./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi005.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/mutex-meet-nonrel/rfi005.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/rfi005.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi005.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 [2024-06-28 03:39:58,376 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:39:58,433 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:39:58,436 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:39:58,436 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:39:58,458 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:39:58,458 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:39:58,459 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:39:58,459 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:39:58,463 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:39:58,464 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:39:58,464 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:39:58,465 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:39:58,466 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:39:58,466 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:39:58,466 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:39:58,474 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:39:58,474 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:39:58,474 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:39:58,474 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:39:58,474 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:39:58,475 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:39:58,475 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:39:58,475 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:39:58,475 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:39:58,476 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:39:58,476 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:39:58,476 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:39:58,477 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:39:58,477 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:39:58,477 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:39:58,478 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:39:58,478 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:39:58,478 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:39:58,478 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:39:58,478 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:39:58,478 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:39:58,479 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:39:58,479 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:39:58,479 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:39:58,479 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:39:58,480 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:39:58,480 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:39:58,480 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:39:58,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:39:58,704 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:39:58,706 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:39:58,707 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:39:58,707 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:39:58,708 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi005.i [2024-06-28 03:39:59,747 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:39:59,979 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:39:59,979 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi005.i [2024-06-28 03:40:00,001 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b4cc78bc/130b4c55ea394639a4c16a4eacef35c0/FLAG0949920df [2024-06-28 03:40:00,011 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b4cc78bc/130b4c55ea394639a4c16a4eacef35c0 [2024-06-28 03:40:00,013 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:40:00,014 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:40:00,014 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi005.yml/witness.yml [2024-06-28 03:40:00,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:40:00,121 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:40:00,122 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:40:00,122 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:40:00,126 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:40:00,127 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:40:00" (1/2) ... [2024-06-28 03:40:00,127 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a9ef9e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:40:00, skipping insertion in model container [2024-06-28 03:40:00,127 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:40:00" (1/2) ... [2024-06-28 03:40:00,128 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2aa2021f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:40:00, skipping insertion in model container [2024-06-28 03:40:00,129 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:40:00" (2/2) ... [2024-06-28 03:40:00,129 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a9ef9e5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:40:00, skipping insertion in model container [2024-06-28 03:40:00,129 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:40:00" (2/2) ... [2024-06-28 03:40:00,129 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:40:00,183 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:40:00,184 INFO L97 edCorrectnessWitness]: Location invariant before [L838-L838] (((((((((((((((! multithreaded || y$read_delayed_var == 0) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)) && ((y$w_buff0 == 0 || y$w_buff0 == 1) || y$w_buff0 == 2)) && ((y$w_buff1 == 0 || y$w_buff1 == 1) || y$w_buff1 == 2)))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((y$w_buff1 == 0 || y$w_buff1 == 1) || y$w_buff1 == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((y$w_buff0 == 0 || y$w_buff0 == 1) || y$w_buff0 == 2)) [2024-06-28 03:40:00,185 INFO L97 edCorrectnessWitness]: Location invariant before [L837-L837] (((((((((((((((! multithreaded || y$read_delayed_var == 0) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)) && ((y$w_buff0 == 0 || y$w_buff0 == 1) || y$w_buff0 == 2)) && ((y$w_buff1 == 0 || y$w_buff1 == 1) || y$w_buff1 == 2)))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((y$w_buff1 == 0 || y$w_buff1 == 1) || y$w_buff1 == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((y$w_buff0 == 0 || y$w_buff0 == 1) || y$w_buff0 == 2)) [2024-06-28 03:40:00,185 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:40:00,185 INFO L106 edCorrectnessWitness]: ghost_update [L835-L835] multithreaded = 1; [2024-06-28 03:40:00,222 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:40:00,545 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:40:00,559 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:40:00,661 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:40:00,698 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:40:00,699 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:40:00 WrapperNode [2024-06-28 03:40:00,699 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:40:00,700 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:40:00,700 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:40:00,701 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:40:00,706 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 28.06 03:40:00" (1/1) ... [2024-06-28 03:40:00,737 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 28.06 03:40:00" (1/1) ... [2024-06-28 03:40:00,773 INFO L138 Inliner]: procedures = 174, calls = 41, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 174 [2024-06-28 03:40:00,774 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:40:00,774 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:40:00,774 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:40:00,775 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:40:00,783 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:40:00" (1/1) ... [2024-06-28 03:40:00,784 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:40:00" (1/1) ... [2024-06-28 03:40:00,797 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:40:00" (1/1) ... [2024-06-28 03:40:00,833 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]. [2024-06-28 03:40:00,833 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:40:00" (1/1) ... [2024-06-28 03:40:00,833 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:40:00" (1/1) ... [2024-06-28 03:40:00,840 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:40:00" (1/1) ... [2024-06-28 03:40:00,841 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:40:00" (1/1) ... [2024-06-28 03:40:00,843 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:40:00" (1/1) ... [2024-06-28 03:40:00,861 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:40:00" (1/1) ... [2024-06-28 03:40:00,864 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:40:00,865 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:40:00,865 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:40:00,865 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:40:00,866 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:40:00" (1/1) ... [2024-06-28 03:40:00,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:40:00,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:40:00,888 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) [2024-06-28 03:40:00,908 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 [2024-06-28 03:40:00,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:40:00,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:40:00,931 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:40:00,931 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:40:00,931 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:40:00,932 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:40:00,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:40:00,932 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:40:00,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:40:00,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:40:00,933 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 03:40:01,029 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:40:01,031 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:40:01,289 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:40:01,289 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:40:01,438 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:40:01,439 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:40:01,441 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:40:01 BoogieIcfgContainer [2024-06-28 03:40:01,441 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:40:01,443 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:40:01,444 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:40:01,446 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:40:01,447 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:40:00" (1/4) ... [2024-06-28 03:40:01,448 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d41d6a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:40:01, skipping insertion in model container [2024-06-28 03:40:01,448 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:40:00" (2/4) ... [2024-06-28 03:40:01,451 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d41d6a0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:40:01, skipping insertion in model container [2024-06-28 03:40:01,452 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:40:00" (3/4) ... [2024-06-28 03:40:01,452 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d41d6a0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:40:01, skipping insertion in model container [2024-06-28 03:40:01,452 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:40:01" (4/4) ... [2024-06-28 03:40:01,453 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi005.i [2024-06-28 03:40:01,466 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:40:01,467 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-28 03:40:01,467 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:40:01,540 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:40:01,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-28 03:40:01,616 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-28 03:40:01,617 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:40:01,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 0/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 03:40:01,620 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-28 03:40:01,622 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-28 03:40:01,630 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:40:01,634 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;@d5bdff8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:40:01,635 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-28 03:40:01,637 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:40:01,637 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 03:40:01,638 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:40:01,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:01,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:40:01,639 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:01,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:01,643 INFO L85 PathProgramCache]: Analyzing trace with hash 443535461, now seen corresponding path program 1 times [2024-06-28 03:40:01,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:01,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611604020] [2024-06-28 03:40:01,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:01,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:01,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:02,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:02,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:02,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611604020] [2024-06-28 03:40:02,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611604020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:02,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:02,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:40:02,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899391201] [2024-06-28 03:40:02,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:02,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:40:02,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:02,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:40:02,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:40:02,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-06-28 03:40:02,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:02,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:02,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-06-28 03:40:02,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:02,511 INFO L124 PetriNetUnfolderBase]: 153/305 cut-off events. [2024-06-28 03:40:02,512 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-28 03:40:02,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 598 conditions, 305 events. 153/305 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1213 event pairs, 89 based on Foata normal form. 1/300 useless extension candidates. Maximal degree in co-relation 587. Up to 272 conditions per place. [2024-06-28 03:40:02,518 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 21 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-28 03:40:02,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 117 flow [2024-06-28 03:40:02,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:40:02,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:40:02,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2024-06-28 03:40:02,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-28 03:40:02,529 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 56 transitions. [2024-06-28 03:40:02,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 117 flow [2024-06-28 03:40:02,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 03:40:02,533 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-28 03:40:02,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-06-28 03:40:02,538 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-28 03:40:02,538 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-28 03:40:02,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:02,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:02,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:02,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:40:02,540 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:02,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:02,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1036109458, now seen corresponding path program 1 times [2024-06-28 03:40:02,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:02,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969594968] [2024-06-28 03:40:02,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:02,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:02,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:03,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:03,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:03,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969594968] [2024-06-28 03:40:03,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969594968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:03,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:03,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:40:03,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249230805] [2024-06-28 03:40:03,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:03,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:40:03,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:03,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:40:03,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:40:03,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 03:40:03,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:03,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:03,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 03:40:03,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:03,197 INFO L124 PetriNetUnfolderBase]: 169/317 cut-off events. [2024-06-28 03:40:03,198 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2024-06-28 03:40:03,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 722 conditions, 317 events. 169/317 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1207 event pairs, 70 based on Foata normal form. 4/320 useless extension candidates. Maximal degree in co-relation 710. Up to 281 conditions per place. [2024-06-28 03:40:03,203 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 27 selfloop transitions, 5 changer transitions 0/37 dead transitions. [2024-06-28 03:40:03,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 165 flow [2024-06-28 03:40:03,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:40:03,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:40:03,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 70 transitions. [2024-06-28 03:40:03,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-06-28 03:40:03,206 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 70 transitions. [2024-06-28 03:40:03,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 165 flow [2024-06-28 03:40:03,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 37 transitions, 162 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:40:03,210 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-28 03:40:03,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-06-28 03:40:03,211 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-28 03:40:03,212 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-28 03:40:03,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:03,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:03,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:03,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:40:03,213 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:03,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:03,216 INFO L85 PathProgramCache]: Analyzing trace with hash -891196402, now seen corresponding path program 1 times [2024-06-28 03:40:03,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:03,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391335594] [2024-06-28 03:40:03,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:03,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:03,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:03,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:03,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:03,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391335594] [2024-06-28 03:40:03,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391335594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:03,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:03,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:40:03,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896307650] [2024-06-28 03:40:03,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:03,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:40:03,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:03,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:40:03,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:40:03,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:03,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 flow. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:03,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:03,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:03,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:03,931 INFO L124 PetriNetUnfolderBase]: 145/283 cut-off events. [2024-06-28 03:40:03,932 INFO L125 PetriNetUnfolderBase]: For 161/161 co-relation queries the response was YES. [2024-06-28 03:40:03,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 716 conditions, 283 events. 145/283 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1102 event pairs, 76 based on Foata normal form. 1/280 useless extension candidates. Maximal degree in co-relation 701. Up to 256 conditions per place. [2024-06-28 03:40:03,933 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 24 selfloop transitions, 6 changer transitions 0/35 dead transitions. [2024-06-28 03:40:03,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 35 transitions, 175 flow [2024-06-28 03:40:03,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:40:03,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:40:03,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 69 transitions. [2024-06-28 03:40:03,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-06-28 03:40:03,937 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 69 transitions. [2024-06-28 03:40:03,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 35 transitions, 175 flow [2024-06-28 03:40:03,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 35 transitions, 166 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 03:40:03,939 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 115 flow [2024-06-28 03:40:03,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=115, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-06-28 03:40:03,940 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-06-28 03:40:03,940 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 115 flow [2024-06-28 03:40:03,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:03,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:03,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:03,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:40:03,941 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:03,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:03,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1699092926, now seen corresponding path program 1 times [2024-06-28 03:40:03,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:03,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743040697] [2024-06-28 03:40:03,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:03,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:03,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:04,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:04,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:04,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743040697] [2024-06-28 03:40:04,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743040697] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:04,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:04,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:40:04,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356179052] [2024-06-28 03:40:04,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:04,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:40:04,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:04,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:40:04,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:40:04,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 03:40:04,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 115 flow. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 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) [2024-06-28 03:40:04,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:04,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 03:40:04,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:05,000 INFO L124 PetriNetUnfolderBase]: 163/306 cut-off events. [2024-06-28 03:40:05,000 INFO L125 PetriNetUnfolderBase]: For 303/303 co-relation queries the response was YES. [2024-06-28 03:40:05,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 837 conditions, 306 events. 163/306 cut-off events. For 303/303 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1164 event pairs, 29 based on Foata normal form. 4/309 useless extension candidates. Maximal degree in co-relation 821. Up to 252 conditions per place. [2024-06-28 03:40:05,002 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 32 selfloop transitions, 8 changer transitions 0/45 dead transitions. [2024-06-28 03:40:05,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 45 transitions, 229 flow [2024-06-28 03:40:05,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:40:05,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:40:05,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 94 transitions. [2024-06-28 03:40:05,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-06-28 03:40:05,003 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 115 flow. Second operand 6 states and 94 transitions. [2024-06-28 03:40:05,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 45 transitions, 229 flow [2024-06-28 03:40:05,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 45 transitions, 218 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 03:40:05,005 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 129 flow [2024-06-28 03:40:05,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=129, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2024-06-28 03:40:05,006 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2024-06-28 03:40:05,006 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 129 flow [2024-06-28 03:40:05,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 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) [2024-06-28 03:40:05,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:05,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:05,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:40:05,007 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:05,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:05,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1857283847, now seen corresponding path program 1 times [2024-06-28 03:40:05,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:05,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373372422] [2024-06-28 03:40:05,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:05,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:05,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:05,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:05,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373372422] [2024-06-28 03:40:05,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373372422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:05,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:05,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 03:40:05,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560921857] [2024-06-28 03:40:05,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:05,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:40:05,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:05,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:40:05,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:40:05,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 32 [2024-06-28 03:40:05,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:05,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:05,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 32 [2024-06-28 03:40:05,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:05,127 INFO L124 PetriNetUnfolderBase]: 46/131 cut-off events. [2024-06-28 03:40:05,127 INFO L125 PetriNetUnfolderBase]: For 132/137 co-relation queries the response was YES. [2024-06-28 03:40:05,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 343 conditions, 131 events. 46/131 cut-off events. For 132/137 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 510 event pairs, 29 based on Foata normal form. 18/137 useless extension candidates. Maximal degree in co-relation 326. Up to 65 conditions per place. [2024-06-28 03:40:05,128 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 12 selfloop transitions, 7 changer transitions 0/31 dead transitions. [2024-06-28 03:40:05,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 31 transitions, 161 flow [2024-06-28 03:40:05,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:40:05,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:40:05,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2024-06-28 03:40:05,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2024-06-28 03:40:05,130 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 129 flow. Second operand 3 states and 62 transitions. [2024-06-28 03:40:05,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 31 transitions, 161 flow [2024-06-28 03:40:05,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 31 transitions, 145 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 03:40:05,131 INFO L231 Difference]: Finished difference. Result has 40 places, 29 transitions, 117 flow [2024-06-28 03:40:05,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=40, PETRI_TRANSITIONS=29} [2024-06-28 03:40:05,132 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2024-06-28 03:40:05,132 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 29 transitions, 117 flow [2024-06-28 03:40:05,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:05,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:05,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:05,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:40:05,133 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:05,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:05,133 INFO L85 PathProgramCache]: Analyzing trace with hash 619756077, now seen corresponding path program 1 times [2024-06-28 03:40:05,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:05,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598443542] [2024-06-28 03:40:05,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:05,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:05,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:05,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:05,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:05,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598443542] [2024-06-28 03:40:05,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598443542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:05,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:05,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:40:05,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120314217] [2024-06-28 03:40:05,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:05,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:40:05,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:05,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:40:05,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:40:05,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:40:05,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 29 transitions, 117 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:05,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:05,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:40:05,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:05,856 INFO L124 PetriNetUnfolderBase]: 115/243 cut-off events. [2024-06-28 03:40:05,856 INFO L125 PetriNetUnfolderBase]: For 361/361 co-relation queries the response was YES. [2024-06-28 03:40:05,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 727 conditions, 243 events. 115/243 cut-off events. For 361/361 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 857 event pairs, 60 based on Foata normal form. 2/244 useless extension candidates. Maximal degree in co-relation 710. Up to 203 conditions per place. [2024-06-28 03:40:05,858 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 30 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2024-06-28 03:40:05,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 45 transitions, 255 flow [2024-06-28 03:40:05,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:40:05,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:40:05,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-28 03:40:05,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39732142857142855 [2024-06-28 03:40:05,859 INFO L175 Difference]: Start difference. First operand has 40 places, 29 transitions, 117 flow. Second operand 7 states and 89 transitions. [2024-06-28 03:40:05,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 45 transitions, 255 flow [2024-06-28 03:40:05,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 45 transitions, 246 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-28 03:40:05,864 INFO L231 Difference]: Finished difference. Result has 47 places, 34 transitions, 171 flow [2024-06-28 03:40:05,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=171, PETRI_PLACES=47, PETRI_TRANSITIONS=34} [2024-06-28 03:40:05,865 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 16 predicate places. [2024-06-28 03:40:05,866 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 34 transitions, 171 flow [2024-06-28 03:40:05,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:05,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:05,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:05,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:40:05,866 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:05,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:05,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1741469617, now seen corresponding path program 2 times [2024-06-28 03:40:05,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:05,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445752888] [2024-06-28 03:40:05,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:05,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:05,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:06,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:06,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:06,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445752888] [2024-06-28 03:40:06,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445752888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:06,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:06,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:40:06,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830214676] [2024-06-28 03:40:06,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:06,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:40:06,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:06,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:40:06,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:40:06,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:40:06,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 34 transitions, 171 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:06,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:06,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:40:06,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:06,485 INFO L124 PetriNetUnfolderBase]: 119/255 cut-off events. [2024-06-28 03:40:06,485 INFO L125 PetriNetUnfolderBase]: For 606/606 co-relation queries the response was YES. [2024-06-28 03:40:06,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 844 conditions, 255 events. 119/255 cut-off events. For 606/606 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 936 event pairs, 52 based on Foata normal form. 2/256 useless extension candidates. Maximal degree in co-relation 823. Up to 205 conditions per place. [2024-06-28 03:40:06,487 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 29 selfloop transitions, 12 changer transitions 0/45 dead transitions. [2024-06-28 03:40:06,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 45 transitions, 293 flow [2024-06-28 03:40:06,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:40:06,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:40:06,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 78 transitions. [2024-06-28 03:40:06,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 03:40:06,488 INFO L175 Difference]: Start difference. First operand has 47 places, 34 transitions, 171 flow. Second operand 6 states and 78 transitions. [2024-06-28 03:40:06,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 45 transitions, 293 flow [2024-06-28 03:40:06,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 45 transitions, 272 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 03:40:06,490 INFO L231 Difference]: Finished difference. Result has 49 places, 36 transitions, 200 flow [2024-06-28 03:40:06,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=49, PETRI_TRANSITIONS=36} [2024-06-28 03:40:06,490 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 18 predicate places. [2024-06-28 03:40:06,491 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 36 transitions, 200 flow [2024-06-28 03:40:06,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:06,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:06,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:06,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:40:06,491 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:06,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:06,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1747719217, now seen corresponding path program 3 times [2024-06-28 03:40:06,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:06,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767880675] [2024-06-28 03:40:06,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:06,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:06,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:06,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:06,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:06,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767880675] [2024-06-28 03:40:06,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767880675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:06,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:06,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:40:06,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453895688] [2024-06-28 03:40:06,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:06,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:40:07,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:07,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:40:07,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:40:07,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:40:07,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 36 transitions, 200 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:07,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:07,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:40:07,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:07,193 INFO L124 PetriNetUnfolderBase]: 116/248 cut-off events. [2024-06-28 03:40:07,193 INFO L125 PetriNetUnfolderBase]: For 817/817 co-relation queries the response was YES. [2024-06-28 03:40:07,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 881 conditions, 248 events. 116/248 cut-off events. For 817/817 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 887 event pairs, 54 based on Foata normal form. 2/247 useless extension candidates. Maximal degree in co-relation 859. Up to 191 conditions per place. [2024-06-28 03:40:07,195 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 26 selfloop transitions, 17 changer transitions 0/47 dead transitions. [2024-06-28 03:40:07,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 47 transitions, 340 flow [2024-06-28 03:40:07,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:40:07,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:40:07,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-28 03:40:07,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3794642857142857 [2024-06-28 03:40:07,196 INFO L175 Difference]: Start difference. First operand has 49 places, 36 transitions, 200 flow. Second operand 7 states and 85 transitions. [2024-06-28 03:40:07,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 47 transitions, 340 flow [2024-06-28 03:40:07,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 47 transitions, 304 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 03:40:07,198 INFO L231 Difference]: Finished difference. Result has 53 places, 40 transitions, 244 flow [2024-06-28 03:40:07,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=244, PETRI_PLACES=53, PETRI_TRANSITIONS=40} [2024-06-28 03:40:07,199 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 22 predicate places. [2024-06-28 03:40:07,199 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 40 transitions, 244 flow [2024-06-28 03:40:07,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:07,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:07,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:07,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:40:07,200 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:07,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:07,201 INFO L85 PathProgramCache]: Analyzing trace with hash -32540374, now seen corresponding path program 1 times [2024-06-28 03:40:07,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:07,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802053040] [2024-06-28 03:40:07,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:07,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:07,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:08,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:08,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:08,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802053040] [2024-06-28 03:40:08,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802053040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:08,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:08,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:40:08,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158601780] [2024-06-28 03:40:08,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:08,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:40:08,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:08,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:40:08,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:40:08,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:40:08,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 40 transitions, 244 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:08,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:08,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:40:08,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:08,299 INFO L124 PetriNetUnfolderBase]: 125/271 cut-off events. [2024-06-28 03:40:08,299 INFO L125 PetriNetUnfolderBase]: For 847/847 co-relation queries the response was YES. [2024-06-28 03:40:08,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 963 conditions, 271 events. 125/271 cut-off events. For 847/847 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1027 event pairs, 51 based on Foata normal form. 1/271 useless extension candidates. Maximal degree in co-relation 939. Up to 210 conditions per place. [2024-06-28 03:40:08,302 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 37 selfloop transitions, 16 changer transitions 0/57 dead transitions. [2024-06-28 03:40:08,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 57 transitions, 418 flow [2024-06-28 03:40:08,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:40:08,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:40:08,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-28 03:40:08,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-28 03:40:08,303 INFO L175 Difference]: Start difference. First operand has 53 places, 40 transitions, 244 flow. Second operand 8 states and 100 transitions. [2024-06-28 03:40:08,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 57 transitions, 418 flow [2024-06-28 03:40:08,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 57 transitions, 390 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 03:40:08,306 INFO L231 Difference]: Finished difference. Result has 59 places, 46 transitions, 300 flow [2024-06-28 03:40:08,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=300, PETRI_PLACES=59, PETRI_TRANSITIONS=46} [2024-06-28 03:40:08,307 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 28 predicate places. [2024-06-28 03:40:08,307 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 46 transitions, 300 flow [2024-06-28 03:40:08,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:08,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:08,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:08,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:40:08,308 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:08,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:08,308 INFO L85 PathProgramCache]: Analyzing trace with hash -403186356, now seen corresponding path program 2 times [2024-06-28 03:40:08,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:08,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811502268] [2024-06-28 03:40:08,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:08,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:08,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:09,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:09,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:09,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811502268] [2024-06-28 03:40:09,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811502268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:09,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:09,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:40:09,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366341955] [2024-06-28 03:40:09,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:09,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:40:09,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:09,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:40:09,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:40:09,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:40:09,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 300 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:09,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:09,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:40:09,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:09,256 INFO L124 PetriNetUnfolderBase]: 124/269 cut-off events. [2024-06-28 03:40:09,257 INFO L125 PetriNetUnfolderBase]: For 1118/1118 co-relation queries the response was YES. [2024-06-28 03:40:09,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1011 conditions, 269 events. 124/269 cut-off events. For 1118/1118 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1015 event pairs, 51 based on Foata normal form. 1/269 useless extension candidates. Maximal degree in co-relation 984. Up to 203 conditions per place. [2024-06-28 03:40:09,258 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 36 selfloop transitions, 17 changer transitions 0/57 dead transitions. [2024-06-28 03:40:09,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 57 transitions, 442 flow [2024-06-28 03:40:09,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:40:09,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:40:09,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-28 03:40:09,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39732142857142855 [2024-06-28 03:40:09,260 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 300 flow. Second operand 7 states and 89 transitions. [2024-06-28 03:40:09,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 57 transitions, 442 flow [2024-06-28 03:40:09,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 57 transitions, 421 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-28 03:40:09,263 INFO L231 Difference]: Finished difference. Result has 63 places, 47 transitions, 332 flow [2024-06-28 03:40:09,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=332, PETRI_PLACES=63, PETRI_TRANSITIONS=47} [2024-06-28 03:40:09,263 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 32 predicate places. [2024-06-28 03:40:09,263 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 47 transitions, 332 flow [2024-06-28 03:40:09,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:09,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:09,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:09,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:40:09,264 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:09,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:09,265 INFO L85 PathProgramCache]: Analyzing trace with hash 533735291, now seen corresponding path program 1 times [2024-06-28 03:40:09,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:09,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132560650] [2024-06-28 03:40:09,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:09,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:09,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:09,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:09,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:09,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132560650] [2024-06-28 03:40:09,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132560650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:09,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:09,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:40:09,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988035129] [2024-06-28 03:40:09,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:09,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:40:09,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:09,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:40:09,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:40:09,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 32 [2024-06-28 03:40:09,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 47 transitions, 332 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:09,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:09,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 32 [2024-06-28 03:40:09,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:09,413 INFO L124 PetriNetUnfolderBase]: 39/121 cut-off events. [2024-06-28 03:40:09,413 INFO L125 PetriNetUnfolderBase]: For 528/532 co-relation queries the response was YES. [2024-06-28 03:40:09,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 431 conditions, 121 events. 39/121 cut-off events. For 528/532 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 513 event pairs, 8 based on Foata normal form. 12/120 useless extension candidates. Maximal degree in co-relation 403. Up to 39 conditions per place. [2024-06-28 03:40:09,414 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 15 selfloop transitions, 9 changer transitions 0/39 dead transitions. [2024-06-28 03:40:09,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 39 transitions, 328 flow [2024-06-28 03:40:09,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:40:09,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:40:09,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 79 transitions. [2024-06-28 03:40:09,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49375 [2024-06-28 03:40:09,416 INFO L175 Difference]: Start difference. First operand has 63 places, 47 transitions, 332 flow. Second operand 5 states and 79 transitions. [2024-06-28 03:40:09,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 39 transitions, 328 flow [2024-06-28 03:40:09,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 39 transitions, 283 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 03:40:09,418 INFO L231 Difference]: Finished difference. Result has 55 places, 37 transitions, 249 flow [2024-06-28 03:40:09,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=249, PETRI_PLACES=55, PETRI_TRANSITIONS=37} [2024-06-28 03:40:09,419 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2024-06-28 03:40:09,419 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 37 transitions, 249 flow [2024-06-28 03:40:09,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:09,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:09,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:09,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:40:09,420 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:09,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:09,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1350219669, now seen corresponding path program 1 times [2024-06-28 03:40:09,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:09,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445483079] [2024-06-28 03:40:09,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:09,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:09,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:10,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:10,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:10,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445483079] [2024-06-28 03:40:10,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445483079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:10,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:10,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:40:10,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371418863] [2024-06-28 03:40:10,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:10,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:40:10,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:10,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:40:10,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:40:10,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:40:10,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 37 transitions, 249 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:10,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:10,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:40:10,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:10,466 INFO L124 PetriNetUnfolderBase]: 49/144 cut-off events. [2024-06-28 03:40:10,466 INFO L125 PetriNetUnfolderBase]: For 434/434 co-relation queries the response was YES. [2024-06-28 03:40:10,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 144 events. 49/144 cut-off events. For 434/434 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 583 event pairs, 4 based on Foata normal form. 2/145 useless extension candidates. Maximal degree in co-relation 472. Up to 82 conditions per place. [2024-06-28 03:40:10,467 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 28 selfloop transitions, 7 changer transitions 9/48 dead transitions. [2024-06-28 03:40:10,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 48 transitions, 364 flow [2024-06-28 03:40:10,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:40:10,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:40:10,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-28 03:40:10,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-28 03:40:10,468 INFO L175 Difference]: Start difference. First operand has 55 places, 37 transitions, 249 flow. Second operand 8 states and 88 transitions. [2024-06-28 03:40:10,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 48 transitions, 364 flow [2024-06-28 03:40:10,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 48 transitions, 353 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 03:40:10,470 INFO L231 Difference]: Finished difference. Result has 61 places, 33 transitions, 220 flow [2024-06-28 03:40:10,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=220, PETRI_PLACES=61, PETRI_TRANSITIONS=33} [2024-06-28 03:40:10,470 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 30 predicate places. [2024-06-28 03:40:10,470 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 33 transitions, 220 flow [2024-06-28 03:40:10,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:10,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:10,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:10,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:40:10,471 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:10,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:10,471 INFO L85 PathProgramCache]: Analyzing trace with hash -917866517, now seen corresponding path program 2 times [2024-06-28 03:40:10,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:10,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096080603] [2024-06-28 03:40:10,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:10,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:10,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:11,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:11,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:11,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096080603] [2024-06-28 03:40:11,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096080603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:11,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:11,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:40:11,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673885542] [2024-06-28 03:40:11,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:11,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:40:11,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:11,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:40:11,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:40:11,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:40:11,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 33 transitions, 220 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:11,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:11,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:40:11,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:11,360 INFO L124 PetriNetUnfolderBase]: 41/124 cut-off events. [2024-06-28 03:40:11,361 INFO L125 PetriNetUnfolderBase]: For 438/438 co-relation queries the response was YES. [2024-06-28 03:40:11,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 456 conditions, 124 events. 41/124 cut-off events. For 438/438 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 454 event pairs, 2 based on Foata normal form. 2/125 useless extension candidates. Maximal degree in co-relation 439. Up to 38 conditions per place. [2024-06-28 03:40:11,362 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 21 selfloop transitions, 10 changer transitions 11/46 dead transitions. [2024-06-28 03:40:11,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 46 transitions, 336 flow [2024-06-28 03:40:11,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:40:11,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:40:11,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-28 03:40:11,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35546875 [2024-06-28 03:40:11,363 INFO L175 Difference]: Start difference. First operand has 61 places, 33 transitions, 220 flow. Second operand 8 states and 91 transitions. [2024-06-28 03:40:11,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 46 transitions, 336 flow [2024-06-28 03:40:11,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 46 transitions, 316 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:11,365 INFO L231 Difference]: Finished difference. Result has 57 places, 28 transitions, 186 flow [2024-06-28 03:40:11,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=186, PETRI_PLACES=57, PETRI_TRANSITIONS=28} [2024-06-28 03:40:11,365 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 26 predicate places. [2024-06-28 03:40:11,365 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 28 transitions, 186 flow [2024-06-28 03:40:11,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:11,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:11,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:11,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:40:11,366 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:11,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:11,366 INFO L85 PathProgramCache]: Analyzing trace with hash -917806067, now seen corresponding path program 3 times [2024-06-28 03:40:11,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:11,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932923074] [2024-06-28 03:40:11,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:11,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:11,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:12,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:12,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:12,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932923074] [2024-06-28 03:40:12,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932923074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:12,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:12,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:40:12,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431373843] [2024-06-28 03:40:12,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:12,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:40:12,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:12,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:40:12,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:40:12,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:40:12,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 28 transitions, 186 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:12,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:12,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:40:12,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:12,357 INFO L124 PetriNetUnfolderBase]: 22/89 cut-off events. [2024-06-28 03:40:12,357 INFO L125 PetriNetUnfolderBase]: For 282/282 co-relation queries the response was YES. [2024-06-28 03:40:12,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 89 events. 22/89 cut-off events. For 282/282 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 307 event pairs, 1 based on Foata normal form. 2/90 useless extension candidates. Maximal degree in co-relation 306. Up to 19 conditions per place. [2024-06-28 03:40:12,358 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 11 selfloop transitions, 3 changer transitions 20/38 dead transitions. [2024-06-28 03:40:12,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 38 transitions, 278 flow [2024-06-28 03:40:12,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:40:12,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:40:12,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-28 03:40:12,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-28 03:40:12,373 INFO L175 Difference]: Start difference. First operand has 57 places, 28 transitions, 186 flow. Second operand 8 states and 86 transitions. [2024-06-28 03:40:12,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 38 transitions, 278 flow [2024-06-28 03:40:12,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 38 transitions, 250 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:12,374 INFO L231 Difference]: Finished difference. Result has 54 places, 17 transitions, 79 flow [2024-06-28 03:40:12,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=79, PETRI_PLACES=54, PETRI_TRANSITIONS=17} [2024-06-28 03:40:12,375 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 23 predicate places. [2024-06-28 03:40:12,375 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 17 transitions, 79 flow [2024-06-28 03:40:12,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:12,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:12,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:12,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:40:12,376 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:12,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:12,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1090416619, now seen corresponding path program 4 times [2024-06-28 03:40:12,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:12,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388551128] [2024-06-28 03:40:12,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:12,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:12,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:13,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:13,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:13,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388551128] [2024-06-28 03:40:13,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388551128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:13,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:13,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:40:13,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423862834] [2024-06-28 03:40:13,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:13,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:40:13,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:13,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:40:13,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:40:13,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:40:13,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 17 transitions, 79 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:13,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:13,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:40:13,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:13,352 INFO L124 PetriNetUnfolderBase]: 5/28 cut-off events. [2024-06-28 03:40:13,353 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2024-06-28 03:40:13,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 28 events. 5/28 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 20 event pairs, 0 based on Foata normal form. 2/29 useless extension candidates. Maximal degree in co-relation 77. Up to 6 conditions per place. [2024-06-28 03:40:13,353 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2024-06-28 03:40:13,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 20 transitions, 105 flow [2024-06-28 03:40:13,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:40:13,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:40:13,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 73 transitions. [2024-06-28 03:40:13,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28515625 [2024-06-28 03:40:13,354 INFO L175 Difference]: Start difference. First operand has 54 places, 17 transitions, 79 flow. Second operand 8 states and 73 transitions. [2024-06-28 03:40:13,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 20 transitions, 105 flow [2024-06-28 03:40:13,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 20 transitions, 79 flow, removed 1 selfloop flow, removed 13 redundant places. [2024-06-28 03:40:13,355 INFO L231 Difference]: Finished difference. Result has 35 places, 0 transitions, 0 flow [2024-06-28 03:40:13,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=39, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=35, PETRI_TRANSITIONS=0} [2024-06-28 03:40:13,355 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-28 03:40:13,355 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 0 transitions, 0 flow [2024-06-28 03:40:13,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:13,358 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-28 03:40:13,358 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-28 03:40:13,358 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-28 03:40:13,358 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-28 03:40:13,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:40:13,358 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 2, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:13,361 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 03:40:13,361 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 03:40:13,364 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-28 03:40:13,364 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-28 03:40:13,364 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 03:40:13 BasicIcfg [2024-06-28 03:40:13,365 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 03:40:13,365 INFO L158 Benchmark]: Toolchain (without parser) took 13243.83ms. Allocated memory was 153.1MB in the beginning and 532.7MB in the end (delta: 379.6MB). Free memory was 97.8MB in the beginning and 295.7MB in the end (delta: -197.9MB). Peak memory consumption was 183.8MB. Max. memory is 16.1GB. [2024-06-28 03:40:13,365 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 153.1MB. Free memory is still 122.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 03:40:13,365 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 153.1MB. Free memory is still 103.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 03:40:13,366 INFO L158 Benchmark]: CACSL2BoogieTranslator took 577.36ms. Allocated memory is still 153.1MB. Free memory was 97.8MB in the beginning and 60.9MB in the end (delta: 36.9MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2024-06-28 03:40:13,366 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.31ms. Allocated memory is still 153.1MB. Free memory was 60.9MB in the beginning and 57.4MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 03:40:13,366 INFO L158 Benchmark]: Boogie Preprocessor took 90.24ms. Allocated memory is still 153.1MB. Free memory was 57.4MB in the beginning and 121.3MB in the end (delta: -63.9MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. [2024-06-28 03:40:13,366 INFO L158 Benchmark]: RCFGBuilder took 576.32ms. Allocated memory is still 153.1MB. Free memory was 121.3MB in the beginning and 54.2MB in the end (delta: 67.1MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. [2024-06-28 03:40:13,366 INFO L158 Benchmark]: TraceAbstraction took 11921.27ms. Allocated memory was 153.1MB in the beginning and 532.7MB in the end (delta: 379.6MB). Free memory was 53.2MB in the beginning and 295.7MB in the end (delta: -242.5MB). Peak memory consumption was 137.0MB. Max. memory is 16.1GB. [2024-06-28 03:40:13,368 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 153.1MB. Free memory is still 122.6MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.14ms. Allocated memory is still 153.1MB. Free memory is still 103.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 577.36ms. Allocated memory is still 153.1MB. Free memory was 97.8MB in the beginning and 60.9MB in the end (delta: 36.9MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.31ms. Allocated memory is still 153.1MB. Free memory was 60.9MB in the beginning and 57.4MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 90.24ms. Allocated memory is still 153.1MB. Free memory was 57.4MB in the beginning and 121.3MB in the end (delta: -63.9MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. * RCFGBuilder took 576.32ms. Allocated memory is still 153.1MB. Free memory was 121.3MB in the beginning and 54.2MB in the end (delta: 67.1MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. * TraceAbstraction took 11921.27ms. Allocated memory was 153.1MB in the beginning and 532.7MB in the end (delta: 379.6MB). Free memory was 53.2MB in the beginning and 295.7MB in the end (delta: -242.5MB). Peak memory consumption was 137.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 837]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 838]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 52 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 11.8s, OverallIterations: 15, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 458 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 350 mSDsluCounter, 153 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 122 mSDsCounter, 86 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1937 IncrementalHoareTripleChecker+Invalid, 2023 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 86 mSolverCounterUnsat, 31 mSDtfsCounter, 1937 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=332occurred in iteration=10, InterpolantAutomatonStates: 93, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 8.5s InterpolantComputationTime, 187 NumberOfCodeBlocks, 187 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 172 ConstructedInterpolants, 0 QuantifiedInterpolants, 7253 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-28 03:40:13,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE