./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.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/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i ./goblint.2024-06-19_11-23-25.files/protection/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-eb4cb34-m [2024-06-21 16:57:35,420 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 16:57:35,487 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 16:57:35,491 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 16:57:35,492 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 16:57:35,515 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 16:57:35,516 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 16:57:35,516 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 16:57:35,517 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 16:57:35,520 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 16:57:35,520 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 16:57:35,520 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 16:57:35,521 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 16:57:35,522 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 16:57:35,522 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 16:57:35,523 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 16:57:35,523 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 16:57:35,523 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 16:57:35,523 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 16:57:35,523 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 16:57:35,524 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 16:57:35,525 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 16:57:35,525 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 16:57:35,525 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 16:57:35,525 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 16:57:35,526 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 16:57:35,526 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 16:57:35,526 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 16:57:35,527 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 16:57:35,527 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 16:57:35,528 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 16:57:35,528 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 16:57:35,528 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 16:57:35,528 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 16:57:35,528 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 16:57:35,529 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 16:57:35,529 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 16:57:35,529 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 16:57:35,529 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 16:57:35,529 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 16:57:35,530 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 16:57:35,530 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 16:57:35,530 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 16:57:35,530 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 16:57:35,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 16:57:35,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 16:57:35,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 16:57:35,824 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 16:57:35,825 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 16:57:35,826 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml [2024-06-21 16:57:36,015 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 16:57:36,017 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 16:57:36,017 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-21 16:57:37,089 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 16:57:37,273 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 16:57:37,277 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-21 16:57:37,292 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d35ddbc4/39c24859e41e4e7aa0b5646044d62a1f/FLAG38525cc45 [2024-06-21 16:57:37,305 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d35ddbc4/39c24859e41e4e7aa0b5646044d62a1f [2024-06-21 16:57:37,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 16:57:37,307 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 16:57:37,309 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 16:57:37,309 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 16:57:37,313 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 16:57:37,313 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 04:57:36" (1/2) ... [2024-06-21 16:57:37,314 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e18aca8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:57:37, skipping insertion in model container [2024-06-21 16:57:37,314 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 04:57:36" (1/2) ... [2024-06-21 16:57:37,315 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@28a78493 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:57:37, skipping insertion in model container [2024-06-21 16:57:37,316 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 04:57:37" (2/2) ... [2024-06-21 16:57:37,316 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e18aca8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:57:37, skipping insertion in model container [2024-06-21 16:57:37,316 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 04:57:37" (2/2) ... [2024-06-21 16:57:37,317 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 16:57:37,407 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 16:57:37,407 INFO L97 edCorrectnessWitness]: Location invariant before [L852-L852] (((((((((((((((((((((! multithreaded || z$r_buff1_thd3 == (_Bool)0) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 2))) && (! multithreaded || ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 2))) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0) [2024-06-21 16:57:37,408 INFO L97 edCorrectnessWitness]: Location invariant before [L849-L849] (((((((((((((((((((((! multithreaded || z$r_buff1_thd3 == (_Bool)0) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 2))) && (! multithreaded || ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 2))) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0) [2024-06-21 16:57:37,408 INFO L97 edCorrectnessWitness]: Location invariant before [L851-L851] (((((((((((((((((((((! multithreaded || z$r_buff1_thd3 == (_Bool)0) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 2))) && (! multithreaded || ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 2))) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0) [2024-06-21 16:57:37,408 INFO L97 edCorrectnessWitness]: Location invariant before [L847-L847] (((((((((((((((((((((! multithreaded || z$r_buff1_thd3 == (_Bool)0) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 2))) && (! multithreaded || ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 2))) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0) [2024-06-21 16:57:37,408 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 16:57:37,408 INFO L106 edCorrectnessWitness]: ghost_update [L845-L845] multithreaded = 1; [2024-06-21 16:57:37,444 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 16:57:37,754 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 16:57:37,763 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 16:57:37,883 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 16:57:37,913 INFO L206 MainTranslator]: Completed translation [2024-06-21 16:57:37,914 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:57:37 WrapperNode [2024-06-21 16:57:37,914 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 16:57:37,915 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 16:57:37,915 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 16:57:37,915 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 16:57:37,920 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:57:37" (1/1) ... [2024-06-21 16:57:37,946 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:57:37" (1/1) ... [2024-06-21 16:57:37,978 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 163 [2024-06-21 16:57:37,979 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 16:57:37,979 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 16:57:37,979 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 16:57:37,980 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 16:57:37,988 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:57:37" (1/1) ... [2024-06-21 16:57:37,988 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:57:37" (1/1) ... [2024-06-21 16:57:38,007 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:57:37" (1/1) ... [2024-06-21 16:57:38,022 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 16:57:38,022 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:57:37" (1/1) ... [2024-06-21 16:57:38,022 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:57:37" (1/1) ... [2024-06-21 16:57:38,039 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:57:37" (1/1) ... [2024-06-21 16:57:38,044 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:57:37" (1/1) ... [2024-06-21 16:57:38,047 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:57:37" (1/1) ... [2024-06-21 16:57:38,050 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:57:37" (1/1) ... [2024-06-21 16:57:38,052 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 16:57:38,053 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 16:57:38,053 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 16:57:38,054 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 16:57:38,057 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:57:37" (1/1) ... [2024-06-21 16:57:38,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 16:57:38,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 16:57:38,141 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 16:57:38,161 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 16:57:38,182 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 16:57:38,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 16:57:38,183 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-21 16:57:38,183 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-21 16:57:38,183 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-21 16:57:38,183 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-21 16:57:38,183 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-21 16:57:38,183 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-21 16:57:38,184 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-21 16:57:38,184 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-21 16:57:38,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 16:57:38,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 16:57:38,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 16:57:38,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 16:57:38,186 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 16:57:38,329 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 16:57:38,331 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 16:57:38,625 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 16:57:38,625 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 16:57:38,789 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 16:57:38,789 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-21 16:57:38,789 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 04:57:38 BoogieIcfgContainer [2024-06-21 16:57:38,789 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 16:57:38,791 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 16:57:38,791 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 16:57:38,793 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 16:57:38,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 04:57:36" (1/4) ... [2024-06-21 16:57:38,794 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46c6cb6a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 04:57:38, skipping insertion in model container [2024-06-21 16:57:38,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 04:57:37" (2/4) ... [2024-06-21 16:57:38,794 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46c6cb6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 04:57:38, skipping insertion in model container [2024-06-21 16:57:38,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:57:37" (3/4) ... [2024-06-21 16:57:38,794 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46c6cb6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 04:57:38, skipping insertion in model container [2024-06-21 16:57:38,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 04:57:38" (4/4) ... [2024-06-21 16:57:38,795 INFO L112 eAbstractionObserver]: Analyzing ICFG mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-21 16:57:38,809 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 16:57:38,809 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-21 16:57:38,809 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 16:57:38,847 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-21 16:57:38,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 53 transitions, 122 flow [2024-06-21 16:57:38,889 INFO L124 PetriNetUnfolderBase]: 0/49 cut-off events. [2024-06-21 16:57:38,890 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 16:57:38,892 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 89 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 16:57:38,892 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 53 transitions, 122 flow [2024-06-21 16:57:38,894 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 43 transitions, 98 flow [2024-06-21 16:57:38,900 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 16:57:38,905 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;@51ed54fa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 16:57:38,905 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-21 16:57:38,907 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 16:57:38,907 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-21 16:57:38,908 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 16:57:38,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:57:38,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 16:57:38,909 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 16:57:38,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:57:38,912 INFO L85 PathProgramCache]: Analyzing trace with hash 385857690, now seen corresponding path program 1 times [2024-06-21 16:57:38,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:57:38,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716774390] [2024-06-21 16:57:38,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:57:38,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:57:39,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:57:39,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:57:39,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:57:39,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716774390] [2024-06-21 16:57:39,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716774390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:57:39,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:57:39,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 16:57:39,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276574605] [2024-06-21 16:57:39,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:57:39,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 16:57:39,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:57:39,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 16:57:39,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 16:57:39,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-21 16:57:39,718 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 16:57:39,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:57:39,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-21 16:57:39,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:57:41,017 INFO L124 PetriNetUnfolderBase]: 9547/13512 cut-off events. [2024-06-21 16:57:41,017 INFO L125 PetriNetUnfolderBase]: For 178/178 co-relation queries the response was YES. [2024-06-21 16:57:41,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26844 conditions, 13512 events. 9547/13512 cut-off events. For 178/178 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 76420 event pairs, 7308 based on Foata normal form. 1/13119 useless extension candidates. Maximal degree in co-relation 26831. Up to 12953 conditions per place. [2024-06-21 16:57:41,091 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 43 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-06-21 16:57:41,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 231 flow [2024-06-21 16:57:41,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 16:57:41,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 16:57:41,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2024-06-21 16:57:41,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.610062893081761 [2024-06-21 16:57:41,101 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 98 flow. Second operand 3 states and 97 transitions. [2024-06-21 16:57:41,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 231 flow [2024-06-21 16:57:41,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 57 transitions, 224 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-21 16:57:41,105 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 133 flow [2024-06-21 16:57:41,107 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 16:57:41,109 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2024-06-21 16:57:41,109 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 133 flow [2024-06-21 16:57:41,109 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 16:57:41,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:57:41,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:57:41,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 16:57:41,110 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 16:57:41,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:57:41,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1442084665, now seen corresponding path program 1 times [2024-06-21 16:57:41,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:57:41,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802183310] [2024-06-21 16:57:41,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:57:41,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:57:41,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:57:41,701 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 16:57:41,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:57:41,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802183310] [2024-06-21 16:57:41,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802183310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:57:41,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:57:41,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 16:57:41,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758403440] [2024-06-21 16:57:41,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:57:41,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 16:57:41,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:57:41,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 16:57:41,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-21 16:57:41,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-21 16:57:41,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:57:41,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:57:41,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-21 16:57:41,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:57:43,037 INFO L124 PetriNetUnfolderBase]: 10932/15101 cut-off events. [2024-06-21 16:57:43,038 INFO L125 PetriNetUnfolderBase]: For 2813/2813 co-relation queries the response was YES. [2024-06-21 16:57:43,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34114 conditions, 15101 events. 10932/15101 cut-off events. For 2813/2813 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 82759 event pairs, 7512 based on Foata normal form. 4/14921 useless extension candidates. Maximal degree in co-relation 34102. Up to 14763 conditions per place. [2024-06-21 16:57:43,122 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 54 selfloop transitions, 9 changer transitions 0/71 dead transitions. [2024-06-21 16:57:43,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 71 transitions, 325 flow [2024-06-21 16:57:43,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 16:57:43,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 16:57:43,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2024-06-21 16:57:43,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5801886792452831 [2024-06-21 16:57:43,126 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 133 flow. Second operand 4 states and 123 transitions. [2024-06-21 16:57:43,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 71 transitions, 325 flow [2024-06-21 16:57:43,129 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 16:57:43,131 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 181 flow [2024-06-21 16:57:43,131 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 16:57:43,132 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2024-06-21 16:57:43,132 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 181 flow [2024-06-21 16:57:43,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:57:43,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:57:43,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:57:43,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 16:57:43,135 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 16:57:43,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:57:43,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1754952717, now seen corresponding path program 1 times [2024-06-21 16:57:43,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:57:43,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905883425] [2024-06-21 16:57:43,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:57:43,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:57:43,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:57:43,795 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 16:57:43,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:57:43,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905883425] [2024-06-21 16:57:43,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905883425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:57:43,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:57:43,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 16:57:43,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449041090] [2024-06-21 16:57:43,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:57:43,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 16:57:43,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:57:43,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 16:57:43,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-21 16:57:43,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-21 16:57:43,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 181 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 16:57:43,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:57:43,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-21 16:57:43,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:57:45,094 INFO L124 PetriNetUnfolderBase]: 10950/15202 cut-off events. [2024-06-21 16:57:45,094 INFO L125 PetriNetUnfolderBase]: For 8188/8188 co-relation queries the response was YES. [2024-06-21 16:57:45,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38082 conditions, 15202 events. 10950/15202 cut-off events. For 8188/8188 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 84007 event pairs, 5910 based on Foata normal form. 7/15044 useless extension candidates. Maximal degree in co-relation 38068. Up to 14684 conditions per place. [2024-06-21 16:57:45,169 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 72 selfloop transitions, 21 changer transitions 0/101 dead transitions. [2024-06-21 16:57:45,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 101 transitions, 541 flow [2024-06-21 16:57:45,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 16:57:45,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 16:57:45,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2024-06-21 16:57:45,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6075471698113207 [2024-06-21 16:57:45,171 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 181 flow. Second operand 5 states and 161 transitions. [2024-06-21 16:57:45,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 101 transitions, 541 flow [2024-06-21 16:57:45,173 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 16:57:45,174 INFO L231 Difference]: Finished difference. Result has 63 places, 65 transitions, 312 flow [2024-06-21 16:57:45,175 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 16:57:45,175 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 7 predicate places. [2024-06-21 16:57:45,175 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 65 transitions, 312 flow [2024-06-21 16:57:45,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 16:57:45,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:57:45,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:57:45,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 16:57:45,176 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 16:57:45,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:57:45,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1417903098, now seen corresponding path program 1 times [2024-06-21 16:57:45,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:57:45,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576138784] [2024-06-21 16:57:45,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:57:45,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:57:45,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:57:45,832 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 16:57:45,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:57:45,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576138784] [2024-06-21 16:57:45,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576138784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:57:45,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:57:45,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 16:57:45,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535726230] [2024-06-21 16:57:45,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:57:45,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 16:57:45,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:57:45,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 16:57:45,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-21 16:57:45,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-21 16:57:45,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 65 transitions, 312 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 16:57:45,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:57:45,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-21 16:57:45,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:57:47,125 INFO L124 PetriNetUnfolderBase]: 10979/15245 cut-off events. [2024-06-21 16:57:47,126 INFO L125 PetriNetUnfolderBase]: For 19606/19612 co-relation queries the response was YES. [2024-06-21 16:57:47,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44476 conditions, 15245 events. 10979/15245 cut-off events. For 19606/19612 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 84387 event pairs, 4816 based on Foata normal form. 18/15098 useless extension candidates. Maximal degree in co-relation 44459. Up to 14649 conditions per place. [2024-06-21 16:57:47,412 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 79 selfloop transitions, 25 changer transitions 0/112 dead transitions. [2024-06-21 16:57:47,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 112 transitions, 686 flow [2024-06-21 16:57:47,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:57:47,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:57:47,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 186 transitions. [2024-06-21 16:57:47,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5849056603773585 [2024-06-21 16:57:47,414 INFO L175 Difference]: Start difference. First operand has 63 places, 65 transitions, 312 flow. Second operand 6 states and 186 transitions. [2024-06-21 16:57:47,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 112 transitions, 686 flow [2024-06-21 16:57:47,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 112 transitions, 674 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-21 16:57:47,420 INFO L231 Difference]: Finished difference. Result has 68 places, 68 transitions, 389 flow [2024-06-21 16:57:47,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=389, PETRI_PLACES=68, PETRI_TRANSITIONS=68} [2024-06-21 16:57:47,421 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 12 predicate places. [2024-06-21 16:57:47,421 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 68 transitions, 389 flow [2024-06-21 16:57:47,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 16:57:47,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:57:47,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:57:47,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 16:57:47,422 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:57:47,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:57:47,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1928676656, now seen corresponding path program 1 times [2024-06-21 16:57:47,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:57:47,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709805808] [2024-06-21 16:57:47,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:57:47,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:57:47,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:57:47,980 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 16:57:47,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:57:47,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709805808] [2024-06-21 16:57:47,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709805808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:57:47,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:57:47,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 16:57:47,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034926533] [2024-06-21 16:57:47,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:57:47,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 16:57:47,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:57:47,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 16:57:47,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-21 16:57:48,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-21 16:57:48,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 68 transitions, 389 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 16:57:48,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:57:48,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-21 16:57:48,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:57:49,162 INFO L124 PetriNetUnfolderBase]: 9575/13633 cut-off events. [2024-06-21 16:57:49,162 INFO L125 PetriNetUnfolderBase]: For 25662/25662 co-relation queries the response was YES. [2024-06-21 16:57:49,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43014 conditions, 13633 events. 9575/13633 cut-off events. For 25662/25662 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 77861 event pairs, 4948 based on Foata normal form. 3/13442 useless extension candidates. Maximal degree in co-relation 42993. Up to 12980 conditions per place. [2024-06-21 16:57:49,229 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 67 selfloop transitions, 10 changer transitions 0/85 dead transitions. [2024-06-21 16:57:49,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 85 transitions, 587 flow [2024-06-21 16:57:49,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 16:57:49,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 16:57:49,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-06-21 16:57:49,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47924528301886793 [2024-06-21 16:57:49,231 INFO L175 Difference]: Start difference. First operand has 68 places, 68 transitions, 389 flow. Second operand 5 states and 127 transitions. [2024-06-21 16:57:49,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 85 transitions, 587 flow [2024-06-21 16:57:49,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 85 transitions, 518 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-21 16:57:49,239 INFO L231 Difference]: Finished difference. Result has 69 places, 68 transitions, 351 flow [2024-06-21 16:57:49,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=351, PETRI_PLACES=69, PETRI_TRANSITIONS=68} [2024-06-21 16:57:49,239 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 13 predicate places. [2024-06-21 16:57:49,240 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 68 transitions, 351 flow [2024-06-21 16:57:49,240 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 16:57:49,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:57:49,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:57:49,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 16:57:49,240 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 16:57:49,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:57:49,241 INFO L85 PathProgramCache]: Analyzing trace with hash 334079886, now seen corresponding path program 1 times [2024-06-21 16:57:49,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:57:49,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475803908] [2024-06-21 16:57:49,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:57:49,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:57:49,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:57:49,945 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 16:57:49,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:57:49,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475803908] [2024-06-21 16:57:49,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475803908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:57:49,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:57:49,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 16:57:49,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688231954] [2024-06-21 16:57:49,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:57:49,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 16:57:49,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:57:49,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 16:57:49,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-21 16:57:50,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-21 16:57:50,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 68 transitions, 351 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 16:57:50,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:57:50,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-21 16:57:50,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:57:51,386 INFO L124 PetriNetUnfolderBase]: 9587/13705 cut-off events. [2024-06-21 16:57:51,387 INFO L125 PetriNetUnfolderBase]: For 29621/29621 co-relation queries the response was YES. [2024-06-21 16:57:51,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43818 conditions, 13705 events. 9587/13705 cut-off events. For 29621/29621 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 78408 event pairs, 4728 based on Foata normal form. 5/13558 useless extension candidates. Maximal degree in co-relation 43795. Up to 12930 conditions per place. [2024-06-21 16:57:51,481 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 80 selfloop transitions, 22 changer transitions 0/110 dead transitions. [2024-06-21 16:57:51,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 110 transitions, 749 flow [2024-06-21 16:57:51,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:57:51,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:57:51,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-06-21 16:57:51,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-21 16:57:51,483 INFO L175 Difference]: Start difference. First operand has 69 places, 68 transitions, 351 flow. Second operand 6 states and 159 transitions. [2024-06-21 16:57:51,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 110 transitions, 749 flow [2024-06-21 16:57:51,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 110 transitions, 720 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-21 16:57:51,493 INFO L231 Difference]: Finished difference. Result has 73 places, 82 transitions, 496 flow [2024-06-21 16:57:51,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=496, PETRI_PLACES=73, PETRI_TRANSITIONS=82} [2024-06-21 16:57:51,494 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 17 predicate places. [2024-06-21 16:57:51,494 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 82 transitions, 496 flow [2024-06-21 16:57:51,494 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 16:57:51,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:57:51,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:57:51,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 16:57:51,495 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 16:57:51,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:57:51,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1760820877, now seen corresponding path program 1 times [2024-06-21 16:57:51,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:57:51,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289798214] [2024-06-21 16:57:51,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:57:51,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:57:51,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:57:52,271 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 16:57:52,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:57:52,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289798214] [2024-06-21 16:57:52,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289798214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:57:52,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:57:52,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 16:57:52,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239993175] [2024-06-21 16:57:52,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:57:52,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 16:57:52,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:57:52,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 16:57:52,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-21 16:57:52,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 16:57:52,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 82 transitions, 496 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 16:57:52,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:57:52,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 16:57:52,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:57:54,006 INFO L124 PetriNetUnfolderBase]: 10995/15269 cut-off events. [2024-06-21 16:57:54,006 INFO L125 PetriNetUnfolderBase]: For 52058/52070 co-relation queries the response was YES. [2024-06-21 16:57:54,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55267 conditions, 15269 events. 10995/15269 cut-off events. For 52058/52070 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 84129 event pairs, 5541 based on Foata normal form. 14/15131 useless extension candidates. Maximal degree in co-relation 55242. Up to 14743 conditions per place. [2024-06-21 16:57:54,127 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 84 selfloop transitions, 25 changer transitions 0/116 dead transitions. [2024-06-21 16:57:54,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 116 transitions, 857 flow [2024-06-21 16:57:54,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:57:54,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:57:54,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2024-06-21 16:57:54,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49056603773584906 [2024-06-21 16:57:54,129 INFO L175 Difference]: Start difference. First operand has 73 places, 82 transitions, 496 flow. Second operand 6 states and 156 transitions. [2024-06-21 16:57:54,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 116 transitions, 857 flow [2024-06-21 16:57:54,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 116 transitions, 833 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-06-21 16:57:54,151 INFO L231 Difference]: Finished difference. Result has 78 places, 86 transitions, 568 flow [2024-06-21 16:57:54,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=568, PETRI_PLACES=78, PETRI_TRANSITIONS=86} [2024-06-21 16:57:54,152 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 22 predicate places. [2024-06-21 16:57:54,152 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 86 transitions, 568 flow [2024-06-21 16:57:54,152 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 16:57:54,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:57:54,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:57:54,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 16:57:54,153 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 16:57:54,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:57:54,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1967624047, now seen corresponding path program 2 times [2024-06-21 16:57:54,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:57:54,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690158930] [2024-06-21 16:57:54,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:57:54,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:57:54,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:57:54,779 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 16:57:54,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:57:54,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690158930] [2024-06-21 16:57:54,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690158930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:57:54,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:57:54,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 16:57:54,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746235225] [2024-06-21 16:57:54,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:57:54,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 16:57:54,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:57:54,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 16:57:54,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-21 16:57:54,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 16:57:54,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 86 transitions, 568 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 16:57:54,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:57:54,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 16:57:54,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:57:56,358 INFO L124 PetriNetUnfolderBase]: 10971/15221 cut-off events. [2024-06-21 16:57:56,359 INFO L125 PetriNetUnfolderBase]: For 58099/58105 co-relation queries the response was YES. [2024-06-21 16:57:56,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55740 conditions, 15221 events. 10971/15221 cut-off events. For 58099/58105 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 83768 event pairs, 5561 based on Foata normal form. 4/15066 useless extension candidates. Maximal degree in co-relation 55712. Up to 14713 conditions per place. [2024-06-21 16:57:56,472 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 77 selfloop transitions, 26 changer transitions 0/110 dead transitions. [2024-06-21 16:57:56,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 110 transitions, 836 flow [2024-06-21 16:57:56,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:57:56,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:57:56,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-06-21 16:57:56,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4748427672955975 [2024-06-21 16:57:56,473 INFO L175 Difference]: Start difference. First operand has 78 places, 86 transitions, 568 flow. Second operand 6 states and 151 transitions. [2024-06-21 16:57:56,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 110 transitions, 836 flow [2024-06-21 16:57:56,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 110 transitions, 793 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-21 16:57:56,503 INFO L231 Difference]: Finished difference. Result has 81 places, 86 transitions, 588 flow [2024-06-21 16:57:56,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=588, PETRI_PLACES=81, PETRI_TRANSITIONS=86} [2024-06-21 16:57:56,505 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 25 predicate places. [2024-06-21 16:57:56,506 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 86 transitions, 588 flow [2024-06-21 16:57:56,506 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 16:57:56,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:57:56,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:57:56,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 16:57:56,506 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 16:57:56,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:57:56,507 INFO L85 PathProgramCache]: Analyzing trace with hash -510790577, now seen corresponding path program 1 times [2024-06-21 16:57:56,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:57:56,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116535739] [2024-06-21 16:57:56,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:57:56,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:57:56,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:57:57,277 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 16:57:57,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:57:57,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116535739] [2024-06-21 16:57:57,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116535739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:57:57,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:57:57,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:57:57,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33988037] [2024-06-21 16:57:57,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:57:57,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:57:57,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:57:57,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:57:57,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:57:57,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 16:57:57,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 86 transitions, 588 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 16:57:57,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:57:57,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 16:57:57,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:57:59,057 INFO L124 PetriNetUnfolderBase]: 11509/15883 cut-off events. [2024-06-21 16:57:59,058 INFO L125 PetriNetUnfolderBase]: For 73846/73855 co-relation queries the response was YES. [2024-06-21 16:57:59,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60154 conditions, 15883 events. 11509/15883 cut-off events. For 73846/73855 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 87248 event pairs, 4900 based on Foata normal form. 13/15815 useless extension candidates. Maximal degree in co-relation 60125. Up to 14734 conditions per place. [2024-06-21 16:57:59,170 INFO L140 encePairwiseOnDemand]: 36/53 looper letters, 123 selfloop transitions, 59 changer transitions 0/189 dead transitions. [2024-06-21 16:57:59,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 189 transitions, 1666 flow [2024-06-21 16:57:59,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:57:59,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:57:59,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 222 transitions. [2024-06-21 16:57:59,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5235849056603774 [2024-06-21 16:57:59,201 INFO L175 Difference]: Start difference. First operand has 81 places, 86 transitions, 588 flow. Second operand 8 states and 222 transitions. [2024-06-21 16:57:59,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 189 transitions, 1666 flow [2024-06-21 16:57:59,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 189 transitions, 1503 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-21 16:57:59,247 INFO L231 Difference]: Finished difference. Result has 86 places, 122 transitions, 939 flow [2024-06-21 16:57:59,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=939, PETRI_PLACES=86, PETRI_TRANSITIONS=122} [2024-06-21 16:57:59,248 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 30 predicate places. [2024-06-21 16:57:59,248 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 122 transitions, 939 flow [2024-06-21 16:57:59,248 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 16:57:59,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:57:59,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:57:59,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 16:57:59,248 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 16:57:59,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:57:59,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1249126833, now seen corresponding path program 2 times [2024-06-21 16:57:59,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:57:59,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945914478] [2024-06-21 16:57:59,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:57:59,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:57:59,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:58:00,028 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 16:58:00,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:58:00,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945914478] [2024-06-21 16:58:00,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945914478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:58:00,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:58:00,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:58:00,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692676128] [2024-06-21 16:58:00,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:58:00,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:58:00,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:58:00,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:58:00,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:58:00,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 16:58:00,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 122 transitions, 939 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 16:58:00,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:58:00,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 16:58:00,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:58:01,762 INFO L124 PetriNetUnfolderBase]: 11857/16403 cut-off events. [2024-06-21 16:58:01,762 INFO L125 PetriNetUnfolderBase]: For 105911/105926 co-relation queries the response was YES. [2024-06-21 16:58:01,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71145 conditions, 16403 events. 11857/16403 cut-off events. For 105911/105926 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 90567 event pairs, 5049 based on Foata normal form. 25/16347 useless extension candidates. Maximal degree in co-relation 71112. Up to 15002 conditions per place. [2024-06-21 16:58:01,887 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 102 selfloop transitions, 81 changer transitions 0/190 dead transitions. [2024-06-21 16:58:01,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 190 transitions, 1809 flow [2024-06-21 16:58:01,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:58:01,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:58:01,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 191 transitions. [2024-06-21 16:58:01,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148247978436657 [2024-06-21 16:58:01,889 INFO L175 Difference]: Start difference. First operand has 86 places, 122 transitions, 939 flow. Second operand 7 states and 191 transitions. [2024-06-21 16:58:01,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 190 transitions, 1809 flow [2024-06-21 16:58:01,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 190 transitions, 1715 flow, removed 38 selfloop flow, removed 2 redundant places. [2024-06-21 16:58:01,986 INFO L231 Difference]: Finished difference. Result has 93 places, 143 transitions, 1312 flow [2024-06-21 16:58:01,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1312, PETRI_PLACES=93, PETRI_TRANSITIONS=143} [2024-06-21 16:58:01,987 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 37 predicate places. [2024-06-21 16:58:01,987 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 143 transitions, 1312 flow [2024-06-21 16:58:01,988 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 16:58:01,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:58:01,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:58:01,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-21 16:58:01,988 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 16:58:01,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:58:01,988 INFO L85 PathProgramCache]: Analyzing trace with hash -186879269, now seen corresponding path program 3 times [2024-06-21 16:58:01,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:58:01,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086441877] [2024-06-21 16:58:01,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:58:01,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:58:01,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:58:02,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:58:02,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:58:02,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086441877] [2024-06-21 16:58:02,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086441877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:58:02,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:58:02,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:58:02,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433218197] [2024-06-21 16:58:02,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:58:02,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:58:02,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:58:02,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:58:02,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:58:02,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 16:58:02,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 143 transitions, 1312 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 16:58:02,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:58:02,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 16:58:02,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:58:04,536 INFO L124 PetriNetUnfolderBase]: 11939/16515 cut-off events. [2024-06-21 16:58:04,537 INFO L125 PetriNetUnfolderBase]: For 139298/139311 co-relation queries the response was YES. [2024-06-21 16:58:04,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78201 conditions, 16515 events. 11939/16515 cut-off events. For 139298/139311 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 90987 event pairs, 5063 based on Foata normal form. 14/16429 useless extension candidates. Maximal degree in co-relation 78164. Up to 15054 conditions per place. [2024-06-21 16:58:04,666 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 106 selfloop transitions, 93 changer transitions 0/206 dead transitions. [2024-06-21 16:58:04,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 206 transitions, 2254 flow [2024-06-21 16:58:04,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:58:04,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:58:04,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 189 transitions. [2024-06-21 16:58:04,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5094339622641509 [2024-06-21 16:58:04,668 INFO L175 Difference]: Start difference. First operand has 93 places, 143 transitions, 1312 flow. Second operand 7 states and 189 transitions. [2024-06-21 16:58:04,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 206 transitions, 2254 flow [2024-06-21 16:58:04,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 206 transitions, 2127 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-21 16:58:04,798 INFO L231 Difference]: Finished difference. Result has 98 places, 159 transitions, 1595 flow [2024-06-21 16:58:04,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1197, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1595, PETRI_PLACES=98, PETRI_TRANSITIONS=159} [2024-06-21 16:58:04,799 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 42 predicate places. [2024-06-21 16:58:04,799 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 159 transitions, 1595 flow [2024-06-21 16:58:04,799 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 16:58:04,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:58:04,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:58:04,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-21 16:58:04,800 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 16:58:04,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:58:04,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1071758163, now seen corresponding path program 4 times [2024-06-21 16:58:04,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:58:04,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397073900] [2024-06-21 16:58:04,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:58:04,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:58:04,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:58:05,525 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 16:58:05,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:58:05,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397073900] [2024-06-21 16:58:05,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397073900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:58:05,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:58:05,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:58:05,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335734017] [2024-06-21 16:58:05,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:58:05,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:58:05,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:58:05,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:58:05,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:58:05,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 16:58:05,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 159 transitions, 1595 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 16:58:05,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:58:05,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 16:58:05,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:58:07,453 INFO L124 PetriNetUnfolderBase]: 11954/16547 cut-off events. [2024-06-21 16:58:07,453 INFO L125 PetriNetUnfolderBase]: For 172570/172593 co-relation queries the response was YES. [2024-06-21 16:58:07,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82595 conditions, 16547 events. 11954/16547 cut-off events. For 172570/172593 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 91309 event pairs, 5043 based on Foata normal form. 23/16471 useless extension candidates. Maximal degree in co-relation 82556. Up to 15072 conditions per place. [2024-06-21 16:58:07,621 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 96 selfloop transitions, 108 changer transitions 0/211 dead transitions. [2024-06-21 16:58:07,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 211 transitions, 2414 flow [2024-06-21 16:58:07,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:58:07,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:58:07,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 187 transitions. [2024-06-21 16:58:07,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5040431266846361 [2024-06-21 16:58:07,623 INFO L175 Difference]: Start difference. First operand has 98 places, 159 transitions, 1595 flow. Second operand 7 states and 187 transitions. [2024-06-21 16:58:07,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 211 transitions, 2414 flow [2024-06-21 16:58:07,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 211 transitions, 2219 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-06-21 16:58:07,765 INFO L231 Difference]: Finished difference. Result has 102 places, 167 transitions, 1748 flow [2024-06-21 16:58:07,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1414, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1748, PETRI_PLACES=102, PETRI_TRANSITIONS=167} [2024-06-21 16:58:07,766 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 46 predicate places. [2024-06-21 16:58:07,766 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 167 transitions, 1748 flow [2024-06-21 16:58:07,766 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 16:58:07,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:58:07,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:58:07,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-21 16:58:07,767 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 16:58:07,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:58:07,767 INFO L85 PathProgramCache]: Analyzing trace with hash 645405179, now seen corresponding path program 1 times [2024-06-21 16:58:07,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:58:07,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740124733] [2024-06-21 16:58:07,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:58:07,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:58:07,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:58:08,449 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 16:58:08,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:58:08,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740124733] [2024-06-21 16:58:08,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740124733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:58:08,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:58:08,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:58:08,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331497379] [2024-06-21 16:58:08,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:58:08,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:58:08,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:58:08,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:58:08,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:58:08,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-21 16:58:08,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 167 transitions, 1748 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states 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 16:58:08,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:58:08,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-21 16:58:08,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:58:10,153 INFO L124 PetriNetUnfolderBase]: 10579/14906 cut-off events. [2024-06-21 16:58:10,153 INFO L125 PetriNetUnfolderBase]: For 158169/158174 co-relation queries the response was YES. [2024-06-21 16:58:10,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74619 conditions, 14906 events. 10579/14906 cut-off events. For 158169/158174 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 84257 event pairs, 4299 based on Foata normal form. 12/14758 useless extension candidates. Maximal degree in co-relation 74578. Up to 14195 conditions per place. [2024-06-21 16:58:10,281 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 173 selfloop transitions, 26 changer transitions 0/207 dead transitions. [2024-06-21 16:58:10,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 207 transitions, 2396 flow [2024-06-21 16:58:10,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:58:10,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:58:10,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-21 16:58:10,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49595687331536387 [2024-06-21 16:58:10,283 INFO L175 Difference]: Start difference. First operand has 102 places, 167 transitions, 1748 flow. Second operand 7 states and 184 transitions. [2024-06-21 16:58:10,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 207 transitions, 2396 flow [2024-06-21 16:58:10,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 207 transitions, 2206 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-21 16:58:10,447 INFO L231 Difference]: Finished difference. Result has 105 places, 171 transitions, 1675 flow [2024-06-21 16:58:10,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1558, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1675, PETRI_PLACES=105, PETRI_TRANSITIONS=171} [2024-06-21 16:58:10,448 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 49 predicate places. [2024-06-21 16:58:10,448 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 171 transitions, 1675 flow [2024-06-21 16:58:10,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states 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 16:58:10,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:58:10,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:58:10,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-21 16:58:10,449 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 16:58:10,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:58:10,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1366230141, now seen corresponding path program 1 times [2024-06-21 16:58:10,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:58:10,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085671367] [2024-06-21 16:58:10,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:58:10,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:58:10,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:58:10,960 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 16:58:10,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:58:10,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085671367] [2024-06-21 16:58:10,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085671367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:58:10,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:58:10,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 16:58:10,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894956905] [2024-06-21 16:58:10,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:58:10,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 16:58:10,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:58:10,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 16:58:10,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-21 16:58:11,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-21 16:58:11,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 171 transitions, 1675 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 16:58:11,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:58:11,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-21 16:58:11,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:58:12,577 INFO L124 PetriNetUnfolderBase]: 10572/14890 cut-off events. [2024-06-21 16:58:12,577 INFO L125 PetriNetUnfolderBase]: For 173612/173614 co-relation queries the response was YES. [2024-06-21 16:58:12,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76399 conditions, 14890 events. 10572/14890 cut-off events. For 173612/173614 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 84123 event pairs, 4456 based on Foata normal form. 2/14730 useless extension candidates. Maximal degree in co-relation 76357. Up to 14310 conditions per place. [2024-06-21 16:58:12,726 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 167 selfloop transitions, 10 changer transitions 0/185 dead transitions. [2024-06-21 16:58:12,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 185 transitions, 2073 flow [2024-06-21 16:58:12,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 16:58:12,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 16:58:12,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-06-21 16:58:12,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4641509433962264 [2024-06-21 16:58:12,728 INFO L175 Difference]: Start difference. First operand has 105 places, 171 transitions, 1675 flow. Second operand 5 states and 123 transitions. [2024-06-21 16:58:12,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 185 transitions, 2073 flow [2024-06-21 16:58:12,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 185 transitions, 1978 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-21 16:58:12,897 INFO L231 Difference]: Finished difference. Result has 105 places, 171 transitions, 1609 flow [2024-06-21 16:58:12,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1580, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1609, PETRI_PLACES=105, PETRI_TRANSITIONS=171} [2024-06-21 16:58:12,898 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 49 predicate places. [2024-06-21 16:58:12,898 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 171 transitions, 1609 flow [2024-06-21 16:58:12,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 16:58:12,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:58:12,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:58:12,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-21 16:58:12,898 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 16:58:12,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:58:12,899 INFO L85 PathProgramCache]: Analyzing trace with hash 713987911, now seen corresponding path program 1 times [2024-06-21 16:58:12,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:58:12,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133062657] [2024-06-21 16:58:12,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:58:12,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:58:12,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:58:13,592 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 16:58:13,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:58:13,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133062657] [2024-06-21 16:58:13,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133062657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:58:13,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:58:13,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:58:13,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811597681] [2024-06-21 16:58:13,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:58:13,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:58:13,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:58:13,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:58:13,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:58:13,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 16:58:13,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 171 transitions, 1609 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 16:58:13,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:58:13,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 16:58:13,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:58:15,615 INFO L124 PetriNetUnfolderBase]: 12155/16876 cut-off events. [2024-06-21 16:58:15,615 INFO L125 PetriNetUnfolderBase]: For 219285/219318 co-relation queries the response was YES. [2024-06-21 16:58:15,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87647 conditions, 16876 events. 12155/16876 cut-off events. For 219285/219318 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 93686 event pairs, 5122 based on Foata normal form. 35/16815 useless extension candidates. Maximal degree in co-relation 87604. Up to 15273 conditions per place. [2024-06-21 16:58:15,750 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 117 selfloop transitions, 113 changer transitions 0/237 dead transitions. [2024-06-21 16:58:15,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 237 transitions, 2695 flow [2024-06-21 16:58:15,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:58:15,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:58:15,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2024-06-21 16:58:15,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5121293800539084 [2024-06-21 16:58:15,752 INFO L175 Difference]: Start difference. First operand has 105 places, 171 transitions, 1609 flow. Second operand 7 states and 190 transitions. [2024-06-21 16:58:15,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 237 transitions, 2695 flow [2024-06-21 16:58:15,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 237 transitions, 2662 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-21 16:58:15,910 INFO L231 Difference]: Finished difference. Result has 110 places, 190 transitions, 2155 flow [2024-06-21 16:58:15,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1576, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2155, PETRI_PLACES=110, PETRI_TRANSITIONS=190} [2024-06-21 16:58:15,912 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 54 predicate places. [2024-06-21 16:58:15,912 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 190 transitions, 2155 flow [2024-06-21 16:58:15,912 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 16:58:15,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:58:15,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:58:15,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-21 16:58:15,912 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 16:58:15,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:58:15,913 INFO L85 PathProgramCache]: Analyzing trace with hash -68231097, now seen corresponding path program 2 times [2024-06-21 16:58:15,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:58:15,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073762256] [2024-06-21 16:58:15,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:58:15,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:58:15,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:58:16,632 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 16:58:16,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:58:16,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073762256] [2024-06-21 16:58:16,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073762256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:58:16,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:58:16,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:58:16,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516980200] [2024-06-21 16:58:16,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:58:16,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:58:16,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:58:16,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:58:16,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:58:16,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 16:58:16,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 190 transitions, 2155 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 16:58:16,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:58:16,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 16:58:16,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:58:18,679 INFO L124 PetriNetUnfolderBase]: 12133/16839 cut-off events. [2024-06-21 16:58:18,680 INFO L125 PetriNetUnfolderBase]: For 253940/253965 co-relation queries the response was YES. [2024-06-21 16:58:18,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92974 conditions, 16839 events. 12133/16839 cut-off events. For 253940/253965 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 93294 event pairs, 5134 based on Foata normal form. 29/16772 useless extension candidates. Maximal degree in co-relation 92929. Up to 15259 conditions per place. [2024-06-21 16:58:18,828 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 118 selfloop transitions, 120 changer transitions 0/245 dead transitions. [2024-06-21 16:58:18,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 245 transitions, 3133 flow [2024-06-21 16:58:18,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:58:18,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:58:18,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 193 transitions. [2024-06-21 16:58:18,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5202156334231806 [2024-06-21 16:58:18,830 INFO L175 Difference]: Start difference. First operand has 110 places, 190 transitions, 2155 flow. Second operand 7 states and 193 transitions. [2024-06-21 16:58:18,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 245 transitions, 3133 flow [2024-06-21 16:58:19,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 245 transitions, 2944 flow, removed 38 selfloop flow, removed 3 redundant places. [2024-06-21 16:58:19,177 INFO L231 Difference]: Finished difference. Result has 116 places, 197 transitions, 2459 flow [2024-06-21 16:58:19,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1970, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2459, PETRI_PLACES=116, PETRI_TRANSITIONS=197} [2024-06-21 16:58:19,177 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 60 predicate places. [2024-06-21 16:58:19,177 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 197 transitions, 2459 flow [2024-06-21 16:58:19,178 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 16:58:19,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:58:19,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:58:19,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-21 16:58:19,178 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 16:58:19,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:58:19,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1108476887, now seen corresponding path program 3 times [2024-06-21 16:58:19,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:58:19,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686096458] [2024-06-21 16:58:19,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:58:19,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:58:19,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:58:19,897 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 16:58:19,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:58:19,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686096458] [2024-06-21 16:58:19,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686096458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:58:19,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:58:19,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:58:19,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071236732] [2024-06-21 16:58:19,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:58:19,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:58:19,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:58:19,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:58:19,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:58:19,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 16:58:19,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 197 transitions, 2459 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 16:58:19,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:58:19,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 16:58:19,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:58:21,892 INFO L124 PetriNetUnfolderBase]: 12148/16885 cut-off events. [2024-06-21 16:58:21,892 INFO L125 PetriNetUnfolderBase]: For 285425/285519 co-relation queries the response was YES. [2024-06-21 16:58:21,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96359 conditions, 16885 events. 12148/16885 cut-off events. For 285425/285519 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 93971 event pairs, 5169 based on Foata normal form. 68/16821 useless extension candidates. Maximal degree in co-relation 96311. Up to 15282 conditions per place. [2024-06-21 16:58:22,070 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 112 selfloop transitions, 124 changer transitions 0/243 dead transitions. [2024-06-21 16:58:22,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 243 transitions, 3275 flow [2024-06-21 16:58:22,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:58:22,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:58:22,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-21 16:58:22,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48787061994609165 [2024-06-21 16:58:22,072 INFO L175 Difference]: Start difference. First operand has 116 places, 197 transitions, 2459 flow. Second operand 7 states and 181 transitions. [2024-06-21 16:58:22,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 243 transitions, 3275 flow [2024-06-21 16:58:22,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 243 transitions, 3101 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-21 16:58:22,414 INFO L231 Difference]: Finished difference. Result has 119 places, 206 transitions, 2701 flow [2024-06-21 16:58:22,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2293, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2701, PETRI_PLACES=119, PETRI_TRANSITIONS=206} [2024-06-21 16:58:22,415 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 63 predicate places. [2024-06-21 16:58:22,415 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 206 transitions, 2701 flow [2024-06-21 16:58:22,415 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 16:58:22,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:58:22,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:58:22,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-21 16:58:22,416 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:58:22,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:58:22,416 INFO L85 PathProgramCache]: Analyzing trace with hash 596540593, now seen corresponding path program 1 times [2024-06-21 16:58:22,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:58:22,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309314911] [2024-06-21 16:58:22,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:58:22,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:58:22,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:58:23,016 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 16:58:23,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:58:23,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309314911] [2024-06-21 16:58:23,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309314911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:58:23,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:58:23,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 16:58:23,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728178592] [2024-06-21 16:58:23,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:58:23,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 16:58:23,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:58:23,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 16:58:23,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-21 16:58:23,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-21 16:58:23,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 206 transitions, 2701 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:58:23,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:58:23,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-21 16:58:23,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:58:24,894 INFO L124 PetriNetUnfolderBase]: 10739/15685 cut-off events. [2024-06-21 16:58:24,895 INFO L125 PetriNetUnfolderBase]: For 268107/268109 co-relation queries the response was YES. [2024-06-21 16:58:24,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88191 conditions, 15685 events. 10739/15685 cut-off events. For 268107/268109 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 93597 event pairs, 4440 based on Foata normal form. 4/15669 useless extension candidates. Maximal degree in co-relation 88142. Up to 14517 conditions per place. [2024-06-21 16:58:25,020 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 207 selfloop transitions, 14 changer transitions 0/229 dead transitions. [2024-06-21 16:58:25,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 229 transitions, 3243 flow [2024-06-21 16:58:25,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:58:25,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:58:25,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-21 16:58:25,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4559748427672956 [2024-06-21 16:58:25,023 INFO L175 Difference]: Start difference. First operand has 119 places, 206 transitions, 2701 flow. Second operand 6 states and 145 transitions. [2024-06-21 16:58:25,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 229 transitions, 3243 flow [2024-06-21 16:58:25,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 229 transitions, 3031 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-21 16:58:25,317 INFO L231 Difference]: Finished difference. Result has 121 places, 210 transitions, 2576 flow [2024-06-21 16:58:25,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2489, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2576, PETRI_PLACES=121, PETRI_TRANSITIONS=210} [2024-06-21 16:58:25,318 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 65 predicate places. [2024-06-21 16:58:25,318 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 210 transitions, 2576 flow [2024-06-21 16:58:25,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:58:25,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:58:25,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:58:25,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-21 16:58:25,319 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 16:58:25,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:58:25,319 INFO L85 PathProgramCache]: Analyzing trace with hash 2061651058, now seen corresponding path program 1 times [2024-06-21 16:58:25,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:58:25,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154195525] [2024-06-21 16:58:25,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:58:25,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:58:25,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:58:26,030 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 16:58:26,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:58:26,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154195525] [2024-06-21 16:58:26,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154195525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:58:26,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:58:26,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:58:26,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251532310] [2024-06-21 16:58:26,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:58:26,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:58:26,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:58:26,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:58:26,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:58:26,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 16:58:26,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 210 transitions, 2576 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 16:58:26,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:58:26,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 16:58:26,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:58:27,991 INFO L124 PetriNetUnfolderBase]: 12170/17126 cut-off events. [2024-06-21 16:58:27,991 INFO L125 PetriNetUnfolderBase]: For 330283/330321 co-relation queries the response was YES. [2024-06-21 16:58:28,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100212 conditions, 17126 events. 12170/17126 cut-off events. For 330283/330321 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 96782 event pairs, 3966 based on Foata normal form. 38/17140 useless extension candidates. Maximal degree in co-relation 100161. Up to 16039 conditions per place. [2024-06-21 16:58:28,159 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 208 selfloop transitions, 41 changer transitions 0/256 dead transitions. [2024-06-21 16:58:28,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 256 transitions, 3424 flow [2024-06-21 16:58:28,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:58:28,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:58:28,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-21 16:58:28,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48247978436657685 [2024-06-21 16:58:28,161 INFO L175 Difference]: Start difference. First operand has 121 places, 210 transitions, 2576 flow. Second operand 7 states and 179 transitions. [2024-06-21 16:58:28,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 256 transitions, 3424 flow [2024-06-21 16:58:28,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 256 transitions, 3367 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-21 16:58:28,614 INFO L231 Difference]: Finished difference. Result has 124 places, 216 transitions, 2737 flow [2024-06-21 16:58:28,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2519, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2737, PETRI_PLACES=124, PETRI_TRANSITIONS=216} [2024-06-21 16:58:28,615 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 68 predicate places. [2024-06-21 16:58:28,615 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 216 transitions, 2737 flow [2024-06-21 16:58:28,615 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 16:58:28,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:58:28,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:58:28,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-21 16:58:28,616 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 16:58:28,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:58:28,616 INFO L85 PathProgramCache]: Analyzing trace with hash 2064508018, now seen corresponding path program 2 times [2024-06-21 16:58:28,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:58:28,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079209618] [2024-06-21 16:58:28,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:58:28,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:58:28,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:58:29,608 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 16:58:29,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:58:29,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079209618] [2024-06-21 16:58:29,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079209618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:58:29,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:58:29,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:58:29,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737001873] [2024-06-21 16:58:29,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:58:29,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:58:29,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:58:29,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:58:29,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:58:29,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 16:58:29,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 216 transitions, 2737 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 16:58:29,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:58:29,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 16:58:29,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:58:31,706 INFO L124 PetriNetUnfolderBase]: 12155/17096 cut-off events. [2024-06-21 16:58:31,706 INFO L125 PetriNetUnfolderBase]: For 364578/364600 co-relation queries the response was YES. [2024-06-21 16:58:31,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102976 conditions, 17096 events. 12155/17096 cut-off events. For 364578/364600 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 96433 event pairs, 4722 based on Foata normal form. 22/17094 useless extension candidates. Maximal degree in co-relation 102924. Up to 16154 conditions per place. [2024-06-21 16:58:31,883 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 207 selfloop transitions, 40 changer transitions 0/254 dead transitions. [2024-06-21 16:58:31,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 254 transitions, 3361 flow [2024-06-21 16:58:31,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:58:31,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:58:31,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-21 16:58:31,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4743935309973046 [2024-06-21 16:58:31,886 INFO L175 Difference]: Start difference. First operand has 124 places, 216 transitions, 2737 flow. Second operand 7 states and 176 transitions. [2024-06-21 16:58:31,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 254 transitions, 3361 flow [2024-06-21 16:58:32,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 254 transitions, 3225 flow, removed 51 selfloop flow, removed 3 redundant places. [2024-06-21 16:58:32,442 INFO L231 Difference]: Finished difference. Result has 128 places, 216 transitions, 2693 flow [2024-06-21 16:58:32,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2601, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2693, PETRI_PLACES=128, PETRI_TRANSITIONS=216} [2024-06-21 16:58:32,443 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 72 predicate places. [2024-06-21 16:58:32,443 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 216 transitions, 2693 flow [2024-06-21 16:58:32,444 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 16:58:32,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:58:32,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:58:32,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-21 16:58:32,444 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:58:32,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:58:32,446 INFO L85 PathProgramCache]: Analyzing trace with hash 658796378, now seen corresponding path program 1 times [2024-06-21 16:58:32,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:58:32,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673076470] [2024-06-21 16:58:32,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:58:32,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:58:32,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:58:33,400 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 16:58:33,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:58:33,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673076470] [2024-06-21 16:58:33,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673076470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:58:33,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:58:33,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:58:33,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316701630] [2024-06-21 16:58:33,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:58:33,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:58:33,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:58:33,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:58:33,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:58:33,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 16:58:33,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 216 transitions, 2693 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 16:58:33,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:58:33,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 16:58:33,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:58:35,950 INFO L124 PetriNetUnfolderBase]: 12480/17498 cut-off events. [2024-06-21 16:58:35,950 INFO L125 PetriNetUnfolderBase]: For 404623/404645 co-relation queries the response was YES. [2024-06-21 16:58:36,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106725 conditions, 17498 events. 12480/17498 cut-off events. For 404623/404645 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 98832 event pairs, 4696 based on Foata normal form. 63/17521 useless extension candidates. Maximal degree in co-relation 106671. Up to 15366 conditions per place. [2024-06-21 16:58:36,685 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 134 selfloop transitions, 133 changer transitions 0/274 dead transitions. [2024-06-21 16:58:36,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 274 transitions, 3719 flow [2024-06-21 16:58:36,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:58:36,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:58:36,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 217 transitions. [2024-06-21 16:58:36,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5117924528301887 [2024-06-21 16:58:36,688 INFO L175 Difference]: Start difference. First operand has 128 places, 216 transitions, 2693 flow. Second operand 8 states and 217 transitions. [2024-06-21 16:58:36,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 274 transitions, 3719 flow [2024-06-21 16:58:37,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 274 transitions, 3627 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-21 16:58:37,048 INFO L231 Difference]: Finished difference. Result has 130 places, 220 transitions, 2965 flow [2024-06-21 16:58:37,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2601, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2965, PETRI_PLACES=130, PETRI_TRANSITIONS=220} [2024-06-21 16:58:37,049 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 74 predicate places. [2024-06-21 16:58:37,049 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 220 transitions, 2965 flow [2024-06-21 16:58:37,049 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 16:58:37,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:58:37,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:58:37,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-21 16:58:37,050 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:58:37,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:58:37,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1809081102, now seen corresponding path program 1 times [2024-06-21 16:58:37,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:58:37,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121906521] [2024-06-21 16:58:37,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:58:37,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:58:37,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:58:37,828 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 16:58:37,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:58:37,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121906521] [2024-06-21 16:58:37,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121906521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:58:37,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:58:37,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 16:58:37,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045984508] [2024-06-21 16:58:37,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:58:37,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 16:58:37,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:58:37,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 16:58:37,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-21 16:58:37,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 16:58:37,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 220 transitions, 2965 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 16:58:37,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:58:37,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 16:58:37,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:58:40,057 INFO L124 PetriNetUnfolderBase]: 12503/17550 cut-off events. [2024-06-21 16:58:40,058 INFO L125 PetriNetUnfolderBase]: For 438880/438896 co-relation queries the response was YES. [2024-06-21 16:58:40,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111781 conditions, 17550 events. 12503/17550 cut-off events. For 438880/438896 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 99092 event pairs, 4733 based on Foata normal form. 18/17534 useless extension candidates. Maximal degree in co-relation 111726. Up to 16855 conditions per place. [2024-06-21 16:58:40,206 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 220 selfloop transitions, 29 changer transitions 0/256 dead transitions. [2024-06-21 16:58:40,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 256 transitions, 3789 flow [2024-06-21 16:58:40,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:58:40,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:58:40,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-21 16:58:40,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46855345911949686 [2024-06-21 16:58:40,208 INFO L175 Difference]: Start difference. First operand has 130 places, 220 transitions, 2965 flow. Second operand 6 states and 149 transitions. [2024-06-21 16:58:40,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 256 transitions, 3789 flow [2024-06-21 16:58:40,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 256 transitions, 3467 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-21 16:58:40,901 INFO L231 Difference]: Finished difference. Result has 130 places, 227 transitions, 2855 flow [2024-06-21 16:58:40,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2655, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2855, PETRI_PLACES=130, PETRI_TRANSITIONS=227} [2024-06-21 16:58:40,902 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 74 predicate places. [2024-06-21 16:58:40,902 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 227 transitions, 2855 flow [2024-06-21 16:58:40,902 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 16:58:40,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:58:40,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:58:40,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-21 16:58:40,903 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 16:58:40,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:58:40,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1522632956, now seen corresponding path program 2 times [2024-06-21 16:58:40,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:58:40,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908556014] [2024-06-21 16:58:40,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:58:40,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:58:40,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:58:41,752 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 16:58:41,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:58:41,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908556014] [2024-06-21 16:58:41,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908556014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:58:41,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:58:41,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:58:41,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871679669] [2024-06-21 16:58:41,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:58:41,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:58:41,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:58:41,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:58:41,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:58:41,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 16:58:41,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 227 transitions, 2855 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 16:58:41,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:58:41,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 16:58:41,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:58:44,550 INFO L124 PetriNetUnfolderBase]: 12574/17620 cut-off events. [2024-06-21 16:58:44,551 INFO L125 PetriNetUnfolderBase]: For 458544/458565 co-relation queries the response was YES. [2024-06-21 16:58:44,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111180 conditions, 17620 events. 12574/17620 cut-off events. For 458544/458565 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 99272 event pairs, 4735 based on Foata normal form. 20/17563 useless extension candidates. Maximal degree in co-relation 111124. Up to 15817 conditions per place. [2024-06-21 16:58:44,702 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 133 selfloop transitions, 140 changer transitions 0/280 dead transitions. [2024-06-21 16:58:44,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 280 transitions, 3909 flow [2024-06-21 16:58:44,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:58:44,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:58:44,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-06-21 16:58:44,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49764150943396224 [2024-06-21 16:58:44,789 INFO L175 Difference]: Start difference. First operand has 130 places, 227 transitions, 2855 flow. Second operand 8 states and 211 transitions. [2024-06-21 16:58:44,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 280 transitions, 3909 flow [2024-06-21 16:58:45,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 280 transitions, 3527 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-21 16:58:45,260 INFO L231 Difference]: Finished difference. Result has 131 places, 231 transitions, 2855 flow [2024-06-21 16:58:45,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2473, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2855, PETRI_PLACES=131, PETRI_TRANSITIONS=231} [2024-06-21 16:58:45,261 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 75 predicate places. [2024-06-21 16:58:45,261 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 231 transitions, 2855 flow [2024-06-21 16:58:45,261 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 16:58:45,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:58:45,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:58:45,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-21 16:58:45,262 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:58:45,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:58:45,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1758808316, now seen corresponding path program 3 times [2024-06-21 16:58:45,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:58:45,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971471453] [2024-06-21 16:58:45,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:58:45,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:58:45,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:58:46,169 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 16:58:46,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:58:46,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971471453] [2024-06-21 16:58:46,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971471453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:58:46,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:58:46,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:58:46,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452026650] [2024-06-21 16:58:46,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:58:46,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:58:46,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:58:46,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:58:46,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:58:46,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 16:58:46,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 231 transitions, 2855 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 16:58:46,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:58:46,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 16:58:46,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:58:48,791 INFO L124 PetriNetUnfolderBase]: 12645/17719 cut-off events. [2024-06-21 16:58:48,792 INFO L125 PetriNetUnfolderBase]: For 493641/493670 co-relation queries the response was YES. [2024-06-21 16:58:48,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115838 conditions, 17719 events. 12645/17719 cut-off events. For 493641/493670 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 99822 event pairs, 4723 based on Foata normal form. 28/17676 useless extension candidates. Maximal degree in co-relation 115783. Up to 15922 conditions per place. [2024-06-21 16:58:48,961 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 128 selfloop transitions, 148 changer transitions 0/283 dead transitions. [2024-06-21 16:58:48,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 283 transitions, 3843 flow [2024-06-21 16:58:48,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:58:48,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:58:48,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-21 16:58:48,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49528301886792453 [2024-06-21 16:58:48,963 INFO L175 Difference]: Start difference. First operand has 131 places, 231 transitions, 2855 flow. Second operand 8 states and 210 transitions. [2024-06-21 16:58:48,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 283 transitions, 3843 flow [2024-06-21 16:58:49,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 283 transitions, 3495 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-21 16:58:49,439 INFO L231 Difference]: Finished difference. Result has 133 places, 235 transitions, 2913 flow [2024-06-21 16:58:49,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2507, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2913, PETRI_PLACES=133, PETRI_TRANSITIONS=235} [2024-06-21 16:58:49,439 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 77 predicate places. [2024-06-21 16:58:49,439 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 235 transitions, 2913 flow [2024-06-21 16:58:49,440 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 16:58:49,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:58:49,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:58:49,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-21 16:58:49,440 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:58:49,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:58:49,441 INFO L85 PathProgramCache]: Analyzing trace with hash 841154796, now seen corresponding path program 4 times [2024-06-21 16:58:49,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:58:49,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392676522] [2024-06-21 16:58:49,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:58:49,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:58:49,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:58:50,423 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 16:58:50,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:58:50,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392676522] [2024-06-21 16:58:50,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392676522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:58:50,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:58:50,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:58:50,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36714868] [2024-06-21 16:58:50,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:58:50,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:58:50,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:58:50,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:58:50,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:58:50,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 16:58:50,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 235 transitions, 2913 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 16:58:50,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:58:50,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 16:58:50,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:58:53,196 INFO L124 PetriNetUnfolderBase]: 12665/17747 cut-off events. [2024-06-21 16:58:53,196 INFO L125 PetriNetUnfolderBase]: For 533696/533725 co-relation queries the response was YES. [2024-06-21 16:58:53,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118956 conditions, 17747 events. 12665/17747 cut-off events. For 533696/533725 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 99981 event pairs, 4283 based on Foata normal form. 28/17704 useless extension candidates. Maximal degree in co-relation 118900. Up to 15362 conditions per place. [2024-06-21 16:58:53,343 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 120 selfloop transitions, 163 changer transitions 0/290 dead transitions. [2024-06-21 16:58:53,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 290 transitions, 3939 flow [2024-06-21 16:58:53,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:58:53,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:58:53,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 214 transitions. [2024-06-21 16:58:53,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5047169811320755 [2024-06-21 16:58:53,344 INFO L175 Difference]: Start difference. First operand has 133 places, 235 transitions, 2913 flow. Second operand 8 states and 214 transitions. [2024-06-21 16:58:53,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 290 transitions, 3939 flow [2024-06-21 16:58:53,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 290 transitions, 3567 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-21 16:58:53,859 INFO L231 Difference]: Finished difference. Result has 135 places, 239 transitions, 2984 flow [2024-06-21 16:58:53,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2541, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2984, PETRI_PLACES=135, PETRI_TRANSITIONS=239} [2024-06-21 16:58:53,859 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 79 predicate places. [2024-06-21 16:58:53,859 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 239 transitions, 2984 flow [2024-06-21 16:58:53,860 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 16:58:53,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:58:53,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:58:53,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-21 16:58:53,860 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:58:53,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:58:53,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1312877346, now seen corresponding path program 2 times [2024-06-21 16:58:53,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:58:53,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313070987] [2024-06-21 16:58:53,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:58:53,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:58:53,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:58:54,503 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 16:58:54,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:58:54,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313070987] [2024-06-21 16:58:54,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313070987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:58:54,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:58:54,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 16:58:54,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792147755] [2024-06-21 16:58:54,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:58:54,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 16:58:54,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:58:54,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 16:58:54,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-21 16:58:54,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 16:58:54,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 239 transitions, 2984 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 16:58:54,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:58:54,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 16:58:54,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:58:57,101 INFO L124 PetriNetUnfolderBase]: 12654/17771 cut-off events. [2024-06-21 16:58:57,101 INFO L125 PetriNetUnfolderBase]: For 576989/577019 co-relation queries the response was YES. [2024-06-21 16:58:57,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121991 conditions, 17771 events. 12654/17771 cut-off events. For 576989/577019 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 100397 event pairs, 4735 based on Foata normal form. 23/17755 useless extension candidates. Maximal degree in co-relation 121934. Up to 17074 conditions per place. [2024-06-21 16:58:57,248 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 225 selfloop transitions, 29 changer transitions 0/261 dead transitions. [2024-06-21 16:58:57,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 261 transitions, 3574 flow [2024-06-21 16:58:57,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:58:57,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:58:57,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-21 16:58:57,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44339622641509435 [2024-06-21 16:58:57,250 INFO L175 Difference]: Start difference. First operand has 135 places, 239 transitions, 2984 flow. Second operand 6 states and 141 transitions. [2024-06-21 16:58:57,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 261 transitions, 3574 flow [2024-06-21 16:58:57,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 261 transitions, 3137 flow, removed 58 selfloop flow, removed 6 redundant places. [2024-06-21 16:58:57,891 INFO L231 Difference]: Finished difference. Result has 135 places, 239 transitions, 2617 flow [2024-06-21 16:58:57,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2547, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2617, PETRI_PLACES=135, PETRI_TRANSITIONS=239} [2024-06-21 16:58:57,892 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 79 predicate places. [2024-06-21 16:58:57,892 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 239 transitions, 2617 flow [2024-06-21 16:58:57,892 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 16:58:57,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:58:57,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:58:57,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-21 16:58:57,893 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:58:57,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:58:57,893 INFO L85 PathProgramCache]: Analyzing trace with hash 280736134, now seen corresponding path program 1 times [2024-06-21 16:58:57,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:58:57,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277074738] [2024-06-21 16:58:57,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:58:57,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:58:57,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:58:58,615 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 16:58:58,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:58:58,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277074738] [2024-06-21 16:58:58,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277074738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:58:58,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:58:58,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 16:58:58,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053712922] [2024-06-21 16:58:58,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:58:58,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 16:58:58,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:58:58,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 16:58:58,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-21 16:58:58,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-21 16:58:58,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 239 transitions, 2617 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:58:58,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:58:58,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-21 16:58:58,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:59:01,022 INFO L124 PetriNetUnfolderBase]: 11268/16277 cut-off events. [2024-06-21 16:59:01,023 INFO L125 PetriNetUnfolderBase]: For 516999/517007 co-relation queries the response was YES. [2024-06-21 16:59:01,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108421 conditions, 16277 events. 11268/16277 cut-off events. For 516999/517007 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 95928 event pairs, 4125 based on Foata normal form. 8/16219 useless extension candidates. Maximal degree in co-relation 108363. Up to 15224 conditions per place. [2024-06-21 16:59:01,172 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 233 selfloop transitions, 25 changer transitions 0/266 dead transitions. [2024-06-21 16:59:01,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 266 transitions, 3360 flow [2024-06-21 16:59:01,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:59:01,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:59:01,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-06-21 16:59:01,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4811320754716981 [2024-06-21 16:59:01,173 INFO L175 Difference]: Start difference. First operand has 135 places, 239 transitions, 2617 flow. Second operand 6 states and 153 transitions. [2024-06-21 16:59:01,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 266 transitions, 3360 flow [2024-06-21 16:59:01,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 266 transitions, 3279 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-21 16:59:01,782 INFO L231 Difference]: Finished difference. Result has 136 places, 243 transitions, 2652 flow [2024-06-21 16:59:01,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2536, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2652, PETRI_PLACES=136, PETRI_TRANSITIONS=243} [2024-06-21 16:59:01,783 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 80 predicate places. [2024-06-21 16:59:01,783 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 243 transitions, 2652 flow [2024-06-21 16:59:01,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:59:01,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:59:01,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:59:01,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-21 16:59:01,784 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:59:01,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:59:01,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1312883298, now seen corresponding path program 2 times [2024-06-21 16:59:01,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:59:01,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164506099] [2024-06-21 16:59:01,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:59:01,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:59:01,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:59:02,378 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 16:59:02,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:59:02,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164506099] [2024-06-21 16:59:02,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164506099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:59:02,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:59:02,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 16:59:02,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011313818] [2024-06-21 16:59:02,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:59:02,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 16:59:02,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:59:02,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 16:59:02,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-21 16:59:02,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-21 16:59:02,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 243 transitions, 2652 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:59:02,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:59:02,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-21 16:59:02,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand