./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix008_power.oepc_pso.oepc_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix008_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb4cb34f 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/mix008_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/protection/mix008_power.oepc_pso.oepc_rmo.oepc.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-eb4cb34-m [2024-06-21 16:15:56,548 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 16:15:56,612 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 16:15:56,617 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 16:15:56,618 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 16:15:56,641 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 16:15:56,641 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 16:15:56,642 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 16:15:56,642 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 16:15:56,645 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 16:15:56,646 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 16:15:56,646 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 16:15:56,647 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 16:15:56,648 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 16:15:56,648 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 16:15:56,648 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 16:15:56,648 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 16:15:56,649 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 16:15:56,649 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 16:15:56,649 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 16:15:56,649 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 16:15:56,650 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 16:15:56,650 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 16:15:56,650 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 16:15:56,650 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 16:15:56,651 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 16:15:56,651 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 16:15:56,651 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 16:15:56,652 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 16:15:56,652 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 16:15:56,653 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 16:15:56,653 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 16:15:56,654 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 16:15:56,654 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 16:15:56,654 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 16:15:56,654 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 16:15:56,655 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 16:15:56,655 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 16:15:56,655 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 16:15:56,655 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 16:15:56,655 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 16:15:56,656 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 16:15:56,656 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 16:15:56,656 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 16:15:56,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 16:15:56,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 16:15:56,892 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 16:15:56,893 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 16:15:56,894 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 16:15:56,894 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix008_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-21 16:15:57,106 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 16:15:57,106 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 16:15:57,107 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix008_power.oepc_pso.oepc_rmo.oepc.i [2024-06-21 16:15:58,103 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 16:15:58,358 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 16:15:58,361 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix008_power.oepc_pso.oepc_rmo.oepc.i [2024-06-21 16:15:58,377 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a453d11e/9cf3c01e631846399a8fb5a56e33afe0/FLAGd870d19bb [2024-06-21 16:15:58,390 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a453d11e/9cf3c01e631846399a8fb5a56e33afe0 [2024-06-21 16:15:58,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 16:15:58,392 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 16:15:58,394 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 16:15:58,394 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 16:15:58,398 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 16:15:58,398 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 04:15:57" (1/2) ... [2024-06-21 16:15:58,399 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@300717b2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:15:58, skipping insertion in model container [2024-06-21 16:15:58,399 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 04:15:57" (1/2) ... [2024-06-21 16:15:58,401 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6be1cdcc and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:15:58, skipping insertion in model container [2024-06-21 16:15:58,401 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 04:15:58" (2/2) ... [2024-06-21 16:15:58,401 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@300717b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:15:58, skipping insertion in model container [2024-06-21 16:15:58,401 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 04:15:58" (2/2) ... [2024-06-21 16:15:58,401 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 16:15:58,504 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 16:15:58,505 INFO L97 edCorrectnessWitness]: Location invariant before [L876-L876] ((((((((((((((((((((((! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-06-21 16:15:58,506 INFO L97 edCorrectnessWitness]: Location invariant before [L874-L874] ((((((((((((((((((((((! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-06-21 16:15:58,506 INFO L97 edCorrectnessWitness]: Location invariant before [L877-L877] ((((((((((((((((((((((! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-06-21 16:15:58,506 INFO L97 edCorrectnessWitness]: Location invariant before [L872-L872] ((((((((((((((((((((((! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-06-21 16:15:58,506 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 16:15:58,507 INFO L106 edCorrectnessWitness]: ghost_update [L870-L870] multithreaded = 1; [2024-06-21 16:15:58,547 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 16:15:58,867 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 16:15:58,876 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-21 16:15:59,023 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 16:15:59,088 INFO L206 MainTranslator]: Completed translation [2024-06-21 16:15:59,089 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:15:59 WrapperNode [2024-06-21 16:15:59,089 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 16:15:59,090 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 16:15:59,090 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 16:15:59,090 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 16:15:59,095 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:15:59" (1/1) ... [2024-06-21 16:15:59,120 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:15:59" (1/1) ... [2024-06-21 16:15:59,151 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 139 [2024-06-21 16:15:59,152 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 16:15:59,152 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 16:15:59,152 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 16:15:59,153 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 16:15:59,169 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:15:59" (1/1) ... [2024-06-21 16:15:59,170 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:15:59" (1/1) ... [2024-06-21 16:15:59,174 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:15:59" (1/1) ... [2024-06-21 16:15:59,197 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]. [2024-06-21 16:15:59,208 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:15:59" (1/1) ... [2024-06-21 16:15:59,208 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:15:59" (1/1) ... [2024-06-21 16:15:59,227 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:15:59" (1/1) ... [2024-06-21 16:15:59,229 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:15:59" (1/1) ... [2024-06-21 16:15:59,231 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:15:59" (1/1) ... [2024-06-21 16:15:59,232 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:15:59" (1/1) ... [2024-06-21 16:15:59,235 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 16:15:59,235 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 16:15:59,236 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 16:15:59,236 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 16:15:59,236 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:15:59" (1/1) ... [2024-06-21 16:15:59,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 16:15:59,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 16:15:59,273 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) [2024-06-21 16:15:59,298 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 [2024-06-21 16:15:59,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 16:15:59,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 16:15:59,321 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-21 16:15:59,321 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-21 16:15:59,321 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-21 16:15:59,321 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-21 16:15:59,322 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-21 16:15:59,322 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-21 16:15:59,322 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-21 16:15:59,322 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-21 16:15:59,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 16:15:59,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 16:15:59,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 16:15:59,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 16:15:59,324 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-21 16:15:59,498 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 16:15:59,499 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 16:15:59,868 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 16:15:59,868 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 16:16:00,010 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 16:16:00,010 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-21 16:16:00,011 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 04:16:00 BoogieIcfgContainer [2024-06-21 16:16:00,011 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 16:16:00,012 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 16:16:00,012 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 16:16:00,015 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 16:16:00,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 04:15:57" (1/4) ... [2024-06-21 16:16:00,015 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75c298e3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 04:16:00, skipping insertion in model container [2024-06-21 16:16:00,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 04:15:58" (2/4) ... [2024-06-21 16:16:00,015 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75c298e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 04:16:00, skipping insertion in model container [2024-06-21 16:16:00,016 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:15:59" (3/4) ... [2024-06-21 16:16:00,016 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75c298e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 04:16:00, skipping insertion in model container [2024-06-21 16:16:00,016 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 04:16:00" (4/4) ... [2024-06-21 16:16:00,017 INFO L112 eAbstractionObserver]: Analyzing ICFG mix008_power.oepc_pso.oepc_rmo.oepc.i [2024-06-21 16:16:00,030 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 16:16:00,030 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-21 16:16:00,030 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 16:16:00,065 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-21 16:16:00,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 53 transitions, 122 flow [2024-06-21 16:16:00,106 INFO L124 PetriNetUnfolderBase]: 0/49 cut-off events. [2024-06-21 16:16:00,107 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 16:16:00,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 49 events. 0/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 90 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-21 16:16:00,109 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 53 transitions, 122 flow [2024-06-21 16:16:00,111 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 43 transitions, 98 flow [2024-06-21 16:16:00,117 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 16:16:00,121 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;@619aa58a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 16:16:00,122 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-21 16:16:00,124 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 16:16:00,124 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-21 16:16:00,124 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 16:16:00,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:16:00,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 16:16:00,125 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)] === [2024-06-21 16:16:00,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:16:00,159 INFO L85 PathProgramCache]: Analyzing trace with hash 406884211, now seen corresponding path program 1 times [2024-06-21 16:16:00,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:16:00,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832882228] [2024-06-21 16:16:00,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:16:00,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:16:00,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:16:00,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:16:00,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:16:00,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832882228] [2024-06-21 16:16:00,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832882228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:16:00,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:16:00,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 16:16:00,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970299732] [2024-06-21 16:16:00,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:16:00,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 16:16:00,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:16:00,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 16:16:00,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 16:16:01,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-21 16:16:01,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:16:01,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:16:01,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-21 16:16:01,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:16:02,594 INFO L124 PetriNetUnfolderBase]: 11639/16285 cut-off events. [2024-06-21 16:16:02,595 INFO L125 PetriNetUnfolderBase]: For 220/220 co-relation queries the response was YES. [2024-06-21 16:16:02,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32501 conditions, 16285 events. 11639/16285 cut-off events. For 220/220 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 91952 event pairs, 9112 based on Foata normal form. 1/15903 useless extension candidates. Maximal degree in co-relation 32488. Up to 15753 conditions per place. [2024-06-21 16:16:02,695 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 44 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-06-21 16:16:02,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 233 flow [2024-06-21 16:16:02,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 16:16:02,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 16:16:02,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-06-21 16:16:02,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6163522012578616 [2024-06-21 16:16:02,707 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 98 flow. Second operand 3 states and 98 transitions. [2024-06-21 16:16:02,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 233 flow [2024-06-21 16:16:02,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 57 transitions, 226 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-21 16:16:02,712 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 133 flow [2024-06-21 16:16:02,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-06-21 16:16:02,716 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2024-06-21 16:16:02,716 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 133 flow [2024-06-21 16:16:02,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:16:02,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:16:02,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:16:02,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 16:16:02,717 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)] === [2024-06-21 16:16:02,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:16:02,717 INFO L85 PathProgramCache]: Analyzing trace with hash 173756562, now seen corresponding path program 1 times [2024-06-21 16:16:02,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:16:02,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947504532] [2024-06-21 16:16:02,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:16:02,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:16:02,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:16:03,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:16:03,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:16:03,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947504532] [2024-06-21 16:16:03,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947504532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:16:03,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:16:03,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 16:16:03,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439775258] [2024-06-21 16:16:03,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:16:03,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 16:16:03,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:16:03,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 16:16:03,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-21 16:16:03,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-21 16:16:03,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:16:03,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:16:03,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-21 16:16:03,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:16:04,784 INFO L124 PetriNetUnfolderBase]: 11629/16271 cut-off events. [2024-06-21 16:16:04,784 INFO L125 PetriNetUnfolderBase]: For 3010/3010 co-relation queries the response was YES. [2024-06-21 16:16:04,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36480 conditions, 16271 events. 11629/16271 cut-off events. For 3010/3010 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 91906 event pairs, 8311 based on Foata normal form. 4/16111 useless extension candidates. Maximal degree in co-relation 36468. Up to 15718 conditions per place. [2024-06-21 16:16:04,881 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 54 selfloop transitions, 9 changer transitions 0/71 dead transitions. [2024-06-21 16:16:04,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 71 transitions, 325 flow [2024-06-21 16:16:04,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 16:16:04,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 16:16:04,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2024-06-21 16:16:04,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5990566037735849 [2024-06-21 16:16:04,883 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 133 flow. Second operand 4 states and 127 transitions. [2024-06-21 16:16:04,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 71 transitions, 325 flow [2024-06-21 16:16:04,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 71 transitions, 320 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 16:16:04,885 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 181 flow [2024-06-21 16:16:04,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-06-21 16:16:04,886 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2024-06-21 16:16:04,886 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 181 flow [2024-06-21 16:16:04,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:16:04,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:16:04,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:16:04,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 16:16:04,887 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)] === [2024-06-21 16:16:04,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:16:04,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1091487866, now seen corresponding path program 1 times [2024-06-21 16:16:04,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:16:04,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603155009] [2024-06-21 16:16:04,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:16:04,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:16:04,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:16:05,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:16:05,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:16:05,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603155009] [2024-06-21 16:16:05,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603155009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:16:05,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:16:05,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 16:16:05,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372225961] [2024-06-21 16:16:05,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:16:05,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 16:16:05,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:16:05,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 16:16:05,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-21 16:16:05,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-21 16:16:05,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 181 flow. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:16:05,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:16:05,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-21 16:16:05,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:16:07,005 INFO L124 PetriNetUnfolderBase]: 11647/16407 cut-off events. [2024-06-21 16:16:07,006 INFO L125 PetriNetUnfolderBase]: For 8616/8616 co-relation queries the response was YES. [2024-06-21 16:16:07,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40640 conditions, 16407 events. 11647/16407 cut-off events. For 8616/8616 co-relation queries the response was YES. Maximal size of possible extension queue 599. Compared 93428 event pairs, 6983 based on Foata normal form. 7/16269 useless extension candidates. Maximal degree in co-relation 40626. Up to 15639 conditions per place. [2024-06-21 16:16:07,096 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 72 selfloop transitions, 21 changer transitions 0/101 dead transitions. [2024-06-21 16:16:07,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 101 transitions, 541 flow [2024-06-21 16:16:07,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 16:16:07,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 16:16:07,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 166 transitions. [2024-06-21 16:16:07,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6264150943396226 [2024-06-21 16:16:07,099 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 181 flow. Second operand 5 states and 166 transitions. [2024-06-21 16:16:07,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 101 transitions, 541 flow [2024-06-21 16:16:07,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 101 transitions, 522 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-21 16:16:07,104 INFO L231 Difference]: Finished difference. Result has 63 places, 65 transitions, 312 flow [2024-06-21 16:16:07,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=312, PETRI_PLACES=63, PETRI_TRANSITIONS=65} [2024-06-21 16:16:07,105 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 7 predicate places. [2024-06-21 16:16:07,105 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 65 transitions, 312 flow [2024-06-21 16:16:07,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:16:07,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:16:07,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:16:07,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 16:16:07,107 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:16:07,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:16:07,107 INFO L85 PathProgramCache]: Analyzing trace with hash 501495559, now seen corresponding path program 1 times [2024-06-21 16:16:07,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:16:07,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149033272] [2024-06-21 16:16:07,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:16:07,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:16:07,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:16:08,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:16:08,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:16:08,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149033272] [2024-06-21 16:16:08,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149033272] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:16:08,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:16:08,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 16:16:08,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706360929] [2024-06-21 16:16:08,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:16:08,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 16:16:08,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:16:08,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 16:16:08,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 16:16:08,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-21 16:16:08,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 65 transitions, 312 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:16:08,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:16:08,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-21 16:16:08,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:16:09,805 INFO L124 PetriNetUnfolderBase]: 11665/16436 cut-off events. [2024-06-21 16:16:09,809 INFO L125 PetriNetUnfolderBase]: For 20007/20011 co-relation queries the response was YES. [2024-06-21 16:16:09,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46886 conditions, 16436 events. 11665/16436 cut-off events. For 20007/20011 co-relation queries the response was YES. Maximal size of possible extension queue 599. Compared 93642 event pairs, 6185 based on Foata normal form. 11/16300 useless extension candidates. Maximal degree in co-relation 46869. Up to 15625 conditions per place. [2024-06-21 16:16:09,923 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 82 selfloop transitions, 26 changer transitions 0/116 dead transitions. [2024-06-21 16:16:09,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 116 transitions, 710 flow [2024-06-21 16:16:09,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:16:09,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:16:09,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 196 transitions. [2024-06-21 16:16:09,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6163522012578616 [2024-06-21 16:16:09,925 INFO L175 Difference]: Start difference. First operand has 63 places, 65 transitions, 312 flow. Second operand 6 states and 196 transitions. [2024-06-21 16:16:09,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 116 transitions, 710 flow [2024-06-21 16:16:09,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 116 transitions, 698 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-21 16:16:09,937 INFO L231 Difference]: Finished difference. Result has 69 places, 70 transitions, 406 flow [2024-06-21 16:16:09,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=406, PETRI_PLACES=69, PETRI_TRANSITIONS=70} [2024-06-21 16:16:09,938 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 13 predicate places. [2024-06-21 16:16:09,938 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 70 transitions, 406 flow [2024-06-21 16:16:09,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:16:09,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:16:09,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:16:09,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 16:16:09,951 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:16:09,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:16:09,951 INFO L85 PathProgramCache]: Analyzing trace with hash 947875705, now seen corresponding path program 1 times [2024-06-21 16:16:09,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:16:09,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261904617] [2024-06-21 16:16:09,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:16:09,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:16:09,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:16:10,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:16:10,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:16:10,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261904617] [2024-06-21 16:16:10,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261904617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:16:10,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:16:10,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 16:16:10,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217360869] [2024-06-21 16:16:10,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:16:10,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 16:16:10,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:16:10,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 16:16:10,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-21 16:16:11,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-21 16:16:11,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 70 transitions, 406 flow. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:16:11,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:16:11,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-21 16:16:11,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:16:12,790 INFO L124 PetriNetUnfolderBase]: 11694/16481 cut-off events. [2024-06-21 16:16:12,791 INFO L125 PetriNetUnfolderBase]: For 31735/31739 co-relation queries the response was YES. [2024-06-21 16:16:12,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51797 conditions, 16481 events. 11694/16481 cut-off events. For 31735/31739 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 93839 event pairs, 5263 based on Foata normal form. 18/16348 useless extension candidates. Maximal degree in co-relation 51777. Up to 15590 conditions per place. [2024-06-21 16:16:12,873 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 89 selfloop transitions, 30 changer transitions 0/127 dead transitions. [2024-06-21 16:16:12,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 127 transitions, 854 flow [2024-06-21 16:16:12,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:16:12,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:16:12,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 222 transitions. [2024-06-21 16:16:12,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5983827493261455 [2024-06-21 16:16:12,875 INFO L175 Difference]: Start difference. First operand has 69 places, 70 transitions, 406 flow. Second operand 7 states and 222 transitions. [2024-06-21 16:16:12,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 127 transitions, 854 flow [2024-06-21 16:16:12,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 127 transitions, 788 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-21 16:16:12,882 INFO L231 Difference]: Finished difference. Result has 71 places, 73 transitions, 445 flow [2024-06-21 16:16:12,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=445, PETRI_PLACES=71, PETRI_TRANSITIONS=73} [2024-06-21 16:16:12,883 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 15 predicate places. [2024-06-21 16:16:12,883 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 73 transitions, 445 flow [2024-06-21 16:16:12,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:16:12,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:16:12,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:16:12,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 16:16:12,884 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)] === [2024-06-21 16:16:12,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:16:12,884 INFO L85 PathProgramCache]: Analyzing trace with hash -199938730, now seen corresponding path program 1 times [2024-06-21 16:16:12,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:16:12,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199453328] [2024-06-21 16:16:12,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:16:12,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:16:12,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:16:13,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:16:13,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:16:13,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199453328] [2024-06-21 16:16:13,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199453328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:16:13,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:16:13,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 16:16:13,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167150024] [2024-06-21 16:16:13,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:16:13,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 16:16:13,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:16:13,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 16:16:13,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-21 16:16:13,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-21 16:16:13,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 73 transitions, 445 flow. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:16:13,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:16:13,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-21 16:16:13,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:16:14,941 INFO L124 PetriNetUnfolderBase]: 11685/16446 cut-off events. [2024-06-21 16:16:14,941 INFO L125 PetriNetUnfolderBase]: For 44969/44969 co-relation queries the response was YES. [2024-06-21 16:16:14,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55570 conditions, 16446 events. 11685/16446 cut-off events. For 44969/44969 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 93551 event pairs, 6112 based on Foata normal form. 3/16297 useless extension candidates. Maximal degree in co-relation 55548. Up to 15805 conditions per place. [2024-06-21 16:16:15,053 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 73 selfloop transitions, 10 changer transitions 0/90 dead transitions. [2024-06-21 16:16:15,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 90 transitions, 655 flow [2024-06-21 16:16:15,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 16:16:15,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 16:16:15,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-06-21 16:16:15,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4830188679245283 [2024-06-21 16:16:15,055 INFO L175 Difference]: Start difference. First operand has 71 places, 73 transitions, 445 flow. Second operand 5 states and 128 transitions. [2024-06-21 16:16:15,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 90 transitions, 655 flow [2024-06-21 16:16:15,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 90 transitions, 568 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-21 16:16:15,070 INFO L231 Difference]: Finished difference. Result has 71 places, 73 transitions, 389 flow [2024-06-21 16:16:15,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=389, PETRI_PLACES=71, PETRI_TRANSITIONS=73} [2024-06-21 16:16:15,073 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 15 predicate places. [2024-06-21 16:16:15,073 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 73 transitions, 389 flow [2024-06-21 16:16:15,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:16:15,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:16:15,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:16:15,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 16:16:15,074 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)] === [2024-06-21 16:16:15,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:16:15,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1929914388, now seen corresponding path program 1 times [2024-06-21 16:16:15,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:16:15,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173274106] [2024-06-21 16:16:15,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:16:15,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:16:15,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:16:15,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:16:15,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:16:15,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173274106] [2024-06-21 16:16:15,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173274106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:16:15,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:16:15,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 16:16:15,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67883030] [2024-06-21 16:16:15,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:16:15,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 16:16:15,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:16:15,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 16:16:15,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-21 16:16:15,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 16:16:15,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 73 transitions, 389 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:16:15,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:16:15,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 16:16:15,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:16:17,657 INFO L124 PetriNetUnfolderBase]: 14145/19664 cut-off events. [2024-06-21 16:16:17,658 INFO L125 PetriNetUnfolderBase]: For 59139/59139 co-relation queries the response was YES. [2024-06-21 16:16:17,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66813 conditions, 19664 events. 14145/19664 cut-off events. For 59139/59139 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 109148 event pairs, 7102 based on Foata normal form. 10/19666 useless extension candidates. Maximal degree in co-relation 66789. Up to 18955 conditions per place. [2024-06-21 16:16:17,795 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 89 selfloop transitions, 22 changer transitions 0/117 dead transitions. [2024-06-21 16:16:17,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 117 transitions, 829 flow [2024-06-21 16:16:17,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:16:17,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:16:17,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2024-06-21 16:16:17,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4937106918238994 [2024-06-21 16:16:17,797 INFO L175 Difference]: Start difference. First operand has 71 places, 73 transitions, 389 flow. Second operand 6 states and 157 transitions. [2024-06-21 16:16:17,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 117 transitions, 829 flow [2024-06-21 16:16:17,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 117 transitions, 800 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-21 16:16:17,814 INFO L231 Difference]: Finished difference. Result has 75 places, 87 transitions, 546 flow [2024-06-21 16:16:17,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=546, PETRI_PLACES=75, PETRI_TRANSITIONS=87} [2024-06-21 16:16:17,815 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 19 predicate places. [2024-06-21 16:16:17,815 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 87 transitions, 546 flow [2024-06-21 16:16:17,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:16:17,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:16:17,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:16:17,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 16:16:17,816 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)] === [2024-06-21 16:16:17,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:16:17,817 INFO L85 PathProgramCache]: Analyzing trace with hash -6795997, now seen corresponding path program 1 times [2024-06-21 16:16:17,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:16:17,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903935244] [2024-06-21 16:16:17,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:16:17,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:16:17,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:16:18,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:16:18,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:16:18,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903935244] [2024-06-21 16:16:18,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903935244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:16:18,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:16:18,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 16:16:18,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027979603] [2024-06-21 16:16:18,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:16:18,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 16:16:18,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:16:18,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 16:16:18,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 16:16:18,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-21 16:16:18,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 87 transitions, 546 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 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) [2024-06-21 16:16:18,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:16:18,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-21 16:16:18,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:16:20,325 INFO L124 PetriNetUnfolderBase]: 13323/18838 cut-off events. [2024-06-21 16:16:20,326 INFO L125 PetriNetUnfolderBase]: For 82163/82181 co-relation queries the response was YES. [2024-06-21 16:16:20,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70759 conditions, 18838 events. 13323/18838 cut-off events. For 82163/82181 co-relation queries the response was YES. Maximal size of possible extension queue 665. Compared 108576 event pairs, 6620 based on Foata normal form. 14/18711 useless extension candidates. Maximal degree in co-relation 70733. Up to 17843 conditions per place. [2024-06-21 16:16:20,463 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 86 selfloop transitions, 25 changer transitions 0/121 dead transitions. [2024-06-21 16:16:20,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 121 transitions, 917 flow [2024-06-21 16:16:20,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:16:20,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:16:20,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 162 transitions. [2024-06-21 16:16:20,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5094339622641509 [2024-06-21 16:16:20,465 INFO L175 Difference]: Start difference. First operand has 75 places, 87 transitions, 546 flow. Second operand 6 states and 162 transitions. [2024-06-21 16:16:20,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 121 transitions, 917 flow [2024-06-21 16:16:20,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 121 transitions, 889 flow, removed 13 selfloop flow, removed 1 redundant places. [2024-06-21 16:16:20,501 INFO L231 Difference]: Finished difference. Result has 80 places, 91 transitions, 614 flow [2024-06-21 16:16:20,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=614, PETRI_PLACES=80, PETRI_TRANSITIONS=91} [2024-06-21 16:16:20,501 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 24 predicate places. [2024-06-21 16:16:20,502 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 91 transitions, 614 flow [2024-06-21 16:16:20,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 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) [2024-06-21 16:16:20,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:16:20,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:16:20,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 16:16:20,502 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)] === [2024-06-21 16:16:20,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:16:20,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1132465397, now seen corresponding path program 2 times [2024-06-21 16:16:20,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:16:20,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337094329] [2024-06-21 16:16:20,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:16:20,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:16:20,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:16:21,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:16:21,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:16:21,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337094329] [2024-06-21 16:16:21,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337094329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:16:21,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:16:21,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 16:16:21,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865270456] [2024-06-21 16:16:21,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:16:21,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 16:16:21,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:16:21,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 16:16:21,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-21 16:16:21,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-21 16:16:21,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 91 transitions, 614 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 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) [2024-06-21 16:16:21,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:16:21,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-21 16:16:21,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:16:23,017 INFO L124 PetriNetUnfolderBase]: 13293/18791 cut-off events. [2024-06-21 16:16:23,018 INFO L125 PetriNetUnfolderBase]: For 90275/90285 co-relation queries the response was YES. [2024-06-21 16:16:23,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71289 conditions, 18791 events. 13293/18791 cut-off events. For 90275/90285 co-relation queries the response was YES. Maximal size of possible extension queue 665. Compared 108317 event pairs, 6613 based on Foata normal form. 3/18653 useless extension candidates. Maximal degree in co-relation 71260. Up to 17899 conditions per place. [2024-06-21 16:16:23,163 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 91 selfloop transitions, 14 changer transitions 0/115 dead transitions. [2024-06-21 16:16:23,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 115 transitions, 886 flow [2024-06-21 16:16:23,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:16:23,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:16:23,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-21 16:16:23,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4779874213836478 [2024-06-21 16:16:23,165 INFO L175 Difference]: Start difference. First operand has 80 places, 91 transitions, 614 flow. Second operand 6 states and 152 transitions. [2024-06-21 16:16:23,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 115 transitions, 886 flow [2024-06-21 16:16:23,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 115 transitions, 843 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-21 16:16:23,203 INFO L231 Difference]: Finished difference. Result has 83 places, 91 transitions, 610 flow [2024-06-21 16:16:23,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=610, PETRI_PLACES=83, PETRI_TRANSITIONS=91} [2024-06-21 16:16:23,203 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 27 predicate places. [2024-06-21 16:16:23,203 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 91 transitions, 610 flow [2024-06-21 16:16:23,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 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) [2024-06-21 16:16:23,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:16:23,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:16:23,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 16:16:23,204 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)] === [2024-06-21 16:16:23,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:16:23,205 INFO L85 PathProgramCache]: Analyzing trace with hash -90907035, now seen corresponding path program 1 times [2024-06-21 16:16:23,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:16:23,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458409952] [2024-06-21 16:16:23,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:16:23,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:16:23,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:16:24,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:16:24,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:16:24,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458409952] [2024-06-21 16:16:24,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458409952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:16:24,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:16:24,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:16:24,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88075323] [2024-06-21 16:16:24,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:16:24,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:16:24,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:16:24,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:16:24,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:16:24,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 16:16:24,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 91 transitions, 610 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:16:24,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:16:24,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 16:16:24,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:16:26,048 INFO L124 PetriNetUnfolderBase]: 14546/20203 cut-off events. [2024-06-21 16:16:26,048 INFO L125 PetriNetUnfolderBase]: For 108691/108697 co-relation queries the response was YES. [2024-06-21 16:16:26,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78295 conditions, 20203 events. 14546/20203 cut-off events. For 108691/108697 co-relation queries the response was YES. Maximal size of possible extension queue 643. Compared 112159 event pairs, 6352 based on Foata normal form. 23/20224 useless extension candidates. Maximal degree in co-relation 78265. Up to 18881 conditions per place. [2024-06-21 16:16:26,194 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 114 selfloop transitions, 43 changer transitions 0/163 dead transitions. [2024-06-21 16:16:26,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 163 transitions, 1368 flow [2024-06-21 16:16:26,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:16:26,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:16:26,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 195 transitions. [2024-06-21 16:16:26,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5256064690026954 [2024-06-21 16:16:26,195 INFO L175 Difference]: Start difference. First operand has 83 places, 91 transitions, 610 flow. Second operand 7 states and 195 transitions. [2024-06-21 16:16:26,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 163 transitions, 1368 flow [2024-06-21 16:16:26,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 163 transitions, 1308 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-21 16:16:26,238 INFO L231 Difference]: Finished difference. Result has 87 places, 115 transitions, 904 flow [2024-06-21 16:16:26,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=904, PETRI_PLACES=87, PETRI_TRANSITIONS=115} [2024-06-21 16:16:26,239 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 31 predicate places. [2024-06-21 16:16:26,239 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 115 transitions, 904 flow [2024-06-21 16:16:26,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:16:26,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:16:26,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:16:26,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-21 16:16:26,240 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:16:26,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:16:26,240 INFO L85 PathProgramCache]: Analyzing trace with hash 624249419, now seen corresponding path program 2 times [2024-06-21 16:16:26,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:16:26,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941126367] [2024-06-21 16:16:26,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:16:26,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:16:26,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:16:26,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:16:26,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:16:26,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941126367] [2024-06-21 16:16:26,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941126367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:16:26,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:16:26,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:16:26,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491060576] [2024-06-21 16:16:26,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:16:26,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:16:26,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:16:26,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:16:26,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:16:27,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 16:16:27,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 115 transitions, 904 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:16:27,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:16:27,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 16:16:27,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:16:29,103 INFO L124 PetriNetUnfolderBase]: 14632/20328 cut-off events. [2024-06-21 16:16:29,103 INFO L125 PetriNetUnfolderBase]: For 147516/147518 co-relation queries the response was YES. [2024-06-21 16:16:29,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89289 conditions, 20328 events. 14632/20328 cut-off events. For 147516/147518 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 112794 event pairs, 6693 based on Foata normal form. 12/20338 useless extension candidates. Maximal degree in co-relation 89255. Up to 19592 conditions per place. [2024-06-21 16:16:29,263 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 125 selfloop transitions, 27 changer transitions 0/158 dead transitions. [2024-06-21 16:16:29,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 158 transitions, 1448 flow [2024-06-21 16:16:29,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:16:29,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:16:29,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-21 16:16:29,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48517520215633425 [2024-06-21 16:16:29,265 INFO L175 Difference]: Start difference. First operand has 87 places, 115 transitions, 904 flow. Second operand 7 states and 180 transitions. [2024-06-21 16:16:29,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 158 transitions, 1448 flow [2024-06-21 16:16:29,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 158 transitions, 1390 flow, removed 28 selfloop flow, removed 1 redundant places. [2024-06-21 16:16:29,354 INFO L231 Difference]: Finished difference. Result has 94 places, 122 transitions, 999 flow [2024-06-21 16:16:29,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=999, PETRI_PLACES=94, PETRI_TRANSITIONS=122} [2024-06-21 16:16:29,355 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 38 predicate places. [2024-06-21 16:16:29,355 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 122 transitions, 999 flow [2024-06-21 16:16:29,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:16:29,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:16:29,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:16:29,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-21 16:16:29,356 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)] === [2024-06-21 16:16:29,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:16:29,356 INFO L85 PathProgramCache]: Analyzing trace with hash 777964461, now seen corresponding path program 3 times [2024-06-21 16:16:29,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:16:29,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600493239] [2024-06-21 16:16:29,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:16:29,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:16:29,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:16:30,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:16:30,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:16:30,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600493239] [2024-06-21 16:16:30,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600493239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:16:30,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:16:30,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:16:30,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124220635] [2024-06-21 16:16:30,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:16:30,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:16:30,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:16:30,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:16:30,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:16:30,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 16:16:30,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 122 transitions, 999 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:16:30,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:16:30,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 16:16:30,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:16:32,250 INFO L124 PetriNetUnfolderBase]: 14656/20360 cut-off events. [2024-06-21 16:16:32,250 INFO L125 PetriNetUnfolderBase]: For 170841/170843 co-relation queries the response was YES. [2024-06-21 16:16:32,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92310 conditions, 20360 events. 14656/20360 cut-off events. For 170841/170843 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 112831 event pairs, 6686 based on Foata normal form. 12/20370 useless extension candidates. Maximal degree in co-relation 92272. Up to 19493 conditions per place. [2024-06-21 16:16:32,411 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 129 selfloop transitions, 36 changer transitions 0/171 dead transitions. [2024-06-21 16:16:32,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 171 transitions, 1677 flow [2024-06-21 16:16:32,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:16:32,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:16:32,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-21 16:16:32,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49595687331536387 [2024-06-21 16:16:32,437 INFO L175 Difference]: Start difference. First operand has 94 places, 122 transitions, 999 flow. Second operand 7 states and 184 transitions. [2024-06-21 16:16:32,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 171 transitions, 1677 flow [2024-06-21 16:16:32,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 171 transitions, 1599 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-21 16:16:32,547 INFO L231 Difference]: Finished difference. Result has 98 places, 132 transitions, 1150 flow [2024-06-21 16:16:32,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=921, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1150, PETRI_PLACES=98, PETRI_TRANSITIONS=132} [2024-06-21 16:16:32,547 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 42 predicate places. [2024-06-21 16:16:32,548 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 132 transitions, 1150 flow [2024-06-21 16:16:32,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:16:32,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:16:32,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:16:32,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-21 16:16:32,548 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)] === [2024-06-21 16:16:32,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:16:32,549 INFO L85 PathProgramCache]: Analyzing trace with hash 778210539, now seen corresponding path program 1 times [2024-06-21 16:16:32,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:16:32,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592544203] [2024-06-21 16:16:32,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:16:32,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:16:32,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:16:33,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:16:33,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:16:33,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592544203] [2024-06-21 16:16:33,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592544203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:16:33,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:16:33,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:16:33,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368096655] [2024-06-21 16:16:33,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:16:33,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:16:33,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:16:33,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:16:33,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:16:33,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 16:16:33,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 132 transitions, 1150 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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) [2024-06-21 16:16:33,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:16:33,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 16:16:33,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:16:35,997 INFO L124 PetriNetUnfolderBase]: 14676/20384 cut-off events. [2024-06-21 16:16:35,997 INFO L125 PetriNetUnfolderBase]: For 201497/201499 co-relation queries the response was YES. [2024-06-21 16:16:36,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96362 conditions, 20384 events. 14676/20384 cut-off events. For 201497/201499 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 113047 event pairs, 6519 based on Foata normal form. 12/20394 useless extension candidates. Maximal degree in co-relation 96323. Up to 19608 conditions per place. [2024-06-21 16:16:36,188 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 133 selfloop transitions, 33 changer transitions 0/172 dead transitions. [2024-06-21 16:16:36,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 172 transitions, 1716 flow [2024-06-21 16:16:36,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:16:36,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:16:36,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-21 16:16:36,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48787061994609165 [2024-06-21 16:16:36,190 INFO L175 Difference]: Start difference. First operand has 98 places, 132 transitions, 1150 flow. Second operand 7 states and 181 transitions. [2024-06-21 16:16:36,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 172 transitions, 1716 flow [2024-06-21 16:16:36,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 172 transitions, 1646 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-21 16:16:36,322 INFO L231 Difference]: Finished difference. Result has 102 places, 136 transitions, 1213 flow [2024-06-21 16:16:36,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1080, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1213, PETRI_PLACES=102, PETRI_TRANSITIONS=136} [2024-06-21 16:16:36,323 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 46 predicate places. [2024-06-21 16:16:36,323 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 136 transitions, 1213 flow [2024-06-21 16:16:36,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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) [2024-06-21 16:16:36,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:16:36,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:16:36,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-21 16:16:36,323 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:16:36,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:16:36,324 INFO L85 PathProgramCache]: Analyzing trace with hash -634654435, now seen corresponding path program 1 times [2024-06-21 16:16:36,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:16:36,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485182570] [2024-06-21 16:16:36,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:16:36,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:16:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:16:36,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:16:36,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:16:36,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485182570] [2024-06-21 16:16:36,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485182570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:16:36,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:16:36,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 16:16:36,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298628364] [2024-06-21 16:16:36,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:16:36,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 16:16:36,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:16:36,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 16:16:36,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-21 16:16:36,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 16:16:36,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 136 transitions, 1213 flow. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:16:36,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:16:36,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 16:16:36,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:16:38,968 INFO L124 PetriNetUnfolderBase]: 14669/20374 cut-off events. [2024-06-21 16:16:38,969 INFO L125 PetriNetUnfolderBase]: For 226083/226083 co-relation queries the response was YES. [2024-06-21 16:16:39,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100471 conditions, 20374 events. 14669/20374 cut-off events. For 226083/226083 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 112904 event pairs, 6679 based on Foata normal form. 2/20374 useless extension candidates. Maximal degree in co-relation 100430. Up to 19767 conditions per place. [2024-06-21 16:16:39,161 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 134 selfloop transitions, 10 changer transitions 0/150 dead transitions. [2024-06-21 16:16:39,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 150 transitions, 1537 flow [2024-06-21 16:16:39,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 16:16:39,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 16:16:39,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-06-21 16:16:39,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4528301886792453 [2024-06-21 16:16:39,163 INFO L175 Difference]: Start difference. First operand has 102 places, 136 transitions, 1213 flow. Second operand 5 states and 120 transitions. [2024-06-21 16:16:39,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 150 transitions, 1537 flow [2024-06-21 16:16:39,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 150 transitions, 1422 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-21 16:16:39,282 INFO L231 Difference]: Finished difference. Result has 102 places, 136 transitions, 1127 flow [2024-06-21 16:16:39,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1098, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1127, PETRI_PLACES=102, PETRI_TRANSITIONS=136} [2024-06-21 16:16:39,283 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 46 predicate places. [2024-06-21 16:16:39,283 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 136 transitions, 1127 flow [2024-06-21 16:16:39,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:16:39,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:16:39,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:16:39,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-21 16:16:39,284 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)] === [2024-06-21 16:16:39,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:16:39,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1442138802, now seen corresponding path program 1 times [2024-06-21 16:16:39,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:16:39,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573362656] [2024-06-21 16:16:39,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:16:39,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:16:39,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:16:40,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:16:40,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:16:40,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573362656] [2024-06-21 16:16:40,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573362656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:16:40,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:16:40,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:16:40,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209371321] [2024-06-21 16:16:40,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:16:40,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:16:40,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:16:40,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:16:40,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:16:40,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-21 16:16:40,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 136 transitions, 1127 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:16:40,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:16:40,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-21 16:16:40,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:16:42,516 INFO L124 PetriNetUnfolderBase]: 14088/19771 cut-off events. [2024-06-21 16:16:42,516 INFO L125 PetriNetUnfolderBase]: For 244877/245032 co-relation queries the response was YES. [2024-06-21 16:16:42,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98608 conditions, 19771 events. 14088/19771 cut-off events. For 244877/245032 co-relation queries the response was YES. Maximal size of possible extension queue 675. Compared 112347 event pairs, 6103 based on Foata normal form. 30/19652 useless extension candidates. Maximal degree in co-relation 98566. Up to 18537 conditions per place. [2024-06-21 16:16:42,702 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 130 selfloop transitions, 35 changer transitions 0/184 dead transitions. [2024-06-21 16:16:42,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 184 transitions, 1757 flow [2024-06-21 16:16:42,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:16:42,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:16:42,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 189 transitions. [2024-06-21 16:16:42,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5094339622641509 [2024-06-21 16:16:42,704 INFO L175 Difference]: Start difference. First operand has 102 places, 136 transitions, 1127 flow. Second operand 7 states and 189 transitions. [2024-06-21 16:16:42,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 184 transitions, 1757 flow [2024-06-21 16:16:42,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 184 transitions, 1724 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-21 16:16:42,822 INFO L231 Difference]: Finished difference. Result has 105 places, 144 transitions, 1299 flow [2024-06-21 16:16:42,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1094, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1299, PETRI_PLACES=105, PETRI_TRANSITIONS=144} [2024-06-21 16:16:42,823 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 49 predicate places. [2024-06-21 16:16:42,823 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 144 transitions, 1299 flow [2024-06-21 16:16:42,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:16:42,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:16:42,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:16:42,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-21 16:16:42,824 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)] === [2024-06-21 16:16:42,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:16:42,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1442229012, now seen corresponding path program 2 times [2024-06-21 16:16:42,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:16:42,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387407412] [2024-06-21 16:16:42,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:16:42,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:16:42,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:16:43,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:16:43,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:16:43,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387407412] [2024-06-21 16:16:43,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387407412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:16:43,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:16:43,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:16:43,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123581190] [2024-06-21 16:16:43,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:16:43,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:16:43,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:16:43,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:16:43,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:16:44,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-21 16:16:44,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 144 transitions, 1299 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:16:44,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:16:44,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-21 16:16:44,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:16:46,403 INFO L124 PetriNetUnfolderBase]: 14079/19759 cut-off events. [2024-06-21 16:16:46,403 INFO L125 PetriNetUnfolderBase]: For 281403/281558 co-relation queries the response was YES. [2024-06-21 16:16:46,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102993 conditions, 19759 events. 14079/19759 cut-off events. For 281403/281558 co-relation queries the response was YES. Maximal size of possible extension queue 675. Compared 112374 event pairs, 6103 based on Foata normal form. 30/19640 useless extension candidates. Maximal degree in co-relation 102951. Up to 18579 conditions per place. [2024-06-21 16:16:46,563 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 130 selfloop transitions, 29 changer transitions 0/178 dead transitions. [2024-06-21 16:16:46,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 178 transitions, 1705 flow [2024-06-21 16:16:46,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:16:46,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:16:46,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-21 16:16:46,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49326145552560646 [2024-06-21 16:16:46,573 INFO L175 Difference]: Start difference. First operand has 105 places, 144 transitions, 1299 flow. Second operand 7 states and 183 transitions. [2024-06-21 16:16:46,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 178 transitions, 1705 flow [2024-06-21 16:16:46,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 178 transitions, 1588 flow, removed 46 selfloop flow, removed 3 redundant places. [2024-06-21 16:16:46,753 INFO L231 Difference]: Finished difference. Result has 109 places, 144 transitions, 1251 flow [2024-06-21 16:16:46,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1182, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1251, PETRI_PLACES=109, PETRI_TRANSITIONS=144} [2024-06-21 16:16:46,754 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 53 predicate places. [2024-06-21 16:16:46,754 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 144 transitions, 1251 flow [2024-06-21 16:16:46,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:16:46,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:16:46,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:16:46,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-21 16:16:46,755 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)] === [2024-06-21 16:16:46,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:16:46,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1445948237, now seen corresponding path program 1 times [2024-06-21 16:16:46,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:16:46,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36020409] [2024-06-21 16:16:46,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:16:46,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:16:46,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:16:47,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:16:47,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:16:47,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36020409] [2024-06-21 16:16:47,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36020409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:16:47,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:16:47,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:16:47,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504450321] [2024-06-21 16:16:47,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:16:47,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:16:47,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:16:47,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:16:47,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:16:47,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 16:16:47,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 144 transitions, 1251 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:16:47,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:16:47,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 16:16:47,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:16:50,312 INFO L124 PetriNetUnfolderBase]: 14768/20481 cut-off events. [2024-06-21 16:16:50,313 INFO L125 PetriNetUnfolderBase]: For 306789/306799 co-relation queries the response was YES. [2024-06-21 16:16:50,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108252 conditions, 20481 events. 14768/20481 cut-off events. For 306789/306799 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 113260 event pairs, 6287 based on Foata normal form. 16/20495 useless extension candidates. Maximal degree in co-relation 108208. Up to 19054 conditions per place. [2024-06-21 16:16:50,474 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 132 selfloop transitions, 64 changer transitions 0/202 dead transitions. [2024-06-21 16:16:50,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 202 transitions, 2153 flow [2024-06-21 16:16:50,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:16:50,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:16:50,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 197 transitions. [2024-06-21 16:16:50,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5309973045822103 [2024-06-21 16:16:50,476 INFO L175 Difference]: Start difference. First operand has 109 places, 144 transitions, 1251 flow. Second operand 7 states and 197 transitions. [2024-06-21 16:16:50,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 202 transitions, 2153 flow [2024-06-21 16:16:50,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 202 transitions, 2081 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-21 16:16:50,612 INFO L231 Difference]: Finished difference. Result has 112 places, 154 transitions, 1529 flow [2024-06-21 16:16:50,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1179, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1529, PETRI_PLACES=112, PETRI_TRANSITIONS=154} [2024-06-21 16:16:50,613 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 56 predicate places. [2024-06-21 16:16:50,613 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 154 transitions, 1529 flow [2024-06-21 16:16:50,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:16:50,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:16:50,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:16:50,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-21 16:16:50,614 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)] === [2024-06-21 16:16:50,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:16:50,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1476851041, now seen corresponding path program 2 times [2024-06-21 16:16:50,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:16:50,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194148560] [2024-06-21 16:16:50,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:16:50,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:16:50,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:16:51,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:16:51,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:16:51,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194148560] [2024-06-21 16:16:51,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194148560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:16:51,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:16:51,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:16:51,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074930596] [2024-06-21 16:16:51,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:16:51,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:16:51,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:16:51,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:16:51,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:16:51,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 16:16:51,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 154 transitions, 1529 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:16:51,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:16:51,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 16:16:51,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:16:54,140 INFO L124 PetriNetUnfolderBase]: 14854/20597 cut-off events. [2024-06-21 16:16:54,141 INFO L125 PetriNetUnfolderBase]: For 351544/351554 co-relation queries the response was YES. [2024-06-21 16:16:54,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114201 conditions, 20597 events. 14854/20597 cut-off events. For 351544/351554 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 113854 event pairs, 6273 based on Foata normal form. 16/20611 useless extension candidates. Maximal degree in co-relation 114154. Up to 19123 conditions per place. [2024-06-21 16:16:54,317 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 130 selfloop transitions, 66 changer transitions 0/202 dead transitions. [2024-06-21 16:16:54,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 202 transitions, 2307 flow [2024-06-21 16:16:54,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:16:54,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:16:54,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 191 transitions. [2024-06-21 16:16:54,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148247978436657 [2024-06-21 16:16:54,319 INFO L175 Difference]: Start difference. First operand has 112 places, 154 transitions, 1529 flow. Second operand 7 states and 191 transitions. [2024-06-21 16:16:54,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 202 transitions, 2307 flow [2024-06-21 16:16:54,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 202 transitions, 2175 flow, removed 33 selfloop flow, removed 3 redundant places. [2024-06-21 16:16:54,639 INFO L231 Difference]: Finished difference. Result has 116 places, 159 transitions, 1626 flow [2024-06-21 16:16:54,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1407, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1626, PETRI_PLACES=116, PETRI_TRANSITIONS=159} [2024-06-21 16:16:54,639 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 60 predicate places. [2024-06-21 16:16:54,639 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 159 transitions, 1626 flow [2024-06-21 16:16:54,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:16:54,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:16:54,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:16:54,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-21 16:16:54,640 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)] === [2024-06-21 16:16:54,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:16:54,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1679936605, now seen corresponding path program 3 times [2024-06-21 16:16:54,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:16:54,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367288749] [2024-06-21 16:16:54,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:16:54,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:16:54,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:16:55,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:16:55,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:16:55,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367288749] [2024-06-21 16:16:55,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367288749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:16:55,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:16:55,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:16:55,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858465728] [2024-06-21 16:16:55,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:16:55,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:16:55,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:16:55,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:16:55,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:16:55,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 16:16:55,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 159 transitions, 1626 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:16:55,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:16:55,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 16:16:55,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:16:58,141 INFO L124 PetriNetUnfolderBase]: 14878/20656 cut-off events. [2024-06-21 16:16:58,141 INFO L125 PetriNetUnfolderBase]: For 380889/380901 co-relation queries the response was YES. [2024-06-21 16:16:58,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115675 conditions, 20656 events. 14878/20656 cut-off events. For 380889/380901 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 114426 event pairs, 6549 based on Foata normal form. 22/20676 useless extension candidates. Maximal degree in co-relation 115627. Up to 19862 conditions per place. [2024-06-21 16:16:58,487 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 163 selfloop transitions, 30 changer transitions 0/199 dead transitions. [2024-06-21 16:16:58,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 199 transitions, 2258 flow [2024-06-21 16:16:58,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:16:58,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:16:58,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-21 16:16:58,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48517520215633425 [2024-06-21 16:16:58,489 INFO L175 Difference]: Start difference. First operand has 116 places, 159 transitions, 1626 flow. Second operand 7 states and 180 transitions. [2024-06-21 16:16:58,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 199 transitions, 2258 flow [2024-06-21 16:16:58,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 199 transitions, 2124 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-21 16:16:58,738 INFO L231 Difference]: Finished difference. Result has 119 places, 164 transitions, 1656 flow [2024-06-21 16:16:58,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1496, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1656, PETRI_PLACES=119, PETRI_TRANSITIONS=164} [2024-06-21 16:16:58,738 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 63 predicate places. [2024-06-21 16:16:58,738 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 164 transitions, 1656 flow [2024-06-21 16:16:58,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:16:58,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:16:58,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:16:58,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-21 16:16:58,739 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)] === [2024-06-21 16:16:58,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:16:58,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1680203732, now seen corresponding path program 1 times [2024-06-21 16:16:58,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:16:58,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157748267] [2024-06-21 16:16:58,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:16:58,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:16:58,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:16:59,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:16:59,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:16:59,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157748267] [2024-06-21 16:16:59,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157748267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:16:59,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:16:59,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:16:59,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003378659] [2024-06-21 16:16:59,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:16:59,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:16:59,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:16:59,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:16:59,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:16:59,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 16:16:59,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 164 transitions, 1656 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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) [2024-06-21 16:16:59,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:16:59,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 16:16:59,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:17:02,631 INFO L124 PetriNetUnfolderBase]: 14890/20664 cut-off events. [2024-06-21 16:17:02,632 INFO L125 PetriNetUnfolderBase]: For 413579/413581 co-relation queries the response was YES. [2024-06-21 16:17:02,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117320 conditions, 20664 events. 14890/20664 cut-off events. For 413579/413581 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 114456 event pairs, 6524 based on Foata normal form. 7/20669 useless extension candidates. Maximal degree in co-relation 117271. Up to 19875 conditions per place. [2024-06-21 16:17:02,783 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 158 selfloop transitions, 39 changer transitions 0/203 dead transitions. [2024-06-21 16:17:02,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 203 transitions, 2292 flow [2024-06-21 16:17:02,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:17:02,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:17:02,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-21 16:17:02,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48517520215633425 [2024-06-21 16:17:02,784 INFO L175 Difference]: Start difference. First operand has 119 places, 164 transitions, 1656 flow. Second operand 7 states and 180 transitions. [2024-06-21 16:17:02,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 203 transitions, 2292 flow [2024-06-21 16:17:02,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 203 transitions, 2194 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-21 16:17:02,995 INFO L231 Difference]: Finished difference. Result has 121 places, 169 transitions, 1742 flow [2024-06-21 16:17:02,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1558, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1742, PETRI_PLACES=121, PETRI_TRANSITIONS=169} [2024-06-21 16:17:02,996 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 65 predicate places. [2024-06-21 16:17:02,996 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 169 transitions, 1742 flow [2024-06-21 16:17:02,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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) [2024-06-21 16:17:02,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:17:02,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:17:02,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-21 16:17:02,997 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:17:02,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:17:02,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1800550717, now seen corresponding path program 1 times [2024-06-21 16:17:02,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:17:02,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096303975] [2024-06-21 16:17:02,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:17:02,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:17:03,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:17:03,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:17:03,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:17:03,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096303975] [2024-06-21 16:17:03,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096303975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:17:03,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:17:03,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 16:17:03,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488176112] [2024-06-21 16:17:03,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:17:03,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 16:17:03,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:17:03,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 16:17:03,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-21 16:17:03,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 16:17:03,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 169 transitions, 1742 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:03,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:17:03,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 16:17:03,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:17:06,832 INFO L124 PetriNetUnfolderBase]: 14876/20857 cut-off events. [2024-06-21 16:17:06,833 INFO L125 PetriNetUnfolderBase]: For 458597/458597 co-relation queries the response was YES. [2024-06-21 16:17:06,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122304 conditions, 20857 events. 14876/20857 cut-off events. For 458597/458597 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 117386 event pairs, 6508 based on Foata normal form. 4/20859 useless extension candidates. Maximal degree in co-relation 122254. Up to 20029 conditions per place. [2024-06-21 16:17:06,994 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 172 selfloop transitions, 14 changer transitions 0/192 dead transitions. [2024-06-21 16:17:06,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 192 transitions, 2210 flow [2024-06-21 16:17:06,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:17:06,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:17:06,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-21 16:17:06,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44339622641509435 [2024-06-21 16:17:06,996 INFO L175 Difference]: Start difference. First operand has 121 places, 169 transitions, 1742 flow. Second operand 6 states and 141 transitions. [2024-06-21 16:17:06,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 192 transitions, 2210 flow [2024-06-21 16:17:07,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 192 transitions, 2090 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-21 16:17:07,259 INFO L231 Difference]: Finished difference. Result has 122 places, 173 transitions, 1715 flow [2024-06-21 16:17:07,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1622, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1715, PETRI_PLACES=122, PETRI_TRANSITIONS=173} [2024-06-21 16:17:07,260 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 66 predicate places. [2024-06-21 16:17:07,260 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 173 transitions, 1715 flow [2024-06-21 16:17:07,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:07,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:17:07,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:17:07,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-21 16:17:07,261 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:17:07,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:17:07,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1756629004, now seen corresponding path program 1 times [2024-06-21 16:17:07,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:17:07,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427550014] [2024-06-21 16:17:07,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:17:07,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:17:07,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:17:08,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:17:08,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:17:08,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427550014] [2024-06-21 16:17:08,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427550014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:17:08,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:17:08,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:17:08,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209355747] [2024-06-21 16:17:08,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:17:08,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:17:08,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:17:08,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:17:08,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:17:08,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-21 16:17:08,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 173 transitions, 1715 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:08,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:17:08,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-21 16:17:08,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:17:11,486 INFO L124 PetriNetUnfolderBase]: 14324/20269 cut-off events. [2024-06-21 16:17:11,486 INFO L125 PetriNetUnfolderBase]: For 497077/497395 co-relation queries the response was YES. [2024-06-21 16:17:11,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123441 conditions, 20269 events. 14324/20269 cut-off events. For 497077/497395 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 116844 event pairs, 5034 based on Foata normal form. 36/20110 useless extension candidates. Maximal degree in co-relation 123390. Up to 18680 conditions per place. [2024-06-21 16:17:11,641 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 160 selfloop transitions, 44 changer transitions 0/228 dead transitions. [2024-06-21 16:17:11,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 228 transitions, 2517 flow [2024-06-21 16:17:11,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:17:11,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:17:11,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 214 transitions. [2024-06-21 16:17:11,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5047169811320755 [2024-06-21 16:17:11,643 INFO L175 Difference]: Start difference. First operand has 122 places, 173 transitions, 1715 flow. Second operand 8 states and 214 transitions. [2024-06-21 16:17:11,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 228 transitions, 2517 flow [2024-06-21 16:17:11,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 228 transitions, 2454 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-21 16:17:11,854 INFO L231 Difference]: Finished difference. Result has 126 places, 179 transitions, 1904 flow [2024-06-21 16:17:11,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1652, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1904, PETRI_PLACES=126, PETRI_TRANSITIONS=179} [2024-06-21 16:17:11,854 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 70 predicate places. [2024-06-21 16:17:11,854 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 179 transitions, 1904 flow [2024-06-21 16:17:11,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:11,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:17:11,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:17:11,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-21 16:17:11,855 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:17:11,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:17:11,855 INFO L85 PathProgramCache]: Analyzing trace with hash -712353182, now seen corresponding path program 2 times [2024-06-21 16:17:11,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:17:11,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996381705] [2024-06-21 16:17:11,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:17:11,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:17:11,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:17:12,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:17:12,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:17:12,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996381705] [2024-06-21 16:17:12,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996381705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:17:12,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:17:12,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:17:12,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153558292] [2024-06-21 16:17:12,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:17:12,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:17:12,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:17:12,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:17:12,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:17:13,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-21 16:17:13,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 179 transitions, 1904 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:13,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:17:13,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-21 16:17:13,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand