./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix021.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix021.opt.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/mix021.opt.i ./goblint.2024-06-19_11-23-25.files/protection/mix021.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 18:22:48,094 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:22:48,165 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:22:48,170 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:22:48,171 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:22:48,193 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:22:48,194 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:22:48,194 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:22:48,194 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:22:48,198 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:22:48,198 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:22:48,198 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:22:48,199 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:22:48,200 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:22:48,200 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:22:48,200 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:22:48,201 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:22:48,201 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:22:48,201 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:22:48,201 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:22:48,201 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:22:48,202 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:22:48,202 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:22:48,202 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:22:48,202 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:22:48,207 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:22:48,208 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:22:48,208 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:22:48,208 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:22:48,208 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:22:48,209 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:22:48,209 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:22:48,210 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:22:48,210 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:22:48,210 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:22:48,210 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:22:48,210 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:22:48,210 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:22:48,210 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:22:48,211 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:22:48,211 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:22:48,211 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:22:48,211 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:22:48,211 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:22:48,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:22:48,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:22:48,441 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:22:48,442 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:22:48,442 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:22:48,443 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix021.opt.yml/witness.yml [2024-06-27 18:22:48,627 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:22:48,627 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:22:48,628 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix021.opt.i [2024-06-27 18:22:49,663 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:22:49,884 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:22:49,887 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix021.opt.i [2024-06-27 18:22:49,907 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae0150866/aeea000c793b46c1a616dfe9ee4a0cd3/FLAG8e73e911c [2024-06-27 18:22:49,920 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae0150866/aeea000c793b46c1a616dfe9ee4a0cd3 [2024-06-27 18:22:49,921 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:22:49,922 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:22:49,924 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:22:49,924 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:22:49,928 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:22:49,929 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:22:48" (1/2) ... [2024-06-27 18:22:49,929 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a7ea2fe and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:22:49, skipping insertion in model container [2024-06-27 18:22:49,929 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:22:48" (1/2) ... [2024-06-27 18:22:49,931 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2a430202 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:22:49, skipping insertion in model container [2024-06-27 18:22:49,931 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:22:49" (2/2) ... [2024-06-27 18:22:49,931 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a7ea2fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:22:49, skipping insertion in model container [2024-06-27 18:22:49,931 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:22:49" (2/2) ... [2024-06-27 18:22:49,932 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:22:50,017 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:22:50,018 INFO L97 edCorrectnessWitness]: Location invariant before [L867-L867] (((((((((((((((((((((! multithreaded || z$r_buff1_thd3 == (_Bool)0) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) [2024-06-27 18:22:50,018 INFO L97 edCorrectnessWitness]: Location invariant before [L869-L869] (((((((((((((((((((((! multithreaded || z$r_buff1_thd3 == (_Bool)0) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) [2024-06-27 18:22:50,018 INFO L97 edCorrectnessWitness]: Location invariant before [L865-L865] (((((((((((((((((((((! multithreaded || z$r_buff1_thd3 == (_Bool)0) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) [2024-06-27 18:22:50,019 INFO L97 edCorrectnessWitness]: Location invariant before [L870-L870] (((((((((((((((((((((! multithreaded || z$r_buff1_thd3 == (_Bool)0) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) [2024-06-27 18:22:50,019 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:22:50,019 INFO L106 edCorrectnessWitness]: ghost_update [L863-L863] multithreaded = 1; [2024-06-27 18:22:50,049 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:22:50,164 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix021.opt.i[944,957] [2024-06-27 18:22:50,285 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:22:50,292 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:22:50,323 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix021.opt.i[944,957] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:22:50,417 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:22:50,444 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:22:50,444 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:22:50 WrapperNode [2024-06-27 18:22:50,445 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:22:50,445 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:22:50,445 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:22:50,446 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:22:50,451 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:22:50" (1/1) ... [2024-06-27 18:22:50,466 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:22:50" (1/1) ... [2024-06-27 18:22:50,495 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 156 [2024-06-27 18:22:50,496 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:22:50,496 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:22:50,496 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:22:50,496 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:22:50,509 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:22:50" (1/1) ... [2024-06-27 18:22:50,509 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:22:50" (1/1) ... [2024-06-27 18:22:50,512 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:22:50" (1/1) ... [2024-06-27 18:22:50,525 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 18:22:50,525 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:22:50" (1/1) ... [2024-06-27 18:22:50,525 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:22:50" (1/1) ... [2024-06-27 18:22:50,533 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:22:50" (1/1) ... [2024-06-27 18:22:50,546 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:22:50" (1/1) ... [2024-06-27 18:22:50,552 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:22:50" (1/1) ... [2024-06-27 18:22:50,554 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:22:50" (1/1) ... [2024-06-27 18:22:50,560 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:22:50,560 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:22:50,560 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:22:50,560 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:22:50,561 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:22:50" (1/1) ... [2024-06-27 18:22:50,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:22:50,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:22:50,588 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 18:22:50,594 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 18:22:50,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:22:50,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:22:50,618 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:22:50,618 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:22:50,618 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:22:50,618 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:22:50,618 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:22:50,618 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:22:50,619 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-27 18:22:50,619 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-27 18:22:50,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:22:50,619 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:22:50,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:22:50,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:22:50,621 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 18:22:50,755 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:22:50,757 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:22:51,179 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:22:51,179 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:22:51,327 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:22:51,327 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:22:51,327 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:22:51 BoogieIcfgContainer [2024-06-27 18:22:51,327 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:22:51,330 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:22:51,330 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:22:51,332 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:22:51,332 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:22:48" (1/4) ... [2024-06-27 18:22:51,333 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d29e9c0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:22:51, skipping insertion in model container [2024-06-27 18:22:51,333 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:22:49" (2/4) ... [2024-06-27 18:22:51,334 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d29e9c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:22:51, skipping insertion in model container [2024-06-27 18:22:51,334 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:22:50" (3/4) ... [2024-06-27 18:22:51,334 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d29e9c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:22:51, skipping insertion in model container [2024-06-27 18:22:51,334 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:22:51" (4/4) ... [2024-06-27 18:22:51,335 INFO L112 eAbstractionObserver]: Analyzing ICFG mix021.opt.i [2024-06-27 18:22:51,349 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:22:51,349 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-06-27 18:22:51,349 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:22:51,397 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:22:51,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 58 transitions, 132 flow [2024-06-27 18:22:51,457 INFO L124 PetriNetUnfolderBase]: 1/54 cut-off events. [2024-06-27 18:22:51,457 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:22:51,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 54 events. 1/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 96 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2024-06-27 18:22:51,460 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 58 transitions, 132 flow [2024-06-27 18:22:51,464 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 54 transitions, 120 flow [2024-06-27 18:22:51,473 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:22:51,479 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;@7497f2b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:22:51,479 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-06-27 18:22:51,482 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:22:51,482 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:22:51,482 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:22:51,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:51,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:22:51,483 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:22:51,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:51,487 INFO L85 PathProgramCache]: Analyzing trace with hash 392038411, now seen corresponding path program 1 times [2024-06-27 18:22:51,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:51,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90549882] [2024-06-27 18:22:51,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:51,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:51,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:52,293 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 18:22:52,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:52,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90549882] [2024-06-27 18:22:52,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90549882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:52,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:52,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:22:52,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132103813] [2024-06-27 18:22:52,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:52,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:22:52,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:52,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:22:52,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:22:52,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-06-27 18:22:52,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:52,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:52,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-06-27 18:22:52,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:54,927 INFO L124 PetriNetUnfolderBase]: 20441/28049 cut-off events. [2024-06-27 18:22:54,928 INFO L125 PetriNetUnfolderBase]: For 153/153 co-relation queries the response was YES. [2024-06-27 18:22:54,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55550 conditions, 28049 events. 20441/28049 cut-off events. For 153/153 co-relation queries the response was YES. Maximal size of possible extension queue 1026. Compared 171674 event pairs, 13989 based on Foata normal form. 876/27571 useless extension candidates. Maximal degree in co-relation 55537. Up to 27168 conditions per place. [2024-06-27 18:22:55,133 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 51 selfloop transitions, 6 changer transitions 0/72 dead transitions. [2024-06-27 18:22:55,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 72 transitions, 279 flow [2024-06-27 18:22:55,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:22:55,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:22:55,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2024-06-27 18:22:55,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6896551724137931 [2024-06-27 18:22:55,147 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 120 flow. Second operand 3 states and 120 transitions. [2024-06-27 18:22:55,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 72 transitions, 279 flow [2024-06-27 18:22:55,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 72 transitions, 272 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 18:22:55,153 INFO L231 Difference]: Finished difference. Result has 65 places, 58 transitions, 160 flow [2024-06-27 18:22:55,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=65, PETRI_TRANSITIONS=58} [2024-06-27 18:22:55,158 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -1 predicate places. [2024-06-27 18:22:55,159 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 58 transitions, 160 flow [2024-06-27 18:22:55,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:55,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:55,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:55,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:22:55,160 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:22:55,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:55,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1207074466, now seen corresponding path program 1 times [2024-06-27 18:22:55,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:55,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588444505] [2024-06-27 18:22:55,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:55,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:55,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:55,729 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 18:22:55,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:55,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588444505] [2024-06-27 18:22:55,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588444505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:55,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:55,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:22:55,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819882669] [2024-06-27 18:22:55,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:55,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:22:55,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:55,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:22:55,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:22:55,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 58 [2024-06-27 18:22:55,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 58 transitions, 160 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 18:22:55,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:55,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 58 [2024-06-27 18:22:55,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:58,465 INFO L124 PetriNetUnfolderBase]: 23280/34556 cut-off events. [2024-06-27 18:22:58,466 INFO L125 PetriNetUnfolderBase]: For 5350/5350 co-relation queries the response was YES. [2024-06-27 18:22:58,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73237 conditions, 34556 events. 23280/34556 cut-off events. For 5350/5350 co-relation queries the response was YES. Maximal size of possible extension queue 1306. Compared 244900 event pairs, 18099 based on Foata normal form. 4/32631 useless extension candidates. Maximal degree in co-relation 73225. Up to 30849 conditions per place. [2024-06-27 18:22:58,664 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 66 selfloop transitions, 11 changer transitions 0/91 dead transitions. [2024-06-27 18:22:58,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 91 transitions, 400 flow [2024-06-27 18:22:58,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:22:58,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:22:58,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 153 transitions. [2024-06-27 18:22:58,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6594827586206896 [2024-06-27 18:22:58,667 INFO L175 Difference]: Start difference. First operand has 65 places, 58 transitions, 160 flow. Second operand 4 states and 153 transitions. [2024-06-27 18:22:58,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 91 transitions, 400 flow [2024-06-27 18:22:58,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 91 transitions, 394 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:22:58,669 INFO L231 Difference]: Finished difference. Result has 68 places, 63 transitions, 218 flow [2024-06-27 18:22:58,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=218, PETRI_PLACES=68, PETRI_TRANSITIONS=63} [2024-06-27 18:22:58,670 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 2 predicate places. [2024-06-27 18:22:58,670 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 63 transitions, 218 flow [2024-06-27 18:22:58,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 18:22:58,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:58,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:58,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:22:58,671 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:22:58,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:58,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1235398500, now seen corresponding path program 1 times [2024-06-27 18:22:58,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:58,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881152775] [2024-06-27 18:22:58,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:58,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:58,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:59,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:59,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:59,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881152775] [2024-06-27 18:22:59,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881152775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:59,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:59,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:22:59,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769136620] [2024-06-27 18:22:59,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:59,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:22:59,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:59,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:22:59,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:22:59,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 58 [2024-06-27 18:22:59,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 63 transitions, 218 flow. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 18:22:59,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:59,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 58 [2024-06-27 18:22:59,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:01,855 INFO L124 PetriNetUnfolderBase]: 23320/33667 cut-off events. [2024-06-27 18:23:01,856 INFO L125 PetriNetUnfolderBase]: For 14086/14086 co-relation queries the response was YES. [2024-06-27 18:23:01,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79871 conditions, 33667 events. 23320/33667 cut-off events. For 14086/14086 co-relation queries the response was YES. Maximal size of possible extension queue 1204. Compared 226066 event pairs, 12647 based on Foata normal form. 7/31971 useless extension candidates. Maximal degree in co-relation 79857. Up to 30752 conditions per place. [2024-06-27 18:23:02,049 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 88 selfloop transitions, 26 changer transitions 0/128 dead transitions. [2024-06-27 18:23:02,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 128 transitions, 662 flow [2024-06-27 18:23:02,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:23:02,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:23:02,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 200 transitions. [2024-06-27 18:23:02,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6896551724137931 [2024-06-27 18:23:02,051 INFO L175 Difference]: Start difference. First operand has 68 places, 63 transitions, 218 flow. Second operand 5 states and 200 transitions. [2024-06-27 18:23:02,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 128 transitions, 662 flow [2024-06-27 18:23:02,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 128 transitions, 638 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 18:23:02,057 INFO L231 Difference]: Finished difference. Result has 73 places, 80 transitions, 379 flow [2024-06-27 18:23:02,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=379, PETRI_PLACES=73, PETRI_TRANSITIONS=80} [2024-06-27 18:23:02,058 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 7 predicate places. [2024-06-27 18:23:02,058 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 80 transitions, 379 flow [2024-06-27 18:23:02,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 18:23:02,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:02,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:02,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:23:02,059 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:23:02,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:02,059 INFO L85 PathProgramCache]: Analyzing trace with hash -765434217, now seen corresponding path program 1 times [2024-06-27 18:23:02,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:02,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853659957] [2024-06-27 18:23:02,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:02,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:02,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:02,757 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 18:23:02,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:02,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853659957] [2024-06-27 18:23:02,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853659957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:02,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:02,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:23:02,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717255199] [2024-06-27 18:23:02,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:02,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:23:02,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:02,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:23:02,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:23:02,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 58 [2024-06-27 18:23:02,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 80 transitions, 379 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 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 18:23:02,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:02,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 58 [2024-06-27 18:23:02,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:06,031 INFO L124 PetriNetUnfolderBase]: 23389/34777 cut-off events. [2024-06-27 18:23:06,032 INFO L125 PetriNetUnfolderBase]: For 36588/36593 co-relation queries the response was YES. [2024-06-27 18:23:06,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93426 conditions, 34777 events. 23389/34777 cut-off events. For 36588/36593 co-relation queries the response was YES. Maximal size of possible extension queue 1307. Compared 246379 event pairs, 12717 based on Foata normal form. 18/32884 useless extension candidates. Maximal degree in co-relation 93409. Up to 30733 conditions per place. [2024-06-27 18:23:06,290 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 99 selfloop transitions, 31 changer transitions 0/144 dead transitions. [2024-06-27 18:23:06,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 144 transitions, 845 flow [2024-06-27 18:23:06,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:23:06,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:23:06,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 234 transitions. [2024-06-27 18:23:06,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6724137931034483 [2024-06-27 18:23:06,294 INFO L175 Difference]: Start difference. First operand has 73 places, 80 transitions, 379 flow. Second operand 6 states and 234 transitions. [2024-06-27 18:23:06,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 144 transitions, 845 flow [2024-06-27 18:23:06,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 144 transitions, 829 flow, removed 8 selfloop flow, removed 0 redundant places. [2024-06-27 18:23:06,309 INFO L231 Difference]: Finished difference. Result has 78 places, 84 transitions, 475 flow [2024-06-27 18:23:06,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=475, PETRI_PLACES=78, PETRI_TRANSITIONS=84} [2024-06-27 18:23:06,311 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 12 predicate places. [2024-06-27 18:23:06,311 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 84 transitions, 475 flow [2024-06-27 18:23:06,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 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 18:23:06,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:06,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:06,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:23:06,312 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:23:06,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:06,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1485657796, now seen corresponding path program 1 times [2024-06-27 18:23:06,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:06,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598910011] [2024-06-27 18:23:06,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:06,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:06,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:07,034 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 18:23:07,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:07,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598910011] [2024-06-27 18:23:07,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598910011] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:07,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:07,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:23:07,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396649703] [2024-06-27 18:23:07,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:07,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:23:07,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:07,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:23:07,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:23:07,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 58 [2024-06-27 18:23:07,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 84 transitions, 475 flow. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 18:23:07,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:07,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 58 [2024-06-27 18:23:07,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:10,000 INFO L124 PetriNetUnfolderBase]: 23393/32176 cut-off events. [2024-06-27 18:23:10,001 INFO L125 PetriNetUnfolderBase]: For 47877/47877 co-relation queries the response was YES. [2024-06-27 18:23:10,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98975 conditions, 32176 events. 23393/32176 cut-off events. For 47877/47877 co-relation queries the response was YES. Maximal size of possible extension queue 1110. Compared 198018 event pairs, 10280 based on Foata normal form. 3/30872 useless extension candidates. Maximal degree in co-relation 98954. Up to 30998 conditions per place. [2024-06-27 18:23:10,243 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 86 selfloop transitions, 12 changer transitions 0/111 dead transitions. [2024-06-27 18:23:10,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 111 transitions, 735 flow [2024-06-27 18:23:10,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:23:10,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:23:10,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 164 transitions. [2024-06-27 18:23:10,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5655172413793104 [2024-06-27 18:23:10,245 INFO L175 Difference]: Start difference. First operand has 78 places, 84 transitions, 475 flow. Second operand 5 states and 164 transitions. [2024-06-27 18:23:10,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 111 transitions, 735 flow [2024-06-27 18:23:10,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 111 transitions, 647 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-27 18:23:10,266 INFO L231 Difference]: Finished difference. Result has 79 places, 84 transitions, 423 flow [2024-06-27 18:23:10,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=423, PETRI_PLACES=79, PETRI_TRANSITIONS=84} [2024-06-27 18:23:10,267 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 13 predicate places. [2024-06-27 18:23:10,267 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 84 transitions, 423 flow [2024-06-27 18:23:10,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 18:23:10,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:10,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:10,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:23:10,268 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:23:10,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:10,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1180917878, now seen corresponding path program 1 times [2024-06-27 18:23:10,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:10,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050940950] [2024-06-27 18:23:10,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:10,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:10,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:11,022 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 18:23:11,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:11,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050940950] [2024-06-27 18:23:11,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050940950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:11,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:11,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:23:11,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857153079] [2024-06-27 18:23:11,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:11,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:23:11,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:11,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:23:11,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:23:11,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 58 [2024-06-27 18:23:11,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 84 transitions, 423 flow. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 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 18:23:11,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:11,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 58 [2024-06-27 18:23:11,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:14,375 INFO L124 PetriNetUnfolderBase]: 23481/32551 cut-off events. [2024-06-27 18:23:14,376 INFO L125 PetriNetUnfolderBase]: For 50610/50610 co-relation queries the response was YES. [2024-06-27 18:23:14,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99825 conditions, 32551 events. 23481/32551 cut-off events. For 50610/50610 co-relation queries the response was YES. Maximal size of possible extension queue 1134. Compared 201540 event pairs, 9791 based on Foata normal form. 7/31490 useless extension candidates. Maximal degree in co-relation 99802. Up to 30872 conditions per place. [2024-06-27 18:23:14,578 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 107 selfloop transitions, 27 changer transitions 0/147 dead transitions. [2024-06-27 18:23:14,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 147 transitions, 951 flow [2024-06-27 18:23:14,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:23:14,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:23:14,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 209 transitions. [2024-06-27 18:23:14,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6005747126436781 [2024-06-27 18:23:14,579 INFO L175 Difference]: Start difference. First operand has 79 places, 84 transitions, 423 flow. Second operand 6 states and 209 transitions. [2024-06-27 18:23:14,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 147 transitions, 951 flow [2024-06-27 18:23:14,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 147 transitions, 915 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 18:23:14,601 INFO L231 Difference]: Finished difference. Result has 83 places, 101 transitions, 608 flow [2024-06-27 18:23:14,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=608, PETRI_PLACES=83, PETRI_TRANSITIONS=101} [2024-06-27 18:23:14,602 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 17 predicate places. [2024-06-27 18:23:14,602 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 101 transitions, 608 flow [2024-06-27 18:23:14,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 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 18:23:14,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:14,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:14,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:23:14,603 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:23:14,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:14,603 INFO L85 PathProgramCache]: Analyzing trace with hash -2051972103, now seen corresponding path program 1 times [2024-06-27 18:23:14,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:14,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280201492] [2024-06-27 18:23:14,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:14,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:14,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:15,352 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 18:23:15,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:15,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280201492] [2024-06-27 18:23:15,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280201492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:15,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:15,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:23:15,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232521300] [2024-06-27 18:23:15,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:15,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:23:15,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:15,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:23:15,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:23:15,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-06-27 18:23:15,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 101 transitions, 608 flow. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states 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 18:23:15,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:15,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-06-27 18:23:15,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:18,940 INFO L124 PetriNetUnfolderBase]: 26795/35880 cut-off events. [2024-06-27 18:23:18,940 INFO L125 PetriNetUnfolderBase]: For 90397/90407 co-relation queries the response was YES. [2024-06-27 18:23:19,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124788 conditions, 35880 events. 26795/35880 cut-off events. For 90397/90407 co-relation queries the response was YES. Maximal size of possible extension queue 1195. Compared 210422 event pairs, 11384 based on Foata normal form. 14/34841 useless extension candidates. Maximal degree in co-relation 124763. Up to 35250 conditions per place. [2024-06-27 18:23:19,391 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 108 selfloop transitions, 31 changer transitions 0/151 dead transitions. [2024-06-27 18:23:19,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 151 transitions, 1068 flow [2024-06-27 18:23:19,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:23:19,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:23:19,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 203 transitions. [2024-06-27 18:23:19,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-27 18:23:19,393 INFO L175 Difference]: Start difference. First operand has 83 places, 101 transitions, 608 flow. Second operand 6 states and 203 transitions. [2024-06-27 18:23:19,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 151 transitions, 1068 flow [2024-06-27 18:23:19,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 151 transitions, 1036 flow, removed 15 selfloop flow, removed 1 redundant places. [2024-06-27 18:23:19,461 INFO L231 Difference]: Finished difference. Result has 88 places, 106 transitions, 694 flow [2024-06-27 18:23:19,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=694, PETRI_PLACES=88, PETRI_TRANSITIONS=106} [2024-06-27 18:23:19,462 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 22 predicate places. [2024-06-27 18:23:19,462 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 106 transitions, 694 flow [2024-06-27 18:23:19,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states 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 18:23:19,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:19,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:19,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:23:19,463 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:23:19,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:19,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1787970213, now seen corresponding path program 2 times [2024-06-27 18:23:19,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:19,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736218412] [2024-06-27 18:23:19,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:19,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:19,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:20,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:23:20,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:20,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736218412] [2024-06-27 18:23:20,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736218412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:20,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:20,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:23:20,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387968791] [2024-06-27 18:23:20,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:20,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:23:20,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:20,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:23:20,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:23:20,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-06-27 18:23:20,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 106 transitions, 694 flow. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states 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 18:23:20,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:20,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-06-27 18:23:20,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:24,050 INFO L124 PetriNetUnfolderBase]: 26767/35828 cut-off events. [2024-06-27 18:23:24,050 INFO L125 PetriNetUnfolderBase]: For 93960/93960 co-relation queries the response was YES. [2024-06-27 18:23:24,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124318 conditions, 35828 events. 26767/35828 cut-off events. For 93960/93960 co-relation queries the response was YES. Maximal size of possible extension queue 1195. Compared 209940 event pairs, 11414 based on Foata normal form. 3/34775 useless extension candidates. Maximal degree in co-relation 124290. Up to 35216 conditions per place. [2024-06-27 18:23:24,327 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 101 selfloop transitions, 32 changer transitions 0/145 dead transitions. [2024-06-27 18:23:24,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 145 transitions, 1052 flow [2024-06-27 18:23:24,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:23:24,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:23:24,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 198 transitions. [2024-06-27 18:23:24,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5689655172413793 [2024-06-27 18:23:24,329 INFO L175 Difference]: Start difference. First operand has 88 places, 106 transitions, 694 flow. Second operand 6 states and 198 transitions. [2024-06-27 18:23:24,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 145 transitions, 1052 flow [2024-06-27 18:23:24,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 145 transitions, 995 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-27 18:23:24,396 INFO L231 Difference]: Finished difference. Result has 91 places, 106 transitions, 713 flow [2024-06-27 18:23:24,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=713, PETRI_PLACES=91, PETRI_TRANSITIONS=106} [2024-06-27 18:23:24,397 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 25 predicate places. [2024-06-27 18:23:24,397 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 106 transitions, 713 flow [2024-06-27 18:23:24,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states 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 18:23:24,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:24,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:24,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:23:24,398 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:23:24,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:24,399 INFO L85 PathProgramCache]: Analyzing trace with hash 597189303, now seen corresponding path program 1 times [2024-06-27 18:23:24,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:24,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279032382] [2024-06-27 18:23:24,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:24,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:24,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:25,066 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 18:23:25,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:25,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279032382] [2024-06-27 18:23:25,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279032382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:25,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:25,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:23:25,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759842835] [2024-06-27 18:23:25,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:25,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:23:25,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:25,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:23:25,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:23:25,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-06-27 18:23:25,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 106 transitions, 713 flow. Second operand has 8 states, 8 states have (on average 17.375) internal successors, (139), 8 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:25,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:25,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-06-27 18:23:25,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand