./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix005_tso.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix005_tso.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de 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/mix005_tso.oepc.i ./goblint.2024-06-19_11-23-25.files/protection/mix005_tso.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 19:48:38,156 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 19:48:38,219 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 19:48:38,222 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 19:48:38,223 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 19:48:38,245 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 19:48:38,246 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 19:48:38,246 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 19:48:38,247 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 19:48:38,251 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 19:48:38,252 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 19:48:38,252 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 19:48:38,253 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 19:48:38,254 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 19:48:38,254 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 19:48:38,255 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 19:48:38,255 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 19:48:38,255 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 19:48:38,255 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 19:48:38,255 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 19:48:38,256 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 19:48:38,256 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 19:48:38,256 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 19:48:38,256 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 19:48:38,257 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 19:48:38,257 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 19:48:38,257 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 19:48:38,257 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 19:48:38,258 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 19:48:38,258 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 19:48:38,259 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 19:48:38,259 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 19:48:38,259 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:48:38,259 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 19:48:38,260 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 19:48:38,260 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 19:48:38,260 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 19:48:38,260 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 19:48:38,260 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 19:48:38,260 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 19:48:38,261 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 19:48:38,261 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 19:48:38,261 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 19:48:38,261 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 19:48:38,469 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 19:48:38,491 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 19:48:38,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 19:48:38,494 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 19:48:38,495 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 19:48:38,495 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix005_tso.oepc.i [2024-06-27 19:48:39,601 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 19:48:39,754 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 19:48:39,754 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix005_tso.oepc.i [2024-06-27 19:48:39,764 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75ef913ae/5b684f6cae0d4b0685cd644608fb414d/FLAG83c5f6adf [2024-06-27 19:48:39,774 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75ef913ae/5b684f6cae0d4b0685cd644608fb414d [2024-06-27 19:48:39,776 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 19:48:39,776 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 19:48:39,777 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix005_tso.oepc.yml/witness.yml [2024-06-27 19:48:39,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 19:48:39,976 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 19:48:39,976 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 19:48:39,977 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 19:48:39,980 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 19:48:39,980 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:48:39" (1/2) ... [2024-06-27 19:48:39,981 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f567d36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:48:39, skipping insertion in model container [2024-06-27 19:48:39,982 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:48:39" (1/2) ... [2024-06-27 19:48:39,983 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4016ffb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:48:39, skipping insertion in model container [2024-06-27 19:48:39,983 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:48:39" (2/2) ... [2024-06-27 19:48:39,984 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f567d36 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:48:39, skipping insertion in model container [2024-06-27 19:48:39,984 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:48:39" (2/2) ... [2024-06-27 19:48:39,984 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 19:48:40,075 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 19:48:40,076 INFO L97 edCorrectnessWitness]: Location invariant before [L866-L866] (((((((((((((((((((((((! multithreaded || x$r_buff1_thd3 == (_Bool)0) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) [2024-06-27 19:48:40,077 INFO L97 edCorrectnessWitness]: Location invariant before [L863-L863] (((((((((((((((((((((((! multithreaded || x$r_buff1_thd3 == (_Bool)0) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) [2024-06-27 19:48:40,077 INFO L97 edCorrectnessWitness]: Location invariant before [L861-L861] (((((((((((((((((((((((! multithreaded || x$r_buff1_thd3 == (_Bool)0) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) [2024-06-27 19:48:40,077 INFO L97 edCorrectnessWitness]: Location invariant before [L865-L865] (((((((((((((((((((((((! multithreaded || x$r_buff1_thd3 == (_Bool)0) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) [2024-06-27 19:48:40,077 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 19:48:40,078 INFO L106 edCorrectnessWitness]: ghost_update [L859-L859] multithreaded = 1; [2024-06-27 19:48:40,116 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 19:48:40,414 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:48:40,421 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 19:48:40,506 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:48:40,541 INFO L206 MainTranslator]: Completed translation [2024-06-27 19:48:40,541 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:48:40 WrapperNode [2024-06-27 19:48:40,542 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 19:48:40,542 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 19:48:40,542 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 19:48:40,543 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 19:48:40,548 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:48:40" (1/1) ... [2024-06-27 19:48:40,565 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:48:40" (1/1) ... [2024-06-27 19:48:40,600 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 159 [2024-06-27 19:48:40,601 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 19:48:40,601 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 19:48:40,601 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 19:48:40,601 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 19:48:40,610 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:48:40" (1/1) ... [2024-06-27 19:48:40,610 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:48:40" (1/1) ... [2024-06-27 19:48:40,613 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:48:40" (1/1) ... [2024-06-27 19:48:40,626 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]. [2024-06-27 19:48:40,627 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:48:40" (1/1) ... [2024-06-27 19:48:40,627 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:48:40" (1/1) ... [2024-06-27 19:48:40,656 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:48:40" (1/1) ... [2024-06-27 19:48:40,658 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:48:40" (1/1) ... [2024-06-27 19:48:40,660 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:48:40" (1/1) ... [2024-06-27 19:48:40,661 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:48:40" (1/1) ... [2024-06-27 19:48:40,676 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 19:48:40,677 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 19:48:40,677 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 19:48:40,677 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 19:48:40,678 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:48:40" (1/1) ... [2024-06-27 19:48:40,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:48:40,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 19:48:40,735 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) [2024-06-27 19:48:40,770 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 [2024-06-27 19:48:40,793 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 19:48:40,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 19:48:40,794 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 19:48:40,794 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 19:48:40,794 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 19:48:40,794 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 19:48:40,794 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 19:48:40,795 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 19:48:40,795 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-27 19:48:40,795 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-27 19:48:40,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 19:48:40,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 19:48:40,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 19:48:40,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 19:48:40,804 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 19:48:40,922 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 19:48:40,924 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 19:48:41,236 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 19:48:41,236 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 19:48:41,374 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 19:48:41,374 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 19:48:41,374 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:48:41 BoogieIcfgContainer [2024-06-27 19:48:41,375 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 19:48:41,376 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 19:48:41,376 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 19:48:41,379 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 19:48:41,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 07:48:39" (1/4) ... [2024-06-27 19:48:41,379 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@213d37ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 07:48:41, skipping insertion in model container [2024-06-27 19:48:41,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:48:39" (2/4) ... [2024-06-27 19:48:41,380 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@213d37ba and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 07:48:41, skipping insertion in model container [2024-06-27 19:48:41,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:48:40" (3/4) ... [2024-06-27 19:48:41,380 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@213d37ba and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 07:48:41, skipping insertion in model container [2024-06-27 19:48:41,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:48:41" (4/4) ... [2024-06-27 19:48:41,381 INFO L112 eAbstractionObserver]: Analyzing ICFG mix005_tso.oepc.i [2024-06-27 19:48:41,394 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 19:48:41,394 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 19:48:41,395 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 19:48:41,432 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 19:48:41,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 53 transitions, 122 flow [2024-06-27 19:48:41,475 INFO L124 PetriNetUnfolderBase]: 0/49 cut-off events. [2024-06-27 19:48:41,475 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 19:48:41,478 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 86 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. [2024-06-27 19:48:41,478 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 53 transitions, 122 flow [2024-06-27 19:48:41,480 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 43 transitions, 98 flow [2024-06-27 19:48:41,486 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 19:48:41,491 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;@4c423c48, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 19:48:41,491 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-27 19:48:41,494 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 19:48:41,494 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 19:48:41,494 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 19:48:41,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:48:41,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 19:48:41,495 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)] === [2024-06-27 19:48:41,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:48:41,498 INFO L85 PathProgramCache]: Analyzing trace with hash 409864236, now seen corresponding path program 1 times [2024-06-27 19:48:41,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:48:41,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235874448] [2024-06-27 19:48:41,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:48:41,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:48:41,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:48:42,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:48:42,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:48:42,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235874448] [2024-06-27 19:48:42,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235874448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:48:42,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:48:42,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 19:48:42,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164891198] [2024-06-27 19:48:42,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:48:42,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 19:48:42,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:48:42,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 19:48:42,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 19:48:42,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 53 [2024-06-27 19:48:42,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:42,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:48:42,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 53 [2024-06-27 19:48:42,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:48:43,502 INFO L124 PetriNetUnfolderBase]: 8192/11828 cut-off events. [2024-06-27 19:48:43,503 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2024-06-27 19:48:43,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23391 conditions, 11828 events. 8192/11828 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 68732 event pairs, 6310 based on Foata normal form. 1/11415 useless extension candidates. Maximal degree in co-relation 23378. Up to 11172 conditions per place. [2024-06-27 19:48:43,632 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 42 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-06-27 19:48:43,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 229 flow [2024-06-27 19:48:43,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 19:48:43,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 19:48:43,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2024-06-27 19:48:43,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6226415094339622 [2024-06-27 19:48:43,645 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 98 flow. Second operand 3 states and 99 transitions. [2024-06-27 19:48:43,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 229 flow [2024-06-27 19:48:43,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 57 transitions, 222 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 19:48:43,652 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 133 flow [2024-06-27 19:48:43,654 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} [2024-06-27 19:48:43,657 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2024-06-27 19:48:43,657 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 133 flow [2024-06-27 19:48:43,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:43,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:48:43,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:48:43,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 19:48:43,658 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)] === [2024-06-27 19:48:43,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:48:43,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1257429685, now seen corresponding path program 1 times [2024-06-27 19:48:43,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:48:43,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512299951] [2024-06-27 19:48:43,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:48:43,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:48:43,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:48:44,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:48:44,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:48:44,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512299951] [2024-06-27 19:48:44,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512299951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:48:44,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:48:44,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 19:48:44,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756367567] [2024-06-27 19:48:44,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:48:44,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 19:48:44,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:48:44,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 19:48:44,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 19:48:44,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-27 19:48:44,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:44,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:48:44,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-27 19:48:44,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:48:45,590 INFO L124 PetriNetUnfolderBase]: 9577/13487 cut-off events. [2024-06-27 19:48:45,590 INFO L125 PetriNetUnfolderBase]: For 2586/2586 co-relation queries the response was YES. [2024-06-27 19:48:45,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30336 conditions, 13487 events. 9577/13487 cut-off events. For 2586/2586 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 75993 event pairs, 6775 based on Foata normal form. 4/13410 useless extension candidates. Maximal degree in co-relation 30324. Up to 12982 conditions per place. [2024-06-27 19:48:45,645 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 53 selfloop transitions, 9 changer transitions 0/71 dead transitions. [2024-06-27 19:48:45,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 71 transitions, 323 flow [2024-06-27 19:48:45,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 19:48:45,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 19:48:45,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2024-06-27 19:48:45,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5943396226415094 [2024-06-27 19:48:45,648 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 133 flow. Second operand 4 states and 126 transitions. [2024-06-27 19:48:45,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 71 transitions, 323 flow [2024-06-27 19:48:45,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 71 transitions, 318 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 19:48:45,650 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 181 flow [2024-06-27 19:48:45,650 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} [2024-06-27 19:48:45,650 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2024-06-27 19:48:45,651 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 181 flow [2024-06-27 19:48:45,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:45,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:48:45,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:48:45,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 19:48:45,652 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)] === [2024-06-27 19:48:45,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:48:45,652 INFO L85 PathProgramCache]: Analyzing trace with hash -325613549, now seen corresponding path program 1 times [2024-06-27 19:48:45,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:48:45,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081015596] [2024-06-27 19:48:45,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:48:45,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:48:45,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:48:46,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:48:46,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:48:46,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081015596] [2024-06-27 19:48:46,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081015596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:48:46,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:48:46,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 19:48:46,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797213526] [2024-06-27 19:48:46,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:48:46,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 19:48:46,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:48:46,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 19:48:46,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 19:48:46,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-27 19:48:46,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 181 flow. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:46,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:48:46,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-27 19:48:46,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:48:47,684 INFO L124 PetriNetUnfolderBase]: 9557/13469 cut-off events. [2024-06-27 19:48:47,684 INFO L125 PetriNetUnfolderBase]: For 7351/7351 co-relation queries the response was YES. [2024-06-27 19:48:47,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33693 conditions, 13469 events. 9557/13469 cut-off events. For 7351/7351 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 75958 event pairs, 5407 based on Foata normal form. 8/13388 useless extension candidates. Maximal degree in co-relation 33679. Up to 12912 conditions per place. [2024-06-27 19:48:47,747 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 64 selfloop transitions, 13 changer transitions 0/86 dead transitions. [2024-06-27 19:48:47,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 86 transitions, 435 flow [2024-06-27 19:48:47,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:48:47,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:48:47,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 156 transitions. [2024-06-27 19:48:47,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5886792452830188 [2024-06-27 19:48:47,750 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 181 flow. Second operand 5 states and 156 transitions. [2024-06-27 19:48:47,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 86 transitions, 435 flow [2024-06-27 19:48:47,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 86 transitions, 416 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 19:48:47,753 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 229 flow [2024-06-27 19:48:47,753 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=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=229, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2024-06-27 19:48:47,754 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 5 predicate places. [2024-06-27 19:48:47,754 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 229 flow [2024-06-27 19:48:47,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:47,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:48:47,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:48:47,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 19:48:47,755 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)] === [2024-06-27 19:48:47,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:48:47,755 INFO L85 PathProgramCache]: Analyzing trace with hash 616836454, now seen corresponding path program 1 times [2024-06-27 19:48:47,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:48:47,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825574335] [2024-06-27 19:48:47,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:48:47,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:48:47,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:48:48,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:48:48,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:48:48,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825574335] [2024-06-27 19:48:48,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825574335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:48:48,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:48:48,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:48:48,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235315363] [2024-06-27 19:48:48,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:48:48,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:48:48,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:48:48,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:48:48,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:48:48,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-27 19:48:48,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 229 flow. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:48,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:48:48,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-27 19:48:48,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:48:50,306 INFO L124 PetriNetUnfolderBase]: 9541/13451 cut-off events. [2024-06-27 19:48:50,306 INFO L125 PetriNetUnfolderBase]: For 14157/14157 co-relation queries the response was YES. [2024-06-27 19:48:50,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37009 conditions, 13451 events. 9541/13451 cut-off events. For 14157/14157 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 75896 event pairs, 4602 based on Foata normal form. 8/13362 useless extension candidates. Maximal degree in co-relation 36994. Up to 12846 conditions per place. [2024-06-27 19:48:50,372 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 71 selfloop transitions, 16 changer transitions 0/96 dead transitions. [2024-06-27 19:48:50,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 96 transitions, 519 flow [2024-06-27 19:48:50,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:48:50,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:48:50,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 181 transitions. [2024-06-27 19:48:50,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5691823899371069 [2024-06-27 19:48:50,376 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 229 flow. Second operand 6 states and 181 transitions. [2024-06-27 19:48:50,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 96 transitions, 519 flow [2024-06-27 19:48:50,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 96 transitions, 486 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 19:48:50,382 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 260 flow [2024-06-27 19:48:50,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=260, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2024-06-27 19:48:50,384 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 7 predicate places. [2024-06-27 19:48:50,384 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 260 flow [2024-06-27 19:48:50,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:50,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:48:50,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:48:50,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 19:48:50,385 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)] === [2024-06-27 19:48:50,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:48:50,385 INFO L85 PathProgramCache]: Analyzing trace with hash 154868032, now seen corresponding path program 1 times [2024-06-27 19:48:50,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:48:50,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230321809] [2024-06-27 19:48:50,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:48:50,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:48:50,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:48:51,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:48:51,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:48:51,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230321809] [2024-06-27 19:48:51,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230321809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:48:51,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:48:51,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:48:51,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194834412] [2024-06-27 19:48:51,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:48:51,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:48:51,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:48:51,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:48:51,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:48:51,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-27 19:48:51,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 260 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:51,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:48:51,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-27 19:48:51,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:48:52,328 INFO L124 PetriNetUnfolderBase]: 8137/11864 cut-off events. [2024-06-27 19:48:52,329 INFO L125 PetriNetUnfolderBase]: For 19046/19046 co-relation queries the response was YES. [2024-06-27 19:48:52,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34736 conditions, 11864 events. 8137/11864 cut-off events. For 19046/19046 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 69948 event pairs, 4690 based on Foata normal form. 3/11673 useless extension candidates. Maximal degree in co-relation 34719. Up to 11079 conditions per place. [2024-06-27 19:48:52,396 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 59 selfloop transitions, 10 changer transitions 0/78 dead transitions. [2024-06-27 19:48:52,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 78 transitions, 468 flow [2024-06-27 19:48:52,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:48:52,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:48:52,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-06-27 19:48:52,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49433962264150944 [2024-06-27 19:48:52,399 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 260 flow. Second operand 5 states and 131 transitions. [2024-06-27 19:48:52,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 78 transitions, 468 flow [2024-06-27 19:48:52,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 78 transitions, 422 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 19:48:52,406 INFO L231 Difference]: Finished difference. Result has 64 places, 61 transitions, 279 flow [2024-06-27 19:48:52,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=279, PETRI_PLACES=64, PETRI_TRANSITIONS=61} [2024-06-27 19:48:52,411 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 8 predicate places. [2024-06-27 19:48:52,412 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 279 flow [2024-06-27 19:48:52,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:52,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:48:52,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:48:52,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 19:48:52,413 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)] === [2024-06-27 19:48:52,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:48:52,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1979124607, now seen corresponding path program 1 times [2024-06-27 19:48:52,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:48:52,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378762204] [2024-06-27 19:48:52,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:48:52,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:48:52,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:48:53,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:48:53,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:48:53,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378762204] [2024-06-27 19:48:53,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378762204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:48:53,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:48:53,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:48:53,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430935206] [2024-06-27 19:48:53,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:48:53,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:48:53,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:48:53,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:48:53,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:48:53,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-27 19:48:53,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 61 transitions, 279 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) [2024-06-27 19:48:53,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:48:53,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-27 19:48:53,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:48:54,765 INFO L124 PetriNetUnfolderBase]: 9554/13523 cut-off events. [2024-06-27 19:48:54,765 INFO L125 PetriNetUnfolderBase]: For 32186/32186 co-relation queries the response was YES. [2024-06-27 19:48:54,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43062 conditions, 13523 events. 9554/13523 cut-off events. For 32186/32186 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 76937 event pairs, 5494 based on Foata normal form. 3/13475 useless extension candidates. Maximal degree in co-relation 43043. Up to 12933 conditions per place. [2024-06-27 19:48:54,832 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 70 selfloop transitions, 14 changer transitions 0/92 dead transitions. [2024-06-27 19:48:54,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 92 transitions, 549 flow [2024-06-27 19:48:54,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:48:54,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:48:54,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-06-27 19:48:54,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48427672955974843 [2024-06-27 19:48:54,833 INFO L175 Difference]: Start difference. First operand has 64 places, 61 transitions, 279 flow. Second operand 6 states and 154 transitions. [2024-06-27 19:48:54,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 92 transitions, 549 flow [2024-06-27 19:48:54,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 92 transitions, 516 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-27 19:48:54,838 INFO L231 Difference]: Finished difference. Result has 67 places, 65 transitions, 325 flow [2024-06-27 19:48:54,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=325, PETRI_PLACES=67, PETRI_TRANSITIONS=65} [2024-06-27 19:48:54,839 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 11 predicate places. [2024-06-27 19:48:54,839 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 65 transitions, 325 flow [2024-06-27 19:48:54,839 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) [2024-06-27 19:48:54,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:48:54,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:48:54,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 19:48:54,840 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)] === [2024-06-27 19:48:54,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:48:54,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1979274337, now seen corresponding path program 2 times [2024-06-27 19:48:54,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:48:54,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945141373] [2024-06-27 19:48:54,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:48:54,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:48:54,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:48:55,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:48:55,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:48:55,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945141373] [2024-06-27 19:48:55,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945141373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:48:55,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:48:55,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:48:55,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561843444] [2024-06-27 19:48:55,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:48:55,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:48:55,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:48:55,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:48:55,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:48:55,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-27 19:48:55,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 65 transitions, 325 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) [2024-06-27 19:48:55,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:48:55,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-27 19:48:55,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:48:57,079 INFO L124 PetriNetUnfolderBase]: 9545/13556 cut-off events. [2024-06-27 19:48:57,080 INFO L125 PetriNetUnfolderBase]: For 43567/43583 co-relation queries the response was YES. [2024-06-27 19:48:57,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46388 conditions, 13556 events. 9545/13556 cut-off events. For 43567/43583 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 77461 event pairs, 5476 based on Foata normal form. 15/13520 useless extension candidates. Maximal degree in co-relation 46368. Up to 12891 conditions per place. [2024-06-27 19:48:57,171 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 64 selfloop transitions, 21 changer transitions 0/93 dead transitions. [2024-06-27 19:48:57,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 93 transitions, 597 flow [2024-06-27 19:48:57,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:48:57,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:48:57,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-06-27 19:48:57,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4811320754716981 [2024-06-27 19:48:57,173 INFO L175 Difference]: Start difference. First operand has 67 places, 65 transitions, 325 flow. Second operand 6 states and 153 transitions. [2024-06-27 19:48:57,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 93 transitions, 597 flow [2024-06-27 19:48:57,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 93 transitions, 550 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 19:48:57,183 INFO L231 Difference]: Finished difference. Result has 69 places, 69 transitions, 379 flow [2024-06-27 19:48:57,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=379, PETRI_PLACES=69, PETRI_TRANSITIONS=69} [2024-06-27 19:48:57,184 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 13 predicate places. [2024-06-27 19:48:57,184 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 69 transitions, 379 flow [2024-06-27 19:48:57,184 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) [2024-06-27 19:48:57,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:48:57,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:48:57,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 19:48:57,185 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)] === [2024-06-27 19:48:57,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:48:57,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1495625441, now seen corresponding path program 1 times [2024-06-27 19:48:57,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:48:57,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353742828] [2024-06-27 19:48:57,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:48:57,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:48:57,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:48:58,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:48:58,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:48:58,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353742828] [2024-06-27 19:48:58,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353742828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:48:58,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:48:58,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:48:58,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128579326] [2024-06-27 19:48:58,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:48:58,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:48:58,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:48:58,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:48:58,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:48:58,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-27 19:48:58,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 69 transitions, 379 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) [2024-06-27 19:48:58,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:48:58,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-27 19:48:58,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:48:59,645 INFO L124 PetriNetUnfolderBase]: 9900/14313 cut-off events. [2024-06-27 19:48:59,645 INFO L125 PetriNetUnfolderBase]: For 57352/57352 co-relation queries the response was YES. [2024-06-27 19:48:59,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51458 conditions, 14313 events. 9900/14313 cut-off events. For 57352/57352 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 84100 event pairs, 5554 based on Foata normal form. 3/14082 useless extension candidates. Maximal degree in co-relation 51437. Up to 13410 conditions per place. [2024-06-27 19:48:59,727 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 82 selfloop transitions, 18 changer transitions 0/108 dead transitions. [2024-06-27 19:48:59,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 108 transitions, 720 flow [2024-06-27 19:48:59,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:48:59,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:48:59,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-27 19:48:59,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4716981132075472 [2024-06-27 19:48:59,729 INFO L175 Difference]: Start difference. First operand has 69 places, 69 transitions, 379 flow. Second operand 7 states and 175 transitions. [2024-06-27 19:48:59,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 108 transitions, 720 flow [2024-06-27 19:48:59,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 108 transitions, 646 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-27 19:48:59,738 INFO L231 Difference]: Finished difference. Result has 73 places, 77 transitions, 428 flow [2024-06-27 19:48:59,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=428, PETRI_PLACES=73, PETRI_TRANSITIONS=77} [2024-06-27 19:48:59,739 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 17 predicate places. [2024-06-27 19:48:59,739 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 77 transitions, 428 flow [2024-06-27 19:48:59,740 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) [2024-06-27 19:48:59,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:48:59,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:48:59,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 19:48:59,740 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)] === [2024-06-27 19:48:59,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:48:59,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1223202115, now seen corresponding path program 1 times [2024-06-27 19:48:59,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:48:59,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103923483] [2024-06-27 19:48:59,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:48:59,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:48:59,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:00,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:00,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:00,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103923483] [2024-06-27 19:49:00,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103923483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:00,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:00,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:49:00,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287077441] [2024-06-27 19:49:00,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:00,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:49:00,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:00,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:49:00,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:49:00,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-27 19:49:00,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 77 transitions, 428 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) [2024-06-27 19:49:00,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:00,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-27 19:49:00,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:02,274 INFO L124 PetriNetUnfolderBase]: 11376/16005 cut-off events. [2024-06-27 19:49:02,274 INFO L125 PetriNetUnfolderBase]: For 86881/86881 co-relation queries the response was YES. [2024-06-27 19:49:02,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63254 conditions, 16005 events. 11376/16005 cut-off events. For 86881/86881 co-relation queries the response was YES. Maximal size of possible extension queue 609. Compared 92319 event pairs, 5611 based on Foata normal form. 6/15959 useless extension candidates. Maximal degree in co-relation 63231. Up to 15319 conditions per place. [2024-06-27 19:49:02,370 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 92 selfloop transitions, 22 changer transitions 0/123 dead transitions. [2024-06-27 19:49:02,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 123 transitions, 816 flow [2024-06-27 19:49:02,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:49:02,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:49:02,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-27 19:49:02,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49326145552560646 [2024-06-27 19:49:02,372 INFO L175 Difference]: Start difference. First operand has 73 places, 77 transitions, 428 flow. Second operand 7 states and 183 transitions. [2024-06-27 19:49:02,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 123 transitions, 816 flow [2024-06-27 19:49:02,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 123 transitions, 755 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-27 19:49:02,389 INFO L231 Difference]: Finished difference. Result has 77 places, 85 transitions, 499 flow [2024-06-27 19:49:02,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=499, PETRI_PLACES=77, PETRI_TRANSITIONS=85} [2024-06-27 19:49:02,390 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 21 predicate places. [2024-06-27 19:49:02,390 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 85 transitions, 499 flow [2024-06-27 19:49:02,390 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) [2024-06-27 19:49:02,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:02,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:02,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 19:49:02,391 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)] === [2024-06-27 19:49:02,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:02,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1223322085, now seen corresponding path program 2 times [2024-06-27 19:49:02,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:02,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004558456] [2024-06-27 19:49:02,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:02,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:02,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:03,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:03,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:03,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004558456] [2024-06-27 19:49:03,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004558456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:03,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:03,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:49:03,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547372443] [2024-06-27 19:49:03,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:03,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:49:03,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:03,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:49:03,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:49:03,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-27 19:49:03,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 85 transitions, 499 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) [2024-06-27 19:49:03,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:03,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-27 19:49:03,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:04,925 INFO L124 PetriNetUnfolderBase]: 11600/16285 cut-off events. [2024-06-27 19:49:04,926 INFO L125 PetriNetUnfolderBase]: For 112986/112986 co-relation queries the response was YES. [2024-06-27 19:49:04,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69960 conditions, 16285 events. 11600/16285 cut-off events. For 112986/112986 co-relation queries the response was YES. Maximal size of possible extension queue 606. Compared 93636 event pairs, 5423 based on Foata normal form. 12/16221 useless extension candidates. Maximal degree in co-relation 69935. Up to 15434 conditions per place. [2024-06-27 19:49:05,054 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 94 selfloop transitions, 32 changer transitions 0/135 dead transitions. [2024-06-27 19:49:05,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 135 transitions, 1035 flow [2024-06-27 19:49:05,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:49:05,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:49:05,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-06-27 19:49:05,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067385444743935 [2024-06-27 19:49:05,056 INFO L175 Difference]: Start difference. First operand has 77 places, 85 transitions, 499 flow. Second operand 7 states and 188 transitions. [2024-06-27 19:49:05,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 135 transitions, 1035 flow [2024-06-27 19:49:05,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 135 transitions, 971 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-27 19:49:05,080 INFO L231 Difference]: Finished difference. Result has 82 places, 95 transitions, 657 flow [2024-06-27 19:49:05,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=657, PETRI_PLACES=82, PETRI_TRANSITIONS=95} [2024-06-27 19:49:05,081 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 26 predicate places. [2024-06-27 19:49:05,081 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 95 transitions, 657 flow [2024-06-27 19:49:05,081 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) [2024-06-27 19:49:05,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:05,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:05,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 19:49:05,082 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)] === [2024-06-27 19:49:05,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:05,082 INFO L85 PathProgramCache]: Analyzing trace with hash 880006981, now seen corresponding path program 3 times [2024-06-27 19:49:05,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:05,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915140351] [2024-06-27 19:49:05,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:05,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:05,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:05,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:05,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:05,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915140351] [2024-06-27 19:49:05,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915140351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:05,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:05,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:49:05,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984255425] [2024-06-27 19:49:05,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:05,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:49:05,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:05,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:49:05,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:49:05,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-27 19:49:05,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 95 transitions, 657 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) [2024-06-27 19:49:05,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:05,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-27 19:49:05,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:07,632 INFO L124 PetriNetUnfolderBase]: 11638/16342 cut-off events. [2024-06-27 19:49:07,632 INFO L125 PetriNetUnfolderBase]: For 143997/144016 co-relation queries the response was YES. [2024-06-27 19:49:07,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76107 conditions, 16342 events. 11638/16342 cut-off events. For 143997/144016 co-relation queries the response was YES. Maximal size of possible extension queue 602. Compared 93749 event pairs, 5132 based on Foata normal form. 22/16282 useless extension candidates. Maximal degree in co-relation 76080. Up to 15296 conditions per place. [2024-06-27 19:49:07,791 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 86 selfloop transitions, 51 changer transitions 0/146 dead transitions. [2024-06-27 19:49:07,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 146 transitions, 1305 flow [2024-06-27 19:49:07,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:49:07,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:49:07,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 193 transitions. [2024-06-27 19:49:07,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5202156334231806 [2024-06-27 19:49:07,793 INFO L175 Difference]: Start difference. First operand has 82 places, 95 transitions, 657 flow. Second operand 7 states and 193 transitions. [2024-06-27 19:49:07,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 146 transitions, 1305 flow [2024-06-27 19:49:07,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 146 transitions, 1237 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-27 19:49:07,841 INFO L231 Difference]: Finished difference. Result has 87 places, 105 transitions, 866 flow [2024-06-27 19:49:07,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=866, PETRI_PLACES=87, PETRI_TRANSITIONS=105} [2024-06-27 19:49:07,841 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 31 predicate places. [2024-06-27 19:49:07,842 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 105 transitions, 866 flow [2024-06-27 19:49:07,842 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) [2024-06-27 19:49:07,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:07,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:07,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 19:49:07,842 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)] === [2024-06-27 19:49:07,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:07,843 INFO L85 PathProgramCache]: Analyzing trace with hash 880253245, now seen corresponding path program 1 times [2024-06-27 19:49:07,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:07,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178630735] [2024-06-27 19:49:07,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:07,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:07,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:08,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:08,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:08,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178630735] [2024-06-27 19:49:08,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178630735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:08,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:08,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:49:08,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276040026] [2024-06-27 19:49:08,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:08,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:49:08,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:08,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:49:08,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:49:09,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-27 19:49:09,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 105 transitions, 866 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:09,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:09,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-27 19:49:09,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:10,706 INFO L124 PetriNetUnfolderBase]: 10292/14756 cut-off events. [2024-06-27 19:49:10,706 INFO L125 PetriNetUnfolderBase]: For 145461/145461 co-relation queries the response was YES. [2024-06-27 19:49:10,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71330 conditions, 14756 events. 10292/14756 cut-off events. For 145461/145461 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 85559 event pairs, 4453 based on Foata normal form. 6/14505 useless extension candidates. Maximal degree in co-relation 71300. Up to 13917 conditions per place. [2024-06-27 19:49:10,808 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 118 selfloop transitions, 21 changer transitions 0/147 dead transitions. [2024-06-27 19:49:10,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 147 transitions, 1300 flow [2024-06-27 19:49:10,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:49:10,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:49:10,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-27 19:49:10,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4693396226415094 [2024-06-27 19:49:10,810 INFO L175 Difference]: Start difference. First operand has 87 places, 105 transitions, 866 flow. Second operand 8 states and 199 transitions. [2024-06-27 19:49:10,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 147 transitions, 1300 flow [2024-06-27 19:49:10,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 147 transitions, 1151 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-06-27 19:49:10,873 INFO L231 Difference]: Finished difference. Result has 91 places, 108 transitions, 831 flow [2024-06-27 19:49:10,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=831, PETRI_PLACES=91, PETRI_TRANSITIONS=108} [2024-06-27 19:49:10,874 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 35 predicate places. [2024-06-27 19:49:10,874 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 108 transitions, 831 flow [2024-06-27 19:49:10,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:10,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:10,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:10,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 19:49:10,875 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:49:10,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:10,875 INFO L85 PathProgramCache]: Analyzing trace with hash -127483921, now seen corresponding path program 1 times [2024-06-27 19:49:10,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:10,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653726727] [2024-06-27 19:49:10,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:10,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:11,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:11,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:11,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653726727] [2024-06-27 19:49:11,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653726727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:11,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:11,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:49:11,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090946295] [2024-06-27 19:49:11,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:11,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:49:11,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:11,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:49:11,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:49:11,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-27 19:49:11,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 108 transitions, 831 flow. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:11,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:11,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-27 19:49:11,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:13,388 INFO L124 PetriNetUnfolderBase]: 12361/17616 cut-off events. [2024-06-27 19:49:13,389 INFO L125 PetriNetUnfolderBase]: For 172796/172796 co-relation queries the response was YES. [2024-06-27 19:49:13,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83236 conditions, 17616 events. 12361/17616 cut-off events. For 172796/172796 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 101284 event pairs, 5561 based on Foata normal form. 2/17383 useless extension candidates. Maximal degree in co-relation 83205. Up to 16734 conditions per place. [2024-06-27 19:49:13,505 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 109 selfloop transitions, 10 changer transitions 0/126 dead transitions. [2024-06-27 19:49:13,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 126 transitions, 1151 flow [2024-06-27 19:49:13,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:49:13,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:49:13,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-06-27 19:49:13,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4490566037735849 [2024-06-27 19:49:13,507 INFO L175 Difference]: Start difference. First operand has 91 places, 108 transitions, 831 flow. Second operand 5 states and 119 transitions. [2024-06-27 19:49:13,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 126 transitions, 1151 flow [2024-06-27 19:49:13,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 126 transitions, 1067 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-27 19:49:13,557 INFO L231 Difference]: Finished difference. Result has 90 places, 112 transitions, 830 flow [2024-06-27 19:49:13,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=747, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=830, PETRI_PLACES=90, PETRI_TRANSITIONS=112} [2024-06-27 19:49:13,557 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 34 predicate places. [2024-06-27 19:49:13,557 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 112 transitions, 830 flow [2024-06-27 19:49:13,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:13,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:13,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:13,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 19:49:13,558 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:49:13,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:13,558 INFO L85 PathProgramCache]: Analyzing trace with hash 310581464, now seen corresponding path program 1 times [2024-06-27 19:49:13,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:13,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302061747] [2024-06-27 19:49:13,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:13,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:13,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:14,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:14,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:14,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302061747] [2024-06-27 19:49:14,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302061747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:14,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:14,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:49:14,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187993115] [2024-06-27 19:49:14,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:14,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:49:14,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:14,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:49:14,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:49:14,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-27 19:49:14,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 112 transitions, 830 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:14,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:14,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-27 19:49:14,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:16,922 INFO L124 PetriNetUnfolderBase]: 13208/18644 cut-off events. [2024-06-27 19:49:16,923 INFO L125 PetriNetUnfolderBase]: For 239072/239096 co-relation queries the response was YES. [2024-06-27 19:49:16,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96845 conditions, 18644 events. 13208/18644 cut-off events. For 239072/239096 co-relation queries the response was YES. Maximal size of possible extension queue 669. Compared 108791 event pairs, 5846 based on Foata normal form. 3/18533 useless extension candidates. Maximal degree in co-relation 96813. Up to 17617 conditions per place. [2024-06-27 19:49:17,086 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 119 selfloop transitions, 25 changer transitions 0/154 dead transitions. [2024-06-27 19:49:17,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 154 transitions, 1287 flow [2024-06-27 19:49:17,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:49:17,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:49:17,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-27 19:49:17,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49326145552560646 [2024-06-27 19:49:17,088 INFO L175 Difference]: Start difference. First operand has 90 places, 112 transitions, 830 flow. Second operand 7 states and 183 transitions. [2024-06-27 19:49:17,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 154 transitions, 1287 flow [2024-06-27 19:49:17,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 154 transitions, 1234 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-27 19:49:17,144 INFO L231 Difference]: Finished difference. Result has 94 places, 116 transitions, 920 flow [2024-06-27 19:49:17,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=777, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=920, PETRI_PLACES=94, PETRI_TRANSITIONS=116} [2024-06-27 19:49:17,145 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 38 predicate places. [2024-06-27 19:49:17,145 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 116 transitions, 920 flow [2024-06-27 19:49:17,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:17,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:17,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:17,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 19:49:17,145 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)] === [2024-06-27 19:49:17,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:17,146 INFO L85 PathProgramCache]: Analyzing trace with hash 376723668, now seen corresponding path program 1 times [2024-06-27 19:49:17,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:17,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530823742] [2024-06-27 19:49:17,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:17,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:18,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:18,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:18,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530823742] [2024-06-27 19:49:18,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530823742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:18,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:18,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:49:18,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132869315] [2024-06-27 19:49:18,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:18,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:49:18,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:18,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:49:18,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:49:18,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-27 19:49:18,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 116 transitions, 920 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) [2024-06-27 19:49:18,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:18,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-27 19:49:18,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:20,380 INFO L124 PetriNetUnfolderBase]: 13540/19045 cut-off events. [2024-06-27 19:49:20,381 INFO L125 PetriNetUnfolderBase]: For 252245/252245 co-relation queries the response was YES. [2024-06-27 19:49:20,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97767 conditions, 19045 events. 13540/19045 cut-off events. For 252245/252245 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 108640 event pairs, 5664 based on Foata normal form. 9/18981 useless extension candidates. Maximal degree in co-relation 97734. Up to 17803 conditions per place. [2024-06-27 19:49:20,724 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 120 selfloop transitions, 48 changer transitions 0/176 dead transitions. [2024-06-27 19:49:20,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 176 transitions, 1524 flow [2024-06-27 19:49:20,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:49:20,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:49:20,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-27 19:49:20,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47877358490566035 [2024-06-27 19:49:20,726 INFO L175 Difference]: Start difference. First operand has 94 places, 116 transitions, 920 flow. Second operand 8 states and 203 transitions. [2024-06-27 19:49:20,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 176 transitions, 1524 flow [2024-06-27 19:49:20,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 176 transitions, 1374 flow, removed 52 selfloop flow, removed 5 redundant places. [2024-06-27 19:49:20,802 INFO L231 Difference]: Finished difference. Result has 98 places, 131 transitions, 1046 flow [2024-06-27 19:49:20,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=810, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1046, PETRI_PLACES=98, PETRI_TRANSITIONS=131} [2024-06-27 19:49:20,802 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 42 predicate places. [2024-06-27 19:49:20,802 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 131 transitions, 1046 flow [2024-06-27 19:49:20,803 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) [2024-06-27 19:49:20,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:20,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:20,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 19:49:20,803 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)] === [2024-06-27 19:49:20,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:20,804 INFO L85 PathProgramCache]: Analyzing trace with hash 458200736, now seen corresponding path program 2 times [2024-06-27 19:49:20,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:20,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432386428] [2024-06-27 19:49:20,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:20,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:20,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:21,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:21,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:21,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432386428] [2024-06-27 19:49:21,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432386428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:21,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:21,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:49:21,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859864277] [2024-06-27 19:49:21,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:21,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:49:21,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:21,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:49:21,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:49:21,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-27 19:49:21,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 131 transitions, 1046 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) [2024-06-27 19:49:21,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:21,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-27 19:49:21,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:23,845 INFO L124 PetriNetUnfolderBase]: 13672/19232 cut-off events. [2024-06-27 19:49:23,846 INFO L125 PetriNetUnfolderBase]: For 276865/276884 co-relation queries the response was YES. [2024-06-27 19:49:23,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101033 conditions, 19232 events. 13672/19232 cut-off events. For 276865/276884 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 109571 event pairs, 5691 based on Foata normal form. 19/19174 useless extension candidates. Maximal degree in co-relation 100998. Up to 17826 conditions per place. [2024-06-27 19:49:24,023 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 114 selfloop transitions, 68 changer transitions 0/190 dead transitions. [2024-06-27 19:49:24,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 190 transitions, 1666 flow [2024-06-27 19:49:24,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:49:24,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:49:24,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-27 19:49:24,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4858490566037736 [2024-06-27 19:49:24,025 INFO L175 Difference]: Start difference. First operand has 98 places, 131 transitions, 1046 flow. Second operand 8 states and 206 transitions. [2024-06-27 19:49:24,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 190 transitions, 1666 flow [2024-06-27 19:49:24,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 190 transitions, 1592 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-27 19:49:24,135 INFO L231 Difference]: Finished difference. Result has 103 places, 147 transitions, 1283 flow [2024-06-27 19:49:24,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=972, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1283, PETRI_PLACES=103, PETRI_TRANSITIONS=147} [2024-06-27 19:49:24,136 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 47 predicate places. [2024-06-27 19:49:24,136 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 147 transitions, 1283 flow [2024-06-27 19:49:24,136 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) [2024-06-27 19:49:24,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:24,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:24,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 19:49:24,137 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)] === [2024-06-27 19:49:24,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:24,137 INFO L85 PathProgramCache]: Analyzing trace with hash -587613854, now seen corresponding path program 3 times [2024-06-27 19:49:24,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:24,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702118992] [2024-06-27 19:49:24,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:24,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:24,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:25,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:25,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:25,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702118992] [2024-06-27 19:49:25,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702118992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:25,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:25,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:49:25,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95206421] [2024-06-27 19:49:25,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:25,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:49:25,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:25,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:49:25,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:49:25,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-27 19:49:25,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 147 transitions, 1283 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) [2024-06-27 19:49:25,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:25,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-27 19:49:25,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:27,462 INFO L124 PetriNetUnfolderBase]: 13694/19262 cut-off events. [2024-06-27 19:49:27,462 INFO L125 PetriNetUnfolderBase]: For 302215/302234 co-relation queries the response was YES. [2024-06-27 19:49:27,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104069 conditions, 19262 events. 13694/19262 cut-off events. For 302215/302234 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 109655 event pairs, 5667 based on Foata normal form. 13/19198 useless extension candidates. Maximal degree in co-relation 104031. Up to 17684 conditions per place. [2024-06-27 19:49:27,653 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 103 selfloop transitions, 91 changer transitions 0/202 dead transitions. [2024-06-27 19:49:27,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 202 transitions, 2013 flow [2024-06-27 19:49:27,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:49:27,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:49:27,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-06-27 19:49:27,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4882075471698113 [2024-06-27 19:49:27,671 INFO L175 Difference]: Start difference. First operand has 103 places, 147 transitions, 1283 flow. Second operand 8 states and 207 transitions. [2024-06-27 19:49:27,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 202 transitions, 2013 flow [2024-06-27 19:49:27,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 202 transitions, 1908 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-27 19:49:27,803 INFO L231 Difference]: Finished difference. Result has 108 places, 156 transitions, 1488 flow [2024-06-27 19:49:27,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1178, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1488, PETRI_PLACES=108, PETRI_TRANSITIONS=156} [2024-06-27 19:49:27,803 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 52 predicate places. [2024-06-27 19:49:27,803 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 156 transitions, 1488 flow [2024-06-27 19:49:27,803 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) [2024-06-27 19:49:27,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:27,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:27,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 19:49:27,804 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:49:27,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:27,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1517771680, now seen corresponding path program 4 times [2024-06-27 19:49:27,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:27,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418424241] [2024-06-27 19:49:27,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:27,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:27,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:28,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:28,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:28,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418424241] [2024-06-27 19:49:28,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418424241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:28,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:28,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:49:28,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207691660] [2024-06-27 19:49:28,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:28,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:49:28,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:28,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:49:28,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:49:29,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-27 19:49:29,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 156 transitions, 1488 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) [2024-06-27 19:49:29,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:29,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-27 19:49:29,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:31,708 INFO L124 PetriNetUnfolderBase]: 13655/19208 cut-off events. [2024-06-27 19:49:31,709 INFO L125 PetriNetUnfolderBase]: For 324046/324065 co-relation queries the response was YES. [2024-06-27 19:49:31,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105511 conditions, 19208 events. 13655/19208 cut-off events. For 324046/324065 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 109449 event pairs, 5667 based on Foata normal form. 19/19150 useless extension candidates. Maximal degree in co-relation 105471. Up to 17802 conditions per place. [2024-06-27 19:49:31,847 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 119 selfloop transitions, 74 changer transitions 0/201 dead transitions. [2024-06-27 19:49:31,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 201 transitions, 2011 flow [2024-06-27 19:49:31,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:49:31,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:49:31,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-27 19:49:31,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4834905660377358 [2024-06-27 19:49:31,849 INFO L175 Difference]: Start difference. First operand has 108 places, 156 transitions, 1488 flow. Second operand 8 states and 205 transitions. [2024-06-27 19:49:31,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 201 transitions, 2011 flow [2024-06-27 19:49:32,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 201 transitions, 1822 flow, removed 50 selfloop flow, removed 3 redundant places. [2024-06-27 19:49:32,057 INFO L231 Difference]: Finished difference. Result has 113 places, 156 transitions, 1460 flow [2024-06-27 19:49:32,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1299, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1460, PETRI_PLACES=113, PETRI_TRANSITIONS=156} [2024-06-27 19:49:32,058 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 57 predicate places. [2024-06-27 19:49:32,058 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 156 transitions, 1460 flow [2024-06-27 19:49:32,058 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) [2024-06-27 19:49:32,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:32,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:32,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 19:49:32,059 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:49:32,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:32,059 INFO L85 PathProgramCache]: Analyzing trace with hash 342967079, now seen corresponding path program 1 times [2024-06-27 19:49:32,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:32,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502603032] [2024-06-27 19:49:32,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:32,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:32,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:32,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:32,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:32,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502603032] [2024-06-27 19:49:32,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502603032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:32,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:32,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:49:32,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114692792] [2024-06-27 19:49:32,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:32,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:49:32,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:32,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:49:32,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:49:32,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-27 19:49:32,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 156 transitions, 1460 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) [2024-06-27 19:49:32,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:32,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-27 19:49:32,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:35,203 INFO L124 PetriNetUnfolderBase]: 12405/17737 cut-off events. [2024-06-27 19:49:35,203 INFO L125 PetriNetUnfolderBase]: For 303415/303415 co-relation queries the response was YES. [2024-06-27 19:49:35,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96115 conditions, 17737 events. 12405/17737 cut-off events. For 303415/303415 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 102755 event pairs, 5091 based on Foata normal form. 4/17616 useless extension candidates. Maximal degree in co-relation 96074. Up to 16776 conditions per place. [2024-06-27 19:49:35,324 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 158 selfloop transitions, 14 changer transitions 0/179 dead transitions. [2024-06-27 19:49:35,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 179 transitions, 1904 flow [2024-06-27 19:49:35,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:49:35,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:49:35,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-27 19:49:35,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44025157232704404 [2024-06-27 19:49:35,325 INFO L175 Difference]: Start difference. First operand has 113 places, 156 transitions, 1460 flow. Second operand 6 states and 140 transitions. [2024-06-27 19:49:35,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 179 transitions, 1904 flow [2024-06-27 19:49:35,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 179 transitions, 1672 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 19:49:35,464 INFO L231 Difference]: Finished difference. Result has 111 places, 160 transitions, 1325 flow [2024-06-27 19:49:35,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1228, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1325, PETRI_PLACES=111, PETRI_TRANSITIONS=160} [2024-06-27 19:49:35,465 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 55 predicate places. [2024-06-27 19:49:35,465 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 160 transitions, 1325 flow [2024-06-27 19:49:35,465 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) [2024-06-27 19:49:35,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:35,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:35,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 19:49:35,466 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)] === [2024-06-27 19:49:35,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:35,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1035350626, now seen corresponding path program 1 times [2024-06-27 19:49:35,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:35,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620273145] [2024-06-27 19:49:35,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:35,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:35,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:36,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:36,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:36,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620273145] [2024-06-27 19:49:36,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620273145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:36,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:36,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:49:36,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479841117] [2024-06-27 19:49:36,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:36,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:49:36,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:36,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:49:36,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:49:36,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-27 19:49:36,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 160 transitions, 1325 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:36,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:36,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-27 19:49:36,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:38,981 INFO L124 PetriNetUnfolderBase]: 13063/18632 cut-off events. [2024-06-27 19:49:38,981 INFO L125 PetriNetUnfolderBase]: For 392817/392863 co-relation queries the response was YES. [2024-06-27 19:49:39,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108669 conditions, 18632 events. 13063/18632 cut-off events. For 392817/392863 co-relation queries the response was YES. Maximal size of possible extension queue 666. Compared 109945 event pairs, 4426 based on Foata normal form. 14/18563 useless extension candidates. Maximal degree in co-relation 108627. Up to 17481 conditions per place. [2024-06-27 19:49:39,123 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 174 selfloop transitions, 23 changer transitions 0/209 dead transitions. [2024-06-27 19:49:39,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 209 transitions, 1905 flow [2024-06-27 19:49:39,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:49:39,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:49:39,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-27 19:49:39,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4858490566037736 [2024-06-27 19:49:39,125 INFO L175 Difference]: Start difference. First operand has 111 places, 160 transitions, 1325 flow. Second operand 8 states and 206 transitions. [2024-06-27 19:49:39,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 209 transitions, 1905 flow [2024-06-27 19:49:39,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 209 transitions, 1838 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-27 19:49:39,262 INFO L231 Difference]: Finished difference. Result has 115 places, 163 transitions, 1388 flow [2024-06-27 19:49:39,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1258, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1388, PETRI_PLACES=115, PETRI_TRANSITIONS=163} [2024-06-27 19:49:39,263 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 59 predicate places. [2024-06-27 19:49:39,263 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 163 transitions, 1388 flow [2024-06-27 19:49:39,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:39,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:39,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:39,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 19:49:39,264 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)] === [2024-06-27 19:49:39,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:39,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1038092266, now seen corresponding path program 2 times [2024-06-27 19:49:39,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:39,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539008516] [2024-06-27 19:49:39,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:39,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:39,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:40,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:40,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:40,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539008516] [2024-06-27 19:49:40,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539008516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:40,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:40,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:49:40,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671748894] [2024-06-27 19:49:40,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:40,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:49:40,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:40,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:49:40,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:49:40,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-27 19:49:40,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 163 transitions, 1388 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:40,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:40,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-27 19:49:40,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:42,764 INFO L124 PetriNetUnfolderBase]: 13128/18705 cut-off events. [2024-06-27 19:49:42,765 INFO L125 PetriNetUnfolderBase]: For 443177/443223 co-relation queries the response was YES. [2024-06-27 19:49:42,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113069 conditions, 18705 events. 13128/18705 cut-off events. For 443177/443223 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 110643 event pairs, 5036 based on Foata normal form. 20/18621 useless extension candidates. Maximal degree in co-relation 113026. Up to 17523 conditions per place. [2024-06-27 19:49:42,943 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 166 selfloop transitions, 34 changer transitions 0/212 dead transitions. [2024-06-27 19:49:42,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 212 transitions, 1982 flow [2024-06-27 19:49:42,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:49:42,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:49:42,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-06-27 19:49:42,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4882075471698113 [2024-06-27 19:49:42,945 INFO L175 Difference]: Start difference. First operand has 115 places, 163 transitions, 1388 flow. Second operand 8 states and 207 transitions. [2024-06-27 19:49:42,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 212 transitions, 1982 flow [2024-06-27 19:49:43,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 212 transitions, 1878 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-27 19:49:43,176 INFO L231 Difference]: Finished difference. Result has 117 places, 166 transitions, 1445 flow [2024-06-27 19:49:43,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1284, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1445, PETRI_PLACES=117, PETRI_TRANSITIONS=166} [2024-06-27 19:49:43,177 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 61 predicate places. [2024-06-27 19:49:43,177 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 166 transitions, 1445 flow [2024-06-27 19:49:43,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:43,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:43,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:43,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 19:49:43,177 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:49:43,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:43,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1153498756, now seen corresponding path program 3 times [2024-06-27 19:49:43,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:43,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109338315] [2024-06-27 19:49:43,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:43,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:43,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:44,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:44,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:44,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109338315] [2024-06-27 19:49:44,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109338315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:44,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:44,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:49:44,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749163954] [2024-06-27 19:49:44,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:44,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:49:44,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:44,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:49:44,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:49:44,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-27 19:49:44,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 166 transitions, 1445 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:44,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:44,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-27 19:49:44,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:47,212 INFO L124 PetriNetUnfolderBase]: 13358/19057 cut-off events. [2024-06-27 19:49:47,212 INFO L125 PetriNetUnfolderBase]: For 508434/508480 co-relation queries the response was YES. [2024-06-27 19:49:47,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118993 conditions, 19057 events. 13358/19057 cut-off events. For 508434/508480 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 113005 event pairs, 5059 based on Foata normal form. 88/19052 useless extension candidates. Maximal degree in co-relation 118949. Up to 17523 conditions per place. [2024-06-27 19:49:47,406 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 153 selfloop transitions, 52 changer transitions 0/217 dead transitions. [2024-06-27 19:49:47,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 217 transitions, 2071 flow [2024-06-27 19:49:47,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:49:47,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:49:47,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-06-27 19:49:47,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023584905660378 [2024-06-27 19:49:47,408 INFO L175 Difference]: Start difference. First operand has 117 places, 166 transitions, 1445 flow. Second operand 8 states and 213 transitions. [2024-06-27 19:49:47,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 217 transitions, 2071 flow [2024-06-27 19:49:47,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 217 transitions, 1942 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-27 19:49:47,626 INFO L231 Difference]: Finished difference. Result has 119 places, 169 transitions, 1519 flow [2024-06-27 19:49:47,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1316, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1519, PETRI_PLACES=119, PETRI_TRANSITIONS=169} [2024-06-27 19:49:47,627 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 63 predicate places. [2024-06-27 19:49:47,627 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 169 transitions, 1519 flow [2024-06-27 19:49:47,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:47,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:47,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:47,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 19:49:47,627 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)] === [2024-06-27 19:49:47,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:47,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1153683454, now seen corresponding path program 1 times [2024-06-27 19:49:47,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:47,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193048543] [2024-06-27 19:49:47,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:47,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:47,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:48,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:48,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:48,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193048543] [2024-06-27 19:49:48,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193048543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:48,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:48,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:49:48,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699349265] [2024-06-27 19:49:48,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:48,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:49:48,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:48,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:49:48,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:49:48,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-27 19:49:48,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 169 transitions, 1519 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:48,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:48,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-27 19:49:48,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:51,798 INFO L124 PetriNetUnfolderBase]: 14261/20049 cut-off events. [2024-06-27 19:49:51,799 INFO L125 PetriNetUnfolderBase]: For 572550/572550 co-relation queries the response was YES. [2024-06-27 19:49:51,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127022 conditions, 20049 events. 14261/20049 cut-off events. For 572550/572550 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 114837 event pairs, 5237 based on Foata normal form. 36/19929 useless extension candidates. Maximal degree in co-relation 126977. Up to 18629 conditions per place. [2024-06-27 19:49:51,975 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 170 selfloop transitions, 51 changer transitions 0/229 dead transitions. [2024-06-27 19:49:51,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 229 transitions, 2204 flow [2024-06-27 19:49:51,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:49:51,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:49:51,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-06-27 19:49:51,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48218029350104824 [2024-06-27 19:49:51,977 INFO L175 Difference]: Start difference. First operand has 119 places, 169 transitions, 1519 flow. Second operand 9 states and 230 transitions. [2024-06-27 19:49:51,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 229 transitions, 2204 flow [2024-06-27 19:49:52,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 229 transitions, 2049 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-27 19:49:52,352 INFO L231 Difference]: Finished difference. Result has 122 places, 172 transitions, 1561 flow [2024-06-27 19:49:52,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1366, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1561, PETRI_PLACES=122, PETRI_TRANSITIONS=172} [2024-06-27 19:49:52,353 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 66 predicate places. [2024-06-27 19:49:52,353 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 172 transitions, 1561 flow [2024-06-27 19:49:52,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:52,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:52,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:52,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 19:49:52,353 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:49:52,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:52,354 INFO L85 PathProgramCache]: Analyzing trace with hash 2030604494, now seen corresponding path program 1 times [2024-06-27 19:49:52,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:52,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684440339] [2024-06-27 19:49:52,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:52,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:52,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:53,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:53,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:53,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684440339] [2024-06-27 19:49:53,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684440339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:53,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:53,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:49:53,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994822362] [2024-06-27 19:49:53,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:53,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:49:53,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:53,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:49:53,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:49:53,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-27 19:49:53,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 172 transitions, 1561 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 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) [2024-06-27 19:49:53,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:53,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-27 19:49:53,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:55,775 INFO L124 PetriNetUnfolderBase]: 15053/20993 cut-off events. [2024-06-27 19:49:55,775 INFO L125 PetriNetUnfolderBase]: For 585853/585857 co-relation queries the response was YES. [2024-06-27 19:49:55,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131915 conditions, 20993 events. 15053/20993 cut-off events. For 585853/585857 co-relation queries the response was YES. Maximal size of possible extension queue 653. Compared 117489 event pairs, 5757 based on Foata normal form. 6/20996 useless extension candidates. Maximal degree in co-relation 131869. Up to 20326 conditions per place. [2024-06-27 19:49:55,934 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 179 selfloop transitions, 21 changer transitions 0/206 dead transitions. [2024-06-27 19:49:55,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 206 transitions, 2255 flow [2024-06-27 19:49:55,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:49:55,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:49:55,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-27 19:49:55,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4528301886792453 [2024-06-27 19:49:55,936 INFO L175 Difference]: Start difference. First operand has 122 places, 172 transitions, 1561 flow. Second operand 6 states and 144 transitions. [2024-06-27 19:49:55,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 206 transitions, 2255 flow [2024-06-27 19:49:56,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 206 transitions, 2104 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-27 19:49:56,255 INFO L231 Difference]: Finished difference. Result has 121 places, 180 transitions, 1605 flow [2024-06-27 19:49:56,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1410, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1605, PETRI_PLACES=121, PETRI_TRANSITIONS=180} [2024-06-27 19:49:56,256 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 65 predicate places. [2024-06-27 19:49:56,256 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 180 transitions, 1605 flow [2024-06-27 19:49:56,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 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) [2024-06-27 19:49:56,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:56,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:56,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 19:49:56,257 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)] === [2024-06-27 19:49:56,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:56,257 INFO L85 PathProgramCache]: Analyzing trace with hash -185145636, now seen corresponding path program 2 times [2024-06-27 19:49:56,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:56,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483028004] [2024-06-27 19:49:56,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:56,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:56,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:57,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:57,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:57,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483028004] [2024-06-27 19:49:57,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483028004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:57,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:57,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:49:57,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243169358] [2024-06-27 19:49:57,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:57,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:49:57,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:57,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:49:57,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:49:57,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-27 19:49:57,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 180 transitions, 1605 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:57,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:57,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-27 19:49:57,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:50:00,644 INFO L124 PetriNetUnfolderBase]: 14553/20597 cut-off events. [2024-06-27 19:50:00,644 INFO L125 PetriNetUnfolderBase]: For 650957/650995 co-relation queries the response was YES. [2024-06-27 19:50:00,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136077 conditions, 20597 events. 14553/20597 cut-off events. For 650957/650995 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 119150 event pairs, 4821 based on Foata normal form. 17/20481 useless extension candidates. Maximal degree in co-relation 136030. Up to 18290 conditions per place. [2024-06-27 19:50:00,807 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 133 selfloop transitions, 102 changer transitions 0/245 dead transitions. [2024-06-27 19:50:00,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 245 transitions, 2557 flow [2024-06-27 19:50:00,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:50:00,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:50:00,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 235 transitions. [2024-06-27 19:50:00,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49266247379454925 [2024-06-27 19:50:00,808 INFO L175 Difference]: Start difference. First operand has 121 places, 180 transitions, 1605 flow. Second operand 9 states and 235 transitions. [2024-06-27 19:50:00,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 245 transitions, 2557 flow [2024-06-27 19:50:01,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 245 transitions, 2483 flow, removed 32 selfloop flow, removed 2 redundant places. [2024-06-27 19:50:01,083 INFO L231 Difference]: Finished difference. Result has 128 places, 186 transitions, 1923 flow [2024-06-27 19:50:01,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1531, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1923, PETRI_PLACES=128, PETRI_TRANSITIONS=186} [2024-06-27 19:50:01,083 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 72 predicate places. [2024-06-27 19:50:01,083 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 186 transitions, 1923 flow [2024-06-27 19:50:01,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:01,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:50:01,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:50:01,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 19:50:01,084 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:50:01,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:50:01,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1036158630, now seen corresponding path program 3 times [2024-06-27 19:50:01,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:50:01,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247713829] [2024-06-27 19:50:01,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:50:01,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:50:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:50:02,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:50:02,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:50:02,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247713829] [2024-06-27 19:50:02,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247713829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:50:02,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:50:02,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:50:02,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046383566] [2024-06-27 19:50:02,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:50:02,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:50:02,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:50:02,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:50:02,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:50:02,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-27 19:50:02,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 186 transitions, 1923 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:02,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:50:02,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-27 19:50:02,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand