:09:05,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 177 transitions, 1950 flow [2024-06-14 14:09:05,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 14:09:05,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 14:09:05,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 160 transitions. [2024-06-14 14:09:05,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6153846153846154 [2024-06-14 14:09:05,345 INFO L175 Difference]: Start difference. First operand has 121 places, 146 transitions, 1378 flow. Second operand 5 states and 160 transitions. [2024-06-14 14:09:05,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 177 transitions, 1950 flow [2024-06-14 14:09:05,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 177 transitions, 1861 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-14 14:09:05,565 INFO L231 Difference]: Finished difference. Result has 120 places, 154 transitions, 1472 flow [2024-06-14 14:09:05,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1289, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1472, PETRI_PLACES=120, PETRI_TRANSITIONS=154} [2024-06-14 14:09:05,566 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 65 predicate places. [2024-06-14 14:09:05,566 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 154 transitions, 1472 flow [2024-06-14 14:09:05,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:09:05,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:09:05,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:09:05,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 14:09:05,567 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:09:05,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:09:05,567 INFO L85 PathProgramCache]: Analyzing trace with hash -872699801, now seen corresponding path program 2 times [2024-06-14 14:09:05,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:09:05,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658520229] [2024-06-14 14:09:05,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:09:05,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:09:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:09:06,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:09:06,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:09:06,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658520229] [2024-06-14 14:09:06,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658520229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:09:06,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:09:06,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 14:09:06,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828702507] [2024-06-14 14:09:06,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:09:06,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 14:09:06,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:09:06,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 14:09:06,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-14 14:09:06,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2024-06-14 14:09:06,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 154 transitions, 1472 flow. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:09:06,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:09:06,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2024-06-14 14:09:06,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:09:07,148 INFO L124 PetriNetUnfolderBase]: 5669/8372 cut-off events. [2024-06-14 14:09:07,148 INFO L125 PetriNetUnfolderBase]: For 154341/154602 co-relation queries the response was YES. [2024-06-14 14:09:07,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46125 conditions, 8372 events. 5669/8372 cut-off events. For 154341/154602 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 49085 event pairs, 2029 based on Foata normal form. 34/8380 useless extension candidates. Maximal degree in co-relation 46069. Up to 7826 conditions per place. [2024-06-14 14:09:07,229 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 130 selfloop transitions, 29 changer transitions 0/171 dead transitions. [2024-06-14 14:09:07,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 171 transitions, 1834 flow [2024-06-14 14:09:07,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 14:09:07,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 14:09:07,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2024-06-14 14:09:07,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6346153846153846 [2024-06-14 14:09:07,231 INFO L175 Difference]: Start difference. First operand has 120 places, 154 transitions, 1472 flow. Second operand 4 states and 132 transitions. [2024-06-14 14:09:07,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 171 transitions, 1834 flow [2024-06-14 14:09:07,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 171 transitions, 1741 flow, removed 36 selfloop flow, removed 1 redundant places. [2024-06-14 14:09:07,387 INFO L231 Difference]: Finished difference. Result has 123 places, 154 transitions, 1453 flow [2024-06-14 14:09:07,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1379, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1453, PETRI_PLACES=123, PETRI_TRANSITIONS=154} [2024-06-14 14:09:07,388 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 68 predicate places. [2024-06-14 14:09:07,388 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 154 transitions, 1453 flow [2024-06-14 14:09:07,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:09:07,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:09:07,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:09:07,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 14:09:07,388 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:09:07,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:09:07,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1863391521, now seen corresponding path program 1 times [2024-06-14 14:09:07,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:09:07,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879543599] [2024-06-14 14:09:07,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:09:07,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:09:07,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:09:07,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:09:07,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:09:07,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879543599] [2024-06-14 14:09:07,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879543599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:09:07,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:09:07,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 14:09:07,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259644799] [2024-06-14 14:09:07,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:09:07,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 14:09:07,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:09:07,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 14:09:07,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-14 14:09:07,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2024-06-14 14:09:07,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 154 transitions, 1453 flow. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:09:07,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:09:07,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2024-06-14 14:09:07,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:09:08,912 INFO L124 PetriNetUnfolderBase]: 5840/8644 cut-off events. [2024-06-14 14:09:08,912 INFO L125 PetriNetUnfolderBase]: For 160629/160684 co-relation queries the response was YES. [2024-06-14 14:09:08,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45630 conditions, 8644 events. 5840/8644 cut-off events. For 160629/160684 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 51334 event pairs, 2282 based on Foata normal form. 63/8680 useless extension candidates. Maximal degree in co-relation 45572. Up to 7977 conditions per place. [2024-06-14 14:09:08,987 INFO L140 encePairwiseOnDemand]: 44/52 looper letters, 145 selfloop transitions, 17 changer transitions 0/177 dead transitions. [2024-06-14 14:09:08,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 177 transitions, 1857 flow [2024-06-14 14:09:08,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 14:09:08,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 14:09:08,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 153 transitions. [2024-06-14 14:09:08,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5884615384615385 [2024-06-14 14:09:08,988 INFO L175 Difference]: Start difference. First operand has 123 places, 154 transitions, 1453 flow. Second operand 5 states and 153 transitions. [2024-06-14 14:09:08,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 177 transitions, 1857 flow [2024-06-14 14:09:09,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 177 transitions, 1799 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-14 14:09:09,121 INFO L231 Difference]: Finished difference. Result has 125 places, 157 transitions, 1469 flow [2024-06-14 14:09:09,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1395, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1469, PETRI_PLACES=125, PETRI_TRANSITIONS=157} [2024-06-14 14:09:09,121 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 70 predicate places. [2024-06-14 14:09:09,121 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 157 transitions, 1469 flow [2024-06-14 14:09:09,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:09:09,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:09:09,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:09:09,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-14 14:09:09,122 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:09:09,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:09:09,122 INFO L85 PathProgramCache]: Analyzing trace with hash 938080417, now seen corresponding path program 1 times [2024-06-14 14:09:09,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:09:09,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458371771] [2024-06-14 14:09:09,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:09:09,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:09:09,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:09:09,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:09:09,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:09:09,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458371771] [2024-06-14 14:09:09,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458371771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:09:09,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:09:09,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 14:09:09,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063528838] [2024-06-14 14:09:09,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:09:09,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 14:09:09,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:09:09,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 14:09:09,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-14 14:09:09,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 52 [2024-06-14 14:09:09,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 157 transitions, 1469 flow. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:09:09,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:09:09,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 52 [2024-06-14 14:09:09,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:09:10,895 INFO L124 PetriNetUnfolderBase]: 7463/10909 cut-off events. [2024-06-14 14:09:10,895 INFO L125 PetriNetUnfolderBase]: For 207782/207797 co-relation queries the response was YES. [2024-06-14 14:09:10,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57863 conditions, 10909 events. 7463/10909 cut-off events. For 207782/207797 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 63540 event pairs, 2649 based on Foata normal form. 10/10913 useless extension candidates. Maximal degree in co-relation 57804. Up to 10181 conditions per place. [2024-06-14 14:09:11,004 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 179 selfloop transitions, 26 changer transitions 0/213 dead transitions. [2024-06-14 14:09:11,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 213 transitions, 2261 flow [2024-06-14 14:09:11,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 14:09:11,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 14:09:11,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 181 transitions. [2024-06-14 14:09:11,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5801282051282052 [2024-06-14 14:09:11,005 INFO L175 Difference]: Start difference. First operand has 125 places, 157 transitions, 1469 flow. Second operand 6 states and 181 transitions. [2024-06-14 14:09:11,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 213 transitions, 2261 flow [2024-06-14 14:09:11,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 213 transitions, 2204 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-14 14:09:11,272 INFO L231 Difference]: Finished difference. Result has 131 places, 180 transitions, 1722 flow [2024-06-14 14:09:11,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1419, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1722, PETRI_PLACES=131, PETRI_TRANSITIONS=180} [2024-06-14 14:09:11,273 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 76 predicate places. [2024-06-14 14:09:11,273 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 180 transitions, 1722 flow [2024-06-14 14:09:11,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:09:11,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:09:11,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:09:11,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-14 14:09:11,273 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:09:11,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:09:11,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1818957531, now seen corresponding path program 2 times [2024-06-14 14:09:11,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:09:11,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403005392] [2024-06-14 14:09:11,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:09:11,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:09:11,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:09:11,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:09:11,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:09:11,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403005392] [2024-06-14 14:09:11,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403005392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:09:11,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:09:11,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 14:09:11,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123569857] [2024-06-14 14:09:11,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:09:11,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 14:09:11,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:09:11,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 14:09:11,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-14 14:09:11,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 52 [2024-06-14 14:09:11,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 180 transitions, 1722 flow. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:09:11,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:09:11,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 52 [2024-06-14 14:09:11,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:09:13,052 INFO L124 PetriNetUnfolderBase]: 7479/10933 cut-off events. [2024-06-14 14:09:13,052 INFO L125 PetriNetUnfolderBase]: For 226146/226150 co-relation queries the response was YES. [2024-06-14 14:09:13,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60286 conditions, 10933 events. 7479/10933 cut-off events. For 226146/226150 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 63806 event pairs, 2654 based on Foata normal form. 6/10932 useless extension candidates. Maximal degree in co-relation 60223. Up to 10198 conditions per place. [2024-06-14 14:09:13,146 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 171 selfloop transitions, 30 changer transitions 0/209 dead transitions. [2024-06-14 14:09:13,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 209 transitions, 2340 flow [2024-06-14 14:09:13,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 14:09:13,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 14:09:13,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 151 transitions. [2024-06-14 14:09:13,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5807692307692308 [2024-06-14 14:09:13,149 INFO L175 Difference]: Start difference. First operand has 131 places, 180 transitions, 1722 flow. Second operand 5 states and 151 transitions. [2024-06-14 14:09:13,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 209 transitions, 2340 flow [2024-06-14 14:09:13,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 209 transitions, 2308 flow, removed 16 selfloop flow, removed 0 redundant places. [2024-06-14 14:09:13,390 INFO L231 Difference]: Finished difference. Result has 137 places, 186 transitions, 1831 flow [2024-06-14 14:09:13,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1694, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1831, PETRI_PLACES=137, PETRI_TRANSITIONS=186} [2024-06-14 14:09:13,391 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 82 predicate places. [2024-06-14 14:09:13,391 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 186 transitions, 1831 flow [2024-06-14 14:09:13,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:09:13,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:09:13,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:09:13,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-14 14:09:13,392 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:09:13,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:09:13,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1818946371, now seen corresponding path program 3 times [2024-06-14 14:09:13,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:09:13,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599428973] [2024-06-14 14:09:13,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:09:13,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:09:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:09:13,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:09:13,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:09:13,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599428973] [2024-06-14 14:09:13,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599428973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:09:13,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:09:13,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 14:09:13,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981903181] [2024-06-14 14:09:13,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:09:13,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 14:09:13,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:09:13,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 14:09:13,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-14 14:09:13,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 52 [2024-06-14 14:09:13,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 186 transitions, 1831 flow. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:09:13,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:09:13,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 52 [2024-06-14 14:09:13,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:09:15,200 INFO L124 PetriNetUnfolderBase]: 7472/10926 cut-off events. [2024-06-14 14:09:15,200 INFO L125 PetriNetUnfolderBase]: For 241088/241114 co-relation queries the response was YES. [2024-06-14 14:09:15,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61040 conditions, 10926 events. 7472/10926 cut-off events. For 241088/241114 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 63774 event pairs, 2649 based on Foata normal form. 18/10938 useless extension candidates. Maximal degree in co-relation 60973. Up to 10191 conditions per place. [2024-06-14 14:09:15,292 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 173 selfloop transitions, 31 changer transitions 0/212 dead transitions. [2024-06-14 14:09:15,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 212 transitions, 2309 flow [2024-06-14 14:09:15,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 14:09:15,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 14:09:15,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 155 transitions. [2024-06-14 14:09:15,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5961538461538461 [2024-06-14 14:09:15,293 INFO L175 Difference]: Start difference. First operand has 137 places, 186 transitions, 1831 flow. Second operand 5 states and 155 transitions. [2024-06-14 14:09:15,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 212 transitions, 2309 flow [2024-06-14 14:09:15,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 212 transitions, 2249 flow, removed 17 selfloop flow, removed 1 redundant places. [2024-06-14 14:09:15,600 INFO L231 Difference]: Finished difference. Result has 141 places, 186 transitions, 1847 flow [2024-06-14 14:09:15,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1771, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1847, PETRI_PLACES=141, PETRI_TRANSITIONS=186} [2024-06-14 14:09:15,600 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 86 predicate places. [2024-06-14 14:09:15,600 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 186 transitions, 1847 flow [2024-06-14 14:09:15,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:09:15,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:09:15,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:09:15,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-14 14:09:15,600 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:09:15,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:09:15,601 INFO L85 PathProgramCache]: Analyzing trace with hash 2145451239, now seen corresponding path program 1 times [2024-06-14 14:09:15,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:09:15,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771295052] [2024-06-14 14:09:15,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:09:15,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:09:15,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:09:16,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:09:16,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:09:16,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771295052] [2024-06-14 14:09:16,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771295052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:09:16,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:09:16,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 14:09:16,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914142191] [2024-06-14 14:09:16,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:09:16,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 14:09:16,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:09:16,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 14:09:16,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-14 14:09:16,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-14 14:09:16,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 186 transitions, 1847 flow. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:09:16,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:09:16,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-14 14:09:16,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:09:17,256 INFO L124 PetriNetUnfolderBase]: 6148/8991 cut-off events. [2024-06-14 14:09:17,257 INFO L125 PetriNetUnfolderBase]: For 216241/216248 co-relation queries the response was YES. [2024-06-14 14:09:17,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51954 conditions, 8991 events. 6148/8991 cut-off events. For 216241/216248 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 52057 event pairs, 2307 based on Foata normal form. 6/8992 useless extension candidates. Maximal degree in co-relation 51885. Up to 8422 conditions per place. [2024-06-14 14:09:17,329 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 190 selfloop transitions, 33 changer transitions 0/232 dead transitions. [2024-06-14 14:09:17,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 232 transitions, 2622 flow [2024-06-14 14:09:17,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 14:09:17,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 14:09:17,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 183 transitions. [2024-06-14 14:09:17,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5865384615384616 [2024-06-14 14:09:17,330 INFO L175 Difference]: Start difference. First operand has 141 places, 186 transitions, 1847 flow. Second operand 6 states and 183 transitions. [2024-06-14 14:09:17,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 232 transitions, 2622 flow [2024-06-14 14:09:17,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 232 transitions, 2574 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-14 14:09:17,555 INFO L231 Difference]: Finished difference. Result has 146 places, 203 transitions, 2061 flow [2024-06-14 14:09:17,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1803, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2061, PETRI_PLACES=146, PETRI_TRANSITIONS=203} [2024-06-14 14:09:17,556 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 91 predicate places. [2024-06-14 14:09:17,556 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 203 transitions, 2061 flow [2024-06-14 14:09:17,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:09:17,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:09:17,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:09:17,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-14 14:09:17,556 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:09:17,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:09:17,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1283882509, now seen corresponding path program 2 times [2024-06-14 14:09:17,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:09:17,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951962466] [2024-06-14 14:09:17,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:09:17,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:09:17,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:09:18,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:09:18,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:09:18,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951962466] [2024-06-14 14:09:18,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951962466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:09:18,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:09:18,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 14:09:18,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258583088] [2024-06-14 14:09:18,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:09:18,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 14:09:18,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:09:18,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 14:09:18,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 14:09:18,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-14 14:09:18,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 203 transitions, 2061 flow. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:09:18,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:09:18,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-14 14:09:18,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:09:19,400 INFO L124 PetriNetUnfolderBase]: 6164/9018 cut-off events. [2024-06-14 14:09:19,400 INFO L125 PetriNetUnfolderBase]: For 221400/221410 co-relation queries the response was YES. [2024-06-14 14:09:19,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53716 conditions, 9018 events. 6164/9018 cut-off events. For 221400/221410 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 52072 event pairs, 2299 based on Foata normal form. 10/9024 useless extension candidates. Maximal degree in co-relation 53645. Up to 8457 conditions per place. [2024-06-14 14:09:19,474 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 199 selfloop transitions, 33 changer transitions 0/241 dead transitions. [2024-06-14 14:09:19,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 241 transitions, 2781 flow [2024-06-14 14:09:19,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 14:09:19,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 14:09:19,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 207 transitions. [2024-06-14 14:09:19,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5686813186813187 [2024-06-14 14:09:19,476 INFO L175 Difference]: Start difference. First operand has 146 places, 203 transitions, 2061 flow. Second operand 7 states and 207 transitions. [2024-06-14 14:09:19,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 241 transitions, 2781 flow [2024-06-14 14:09:19,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 241 transitions, 2697 flow, removed 26 selfloop flow, removed 2 redundant places. [2024-06-14 14:09:19,730 INFO L231 Difference]: Finished difference. Result has 152 places, 209 transitions, 2127 flow [2024-06-14 14:09:19,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1987, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2127, PETRI_PLACES=152, PETRI_TRANSITIONS=209} [2024-06-14 14:09:19,731 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 97 predicate places. [2024-06-14 14:09:19,731 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 209 transitions, 2127 flow [2024-06-14 14:09:19,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:09:19,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:09:19,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:09:19,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-14 14:09:19,732 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:09:19,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:09:19,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1283888089, now seen corresponding path program 3 times [2024-06-14 14:09:19,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:09:19,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087832294] [2024-06-14 14:09:19,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:09:19,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:09:19,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:09:20,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:09:20,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:09:20,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087832294] [2024-06-14 14:09:20,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087832294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:09:20,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:09:20,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 14:09:20,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245697087] [2024-06-14 14:09:20,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:09:20,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 14:09:20,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:09:20,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 14:09:20,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 14:09:20,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-14 14:09:20,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 209 transitions, 2127 flow. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:09:20,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:09:20,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-14 14:09:20,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:09:21,629 INFO L124 PetriNetUnfolderBase]: 6157/9008 cut-off events. [2024-06-14 14:09:21,629 INFO L125 PetriNetUnfolderBase]: For 233096/233106 co-relation queries the response was YES. [2024-06-14 14:09:21,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53818 conditions, 9008 events. 6157/9008 cut-off events. For 233096/233106 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 51929 event pairs, 2307 based on Foata normal form. 8/9011 useless extension candidates. Maximal degree in co-relation 53745. Up to 8450 conditions per place. [2024-06-14 14:09:21,715 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 191 selfloop transitions, 31 changer transitions 0/231 dead transitions. [2024-06-14 14:09:21,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 231 transitions, 2631 flow [2024-06-14 14:09:21,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 14:09:21,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 14:09:21,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 156 transitions. [2024-06-14 14:09:21,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-14 14:09:21,717 INFO L175 Difference]: Start difference. First operand has 152 places, 209 transitions, 2127 flow. Second operand 5 states and 156 transitions. [2024-06-14 14:09:21,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 231 transitions, 2631 flow [2024-06-14 14:09:21,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 231 transitions, 2521 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-14 14:09:21,958 INFO L231 Difference]: Finished difference. Result has 153 places, 209 transitions, 2088 flow [2024-06-14 14:09:21,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2017, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2088, PETRI_PLACES=153, PETRI_TRANSITIONS=209} [2024-06-14 14:09:21,959 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 98 predicate places. [2024-06-14 14:09:21,959 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 209 transitions, 2088 flow [2024-06-14 14:09:21,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:09:21,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:09:21,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:09:21,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-14 14:09:21,959 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:09:21,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:09:21,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1298363159, now seen corresponding path program 1 times [2024-06-14 14:09:21,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:09:21,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428051211] [2024-06-14 14:09:21,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:09:21,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:09:21,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:09:22,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:09:22,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:09:22,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428051211] [2024-06-14 14:09:22,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428051211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:09:22,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:09:22,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 14:09:22,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004711759] [2024-06-14 14:09:22,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:09:22,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 14:09:22,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:09:22,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 14:09:22,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-14 14:09:22,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2024-06-14 14:09:22,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 209 transitions, 2088 flow. Second operand has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:09:22,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:09:22,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2024-06-14 14:09:22,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:09:23,932 INFO L124 PetriNetUnfolderBase]: 6897/10158 cut-off events. [2024-06-14 14:09:23,933 INFO L125 PetriNetUnfolderBase]: For 318594/318755 co-relation queries the response was YES. [2024-06-14 14:09:23,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62319 conditions, 10158 events. 6897/10158 cut-off events. For 318594/318755 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 60394 event pairs, 2392 based on Foata normal form. 45/9978 useless extension candidates. Maximal degree in co-relation 62245. Up to 9062 conditions per place. [2024-06-14 14:09:24,167 INFO L140 encePairwiseOnDemand]: 45/52 looper letters, 178 selfloop transitions, 18 changer transitions 0/239 dead transitions. [2024-06-14 14:09:24,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 239 transitions, 2726 flow [2024-06-14 14:09:24,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 14:09:24,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 14:09:24,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2024-06-14 14:09:24,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5913461538461539 [2024-06-14 14:09:24,168 INFO L175 Difference]: Start difference. First operand has 153 places, 209 transitions, 2088 flow. Second operand 4 states and 123 transitions. [2024-06-14 14:09:24,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 239 transitions, 2726 flow [2024-06-14 14:09:24,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 239 transitions, 2656 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-14 14:09:24,544 INFO L231 Difference]: Finished difference. Result has 154 places, 226 transitions, 2311 flow [2024-06-14 14:09:24,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2026, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2311, PETRI_PLACES=154, PETRI_TRANSITIONS=226} [2024-06-14 14:09:24,545 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 99 predicate places. [2024-06-14 14:09:24,545 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 226 transitions, 2311 flow [2024-06-14 14:09:24,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:09:24,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:09:24,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:09:24,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-14 14:09:24,545 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:09:24,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:09:24,545 INFO L85 PathProgramCache]: Analyzing trace with hash 2081619046, now seen corresponding path program 1 times [2024-06-14 14:09:24,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:09:24,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949893755] [2024-06-14 14:09:24,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:09:24,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:09:24,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:09:25,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:09:25,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:09:25,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949893755] [2024-06-14 14:09:25,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949893755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:09:25,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:09:25,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 14:09:25,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311832773] [2024-06-14 14:09:25,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:09:25,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 14:09:25,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:09:25,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 14:09:25,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 14:09:25,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2024-06-14 14:09:25,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 226 transitions, 2311 flow. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:09:25,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:09:25,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2024-06-14 14:09:25,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:09:26,545 INFO L124 PetriNetUnfolderBase]: 6790/10088 cut-off events. [2024-06-14 14:09:26,545 INFO L125 PetriNetUnfolderBase]: For 343893/344483 co-relation queries the response was YES. [2024-06-14 14:09:26,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65929 conditions, 10088 events. 6790/10088 cut-off events. For 343893/344483 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 60426 event pairs, 2033 based on Foata normal form. 73/9793 useless extension candidates. Maximal degree in co-relation 65853. Up to 8986 conditions per place. [2024-06-14 14:09:26,652 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 176 selfloop transitions, 61 changer transitions 0/264 dead transitions. [2024-06-14 14:09:26,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 264 transitions, 3095 flow [2024-06-14 14:09:26,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 14:09:26,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 14:09:26,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 190 transitions. [2024-06-14 14:09:26,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6089743589743589 [2024-06-14 14:09:26,653 INFO L175 Difference]: Start difference. First operand has 154 places, 226 transitions, 2311 flow. Second operand 6 states and 190 transitions. [2024-06-14 14:09:26,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 264 transitions, 3095 flow [2024-06-14 14:09:27,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 264 transitions, 3075 flow, removed 10 selfloop flow, removed 0 redundant places. [2024-06-14 14:09:27,041 INFO L231 Difference]: Finished difference. Result has 160 places, 232 transitions, 2539 flow [2024-06-14 14:09:27,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2291, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2539, PETRI_PLACES=160, PETRI_TRANSITIONS=232} [2024-06-14 14:09:27,042 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 105 predicate places. [2024-06-14 14:09:27,042 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 232 transitions, 2539 flow [2024-06-14 14:09:27,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:09:27,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:09:27,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:09:27,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-14 14:09:27,042 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:09:27,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:09:27,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1367779226, now seen corresponding path program 2 times [2024-06-14 14:09:27,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:09:27,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124120220] [2024-06-14 14:09:27,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:09:27,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:09:27,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:09:27,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:09:27,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:09:27,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124120220] [2024-06-14 14:09:27,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124120220] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:09:27,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:09:27,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 14:09:27,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462960652] [2024-06-14 14:09:27,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:09:27,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 14:09:27,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:09:27,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 14:09:27,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-14 14:09:27,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2024-06-14 14:09:27,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 232 transitions, 2539 flow. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:09:27,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:09:27,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2024-06-14 14:09:27,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:09:29,111 INFO L124 PetriNetUnfolderBase]: 6847/10169 cut-off events. [2024-06-14 14:09:29,111 INFO L125 PetriNetUnfolderBase]: For 374226/374912 co-relation queries the response was YES. [2024-06-14 14:09:29,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68566 conditions, 10169 events. 6847/10169 cut-off events. For 374226/374912 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 61055 event pairs, 2199 based on Foata normal form. 58/9859 useless extension candidates. Maximal degree in co-relation 68487. Up to 9207 conditions per place. [2024-06-14 14:09:29,228 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 177 selfloop transitions, 57 changer transitions 0/261 dead transitions. [2024-06-14 14:09:29,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 261 transitions, 3135 flow [2024-06-14 14:09:29,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 14:09:29,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 14:09:29,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 184 transitions. [2024-06-14 14:09:29,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5897435897435898 [2024-06-14 14:09:29,229 INFO L175 Difference]: Start difference. First operand has 160 places, 232 transitions, 2539 flow. Second operand 6 states and 184 transitions. [2024-06-14 14:09:29,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 261 transitions, 3135 flow [2024-06-14 14:09:29,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 261 transitions, 2993 flow, removed 41 selfloop flow, removed 2 redundant places. [2024-06-14 14:09:29,739 INFO L231 Difference]: Finished difference. Result has 164 places, 235 transitions, 2588 flow [2024-06-14 14:09:29,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2415, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2588, PETRI_PLACES=164, PETRI_TRANSITIONS=235} [2024-06-14 14:09:29,740 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 109 predicate places. [2024-06-14 14:09:29,740 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 235 transitions, 2588 flow [2024-06-14 14:09:29,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:09:29,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:09:29,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:09:29,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-14 14:09:29,740 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:09:29,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:09:29,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1145828058, now seen corresponding path program 3 times [2024-06-14 14:09:29,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:09:29,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713953540] [2024-06-14 14:09:29,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:09:29,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:09:29,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:09:30,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:09:30,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:09:30,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713953540] [2024-06-14 14:09:30,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713953540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:09:30,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:09:30,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 14:09:30,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812219966] [2024-06-14 14:09:30,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:09:30,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 14:09:30,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:09:30,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 14:09:30,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-14 14:09:30,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2024-06-14 14:09:30,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 235 transitions, 2588 flow. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:09:30,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:09:30,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2024-06-14 14:09:30,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:09:31,950 INFO L124 PetriNetUnfolderBase]: 6820/10134 cut-off events. [2024-06-14 14:09:31,951 INFO L125 PetriNetUnfolderBase]: For 388095/388757 co-relation queries the response was YES. [2024-06-14 14:09:32,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68388 conditions, 10134 events. 6820/10134 cut-off events. For 388095/388757 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 60750 event pairs, 2023 based on Foata normal form. 86/9854 useless extension candidates. Maximal degree in co-relation 68307. Up to 9124 conditions per place. [2024-06-14 14:09:32,074 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 180 selfloop transitions, 53 changer transitions 0/260 dead transitions. [2024-06-14 14:09:32,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 260 transitions, 3118 flow [2024-06-14 14:09:32,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 14:09:32,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 14:09:32,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2024-06-14 14:09:32,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6230769230769231 [2024-06-14 14:09:32,075 INFO L175 Difference]: Start difference. First operand has 164 places, 235 transitions, 2588 flow. Second operand 5 states and 162 transitions. [2024-06-14 14:09:32,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 260 transitions, 3118 flow [2024-06-14 14:09:32,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 260 transitions, 2957 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-14 14:09:32,658 INFO L231 Difference]: Finished difference. Result has 165 places, 235 transitions, 2547 flow [2024-06-14 14:09:32,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2427, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2547, PETRI_PLACES=165, PETRI_TRANSITIONS=235} [2024-06-14 14:09:32,658 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 110 predicate places. [2024-06-14 14:09:32,658 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 235 transitions, 2547 flow [2024-06-14 14:09:32,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:09:32,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:09:32,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:09:32,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-14 14:09:32,659 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:09:32,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:09:32,659 INFO L85 PathProgramCache]: Analyzing trace with hash 374736100, now seen corresponding path program 1 times [2024-06-14 14:09:32,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:09:32,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899803957] [2024-06-14 14:09:32,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:09:32,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:09:32,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:09:33,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:09:33,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:09:33,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899803957] [2024-06-14 14:09:33,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899803957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:09:33,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:09:33,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:09:33,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606699676] [2024-06-14 14:09:33,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:09:33,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:09:33,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:09:33,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:09:33,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:09:33,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 52 [2024-06-14 14:09:33,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 235 transitions, 2547 flow. Second operand has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:09:33,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:09:33,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 52 [2024-06-14 14:09:33,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:09:34,848 INFO L124 PetriNetUnfolderBase]: 7825/11383 cut-off events. [2024-06-14 14:09:34,848 INFO L125 PetriNetUnfolderBase]: For 374029/374053 co-relation queries the response was YES. [2024-06-14 14:09:34,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71024 conditions, 11383 events. 7825/11383 cut-off events. For 374029/374053 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 65909 event pairs, 2105 based on Foata normal form. 28/11406 useless extension candidates. Maximal degree in co-relation 70942. Up to 10367 conditions per place. [2024-06-14 14:09:34,955 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 247 selfloop transitions, 39 changer transitions 0/294 dead transitions. [2024-06-14 14:09:34,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 294 transitions, 3493 flow [2024-06-14 14:09:34,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 14:09:34,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 14:09:34,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 213 transitions. [2024-06-14 14:09:34,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5851648351648352 [2024-06-14 14:09:34,957 INFO L175 Difference]: Start difference. First operand has 165 places, 235 transitions, 2547 flow. Second operand 7 states and 213 transitions. [2024-06-14 14:09:34,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 294 transitions, 3493 flow [2024-06-14 14:09:35,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 294 transitions, 3376 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-14 14:09:35,444 INFO L231 Difference]: Finished difference. Result has 170 places, 245 transitions, 2637 flow [2024-06-14 14:09:35,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2430, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2637, PETRI_PLACES=170, PETRI_TRANSITIONS=245} [2024-06-14 14:09:35,445 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 115 predicate places. [2024-06-14 14:09:35,445 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 245 transitions, 2637 flow [2024-06-14 14:09:35,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:09:35,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:09:35,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:09:35,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-14 14:09:35,445 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:09:35,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:09:35,445 INFO L85 PathProgramCache]: Analyzing trace with hash 640433380, now seen corresponding path program 2 times [2024-06-14 14:09:35,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:09:35,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452408936] [2024-06-14 14:09:35,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:09:35,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:09:35,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:09:36,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:09:36,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:09:36,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452408936] [2024-06-14 14:09:36,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452408936] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:09:36,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:09:36,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:09:36,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94031434] [2024-06-14 14:09:36,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:09:36,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:09:36,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:09:36,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:09:36,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:09:36,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 52 [2024-06-14 14:09:36,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 245 transitions, 2637 flow. Second operand has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:09:36,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:09:36,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 52 [2024-06-14 14:09:36,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:09:37,694 INFO L124 PetriNetUnfolderBase]: 8065/11719 cut-off events. [2024-06-14 14:09:37,694 INFO L125 PetriNetUnfolderBase]: For 406759/406783 co-relation queries the response was YES. [2024-06-14 14:09:37,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74650 conditions, 11719 events. 8065/11719 cut-off events. For 406759/406783 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 68109 event pairs, 2589 based on Foata normal form. 28/11742 useless extension candidates. Maximal degree in co-relation 74565. Up to 10803 conditions per place. [2024-06-14 14:09:37,805 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 251 selfloop transitions, 36 changer transitions 0/295 dead transitions. [2024-06-14 14:09:37,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 295 transitions, 3546 flow [2024-06-14 14:09:37,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 14:09:37,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 14:09:37,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 210 transitions. [2024-06-14 14:09:37,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5769230769230769 [2024-06-14 14:09:37,806 INFO L175 Difference]: Start difference. First operand has 170 places, 245 transitions, 2637 flow. Second operand 7 states and 210 transitions. [2024-06-14 14:09:37,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 295 transitions, 3546 flow [2024-06-14 14:09:38,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 295 transitions, 3494 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-14 14:09:38,392 INFO L231 Difference]: Finished difference. Result has 176 places, 251 transitions, 2745 flow [2024-06-14 14:09:38,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2589, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2745, PETRI_PLACES=176, PETRI_TRANSITIONS=251} [2024-06-14 14:09:38,393 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 121 predicate places. [2024-06-14 14:09:38,393 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 251 transitions, 2745 flow [2024-06-14 14:09:38,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:09:38,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:09:38,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:09:38,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-14 14:09:38,394 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:09:38,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:09:38,394 INFO L85 PathProgramCache]: Analyzing trace with hash 640759810, now seen corresponding path program 3 times [2024-06-14 14:09:38,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:09:38,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994135574] [2024-06-14 14:09:38,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:09:38,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:09:38,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:09:38,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:09:38,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:09:38,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994135574] [2024-06-14 14:09:38,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994135574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:09:38,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:09:38,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:09:38,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478104212] [2024-06-14 14:09:38,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:09:38,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:09:38,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:09:38,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:09:38,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:09:39,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 52 [2024-06-14 14:09:39,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 251 transitions, 2745 flow. Second operand has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:09:39,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:09:39,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 52 [2024-06-14 14:09:39,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:09:40,747 INFO L124 PetriNetUnfolderBase]: 8021/11659 cut-off events. [2024-06-14 14:09:40,747 INFO L125 PetriNetUnfolderBase]: For 421214/421238 co-relation queries the response was YES. [2024-06-14 14:09:40,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74749 conditions, 11659 events. 8021/11659 cut-off events. For 421214/421238 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 67702 event pairs, 2588 based on Foata normal form. 32/11686 useless extension candidates. Maximal degree in co-relation 74661. Up to 10866 conditions per place. [2024-06-14 14:09:40,861 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 250 selfloop transitions, 33 changer transitions 0/291 dead transitions. [2024-06-14 14:09:40,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 291 transitions, 3444 flow [2024-06-14 14:09:40,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 14:09:40,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 14:09:40,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 205 transitions. [2024-06-14 14:09:40,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5631868131868132 [2024-06-14 14:09:40,862 INFO L175 Difference]: Start difference. First operand has 176 places, 251 transitions, 2745 flow. Second operand 7 states and 205 transitions. [2024-06-14 14:09:40,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 291 transitions, 3444 flow [2024-06-14 14:09:41,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 291 transitions, 3398 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-14 14:09:41,487 INFO L231 Difference]: Finished difference. Result has 180 places, 252 transitions, 2789 flow [2024-06-14 14:09:41,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2701, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2789, PETRI_PLACES=180, PETRI_TRANSITIONS=252} [2024-06-14 14:09:41,488 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 125 predicate places. [2024-06-14 14:09:41,488 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 252 transitions, 2789 flow [2024-06-14 14:09:41,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:09:41,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:09:41,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:09:41,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-14 14:09:41,489 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:09:41,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:09:41,489 INFO L85 PathProgramCache]: Analyzing trace with hash 463273960, now seen corresponding path program 1 times [2024-06-14 14:09:41,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:09:41,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492655599] [2024-06-14 14:09:41,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:09:41,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:09:41,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:09:42,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:09:42,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:09:42,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492655599] [2024-06-14 14:09:42,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492655599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:09:42,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:09:42,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:09:42,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593301381] [2024-06-14 14:09:42,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:09:42,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:09:42,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:09:42,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:09:42,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:09:42,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-14 14:09:42,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 252 transitions, 2789 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:09:42,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:09:42,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-14 14:09:42,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:09:43,839 INFO L124 PetriNetUnfolderBase]: 7665/11275 cut-off events. [2024-06-14 14:09:43,839 INFO L125 PetriNetUnfolderBase]: For 482667/483540 co-relation queries the response was YES. [2024-06-14 14:09:43,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76756 conditions, 11275 events. 7665/11275 cut-off events. For 482667/483540 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 67569 event pairs, 2313 based on Foata normal form. 124/10980 useless extension candidates. Maximal degree in co-relation 76666. Up to 9935 conditions per place. [2024-06-14 14:09:43,946 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 184 selfloop transitions, 93 changer transitions 0/307 dead transitions. [2024-06-14 14:09:43,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 307 transitions, 3929 flow [2024-06-14 14:09:43,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 14:09:43,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 14:09:43,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 223 transitions. [2024-06-14 14:09:43,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6126373626373627 [2024-06-14 14:09:43,947 INFO L175 Difference]: Start difference. First operand has 180 places, 252 transitions, 2789 flow. Second operand 7 states and 223 transitions. [2024-06-14 14:09:43,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 307 transitions, 3929 flow [2024-06-14 14:09:44,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 307 transitions, 3882 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-14 14:09:44,665 INFO L231 Difference]: Finished difference. Result has 183 places, 264 transitions, 3137 flow [2024-06-14 14:09:44,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2742, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3137, PETRI_PLACES=183, PETRI_TRANSITIONS=264} [2024-06-14 14:09:44,665 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 128 predicate places. [2024-06-14 14:09:44,665 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 264 transitions, 3137 flow [2024-06-14 14:09:44,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:09:44,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:09:44,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:09:44,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-14 14:09:44,666 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:09:44,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:09:44,666 INFO L85 PathProgramCache]: Analyzing trace with hash 463394116, now seen corresponding path program 1 times [2024-06-14 14:09:44,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:09:44,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511628641] [2024-06-14 14:09:44,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:09:44,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:09:44,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:09:45,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:09:45,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:09:45,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511628641] [2024-06-14 14:09:45,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511628641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:09:45,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:09:45,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:09:45,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673552657] [2024-06-14 14:09:45,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:09:45,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:09:45,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:09:45,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:09:45,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:09:45,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 52 [2024-06-14 14:09:45,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 264 transitions, 3137 flow. Second operand has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:09:45,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:09:45,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 52 [2024-06-14 14:09:45,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:09:47,173 INFO L124 PetriNetUnfolderBase]: 8133/11896 cut-off events. [2024-06-14 14:09:47,173 INFO L125 PetriNetUnfolderBase]: For 468745/468783 co-relation queries the response was YES. [2024-06-14 14:09:47,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79154 conditions, 11896 events. 8133/11896 cut-off events. For 468745/468783 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 70139 event pairs, 2602 based on Foata normal form. 30/11919 useless extension candidates. Maximal degree in co-relation 79063. Up to 10882 conditions per place. [2024-06-14 14:09:47,313 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 263 selfloop transitions, 63 changer transitions 0/334 dead transitions. [2024-06-14 14:09:47,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 334 transitions, 4495 flow [2024-06-14 14:09:47,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 14:09:47,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 14:09:47,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 214 transitions. [2024-06-14 14:09:47,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5879120879120879 [2024-06-14 14:09:47,315 INFO L175 Difference]: Start difference. First operand has 183 places, 264 transitions, 3137 flow. Second operand 7 states and 214 transitions. [2024-06-14 14:09:47,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 334 transitions, 4495 flow [2024-06-14 14:09:48,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 334 transitions, 4349 flow, removed 41 selfloop flow, removed 2 redundant places. [2024-06-14 14:09:48,114 INFO L231 Difference]: Finished difference. Result has 191 places, 289 transitions, 3483 flow [2024-06-14 14:09:48,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2999, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3483, PETRI_PLACES=191, PETRI_TRANSITIONS=289} [2024-06-14 14:09:48,115 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 136 predicate places. [2024-06-14 14:09:48,115 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 289 transitions, 3483 flow [2024-06-14 14:09:48,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:09:48,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:09:48,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:09:48,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-14 14:09:48,116 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:09:48,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:09:48,116 INFO L85 PathProgramCache]: Analyzing trace with hash 463393930, now seen corresponding path program 2 times [2024-06-14 14:09:48,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:09:48,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826421650] [2024-06-14 14:09:48,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:09:48,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:09:48,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:09:48,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:09:48,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:09:48,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826421650] [2024-06-14 14:09:48,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826421650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:09:48,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:09:48,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:09:48,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012537410] [2024-06-14 14:09:48,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:09:48,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:09:48,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:09:48,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:09:48,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:09:48,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-14 14:09:48,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 289 transitions, 3483 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:09:48,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:09:48,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-14 14:09:48,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:09:50,485 INFO L124 PetriNetUnfolderBase]: 7756/11420 cut-off events. [2024-06-14 14:09:50,485 INFO L125 PetriNetUnfolderBase]: For 552033/553315 co-relation queries the response was YES. [2024-06-14 14:09:50,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82626 conditions, 11420 events. 7756/11420 cut-off events. For 552033/553315 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 68802 event pairs, 2277 based on Foata normal form. 82/11128 useless extension candidates. Maximal degree in co-relation 82530. Up to 10243 conditions per place. [2024-06-14 14:09:50,804 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 215 selfloop transitions, 83 changer transitions 0/332 dead transitions. [2024-06-14 14:09:50,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 332 transitions, 4262 flow [2024-06-14 14:09:50,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 14:09:50,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 14:09:50,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 213 transitions. [2024-06-14 14:09:50,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5851648351648352 [2024-06-14 14:09:50,805 INFO L175 Difference]: Start difference. First operand has 191 places, 289 transitions, 3483 flow. Second operand 7 states and 213 transitions. [2024-06-14 14:09:50,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 332 transitions, 4262 flow [2024-06-14 14:09:51,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 332 transitions, 4180 flow, removed 32 selfloop flow, removed 1 redundant places. [2024-06-14 14:09:51,664 INFO L231 Difference]: Finished difference. Result has 197 places, 297 transitions, 3678 flow [2024-06-14 14:09:51,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=3401, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3678, PETRI_PLACES=197, PETRI_TRANSITIONS=297} [2024-06-14 14:09:51,664 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 142 predicate places. [2024-06-14 14:09:51,664 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 297 transitions, 3678 flow [2024-06-14 14:09:51,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:09:51,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:09:51,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:09:51,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-14 14:09:51,665 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:09:51,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:09:51,666 INFO L85 PathProgramCache]: Analyzing trace with hash 640525636, now seen corresponding path program 2 times [2024-06-14 14:09:51,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:09:51,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816498758] [2024-06-14 14:09:51,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:09:51,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:09:51,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:09:52,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:09:52,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:09:52,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816498758] [2024-06-14 14:09:52,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816498758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:09:52,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:09:52,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:09:52,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962338921] [2024-06-14 14:09:52,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:09:52,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:09:52,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:09:52,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:09:52,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:09:52,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 52 [2024-06-14 14:09:52,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 297 transitions, 3678 flow. Second operand has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:09:52,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:09:52,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 52 [2024-06-14 14:09:52,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:09:54,009 INFO L124 PetriNetUnfolderBase]: 8257/12073 cut-off events. [2024-06-14 14:09:54,009 INFO L125 PetriNetUnfolderBase]: For 525677/525718 co-relation queries the response was YES. [2024-06-14 14:09:54,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83870 conditions, 12073 events. 8257/12073 cut-off events. For 525677/525718 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 71279 event pairs, 2602 based on Foata normal form. 33/12099 useless extension candidates. Maximal degree in co-relation 83772. Up to 11010 conditions per place. [2024-06-14 14:09:54,149 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 274 selfloop transitions, 77 changer transitions 0/359 dead transitions. [2024-06-14 14:09:54,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 359 transitions, 5206 flow [2024-06-14 14:09:54,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 14:09:54,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 14:09:54,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 214 transitions. [2024-06-14 14:09:54,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5879120879120879 [2024-06-14 14:09:54,151 INFO L175 Difference]: Start difference. First operand has 197 places, 297 transitions, 3678 flow. Second operand 7 states and 214 transitions. [2024-06-14 14:09:54,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 359 transitions, 5206 flow [2024-06-14 14:09:55,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 359 transitions, 4990 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-14 14:09:55,314 INFO L231 Difference]: Finished difference. Result has 202 places, 315 transitions, 3900 flow [2024-06-14 14:09:55,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=3482, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3900, PETRI_PLACES=202, PETRI_TRANSITIONS=315} [2024-06-14 14:09:55,314 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 147 predicate places. [2024-06-14 14:09:55,315 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 315 transitions, 3900 flow [2024-06-14 14:09:55,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:09:55,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:09:55,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:09:55,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-14 14:09:55,315 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:09:55,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:09:55,315 INFO L85 PathProgramCache]: Analyzing trace with hash 468035560, now seen corresponding path program 3 times [2024-06-14 14:09:55,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:09:55,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077431612] [2024-06-14 14:09:55,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:09:55,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:09:55,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:09:55,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:09:55,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:09:55,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077431612] [2024-06-14 14:09:55,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077431612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:09:55,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:09:55,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:09:55,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346538338] [2024-06-14 14:09:55,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:09:55,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:09:55,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:09:55,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:09:55,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:09:56,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-14 14:09:56,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 315 transitions, 3900 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:09:56,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:09:56,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-14 14:09:56,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:09:57,937 INFO L124 PetriNetUnfolderBase]: 7905/11639 cut-off events. [2024-06-14 14:09:57,937 INFO L125 PetriNetUnfolderBase]: For 610095/611371 co-relation queries the response was YES. [2024-06-14 14:09:58,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86054 conditions, 11639 events. 7905/11639 cut-off events. For 610095/611371 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 70044 event pairs, 2277 based on Foata normal form. 92/11358 useless extension candidates. Maximal degree in co-relation 85953. Up to 10387 conditions per place. [2024-06-14 14:09:58,098 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 229 selfloop transitions, 107 changer transitions 0/373 dead transitions. [2024-06-14 14:09:58,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 373 transitions, 5094 flow [2024-06-14 14:09:58,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 14:09:58,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 14:09:58,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 237 transitions. [2024-06-14 14:09:58,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5697115384615384 [2024-06-14 14:09:58,099 INFO L175 Difference]: Start difference. First operand has 202 places, 315 transitions, 3900 flow. Second operand 8 states and 237 transitions. [2024-06-14 14:09:58,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 373 transitions, 5094 flow [2024-06-14 14:09:59,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 373 transitions, 4975 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-06-14 14:09:59,274 INFO L231 Difference]: Finished difference. Result has 210 places, 335 transitions, 4328 flow [2024-06-14 14:09:59,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=3781, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4328, PETRI_PLACES=210, PETRI_TRANSITIONS=335} [2024-06-14 14:09:59,275 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 155 predicate places. [2024-06-14 14:09:59,275 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 335 transitions, 4328 flow [2024-06-14 14:09:59,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:09:59,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:09:59,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:09:59,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-14 14:09:59,276 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:09:59,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:09:59,276 INFO L85 PathProgramCache]: Analyzing trace with hash 640762786, now seen corresponding path program 3 times [2024-06-14 14:09:59,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:09:59,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319668258] [2024-06-14 14:09:59,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:09:59,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:09:59,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:09:59,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:09:59,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:09:59,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319668258] [2024-06-14 14:09:59,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319668258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:09:59,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:09:59,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:09:59,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830482218] [2024-06-14 14:09:59,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:09:59,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:09:59,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:09:59,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:09:59,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:09:59,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 52 [2024-06-14 14:09:59,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 335 transitions, 4328 flow. Second operand has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:09:59,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:09:59,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 52 [2024-06-14 14:09:59,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:10:01,820 INFO L124 PetriNetUnfolderBase]: 8328/12175 cut-off events. [2024-06-14 14:10:01,820 INFO L125 PetriNetUnfolderBase]: For 577128/577172 co-relation queries the response was YES. [2024-06-14 14:10:01,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86230 conditions, 12175 events. 8328/12175 cut-off events. For 577128/577172 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 71834 event pairs, 2603 based on Foata normal form. 35/12203 useless extension candidates. Maximal degree in co-relation 86126. Up to 11104 conditions per place. [2024-06-14 14:10:01,966 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 290 selfloop transitions, 81 changer transitions 0/379 dead transitions. [2024-06-14 14:10:01,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 379 transitions, 5556 flow [2024-06-14 14:10:01,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 14:10:01,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 14:10:01,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 211 transitions. [2024-06-14 14:10:01,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5796703296703297 [2024-06-14 14:10:01,968 INFO L175 Difference]: Start difference. First operand has 210 places, 335 transitions, 4328 flow. Second operand 7 states and 211 transitions. [2024-06-14 14:10:01,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 379 transitions, 5556 flow [2024-06-14 14:10:03,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 379 transitions, 5331 flow, removed 49 selfloop flow, removed 3 redundant places. [2024-06-14 14:10:03,146 INFO L231 Difference]: Finished difference. Result has 215 places, 338 transitions, 4332 flow [2024-06-14 14:10:03,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=4110, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4332, PETRI_PLACES=215, PETRI_TRANSITIONS=338} [2024-06-14 14:10:03,146 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 160 predicate places. [2024-06-14 14:10:03,146 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 338 transitions, 4332 flow [2024-06-14 14:10:03,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:10:03,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:10:03,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:10:03,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-14 14:10:03,147 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:10:03,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:10:03,147 INFO L85 PathProgramCache]: Analyzing trace with hash -33450150, now seen corresponding path program 4 times [2024-06-14 14:10:03,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:10:03,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453980583] [2024-06-14 14:10:03,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:10:03,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:10:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:10:03,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:10:03,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:10:03,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453980583] [2024-06-14 14:10:03,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453980583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:10:03,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:10:03,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:10:03,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752692741] [2024-06-14 14:10:03,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:10:03,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:10:03,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:10:03,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:10:03,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:10:03,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 52 [2024-06-14 14:10:03,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 338 transitions, 4332 flow. Second operand has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:10:03,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:10:03,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 52 [2024-06-14 14:10:03,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:10:05,826 INFO L124 PetriNetUnfolderBase]: 8426/12315 cut-off events. [2024-06-14 14:10:05,826 INFO L125 PetriNetUnfolderBase]: For 615678/615680 co-relation queries the response was YES. [2024-06-14 14:10:05,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87479 conditions, 12315 events. 8426/12315 cut-off events. For 615678/615680 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 72756 event pairs, 2578 based on Foata normal form. 18/12326 useless extension candidates. Maximal degree in co-relation 87374. Up to 11404 conditions per place. [2024-06-14 14:10:05,975 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 328 selfloop transitions, 33 changer transitions 0/369 dead transitions. [2024-06-14 14:10:05,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 369 transitions, 5177 flow [2024-06-14 14:10:05,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 14:10:05,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 14:10:05,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 175 transitions. [2024-06-14 14:10:05,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5608974358974359 [2024-06-14 14:10:05,977 INFO L175 Difference]: Start difference. First operand has 215 places, 338 transitions, 4332 flow. Second operand 6 states and 175 transitions. [2024-06-14 14:10:05,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 369 transitions, 5177 flow [2024-06-14 14:10:07,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 369 transitions, 5040 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-14 14:10:07,168 INFO L231 Difference]: Finished difference. Result has 218 places, 340 transitions, 4297 flow [2024-06-14 14:10:07,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=4195, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4297, PETRI_PLACES=218, PETRI_TRANSITIONS=340} [2024-06-14 14:10:07,169 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 163 predicate places. [2024-06-14 14:10:07,169 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 340 transitions, 4297 flow [2024-06-14 14:10:07,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:10:07,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:10:07,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:10:07,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-14 14:10:07,170 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:10:07,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:10:07,171 INFO L85 PathProgramCache]: Analyzing trace with hash -44174910, now seen corresponding path program 5 times [2024-06-14 14:10:07,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:10:07,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794645233] [2024-06-14 14:10:07,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:10:07,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:10:07,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:10:07,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:10:07,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:10:07,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794645233] [2024-06-14 14:10:07,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794645233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:10:07,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:10:07,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:10:07,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692200167] [2024-06-14 14:10:07,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:10:07,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:10:07,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:10:07,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:10:07,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:10:07,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 52 [2024-06-14 14:10:07,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 340 transitions, 4297 flow. Second operand has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:10:07,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:10:07,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 52 [2024-06-14 14:10:07,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:10:09,824 INFO L124 PetriNetUnfolderBase]: 8485/12413 cut-off events. [2024-06-14 14:10:09,824 INFO L125 PetriNetUnfolderBase]: For 637099/637126 co-relation queries the response was YES. [2024-06-14 14:10:09,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88290 conditions, 12413 events. 8485/12413 cut-off events. For 637099/637126 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 73394 event pairs, 2579 based on Foata normal form. 34/12442 useless extension candidates. Maximal degree in co-relation 88184. Up to 11397 conditions per place. [2024-06-14 14:10:09,980 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 334 selfloop transitions, 35 changer transitions 0/377 dead transitions. [2024-06-14 14:10:09,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 377 transitions, 5178 flow [2024-06-14 14:10:09,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 14:10:09,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 14:10:09,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 181 transitions. [2024-06-14 14:10:09,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5801282051282052 [2024-06-14 14:10:09,981 INFO L175 Difference]: Start difference. First operand has 218 places, 340 transitions, 4297 flow. Second operand 6 states and 181 transitions. [2024-06-14 14:10:09,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 377 transitions, 5178 flow [2024-06-14 14:10:11,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 377 transitions, 5108 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-14 14:10:11,437 INFO L231 Difference]: Finished difference. Result has 220 places, 342 transitions, 4341 flow [2024-06-14 14:10:11,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=4227, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4341, PETRI_PLACES=220, PETRI_TRANSITIONS=342} [2024-06-14 14:10:11,437 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 165 predicate places. [2024-06-14 14:10:11,437 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 342 transitions, 4341 flow [2024-06-14 14:10:11,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:10:11,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:10:11,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:10:11,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-14 14:10:11,438 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:10:11,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:10:11,438 INFO L85 PathProgramCache]: Analyzing trace with hash -44501340, now seen corresponding path program 6 times [2024-06-14 14:10:11,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:10:11,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620475724] [2024-06-14 14:10:11,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:10:11,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:10:11,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:10:12,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:10:12,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:10:12,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620475724] [2024-06-14 14:10:12,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620475724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:10:12,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:10:12,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:10:12,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145781410] [2024-06-14 14:10:12,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:10:12,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:10:12,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:10:12,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:10:12,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:10:12,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 52 [2024-06-14 14:10:12,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 342 transitions, 4341 flow. Second operand has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:10:12,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:10:12,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 52 [2024-06-14 14:10:12,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:10:14,081 INFO L124 PetriNetUnfolderBase]: 8453/12356 cut-off events. [2024-06-14 14:10:14,081 INFO L125 PetriNetUnfolderBase]: For 650045/650072 co-relation queries the response was YES. [2024-06-14 14:10:14,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88271 conditions, 12356 events. 8453/12356 cut-off events. For 650045/650072 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 72906 event pairs, 2071 based on Foata normal form. 30/12381 useless extension candidates. Maximal degree in co-relation 88164. Up to 10953 conditions per place. [2024-06-14 14:10:14,237 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 326 selfloop transitions, 51 changer transitions 0/385 dead transitions. [2024-06-14 14:10:14,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 385 transitions, 5260 flow [2024-06-14 14:10:14,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 14:10:14,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 14:10:14,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2024-06-14 14:10:14,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5993589743589743 [2024-06-14 14:10:14,238 INFO L175 Difference]: Start difference. First operand has 220 places, 342 transitions, 4341 flow. Second operand 6 states and 187 transitions. [2024-06-14 14:10:14,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 385 transitions, 5260 flow [2024-06-14 14:10:15,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 385 transitions, 5199 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-14 14:10:15,526 INFO L231 Difference]: Finished difference. Result has 224 places, 344 transitions, 4450 flow [2024-06-14 14:10:15,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=4282, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4450, PETRI_PLACES=224, PETRI_TRANSITIONS=344} [2024-06-14 14:10:15,527 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 169 predicate places. [2024-06-14 14:10:15,527 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 344 transitions, 4450 flow [2024-06-14 14:10:15,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:10:15,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:10:15,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:10:15,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-14 14:10:15,528 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:10:15,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:10:15,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1350040266, now seen corresponding path program 4 times [2024-06-14 14:10:15,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:10:15,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107083472] [2024-06-14 14:10:15,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:10:15,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:10:15,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:10:16,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:10:16,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:10:16,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107083472] [2024-06-14 14:10:16,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107083472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:10:16,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:10:16,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:10:16,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461854931] [2024-06-14 14:10:16,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:10:16,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:10:16,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:10:16,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:10:16,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:10:16,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-14 14:10:16,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 344 transitions, 4450 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:10:16,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:10:16,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-14 14:10:16,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:10:18,250 INFO L124 PetriNetUnfolderBase]: 8062/11878 cut-off events. [2024-06-14 14:10:18,251 INFO L125 PetriNetUnfolderBase]: For 739522/740875 co-relation queries the response was YES. [2024-06-14 14:10:18,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90585 conditions, 11878 events. 8062/11878 cut-off events. For 739522/740875 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 71723 event pairs, 2287 based on Foata normal form. 140/11645 useless extension candidates. Maximal degree in co-relation 90476. Up to 10490 conditions per place. [2024-06-14 14:10:18,392 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 248 selfloop transitions, 112 changer transitions 0/402 dead transitions. [2024-06-14 14:10:18,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 402 transitions, 5794 flow [2024-06-14 14:10:18,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 14:10:18,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 14:10:18,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 251 transitions. [2024-06-14 14:10:18,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6033653846153846 [2024-06-14 14:10:18,393 INFO L175 Difference]: Start difference. First operand has 224 places, 344 transitions, 4450 flow. Second operand 8 states and 251 transitions. [2024-06-14 14:10:18,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 402 transitions, 5794 flow [2024-06-14 14:10:19,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 402 transitions, 5682 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-14 14:10:19,709 INFO L231 Difference]: Finished difference. Result has 227 places, 352 transitions, 4727 flow [2024-06-14 14:10:19,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=4354, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4727, PETRI_PLACES=227, PETRI_TRANSITIONS=352} [2024-06-14 14:10:19,709 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 172 predicate places. [2024-06-14 14:10:19,709 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 352 transitions, 4727 flow [2024-06-14 14:10:19,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:10:19,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:10:19,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:10:19,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-14 14:10:19,710 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:10:19,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:10:19,710 INFO L85 PathProgramCache]: Analyzing trace with hash -363369228, now seen corresponding path program 5 times [2024-06-14 14:10:19,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:10:19,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962313990] [2024-06-14 14:10:19,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:10:19,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:10:19,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:10:20,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:10:20,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:10:20,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962313990] [2024-06-14 14:10:20,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962313990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:10:20,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:10:20,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:10:20,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227338458] [2024-06-14 14:10:20,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:10:20,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:10:20,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:10:20,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:10:20,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:10:20,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-14 14:10:20,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 352 transitions, 4727 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:10:20,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:10:20,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-14 14:10:20,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:10:22,506 INFO L124 PetriNetUnfolderBase]: 8115/11961 cut-off events. [2024-06-14 14:10:22,506 INFO L125 PetriNetUnfolderBase]: For 717635/719018 co-relation queries the response was YES. [2024-06-14 14:10:22,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90589 conditions, 11961 events. 8115/11961 cut-off events. For 717635/719018 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 72362 event pairs, 2287 based on Foata normal form. 168/11756 useless extension candidates. Maximal degree in co-relation 90481. Up to 10545 conditions per place. [2024-06-14 14:10:22,651 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 247 selfloop transitions, 123 changer transitions 0/412 dead transitions. [2024-06-14 14:10:22,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 412 transitions, 6105 flow [2024-06-14 14:10:22,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:10:22,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:10:22,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 273 transitions. [2024-06-14 14:10:22,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-14 14:10:22,652 INFO L175 Difference]: Start difference. First operand has 227 places, 352 transitions, 4727 flow. Second operand 9 states and 273 transitions. [2024-06-14 14:10:22,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 412 transitions, 6105 flow [2024-06-14 14:10:24,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 412 transitions, 5728 flow, removed 53 selfloop flow, removed 5 redundant places. [2024-06-14 14:10:24,433 INFO L231 Difference]: Finished difference. Result has 231 places, 360 transitions, 4762 flow [2024-06-14 14:10:24,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=4394, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4762, PETRI_PLACES=231, PETRI_TRANSITIONS=360} [2024-06-14 14:10:24,433 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 176 predicate places. [2024-06-14 14:10:24,433 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 360 transitions, 4762 flow [2024-06-14 14:10:24,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:10:24,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:10:24,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:10:24,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-14 14:10:24,434 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:10:24,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:10:24,434 INFO L85 PathProgramCache]: Analyzing trace with hash -369030138, now seen corresponding path program 6 times [2024-06-14 14:10:24,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:10:24,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567655064] [2024-06-14 14:10:24,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:10:24,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:10:24,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:10:25,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:10:25,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:10:25,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567655064] [2024-06-14 14:10:25,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567655064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:10:25,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:10:25,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:10:25,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570328186] [2024-06-14 14:10:25,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:10:25,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:10:25,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:10:25,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:10:25,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:10:25,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-14 14:10:25,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 360 transitions, 4762 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:10:25,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:10:25,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-14 14:10:25,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:10:27,143 INFO L124 PetriNetUnfolderBase]: 8084/11913 cut-off events. [2024-06-14 14:10:27,143 INFO L125 PetriNetUnfolderBase]: For 738304/739661 co-relation queries the response was YES. [2024-06-14 14:10:27,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90574 conditions, 11913 events. 8084/11913 cut-off events. For 738304/739661 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 72008 event pairs, 2317 based on Foata normal form. 146/11665 useless extension candidates. Maximal degree in co-relation 90465. Up to 10506 conditions per place. [2024-06-14 14:10:27,273 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 242 selfloop transitions, 112 changer transitions 0/396 dead transitions. [2024-06-14 14:10:27,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 396 transitions, 5918 flow [2024-06-14 14:10:27,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 14:10:27,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 14:10:27,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 194 transitions. [2024-06-14 14:10:27,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6217948717948718 [2024-06-14 14:10:27,274 INFO L175 Difference]: Start difference. First operand has 231 places, 360 transitions, 4762 flow. Second operand 6 states and 194 transitions. [2024-06-14 14:10:27,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 396 transitions, 5918 flow [2024-06-14 14:10:28,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 396 transitions, 5646 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-14 14:10:28,635 INFO L231 Difference]: Finished difference. Result has 232 places, 360 transitions, 4723 flow [2024-06-14 14:10:28,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=4490, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4723, PETRI_PLACES=232, PETRI_TRANSITIONS=360} [2024-06-14 14:10:28,636 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 177 predicate places. [2024-06-14 14:10:28,636 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 360 transitions, 4723 flow [2024-06-14 14:10:28,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:10:28,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:10:28,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:10:28,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-14 14:10:28,636 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:10:28,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:10:28,637 INFO L85 PathProgramCache]: Analyzing trace with hash -368909982, now seen corresponding path program 4 times [2024-06-14 14:10:28,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:10:28,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304971280] [2024-06-14 14:10:28,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:10:28,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:10:28,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:10:29,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:10:29,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:10:29,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304971280] [2024-06-14 14:10:29,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304971280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:10:29,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:10:29,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:10:29,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559776071] [2024-06-14 14:10:29,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:10:29,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:10:29,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:10:29,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:10:29,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:10:29,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 52 [2024-06-14 14:10:29,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 360 transitions, 4723 flow. Second operand has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:10:29,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:10:29,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 52 [2024-06-14 14:10:29,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:10:31,456 INFO L124 PetriNetUnfolderBase]: 8549/12506 cut-off events. [2024-06-14 14:10:31,457 INFO L125 PetriNetUnfolderBase]: For 696335/696379 co-relation queries the response was YES. [2024-06-14 14:10:31,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90578 conditions, 12506 events. 8549/12506 cut-off events. For 696335/696379 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 74095 event pairs, 2614 based on Foata normal form. 35/12534 useless extension candidates. Maximal degree in co-relation 90468. Up to 11500 conditions per place. [2024-06-14 14:10:31,617 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 329 selfloop transitions, 57 changer transitions 0/394 dead transitions. [2024-06-14 14:10:31,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 394 transitions, 5780 flow [2024-06-14 14:10:31,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 14:10:31,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 14:10:31,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2024-06-14 14:10:31,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.592948717948718 [2024-06-14 14:10:31,619 INFO L175 Difference]: Start difference. First operand has 232 places, 360 transitions, 4723 flow. Second operand 6 states and 185 transitions. [2024-06-14 14:10:31,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 394 transitions, 5780 flow [2024-06-14 14:10:33,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 394 transitions, 5532 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-14 14:10:33,484 INFO L231 Difference]: Finished difference. Result has 233 places, 360 transitions, 4605 flow [2024-06-14 14:10:33,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=4477, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4605, PETRI_PLACES=233, PETRI_TRANSITIONS=360} [2024-06-14 14:10:33,485 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 178 predicate places. [2024-06-14 14:10:33,485 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 360 transitions, 4605 flow [2024-06-14 14:10:33,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:10:33,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:10:33,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:10:33,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-14 14:10:33,485 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:10:33,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:10:33,486 INFO L85 PathProgramCache]: Analyzing trace with hash -368910168, now seen corresponding path program 7 times [2024-06-14 14:10:33,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:10:33,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816229541] [2024-06-14 14:10:33,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:10:33,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:10:33,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:10:34,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:10:34,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:10:34,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816229541] [2024-06-14 14:10:34,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816229541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:10:34,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:10:34,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:10:34,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845638375] [2024-06-14 14:10:34,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:10:34,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:10:34,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:10:34,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:10:34,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:10:34,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-14 14:10:34,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 360 transitions, 4605 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:10:34,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:10:34,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-14 14:10:34,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:10:36,193 INFO L124 PetriNetUnfolderBase]: 8073/11906 cut-off events. [2024-06-14 14:10:36,194 INFO L125 PetriNetUnfolderBase]: For 789212/790545 co-relation queries the response was YES. [2024-06-14 14:10:36,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91109 conditions, 11906 events. 8073/11906 cut-off events. For 789212/790545 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 72017 event pairs, 2285 based on Foata normal form. 82/11615 useless extension candidates. Maximal degree in co-relation 90998. Up to 10692 conditions per place. [2024-06-14 14:10:36,553 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 269 selfloop transitions, 77 changer transitions 0/388 dead transitions. [2024-06-14 14:10:36,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 388 transitions, 5369 flow [2024-06-14 14:10:36,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 14:10:36,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 14:10:36,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2024-06-14 14:10:36,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.592948717948718 [2024-06-14 14:10:36,554 INFO L175 Difference]: Start difference. First operand has 233 places, 360 transitions, 4605 flow. Second operand 6 states and 185 transitions. [2024-06-14 14:10:36,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 388 transitions, 5369 flow [2024-06-14 14:10:38,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 388 transitions, 5195 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-14 14:10:38,128 INFO L231 Difference]: Finished difference. Result has 234 places, 360 transitions, 4595 flow [2024-06-14 14:10:38,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=4431, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4595, PETRI_PLACES=234, PETRI_TRANSITIONS=360} [2024-06-14 14:10:38,129 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 179 predicate places. [2024-06-14 14:10:38,129 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 360 transitions, 4595 flow [2024-06-14 14:10:38,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:10:38,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:10:38,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:10:38,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-14 14:10:38,130 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:10:38,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:10:38,130 INFO L85 PathProgramCache]: Analyzing trace with hash 613627578, now seen corresponding path program 5 times [2024-06-14 14:10:38,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:10:38,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570589505] [2024-06-14 14:10:38,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:10:38,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:10:38,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:10:38,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:10:38,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:10:38,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570589505] [2024-06-14 14:10:38,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570589505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:10:38,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:10:38,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:10:38,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121053398] [2024-06-14 14:10:38,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:10:38,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:10:38,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:10:38,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:10:38,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:10:38,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 52 [2024-06-14 14:10:38,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 360 transitions, 4595 flow. Second operand has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:10:38,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:10:38,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 52 [2024-06-14 14:10:38,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:10:40,792 INFO L124 PetriNetUnfolderBase]: 8554/12519 cut-off events. [2024-06-14 14:10:40,792 INFO L125 PetriNetUnfolderBase]: For 746721/746765 co-relation queries the response was YES. [2024-06-14 14:10:40,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91415 conditions, 12519 events. 8554/12519 cut-off events. For 746721/746765 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 74262 event pairs, 2597 based on Foata normal form. 37/12550 useless extension candidates. Maximal degree in co-relation 91303. Up to 11503 conditions per place. [2024-06-14 14:10:40,954 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 329 selfloop transitions, 66 changer transitions 0/403 dead transitions. [2024-06-14 14:10:40,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 403 transitions, 5761 flow [2024-06-14 14:10:40,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 14:10:40,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 14:10:40,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 209 transitions. [2024-06-14 14:10:40,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5741758241758241 [2024-06-14 14:10:40,956 INFO L175 Difference]: Start difference. First operand has 234 places, 360 transitions, 4595 flow. Second operand 7 states and 209 transitions. [2024-06-14 14:10:40,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 403 transitions, 5761 flow [2024-06-14 14:10:42,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 403 transitions, 5551 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-14 14:10:42,852 INFO L231 Difference]: Finished difference. Result has 236 places, 366 transitions, 4642 flow [2024-06-14 14:10:42,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=4387, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4642, PETRI_PLACES=236, PETRI_TRANSITIONS=366} [2024-06-14 14:10:42,853 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 181 predicate places. [2024-06-14 14:10:43,076 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 366 transitions, 4642 flow [2024-06-14 14:10:43,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:10:43,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:10:43,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:10:43,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-14 14:10:43,076 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:10:43,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:10:43,077 INFO L85 PathProgramCache]: Analyzing trace with hash 613621812, now seen corresponding path program 8 times [2024-06-14 14:10:43,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:10:43,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240804937] [2024-06-14 14:10:43,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:10:43,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:10:43,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:10:43,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:10:43,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:10:43,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240804937] [2024-06-14 14:10:43,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240804937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:10:43,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:10:43,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:10:43,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119119522] [2024-06-14 14:10:43,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:10:43,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:10:43,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:10:43,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:10:43,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:10:43,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-14 14:10:43,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 366 transitions, 4642 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:10:43,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:10:43,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-14 14:10:43,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:10:45,825 INFO L124 PetriNetUnfolderBase]: 8080/11920 cut-off events. [2024-06-14 14:10:45,826 INFO L125 PetriNetUnfolderBase]: For 845226/846566 co-relation queries the response was YES. [2024-06-14 14:10:45,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92403 conditions, 11920 events. 8080/11920 cut-off events. For 845226/846566 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 72098 event pairs, 2285 based on Foata normal form. 128/11675 useless extension candidates. Maximal degree in co-relation 92290. Up to 10567 conditions per place. [2024-06-14 14:10:45,969 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 254 selfloop transitions, 105 changer transitions 0/403 dead transitions. [2024-06-14 14:10:45,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 403 transitions, 5650 flow [2024-06-14 14:10:45,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 14:10:45,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 14:10:45,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 196 transitions. [2024-06-14 14:10:45,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6282051282051282 [2024-06-14 14:10:45,970 INFO L175 Difference]: Start difference. First operand has 236 places, 366 transitions, 4642 flow. Second operand 6 states and 196 transitions. [2024-06-14 14:10:45,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 403 transitions, 5650 flow [2024-06-14 14:10:47,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 403 transitions, 5499 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-14 14:10:47,782 INFO L231 Difference]: Finished difference. Result has 238 places, 366 transitions, 4721 flow [2024-06-14 14:10:47,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=4495, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4721, PETRI_PLACES=238, PETRI_TRANSITIONS=366} [2024-06-14 14:10:47,782 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 183 predicate places. [2024-06-14 14:10:47,782 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 366 transitions, 4721 flow [2024-06-14 14:10:47,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:10:47,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:10:47,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:10:47,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-14 14:10:47,783 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:10:47,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:10:47,783 INFO L85 PathProgramCache]: Analyzing trace with hash 613616418, now seen corresponding path program 6 times [2024-06-14 14:10:47,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:10:47,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217395338] [2024-06-14 14:10:47,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:10:47,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:10:47,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:10:48,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:10:48,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:10:48,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217395338] [2024-06-14 14:10:48,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217395338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:10:48,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:10:48,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:10:48,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161038768] [2024-06-14 14:10:48,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:10:48,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:10:48,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:10:48,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:10:48,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:10:48,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 52 [2024-06-14 14:10:48,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 366 transitions, 4721 flow. Second operand has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:10:48,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:10:48,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 52 [2024-06-14 14:10:48,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:10:50,500 INFO L124 PetriNetUnfolderBase]: 8536/12495 cut-off events. [2024-06-14 14:10:50,500 INFO L125 PetriNetUnfolderBase]: For 770675/770719 co-relation queries the response was YES. [2024-06-14 14:10:50,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91819 conditions, 12495 events. 8536/12495 cut-off events. For 770675/770719 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 74152 event pairs, 2613 based on Foata normal form. 35/12523 useless extension candidates. Maximal degree in co-relation 91706. Up to 11482 conditions per place. [2024-06-14 14:10:50,673 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 323 selfloop transitions, 62 changer transitions 0/393 dead transitions. [2024-06-14 14:10:50,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 393 transitions, 5568 flow [2024-06-14 14:10:50,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 14:10:50,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 14:10:50,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 158 transitions. [2024-06-14 14:10:50,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6076923076923076 [2024-06-14 14:10:50,674 INFO L175 Difference]: Start difference. First operand has 238 places, 366 transitions, 4721 flow. Second operand 5 states and 158 transitions. [2024-06-14 14:10:50,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 393 transitions, 5568 flow [2024-06-14 14:10:52,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 393 transitions, 5298 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-14 14:10:52,543 INFO L231 Difference]: Finished difference. Result has 236 places, 366 transitions, 4599 flow [2024-06-14 14:10:52,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=4451, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4599, PETRI_PLACES=236, PETRI_TRANSITIONS=366} [2024-06-14 14:10:52,544 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 181 predicate places. [2024-06-14 14:10:52,544 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 366 transitions, 4599 flow [2024-06-14 14:10:52,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:10:52,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:10:52,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:10:52,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-14 14:10:52,544 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:10:52,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:10:52,544 INFO L85 PathProgramCache]: Analyzing trace with hash 613616232, now seen corresponding path program 9 times [2024-06-14 14:10:52,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:10:52,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809752979] [2024-06-14 14:10:52,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:10:52,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:10:52,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:10:53,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:10:53,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:10:53,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809752979] [2024-06-14 14:10:53,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809752979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:10:53,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:10:53,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:10:53,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435839415] [2024-06-14 14:10:53,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:10:53,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:10:53,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:10:53,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:10:53,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:10:53,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-14 14:10:53,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 366 transitions, 4599 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:10:53,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:10:53,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-14 14:10:53,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:10:55,297 INFO L124 PetriNetUnfolderBase]: 8062/11897 cut-off events. [2024-06-14 14:10:55,298 INFO L125 PetriNetUnfolderBase]: For 838762/840102 co-relation queries the response was YES. [2024-06-14 14:10:55,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91889 conditions, 11897 events. 8062/11897 cut-off events. For 838762/840102 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 72060 event pairs, 2284 based on Foata normal form. 128/11652 useless extension candidates. Maximal degree in co-relation 91776. Up to 10549 conditions per place. [2024-06-14 14:10:55,467 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 259 selfloop transitions, 105 changer transitions 0/408 dead transitions. [2024-06-14 14:10:55,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 408 transitions, 5437 flow [2024-06-14 14:10:55,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 14:10:55,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 14:10:55,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 222 transitions. [2024-06-14 14:10:55,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6098901098901099 [2024-06-14 14:10:55,469 INFO L175 Difference]: Start difference. First operand has 236 places, 366 transitions, 4599 flow. Second operand 7 states and 222 transitions. [2024-06-14 14:10:55,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 408 transitions, 5437 flow [2024-06-14 14:10:57,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 408 transitions, 5261 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-14 14:10:57,201 INFO L231 Difference]: Finished difference. Result has 237 places, 366 transitions, 4655 flow [2024-06-14 14:10:57,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=4423, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4655, PETRI_PLACES=237, PETRI_TRANSITIONS=366} [2024-06-14 14:10:57,201 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 182 predicate places. [2024-06-14 14:10:57,201 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 366 transitions, 4655 flow [2024-06-14 14:10:57,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:10:57,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:10:57,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:10:57,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-14 14:10:57,202 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:10:57,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:10:57,202 INFO L85 PathProgramCache]: Analyzing trace with hash -33447174, now seen corresponding path program 7 times [2024-06-14 14:10:57,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:10:57,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579016189] [2024-06-14 14:10:57,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:10:57,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:10:57,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:10:57,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:10:57,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:10:57,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579016189] [2024-06-14 14:10:57,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579016189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:10:57,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:10:57,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:10:57,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863252503] [2024-06-14 14:10:57,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:10:57,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:10:57,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:10:57,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:10:57,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:10:57,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 52 [2024-06-14 14:10:57,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 366 transitions, 4655 flow. Second operand has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:10:57,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:10:57,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 52 [2024-06-14 14:10:57,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:10:59,918 INFO L124 PetriNetUnfolderBase]: 8541/12505 cut-off events. [2024-06-14 14:10:59,918 INFO L125 PetriNetUnfolderBase]: For 740584/740600 co-relation queries the response was YES. [2024-06-14 14:11:00,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91049 conditions, 12505 events. 8541/12505 cut-off events. For 740584/740600 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 74319 event pairs, 2648 based on Foata normal form. 16/12511 useless extension candidates. Maximal degree in co-relation 90937. Up to 11395 conditions per place. [2024-06-14 14:11:00,068 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 300 selfloop transitions, 91 changer transitions 0/399 dead transitions. [2024-06-14 14:11:00,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 399 transitions, 5771 flow [2024-06-14 14:11:00,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 14:11:00,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 14:11:00,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 178 transitions. [2024-06-14 14:11:00,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5705128205128205 [2024-06-14 14:11:00,069 INFO L175 Difference]: Start difference. First operand has 237 places, 366 transitions, 4655 flow. Second operand 6 states and 178 transitions. [2024-06-14 14:11:00,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 399 transitions, 5771 flow [2024-06-14 14:11:01,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 399 transitions, 5533 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-14 14:11:01,650 INFO L231 Difference]: Finished difference. Result has 236 places, 372 transitions, 4729 flow [2024-06-14 14:11:01,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=4425, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4729, PETRI_PLACES=236, PETRI_TRANSITIONS=372} [2024-06-14 14:11:01,650 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 181 predicate places. [2024-06-14 14:11:01,650 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 372 transitions, 4729 flow [2024-06-14 14:11:01,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:11:01,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:11:01,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:11:01,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-14 14:11:01,651 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:11:01,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:11:01,651 INFO L85 PathProgramCache]: Analyzing trace with hash -44409270, now seen corresponding path program 10 times [2024-06-14 14:11:01,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:11:01,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653076539] [2024-06-14 14:11:01,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:11:01,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:11:01,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:11:02,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:11:02,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:11:02,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653076539] [2024-06-14 14:11:02,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653076539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:11:02,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:11:02,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:11:02,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656995396] [2024-06-14 14:11:02,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:11:02,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:11:02,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:11:02,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:11:02,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:11:02,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-14 14:11:02,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 372 transitions, 4729 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:11:02,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:11:02,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-14 14:11:02,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:11:04,485 INFO L124 PetriNetUnfolderBase]: 8069/11906 cut-off events. [2024-06-14 14:11:04,485 INFO L125 PetriNetUnfolderBase]: For 775650/776985 co-relation queries the response was YES. [2024-06-14 14:11:04,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90808 conditions, 11906 events. 8069/11906 cut-off events. For 775650/776985 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 72145 event pairs, 2283 based on Foata normal form. 151/11684 useless extension candidates. Maximal degree in co-relation 90696. Up to 10457 conditions per place. [2024-06-14 14:11:04,621 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 228 selfloop transitions, 147 changer transitions 0/421 dead transitions. [2024-06-14 14:11:04,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 421 transitions, 5607 flow [2024-06-14 14:11:04,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 14:11:04,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 14:11:04,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 251 transitions. [2024-06-14 14:11:04,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6033653846153846 [2024-06-14 14:11:04,622 INFO L175 Difference]: Start difference. First operand has 236 places, 372 transitions, 4729 flow. Second operand 8 states and 251 transitions. [2024-06-14 14:11:04,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 421 transitions, 5607 flow [2024-06-14 14:11:06,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 421 transitions, 5460 flow, removed 30 selfloop flow, removed 2 redundant places. [2024-06-14 14:11:06,086 INFO L231 Difference]: Finished difference. Result has 242 places, 372 transitions, 4904 flow [2024-06-14 14:11:06,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=4582, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4904, PETRI_PLACES=242, PETRI_TRANSITIONS=372} [2024-06-14 14:11:06,087 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 187 predicate places. [2024-06-14 14:11:06,087 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 372 transitions, 4904 flow [2024-06-14 14:11:06,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:11:06,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:11:06,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:11:06,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-14 14:11:06,087 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:11:06,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:11:06,087 INFO L85 PathProgramCache]: Analyzing trace with hash -44171934, now seen corresponding path program 8 times [2024-06-14 14:11:06,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:11:06,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244546829] [2024-06-14 14:11:06,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:11:06,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:11:06,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:11:06,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:11:06,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:11:06,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244546829] [2024-06-14 14:11:06,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244546829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:11:06,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:11:06,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:11:06,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140907982] [2024-06-14 14:11:06,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:11:06,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:11:06,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:11:06,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:11:06,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:11:06,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 52 [2024-06-14 14:11:06,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 372 transitions, 4904 flow. Second operand has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:11:06,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:11:06,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 52 [2024-06-14 14:11:06,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:11:08,739 INFO L124 PetriNetUnfolderBase]: 8546/12514 cut-off events. [2024-06-14 14:11:08,740 INFO L125 PetriNetUnfolderBase]: For 736831/736875 co-relation queries the response was YES. [2024-06-14 14:11:08,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91320 conditions, 12514 events. 8546/12514 cut-off events. For 736831/736875 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 74392 event pairs, 2611 based on Foata normal form. 35/12542 useless extension candidates. Maximal degree in co-relation 91206. Up to 11398 conditions per place. [2024-06-14 14:11:08,903 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 305 selfloop transitions, 96 changer transitions 0/409 dead transitions. [2024-06-14 14:11:08,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 409 transitions, 6033 flow [2024-06-14 14:11:08,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 14:11:08,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 14:11:08,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 184 transitions. [2024-06-14 14:11:08,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5897435897435898 [2024-06-14 14:11:08,904 INFO L175 Difference]: Start difference. First operand has 242 places, 372 transitions, 4904 flow. Second operand 6 states and 184 transitions. [2024-06-14 14:11:08,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 409 transitions, 6033 flow [2024-06-14 14:11:10,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 409 transitions, 5709 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-14 14:11:10,614 INFO L231 Difference]: Finished difference. Result has 240 places, 376 transitions, 4844 flow [2024-06-14 14:11:10,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=4592, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4844, PETRI_PLACES=240, PETRI_TRANSITIONS=376} [2024-06-14 14:11:10,615 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 185 predicate places. [2024-06-14 14:11:10,615 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 376 transitions, 4844 flow [2024-06-14 14:11:10,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:11:10,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:11:10,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:11:10,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-14 14:11:10,615 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:11:10,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:11:10,615 INFO L85 PathProgramCache]: Analyzing trace with hash -44409084, now seen corresponding path program 9 times [2024-06-14 14:11:10,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:11:10,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672107473] [2024-06-14 14:11:10,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:11:10,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:11:10,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:11:11,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:11:11,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:11:11,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672107473] [2024-06-14 14:11:11,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672107473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:11:11,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:11:11,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:11:11,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337831518] [2024-06-14 14:11:11,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:11:11,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:11:11,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:11:11,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:11:11,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:11:11,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 52 [2024-06-14 14:11:11,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 376 transitions, 4844 flow. Second operand has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:11:11,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:11:11,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 52 [2024-06-14 14:11:11,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:11:13,174 INFO L124 PetriNetUnfolderBase]: 8539/12505 cut-off events. [2024-06-14 14:11:13,175 INFO L125 PetriNetUnfolderBase]: For 680143/680187 co-relation queries the response was YES. [2024-06-14 14:11:13,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89829 conditions, 12505 events. 8539/12505 cut-off events. For 680143/680187 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 74148 event pairs, 2611 based on Foata normal form. 35/12533 useless extension candidates. Maximal degree in co-relation 89715. Up to 11391 conditions per place. [2024-06-14 14:11:13,331 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 306 selfloop transitions, 96 changer transitions 0/410 dead transitions. [2024-06-14 14:11:13,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 410 transitions, 5743 flow [2024-06-14 14:11:13,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 14:11:13,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 14:11:13,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 186 transitions. [2024-06-14 14:11:13,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5961538461538461 [2024-06-14 14:11:13,332 INFO L175 Difference]: Start difference. First operand has 240 places, 376 transitions, 4844 flow. Second operand 6 states and 186 transitions. [2024-06-14 14:11:13,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 410 transitions, 5743 flow [2024-06-14 14:11:14,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 410 transitions, 5555 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-14 14:11:14,717 INFO L231 Difference]: Finished difference. Result has 242 places, 376 transitions, 4867 flow [2024-06-14 14:11:14,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=4656, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4867, PETRI_PLACES=242, PETRI_TRANSITIONS=376} [2024-06-14 14:11:14,718 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 187 predicate places. [2024-06-14 14:11:14,718 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 376 transitions, 4867 flow [2024-06-14 14:11:14,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:11:14,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:11:14,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:11:14,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-14 14:11:14,719 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:11:14,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:11:14,719 INFO L85 PathProgramCache]: Analyzing trace with hash -33050436, now seen corresponding path program 1 times [2024-06-14 14:11:14,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:11:14,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241793641] [2024-06-14 14:11:14,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:11:14,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:11:14,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:11:15,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:11:15,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:11:15,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241793641] [2024-06-14 14:11:15,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241793641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:11:15,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:11:15,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:11:15,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762742990] [2024-06-14 14:11:15,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:11:15,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:11:15,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:11:15,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:11:15,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:11:15,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 52 [2024-06-14 14:11:15,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 376 transitions, 4867 flow. Second operand has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:11:15,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:11:15,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 52 [2024-06-14 14:11:15,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:11:17,390 INFO L124 PetriNetUnfolderBase]: 8507/12460 cut-off events. [2024-06-14 14:11:17,390 INFO L125 PetriNetUnfolderBase]: For 679201/679203 co-relation queries the response was YES. [2024-06-14 14:11:17,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89094 conditions, 12460 events. 8507/12460 cut-off events. For 679201/679203 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 73771 event pairs, 2505 based on Foata normal form. 14/12467 useless extension candidates. Maximal degree in co-relation 88980. Up to 11216 conditions per place. [2024-06-14 14:11:17,565 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 365 selfloop transitions, 41 changer transitions 0/414 dead transitions. [2024-06-14 14:11:17,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 414 transitions, 5840 flow [2024-06-14 14:11:17,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 14:11:17,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 14:11:17,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 178 transitions. [2024-06-14 14:11:17,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5705128205128205 [2024-06-14 14:11:17,566 INFO L175 Difference]: Start difference. First operand has 242 places, 376 transitions, 4867 flow. Second operand 6 states and 178 transitions. [2024-06-14 14:11:17,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 414 transitions, 5840 flow [2024-06-14 14:11:19,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 414 transitions, 5642 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-14 14:11:19,077 INFO L231 Difference]: Finished difference. Result has 243 places, 381 transitions, 4822 flow [2024-06-14 14:11:19,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=4669, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4822, PETRI_PLACES=243, PETRI_TRANSITIONS=381} [2024-06-14 14:11:19,079 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 188 predicate places. [2024-06-14 14:11:19,079 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 381 transitions, 4822 flow [2024-06-14 14:11:19,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:11:19,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:11:19,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:11:19,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-14 14:11:19,080 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:11:19,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:11:19,080 INFO L85 PathProgramCache]: Analyzing trace with hash 599147114, now seen corresponding path program 1 times [2024-06-14 14:11:19,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:11:19,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422588771] [2024-06-14 14:11:19,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:11:19,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:11:19,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:11:19,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:11:19,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:11:19,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422588771] [2024-06-14 14:11:19,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422588771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:11:19,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:11:19,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 14:11:19,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139943386] [2024-06-14 14:11:19,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:11:19,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 14:11:19,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:11:19,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 14:11:19,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-14 14:11:19,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2024-06-14 14:11:19,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 381 transitions, 4822 flow. Second operand has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:11:19,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:11:19,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2024-06-14 14:11:19,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:11:21,794 INFO L124 PetriNetUnfolderBase]: 7752/11549 cut-off events. [2024-06-14 14:11:21,794 INFO L125 PetriNetUnfolderBase]: For 693665/693819 co-relation queries the response was YES. [2024-06-14 14:11:21,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86177 conditions, 11549 events. 7752/11549 cut-off events. For 693665/693819 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 70847 event pairs, 2364 based on Foata normal form. 65/11385 useless extension candidates. Maximal degree in co-relation 86063. Up to 10124 conditions per place. [2024-06-14 14:11:21,954 INFO L140 encePairwiseOnDemand]: 44/52 looper letters, 296 selfloop transitions, 41 changer transitions 0/396 dead transitions. [2024-06-14 14:11:21,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 396 transitions, 5582 flow [2024-06-14 14:11:21,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 14:11:21,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 14:11:21,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-06-14 14:11:21,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6009615384615384 [2024-06-14 14:11:21,955 INFO L175 Difference]: Start difference. First operand has 243 places, 381 transitions, 4822 flow. Second operand 4 states and 125 transitions. [2024-06-14 14:11:21,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 396 transitions, 5582 flow [2024-06-14 14:11:23,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 396 transitions, 5547 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-14 14:11:23,541 INFO L231 Difference]: Finished difference. Result has 246 places, 385 transitions, 4953 flow [2024-06-14 14:11:23,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=4787, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4953, PETRI_PLACES=246, PETRI_TRANSITIONS=385} [2024-06-14 14:11:23,541 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 191 predicate places. [2024-06-14 14:11:23,541 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 385 transitions, 4953 flow [2024-06-14 14:11:23,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:11:23,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:11:23,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:11:23,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-14 14:11:23,542 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:11:23,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:11:23,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1780799916, now seen corresponding path program 2 times [2024-06-14 14:11:23,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:11:23,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130510824] [2024-06-14 14:11:23,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:11:23,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:11:23,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:11:24,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:11:24,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:11:24,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130510824] [2024-06-14 14:11:24,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130510824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:11:24,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:11:24,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 14:11:24,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418461237] [2024-06-14 14:11:24,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:11:24,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 14:11:24,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:11:24,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 14:11:24,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-14 14:11:24,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2024-06-14 14:11:24,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 385 transitions, 4953 flow. Second operand has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:11:24,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:11:24,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2024-06-14 14:11:24,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:11:26,240 INFO L124 PetriNetUnfolderBase]: 7736/11489 cut-off events. [2024-06-14 14:11:26,240 INFO L125 PetriNetUnfolderBase]: For 717427/717581 co-relation queries the response was YES. [2024-06-14 14:11:26,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87807 conditions, 11489 events. 7736/11489 cut-off events. For 717427/717581 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 70068 event pairs, 2364 based on Foata normal form. 65/11325 useless extension candidates. Maximal degree in co-relation 87690. Up to 10096 conditions per place. [2024-06-14 14:11:26,378 INFO L140 encePairwiseOnDemand]: 44/52 looper letters, 297 selfloop transitions, 45 changer transitions 0/401 dead transitions. [2024-06-14 14:11:26,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 401 transitions, 5733 flow [2024-06-14 14:11:26,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 14:11:26,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 14:11:26,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 148 transitions. [2024-06-14 14:11:26,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5692307692307692 [2024-06-14 14:11:26,379 INFO L175 Difference]: Start difference. First operand has 246 places, 385 transitions, 4953 flow. Second operand 5 states and 148 transitions. [2024-06-14 14:11:26,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 401 transitions, 5733 flow [2024-06-14 14:11:27,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 401 transitions, 5596 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-06-14 14:11:27,645 INFO L231 Difference]: Finished difference. Result has 248 places, 389 transitions, 4987 flow [2024-06-14 14:11:27,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=4822, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4987, PETRI_PLACES=248, PETRI_TRANSITIONS=389} [2024-06-14 14:11:27,646 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 193 predicate places. [2024-06-14 14:11:27,646 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 389 transitions, 4987 flow [2024-06-14 14:11:27,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:11:27,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:11:27,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:11:27,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-14 14:11:27,646 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:11:27,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:11:27,646 INFO L85 PathProgramCache]: Analyzing trace with hash 105682952, now seen corresponding path program 1 times [2024-06-14 14:11:27,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:11:27,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875596835] [2024-06-14 14:11:27,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:11:27,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:11:27,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:11:28,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:11:28,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:11:28,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875596835] [2024-06-14 14:11:28,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875596835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:11:28,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:11:28,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:11:28,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789398110] [2024-06-14 14:11:28,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:11:28,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:11:28,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:11:28,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:11:28,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:11:28,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-14 14:11:28,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 389 transitions, 4987 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:11:28,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:11:28,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-14 14:11:28,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:11:30,637 INFO L124 PetriNetUnfolderBase]: 8300/12394 cut-off events. [2024-06-14 14:11:30,637 INFO L125 PetriNetUnfolderBase]: For 714367/714377 co-relation queries the response was YES. [2024-06-14 14:11:30,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92779 conditions, 12394 events. 8300/12394 cut-off events. For 714367/714377 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 75850 event pairs, 2387 based on Foata normal form. 30/12418 useless extension candidates. Maximal degree in co-relation 92661. Up to 10750 conditions per place. [2024-06-14 14:11:30,772 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 385 selfloop transitions, 49 changer transitions 0/445 dead transitions. [2024-06-14 14:11:30,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 445 transitions, 6316 flow [2024-06-14 14:11:30,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 14:11:30,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 14:11:30,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 216 transitions. [2024-06-14 14:11:30,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5934065934065934 [2024-06-14 14:11:30,773 INFO L175 Difference]: Start difference. First operand has 248 places, 389 transitions, 4987 flow. Second operand 7 states and 216 transitions. [2024-06-14 14:11:30,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 445 transitions, 6316 flow [2024-06-14 14:11:32,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 445 transitions, 6183 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-14 14:11:32,163 INFO L231 Difference]: Finished difference. Result has 254 places, 400 transitions, 5131 flow [2024-06-14 14:11:32,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=4854, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5131, PETRI_PLACES=254, PETRI_TRANSITIONS=400} [2024-06-14 14:11:32,163 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 199 predicate places. [2024-06-14 14:11:32,163 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 400 transitions, 5131 flow [2024-06-14 14:11:32,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:11:32,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:11:32,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:11:32,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-14 14:11:32,164 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:11:32,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:11:32,164 INFO L85 PathProgramCache]: Analyzing trace with hash 548518920, now seen corresponding path program 2 times [2024-06-14 14:11:32,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:11:32,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564333747] [2024-06-14 14:11:32,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:11:32,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:11:32,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:11:32,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:11:32,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:11:32,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564333747] [2024-06-14 14:11:32,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564333747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:11:32,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:11:32,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:11:32,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789986722] [2024-06-14 14:11:32,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:11:32,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:11:32,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:11:32,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:11:32,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:11:32,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-14 14:11:32,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 400 transitions, 5131 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:11:32,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:11:32,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-14 14:11:32,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:11:35,240 INFO L124 PetriNetUnfolderBase]: 8640/12906 cut-off events. [2024-06-14 14:11:35,240 INFO L125 PetriNetUnfolderBase]: For 786550/786560 co-relation queries the response was YES. [2024-06-14 14:11:35,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99014 conditions, 12906 events. 8640/12906 cut-off events. For 786550/786560 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 79669 event pairs, 2631 based on Foata normal form. 30/12930 useless extension candidates. Maximal degree in co-relation 98893. Up to 11484 conditions per place. [2024-06-14 14:11:35,698 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 388 selfloop transitions, 45 changer transitions 0/444 dead transitions. [2024-06-14 14:11:35,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 444 transitions, 6394 flow [2024-06-14 14:11:35,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 14:11:35,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 14:11:35,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 213 transitions. [2024-06-14 14:11:35,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5851648351648352 [2024-06-14 14:11:35,700 INFO L175 Difference]: Start difference. First operand has 254 places, 400 transitions, 5131 flow. Second operand 7 states and 213 transitions. [2024-06-14 14:11:35,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 444 transitions, 6394 flow [2024-06-14 14:11:37,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 444 transitions, 6307 flow, removed 22 selfloop flow, removed 2 redundant places. [2024-06-14 14:11:37,335 INFO L231 Difference]: Finished difference. Result has 260 places, 405 transitions, 5243 flow [2024-06-14 14:11:37,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=5048, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5243, PETRI_PLACES=260, PETRI_TRANSITIONS=405} [2024-06-14 14:11:37,336 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 205 predicate places. [2024-06-14 14:11:37,336 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 405 transitions, 5243 flow [2024-06-14 14:11:37,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:11:37,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:11:37,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:11:37,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-14 14:11:37,337 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:11:37,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:11:37,337 INFO L85 PathProgramCache]: Analyzing trace with hash 548666790, now seen corresponding path program 3 times [2024-06-14 14:11:37,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:11:37,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326730621] [2024-06-14 14:11:37,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:11:37,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:11:37,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:11:37,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:11:37,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:11:37,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326730621] [2024-06-14 14:11:37,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326730621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:11:37,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:11:37,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:11:37,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762997559] [2024-06-14 14:11:37,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:11:37,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:11:37,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:11:37,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:11:37,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:11:38,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-14 14:11:38,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 405 transitions, 5243 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:11:38,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:11:38,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-14 14:11:38,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:11:40,407 INFO L124 PetriNetUnfolderBase]: 8568/12802 cut-off events. [2024-06-14 14:11:40,408 INFO L125 PetriNetUnfolderBase]: For 790038/790048 co-relation queries the response was YES. [2024-06-14 14:11:40,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97723 conditions, 12802 events. 8568/12802 cut-off events. For 790038/790048 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 78888 event pairs, 2633 based on Foata normal form. 38/12834 useless extension candidates. Maximal degree in co-relation 97599. Up to 11626 conditions per place. [2024-06-14 14:11:40,600 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 387 selfloop transitions, 42 changer transitions 0/440 dead transitions. [2024-06-14 14:11:40,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 440 transitions, 6225 flow [2024-06-14 14:11:40,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 14:11:40,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 14:11:40,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 208 transitions. [2024-06-14 14:11:40,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-06-14 14:11:40,602 INFO L175 Difference]: Start difference. First operand has 260 places, 405 transitions, 5243 flow. Second operand 7 states and 208 transitions. [2024-06-14 14:11:40,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 440 transitions, 6225 flow [2024-06-14 14:11:42,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 440 transitions, 6136 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-14 14:11:42,536 INFO L231 Difference]: Finished difference. Result has 264 places, 406 transitions, 5266 flow [2024-06-14 14:11:42,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=5158, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5266, PETRI_PLACES=264, PETRI_TRANSITIONS=406} [2024-06-14 14:11:42,537 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 209 predicate places. [2024-06-14 14:11:42,537 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 406 transitions, 5266 flow [2024-06-14 14:11:42,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:11:42,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:11:42,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:11:42,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-14 14:11:42,538 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:11:42,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:11:42,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1155419214, now seen corresponding path program 4 times [2024-06-14 14:11:42,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:11:42,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549607645] [2024-06-14 14:11:42,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:11:42,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:11:42,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:11:43,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:11:43,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:11:43,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549607645] [2024-06-14 14:11:43,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549607645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:11:43,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:11:43,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:11:43,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765272589] [2024-06-14 14:11:43,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:11:43,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:11:43,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:11:43,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:11:43,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:11:43,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-14 14:11:43,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 406 transitions, 5266 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:11:43,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:11:43,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-14 14:11:43,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:11:45,561 INFO L124 PetriNetUnfolderBase]: 8725/13041 cut-off events. [2024-06-14 14:11:45,561 INFO L125 PetriNetUnfolderBase]: For 818943/818953 co-relation queries the response was YES. [2024-06-14 14:11:45,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99585 conditions, 13041 events. 8725/13041 cut-off events. For 818943/818953 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 80711 event pairs, 2641 based on Foata normal form. 40/13077 useless extension candidates. Maximal degree in co-relation 99459. Up to 11898 conditions per place. [2024-06-14 14:11:45,736 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 396 selfloop transitions, 39 changer transitions 0/446 dead transitions. [2024-06-14 14:11:45,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 446 transitions, 6296 flow [2024-06-14 14:11:45,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 14:11:45,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 14:11:45,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 232 transitions. [2024-06-14 14:11:45,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5576923076923077 [2024-06-14 14:11:45,737 INFO L175 Difference]: Start difference. First operand has 264 places, 406 transitions, 5266 flow. Second operand 8 states and 232 transitions. [2024-06-14 14:11:45,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 446 transitions, 6296 flow [2024-06-14 14:11:47,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 446 transitions, 6212 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-14 14:11:47,534 INFO L231 Difference]: Finished difference. Result has 267 places, 408 transitions, 5316 flow [2024-06-14 14:11:47,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=5182, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5316, PETRI_PLACES=267, PETRI_TRANSITIONS=408} [2024-06-14 14:11:47,534 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 212 predicate places. [2024-06-14 14:11:47,534 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 408 transitions, 5316 flow [2024-06-14 14:11:47,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:11:47,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:11:47,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:11:47,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-14 14:11:47,535 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:11:47,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:11:47,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1160781594, now seen corresponding path program 5 times [2024-06-14 14:11:47,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:11:47,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637892710] [2024-06-14 14:11:47,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:11:47,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:11:47,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:11:48,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:11:48,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:11:48,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637892710] [2024-06-14 14:11:48,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637892710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:11:48,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:11:48,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:11:48,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178584677] [2024-06-14 14:11:48,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:11:48,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:11:48,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:11:48,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:11:48,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:11:48,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-14 14:11:48,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 408 transitions, 5316 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:11:48,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:11:48,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-14 14:11:48,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:11:51,351 INFO L124 PetriNetUnfolderBase]: 8816/13202 cut-off events. [2024-06-14 14:11:51,351 INFO L125 PetriNetUnfolderBase]: For 843574/843584 co-relation queries the response was YES. [2024-06-14 14:11:51,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100838 conditions, 13202 events. 8816/13202 cut-off events. For 843574/843584 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 82076 event pairs, 2683 based on Foata normal form. 38/13234 useless extension candidates. Maximal degree in co-relation 100711. Up to 12042 conditions per place. [2024-06-14 14:11:51,550 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 394 selfloop transitions, 35 changer transitions 0/440 dead transitions. [2024-06-14 14:11:51,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 440 transitions, 6318 flow [2024-06-14 14:11:51,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 14:11:51,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 14:11:51,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 183 transitions. [2024-06-14 14:11:51,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5865384615384616 [2024-06-14 14:11:51,552 INFO L175 Difference]: Start difference. First operand has 267 places, 408 transitions, 5316 flow. Second operand 6 states and 183 transitions. [2024-06-14 14:11:51,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 440 transitions, 6318 flow [2024-06-14 14:11:53,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 440 transitions, 6224 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-14 14:11:53,429 INFO L231 Difference]: Finished difference. Result has 267 places, 410 transitions, 5352 flow [2024-06-14 14:11:53,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=5222, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5352, PETRI_PLACES=267, PETRI_TRANSITIONS=410} [2024-06-14 14:11:53,430 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 212 predicate places. [2024-06-14 14:11:53,430 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 410 transitions, 5352 flow [2024-06-14 14:11:53,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:11:53,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:11:53,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:11:53,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-14 14:11:53,430 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:11:53,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:11:53,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1160929464, now seen corresponding path program 6 times [2024-06-14 14:11:53,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:11:53,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53323279] [2024-06-14 14:11:53,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:11:53,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:11:53,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:11:54,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:11:54,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:11:54,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53323279] [2024-06-14 14:11:54,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53323279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:11:54,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:11:54,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:11:54,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591838079] [2024-06-14 14:11:54,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:11:54,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:11:54,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:11:54,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:11:54,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:11:54,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-14 14:11:54,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 410 transitions, 5352 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:11:54,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:11:54,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-14 14:11:54,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:11:56,792 INFO L124 PetriNetUnfolderBase]: 8764/13126 cut-off events. [2024-06-14 14:11:56,792 INFO L125 PetriNetUnfolderBase]: For 831196/831206 co-relation queries the response was YES. [2024-06-14 14:11:56,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99529 conditions, 13126 events. 8764/13126 cut-off events. For 831196/831206 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 81433 event pairs, 2439 based on Foata normal form. 30/13150 useless extension candidates. Maximal degree in co-relation 99401. Up to 11548 conditions per place. [2024-06-14 14:11:56,945 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 394 selfloop transitions, 43 changer transitions 0/448 dead transitions. [2024-06-14 14:11:56,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 448 transitions, 6370 flow [2024-06-14 14:11:56,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 14:11:56,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 14:11:56,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 189 transitions. [2024-06-14 14:11:56,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6057692307692307 [2024-06-14 14:11:56,947 INFO L175 Difference]: Start difference. First operand has 267 places, 410 transitions, 5352 flow. Second operand 6 states and 189 transitions. [2024-06-14 14:11:56,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 448 transitions, 6370 flow [2024-06-14 14:11:58,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 448 transitions, 6262 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-14 14:11:58,571 INFO L231 Difference]: Finished difference. Result has 270 places, 412 transitions, 5380 flow [2024-06-14 14:11:58,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=5248, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5380, PETRI_PLACES=270, PETRI_TRANSITIONS=412} [2024-06-14 14:11:58,572 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 215 predicate places. [2024-06-14 14:11:58,572 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 412 transitions, 5380 flow [2024-06-14 14:11:58,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:11:58,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:11:58,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:11:58,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-14 14:11:58,572 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:11:58,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:11:58,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1155204012, now seen corresponding path program 1 times [2024-06-14 14:11:58,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:11:58,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253778373] [2024-06-14 14:11:58,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:11:58,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:11:58,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:11:59,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:11:59,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:11:59,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253778373] [2024-06-14 14:11:59,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253778373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:11:59,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:11:59,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:11:59,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318157685] [2024-06-14 14:11:59,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:11:59,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:11:59,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:11:59,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:11:59,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:11:59,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-14 14:11:59,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 412 transitions, 5380 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:11:59,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:11:59,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-14 14:11:59,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:12:01,919 INFO L124 PetriNetUnfolderBase]: 8713/13045 cut-off events. [2024-06-14 14:12:01,919 INFO L125 PetriNetUnfolderBase]: For 825097/825107 co-relation queries the response was YES. [2024-06-14 14:12:02,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98303 conditions, 13045 events. 8713/13045 cut-off events. For 825097/825107 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 80662 event pairs, 2518 based on Foata normal form. 32/13073 useless extension candidates. Maximal degree in co-relation 98173. Up to 11476 conditions per place. [2024-06-14 14:12:02,160 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 396 selfloop transitions, 48 changer transitions 0/455 dead transitions. [2024-06-14 14:12:02,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 455 transitions, 6440 flow [2024-06-14 14:12:02,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 14:12:02,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 14:12:02,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 235 transitions. [2024-06-14 14:12:02,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5649038461538461 [2024-06-14 14:12:02,161 INFO L175 Difference]: Start difference. First operand has 270 places, 412 transitions, 5380 flow. Second operand 8 states and 235 transitions. [2024-06-14 14:12:02,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 455 transitions, 6440 flow [2024-06-14 14:12:03,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 455 transitions, 6287 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-14 14:12:03,676 INFO L231 Difference]: Finished difference. Result has 273 places, 414 transitions, 5374 flow [2024-06-14 14:12:03,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=5227, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5374, PETRI_PLACES=273, PETRI_TRANSITIONS=414} [2024-06-14 14:12:03,677 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 218 predicate places. [2024-06-14 14:12:03,677 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 414 transitions, 5374 flow [2024-06-14 14:12:03,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:12:03,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:12:03,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:12:03,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-14 14:12:03,677 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:12:03,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:12:03,678 INFO L85 PathProgramCache]: Analyzing trace with hash -2033060402, now seen corresponding path program 1 times [2024-06-14 14:12:03,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:12:03,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584799865] [2024-06-14 14:12:03,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:12:03,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:12:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:12:04,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:12:04,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:12:04,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584799865] [2024-06-14 14:12:04,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584799865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:12:04,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:12:04,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:12:04,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740027522] [2024-06-14 14:12:04,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:12:04,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:12:04,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:12:04,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:12:04,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:12:04,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2024-06-14 14:12:04,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 414 transitions, 5374 flow. Second operand has 8 states, 8 states have (on average 20.25) internal successors, (162), 8 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:12:04,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:12:04,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2024-06-14 14:12:04,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:12:06,967 INFO L124 PetriNetUnfolderBase]: 8415/12773 cut-off events. [2024-06-14 14:12:06,967 INFO L125 PetriNetUnfolderBase]: For 826677/826682 co-relation queries the response was YES. [2024-06-14 14:12:07,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96315 conditions, 12773 events. 8415/12773 cut-off events. For 826677/826682 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 80870 event pairs, 2583 based on Foata normal form. 9/12751 useless extension candidates. Maximal degree in co-relation 96185. Up to 11470 conditions per place. [2024-06-14 14:12:07,141 INFO L140 encePairwiseOnDemand]: 44/52 looper letters, 353 selfloop transitions, 50 changer transitions 0/441 dead transitions. [2024-06-14 14:12:07,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 441 transitions, 6500 flow [2024-06-14 14:12:07,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 14:12:07,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 14:12:07,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 197 transitions. [2024-06-14 14:12:07,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5412087912087912 [2024-06-14 14:12:07,142 INFO L175 Difference]: Start difference. First operand has 273 places, 414 transitions, 5374 flow. Second operand 7 states and 197 transitions. [2024-06-14 14:12:07,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 441 transitions, 6500 flow [2024-06-14 14:12:08,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 441 transitions, 6379 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-14 14:12:08,912 INFO L231 Difference]: Finished difference. Result has 274 places, 422 transitions, 5533 flow [2024-06-14 14:12:08,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=5253, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5533, PETRI_PLACES=274, PETRI_TRANSITIONS=422} [2024-06-14 14:12:08,913 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 219 predicate places. [2024-06-14 14:12:08,913 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 422 transitions, 5533 flow [2024-06-14 14:12:08,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.25) internal successors, (162), 8 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:12:08,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:12:08,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:12:08,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-14 14:12:08,913 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:12:08,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:12:08,913 INFO L85 PathProgramCache]: Analyzing trace with hash -2032940432, now seen corresponding path program 2 times [2024-06-14 14:12:08,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:12:08,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623232449] [2024-06-14 14:12:08,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:12:08,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:12:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:12:09,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:12:09,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:12:09,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623232449] [2024-06-14 14:12:09,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623232449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:12:09,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:12:09,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:12:09,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593140080] [2024-06-14 14:12:09,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:12:09,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:12:09,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:12:09,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:12:09,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:12:09,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2024-06-14 14:12:09,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 422 transitions, 5533 flow. Second operand has 8 states, 8 states have (on average 20.25) internal successors, (162), 8 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:12:09,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:12:09,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2024-06-14 14:12:09,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:12:12,295 INFO L124 PetriNetUnfolderBase]: 8399/12753 cut-off events. [2024-06-14 14:12:12,295 INFO L125 PetriNetUnfolderBase]: For 852098/852103 co-relation queries the response was YES. [2024-06-14 14:12:12,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97144 conditions, 12753 events. 8399/12753 cut-off events. For 852098/852103 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 80852 event pairs, 2591 based on Foata normal form. 9/12731 useless extension candidates. Maximal degree in co-relation 97013. Up to 11470 conditions per place. [2024-06-14 14:12:12,464 INFO L140 encePairwiseOnDemand]: 44/52 looper letters, 354 selfloop transitions, 44 changer transitions 0/436 dead transitions. [2024-06-14 14:12:12,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 436 transitions, 6365 flow [2024-06-14 14:12:12,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 14:12:12,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 14:12:12,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2024-06-14 14:12:12,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6153846153846154 [2024-06-14 14:12:12,465 INFO L175 Difference]: Start difference. First operand has 274 places, 422 transitions, 5533 flow. Second operand 4 states and 128 transitions. [2024-06-14 14:12:12,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 436 transitions, 6365 flow [2024-06-14 14:12:14,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 436 transitions, 6127 flow, removed 82 selfloop flow, removed 4 redundant places. [2024-06-14 14:12:14,303 INFO L231 Difference]: Finished difference. Result has 274 places, 422 transitions, 5404 flow [2024-06-14 14:12:14,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=5295, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=5404, PETRI_PLACES=274, PETRI_TRANSITIONS=422} [2024-06-14 14:12:14,303 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 219 predicate places. [2024-06-14 14:12:14,303 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 422 transitions, 5404 flow [2024-06-14 14:12:14,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.25) internal successors, (162), 8 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:12:14,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:12:14,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:12:14,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-14 14:12:14,304 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:12:14,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:12:14,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1469060922, now seen corresponding path program 1 times [2024-06-14 14:12:14,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:12:14,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256225203] [2024-06-14 14:12:14,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:12:14,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:12:14,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:12:15,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:12:15,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:12:15,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256225203] [2024-06-14 14:12:15,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256225203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:12:15,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:12:15,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 14:12:15,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133453999] [2024-06-14 14:12:15,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:12:15,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 14:12:15,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:12:15,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 14:12:15,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-14 14:12:15,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2024-06-14 14:12:15,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 422 transitions, 5404 flow. Second operand has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:12:15,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:12:15,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2024-06-14 14:12:15,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:12:17,688 INFO L124 PetriNetUnfolderBase]: 8575/12760 cut-off events. [2024-06-14 14:12:17,688 INFO L125 PetriNetUnfolderBase]: For 947745/947889 co-relation queries the response was YES. [2024-06-14 14:12:17,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98871 conditions, 12760 events. 8575/12760 cut-off events. For 947745/947889 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 79303 event pairs, 2443 based on Foata normal form. 46/12573 useless extension candidates. Maximal degree in co-relation 98740. Up to 11396 conditions per place. [2024-06-14 14:12:17,844 INFO L140 encePairwiseOnDemand]: 45/52 looper letters, 359 selfloop transitions, 21 changer transitions 0/440 dead transitions. [2024-06-14 14:12:17,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 440 transitions, 6271 flow [2024-06-14 14:12:17,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 14:12:17,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 14:12:17,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2024-06-14 14:12:17,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5615384615384615 [2024-06-14 14:12:17,845 INFO L175 Difference]: Start difference. First operand has 274 places, 422 transitions, 5404 flow. Second operand 5 states and 146 transitions. [2024-06-14 14:12:17,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 440 transitions, 6271 flow [2024-06-14 14:12:19,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 440 transitions, 6183 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-14 14:12:19,117 INFO L231 Difference]: Finished difference. Result has 276 places, 425 transitions, 5416 flow [2024-06-14 14:12:19,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=5316, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5416, PETRI_PLACES=276, PETRI_TRANSITIONS=425} [2024-06-14 14:12:19,118 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 221 predicate places. [2024-06-14 14:12:19,118 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 425 transitions, 5416 flow [2024-06-14 14:12:19,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:12:19,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:12:19,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:12:19,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-14 14:12:19,118 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:12:19,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:12:19,118 INFO L85 PathProgramCache]: Analyzing trace with hash -565904960, now seen corresponding path program 1 times [2024-06-14 14:12:19,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:12:19,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949773344] [2024-06-14 14:12:19,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:12:19,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:12:19,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:12:19,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:12:19,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:12:19,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949773344] [2024-06-14 14:12:19,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949773344] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:12:19,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:12:19,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 14:12:19,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452588742] [2024-06-14 14:12:19,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:12:19,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 14:12:19,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:12:19,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 14:12:19,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-06-14 14:12:19,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 52 [2024-06-14 14:12:19,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 425 transitions, 5416 flow. Second operand has 9 states, 9 states have (on average 18.0) internal successors, (162), 9 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:12:19,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:12:19,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 52 [2024-06-14 14:12:19,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:12:22,539 INFO L124 PetriNetUnfolderBase]: 9414/13802 cut-off events. [2024-06-14 14:12:22,539 INFO L125 PetriNetUnfolderBase]: For 897385/897422 co-relation queries the response was YES. [2024-06-14 14:12:22,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104020 conditions, 13802 events. 9414/13802 cut-off events. For 897385/897422 co-relation queries the response was YES. Maximal size of possible extension queue 605. Compared 83642 event pairs, 2696 based on Foata normal form. 25/13819 useless extension candidates. Maximal degree in co-relation 103888. Up to 12220 conditions per place. [2024-06-14 14:12:22,736 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 375 selfloop transitions, 143 changer transitions 0/526 dead transitions. [2024-06-14 14:12:22,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 526 transitions, 7547 flow [2024-06-14 14:12:22,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 14:12:22,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 14:12:22,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 245 transitions. [2024-06-14 14:12:22,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5889423076923077 [2024-06-14 14:12:22,738 INFO L175 Difference]: Start difference. First operand has 276 places, 425 transitions, 5416 flow. Second operand 8 states and 245 transitions. [2024-06-14 14:12:22,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 526 transitions, 7547 flow [2024-06-14 14:12:24,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 526 transitions, 7469 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-14 14:12:24,514 INFO L231 Difference]: Finished difference. Result has 284 places, 466 transitions, 6247 flow [2024-06-14 14:12:24,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=5340, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6247, PETRI_PLACES=284, PETRI_TRANSITIONS=466} [2024-06-14 14:12:24,514 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 229 predicate places. [2024-06-14 14:12:24,514 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 466 transitions, 6247 flow [2024-06-14 14:12:24,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.0) internal successors, (162), 9 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:12:24,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:12:24,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:12:24,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-14 14:12:24,515 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:12:24,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:12:24,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1480311908, now seen corresponding path program 2 times [2024-06-14 14:12:24,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:12:24,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062256079] [2024-06-14 14:12:24,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:12:24,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:12:24,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:12:25,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:12:25,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:12:25,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062256079] [2024-06-14 14:12:25,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062256079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:12:25,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:12:25,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 14:12:25,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916355611] [2024-06-14 14:12:25,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:12:25,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 14:12:25,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:12:25,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 14:12:25,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-14 14:12:25,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 52 [2024-06-14 14:12:25,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 466 transitions, 6247 flow. Second operand has 9 states, 9 states have (on average 18.0) internal successors, (162), 9 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:12:25,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:12:25,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 52 [2024-06-14 14:12:25,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:12:27,965 INFO L124 PetriNetUnfolderBase]: 9453/13870 cut-off events. [2024-06-14 14:12:27,965 INFO L125 PetriNetUnfolderBase]: For 941201/941245 co-relation queries the response was YES. [2024-06-14 14:12:28,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107880 conditions, 13870 events. 9453/13870 cut-off events. For 941201/941245 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 84119 event pairs, 2642 based on Foata normal form. 35/13898 useless extension candidates. Maximal degree in co-relation 107744. Up to 12656 conditions per place. [2024-06-14 14:12:28,146 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 406 selfloop transitions, 105 changer transitions 0/519 dead transitions. [2024-06-14 14:12:28,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 519 transitions, 7752 flow [2024-06-14 14:12:28,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 14:12:28,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 14:12:28,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 238 transitions. [2024-06-14 14:12:28,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5721153846153846 [2024-06-14 14:12:28,147 INFO L175 Difference]: Start difference. First operand has 284 places, 466 transitions, 6247 flow. Second operand 8 states and 238 transitions. [2024-06-14 14:12:28,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 519 transitions, 7752 flow [2024-06-14 14:12:29,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 519 transitions, 7490 flow, removed 94 selfloop flow, removed 2 redundant places. [2024-06-14 14:12:29,871 INFO L231 Difference]: Finished difference. Result has 291 places, 475 transitions, 6367 flow [2024-06-14 14:12:29,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=6041, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6367, PETRI_PLACES=291, PETRI_TRANSITIONS=475} [2024-06-14 14:12:29,871 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 236 predicate places. [2024-06-14 14:12:29,871 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 475 transitions, 6367 flow [2024-06-14 14:12:29,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.0) internal successors, (162), 9 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:12:29,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:12:29,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:12:29,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-14 14:12:29,872 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 14:12:29,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:12:29,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1480317488, now seen corresponding path program 3 times [2024-06-14 14:12:29,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:12:29,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59972731] [2024-06-14 14:12:29,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:12:29,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:12:29,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat