./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe006_rmo.oepc_rmo.opt-thin000_rmo.oepc_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/safe006_rmo.oepc_rmo.opt-thin000_rmo.oepc_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cde23df1 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/safe006_rmo.oepc_rmo.opt-thin000_rmo.oepc_rmo.opt.i ./goblint.2024-05-21_14-57-05.files/protection/safe006_rmo.oepc_rmo.opt-thin000_rmo.oepc_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-cde23df-m [2024-06-14 12:57:59,872 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 12:57:59,954 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 12:57:59,960 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 12:57:59,961 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 12:57:59,993 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 12:57:59,994 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 12:57:59,994 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 12:57:59,995 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 12:57:59,998 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 12:57:59,999 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 12:57:59,999 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 12:57:59,999 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 12:58:00,001 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 12:58:00,001 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 12:58:00,002 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 12:58:00,002 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 12:58:00,002 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 12:58:00,003 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 12:58:00,003 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 12:58:00,004 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 12:58:00,004 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 12:58:00,005 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 12:58:00,005 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 12:58:00,005 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 12:58:00,006 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 12:58:00,006 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 12:58:00,006 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 12:58:00,007 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 12:58:00,007 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 12:58:00,008 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 12:58:00,008 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 12:58:00,009 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 12:58:00,009 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 12:58:00,009 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 12:58:00,009 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 12:58:00,010 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 12:58:00,010 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 12:58:00,010 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 12:58:00,010 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 12:58:00,010 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 12:58:00,012 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 12:58:00,012 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 12:58:00,012 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 12:58:00,277 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 12:58:00,305 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 12:58:00,307 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 12:58:00,308 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 12:58:00,309 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 12:58:00,310 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/safe006_rmo.oepc_rmo.opt-thin000_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-14 12:58:00,575 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 12:58:00,576 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 12:58:00,577 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe006_rmo.oepc_rmo.opt-thin000_rmo.oepc_rmo.opt.i [2024-06-14 12:58:01,688 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 12:58:01,921 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 12:58:01,923 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe006_rmo.oepc_rmo.opt-thin000_rmo.oepc_rmo.opt.i [2024-06-14 12:58:01,942 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f0fa054a/51c9407e01494c9b8054ced3c30febb3/FLAGd0467dc6b [2024-06-14 12:58:01,953 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f0fa054a/51c9407e01494c9b8054ced3c30febb3 [2024-06-14 12:58:01,953 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 12:58:01,954 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 12:58:01,956 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 12:58:01,956 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 12:58:01,961 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 12:58:01,961 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:58:00" (1/2) ... [2024-06-14 12:58:01,962 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1edad9e6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:58:01, skipping insertion in model container [2024-06-14 12:58:01,962 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:58:00" (1/2) ... [2024-06-14 12:58:01,964 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@67d4af71 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:58:01, skipping insertion in model container [2024-06-14 12:58:01,964 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 12:58:01" (2/2) ... [2024-06-14 12:58:01,964 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1edad9e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:58:01, skipping insertion in model container [2024-06-14 12:58:01,964 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 12:58:01" (2/2) ... [2024-06-14 12:58:01,965 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 12:58:02,085 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 12:58:02,086 INFO L97 edCorrectnessWitness]: Location invariant before [L816-L816] (((((((((((((((((((((((((((((((! multithreaded || y$r_buff1_thd0 == (_Bool)0) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$w_buff1_used == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$w_buff1 == 0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (((0 <= *__unbuffered_p0_EAX$read_delayed_var && *__unbuffered_p0_EAX$read_delayed_var <= 1) && __unbuffered_p0_EAX$read_delayed_var == & y) && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || y$w_buff0 == 0)) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0) [2024-06-14 12:58:02,086 INFO L97 edCorrectnessWitness]: Location invariant before [L815-L815] (((((((((((((((((((((((((((((((! multithreaded || y$r_buff1_thd0 == (_Bool)0) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$w_buff1_used == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$w_buff1 == 0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (((0 <= *__unbuffered_p0_EAX$read_delayed_var && *__unbuffered_p0_EAX$read_delayed_var <= 1) && __unbuffered_p0_EAX$read_delayed_var == & y) && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || y$w_buff0 == 0)) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0) [2024-06-14 12:58:02,086 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 12:58:02,086 INFO L106 edCorrectnessWitness]: ghost_update [L813-L813] multithreaded = 1; [2024-06-14 12:58:02,147 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 12:58:02,566 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 12:58:02,578 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 12:58:02,680 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 12:58:02,739 INFO L206 MainTranslator]: Completed translation [2024-06-14 12:58:02,740 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:58:02 WrapperNode [2024-06-14 12:58:02,740 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 12:58:02,741 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 12:58:02,741 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 12:58:02,741 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 12:58:02,747 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:58:02" (1/1) ... [2024-06-14 12:58:02,779 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:58:02" (1/1) ... [2024-06-14 12:58:02,820 INFO L138 Inliner]: procedures = 174, calls = 63, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 170 [2024-06-14 12:58:02,820 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 12:58:02,821 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 12:58:02,821 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 12:58:02,821 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 12:58:02,833 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:58:02" (1/1) ... [2024-06-14 12:58:02,834 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:58:02" (1/1) ... [2024-06-14 12:58:02,837 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:58:02" (1/1) ... [2024-06-14 12:58:02,862 INFO L175 MemorySlicer]: Split 31 memory accesses to 2 slices as follows [2, 29]. 94 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 5 writes are split as follows [0, 5]. [2024-06-14 12:58:02,862 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:58:02" (1/1) ... [2024-06-14 12:58:02,862 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:58:02" (1/1) ... [2024-06-14 12:58:02,881 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:58:02" (1/1) ... [2024-06-14 12:58:02,884 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:58:02" (1/1) ... [2024-06-14 12:58:02,886 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:58:02" (1/1) ... [2024-06-14 12:58:02,887 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:58:02" (1/1) ... [2024-06-14 12:58:02,891 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 12:58:02,892 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 12:58:02,892 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 12:58:02,892 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 12:58:02,893 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:58:02" (1/1) ... [2024-06-14 12:58:02,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 12:58:02,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 12:58:02,925 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) [2024-06-14 12:58:02,932 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 [2024-06-14 12:58:02,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-14 12:58:02,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-14 12:58:02,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-14 12:58:02,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-14 12:58:02,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 12:58:02,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 12:58:02,967 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-14 12:58:02,967 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-14 12:58:02,967 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-14 12:58:02,967 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-14 12:58:02,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 12:58:02,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-14 12:58:02,968 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 12:58:02,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 12:58:02,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 12:58:02,971 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 12:58:03,135 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 12:58:03,137 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 12:58:03,517 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 12:58:03,518 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 12:58:03,855 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 12:58:03,856 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 12:58:03,857 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 12:58:03 BoogieIcfgContainer [2024-06-14 12:58:03,857 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 12:58:03,860 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 12:58:03,860 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 12:58:03,863 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 12:58:03,863 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:58:00" (1/4) ... [2024-06-14 12:58:03,864 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c002ae6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 12:58:03, skipping insertion in model container [2024-06-14 12:58:03,864 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 12:58:01" (2/4) ... [2024-06-14 12:58:03,865 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c002ae6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 12:58:03, skipping insertion in model container [2024-06-14 12:58:03,865 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:58:02" (3/4) ... [2024-06-14 12:58:03,865 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c002ae6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 12:58:03, skipping insertion in model container [2024-06-14 12:58:03,865 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 12:58:03" (4/4) ... [2024-06-14 12:58:03,866 INFO L112 eAbstractionObserver]: Analyzing ICFG safe006_rmo.oepc_rmo.opt-thin000_rmo.oepc_rmo.opt.i [2024-06-14 12:58:03,883 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 12:58:03,883 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-14 12:58:03,883 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 12:58:03,930 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 12:58:03,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-14 12:58:04,002 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-14 12:58:04,002 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 12:58:04,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 29 events. 0/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 35 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-14 12:58:04,005 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-14 12:58:04,008 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-14 12:58:04,022 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 12:58:04,028 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;@19cbfdd2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 12:58:04,029 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-14 12:58:04,034 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 12:58:04,034 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-14 12:58:04,035 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 12:58:04,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:58:04,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 12:58:04,036 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)] === [2024-06-14 12:58:04,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:58:04,041 INFO L85 PathProgramCache]: Analyzing trace with hash 19218125, now seen corresponding path program 1 times [2024-06-14 12:58:04,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:58:04,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848875063] [2024-06-14 12:58:04,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:58:04,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:58:04,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:58:05,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:58:05,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:58:05,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848875063] [2024-06-14 12:58:05,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848875063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:58:05,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:58:05,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 12:58:05,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352782197] [2024-06-14 12:58:05,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:58:05,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 12:58:05,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:58:05,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 12:58:05,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 12:58:05,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:58:05,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2024-06-14 12:58:05,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:58:05,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:58:05,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:58:06,111 INFO L124 PetriNetUnfolderBase]: 113/224 cut-off events. [2024-06-14 12:58:06,111 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-14 12:58:06,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 454 conditions, 224 events. 113/224 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 799 event pairs, 61 based on Foata normal form. 1/219 useless extension candidates. Maximal degree in co-relation 440. Up to 206 conditions per place. [2024-06-14 12:58:06,116 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 23 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-14 12:58:06,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 30 transitions, 121 flow [2024-06-14 12:58:06,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 12:58:06,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 12:58:06,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 46 transitions. [2024-06-14 12:58:06,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4946236559139785 [2024-06-14 12:58:06,128 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 46 transitions. [2024-06-14 12:58:06,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 30 transitions, 121 flow [2024-06-14 12:58:06,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 30 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 12:58:06,132 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-14 12:58:06,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2024-06-14 12:58:06,137 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-14 12:58:06,137 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-14 12:58:06,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2024-06-14 12:58:06,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:58:06,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:58:06,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 12:58:06,138 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)] === [2024-06-14 12:58:06,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:58:06,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1288791660, now seen corresponding path program 1 times [2024-06-14 12:58:06,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:58:06,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359329608] [2024-06-14 12:58:06,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:58:06,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:58:06,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:58:08,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:58:08,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:58:08,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359329608] [2024-06-14 12:58:08,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359329608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:58:08,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:58:08,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 12:58:08,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450549047] [2024-06-14 12:58:08,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:58:08,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 12:58:08,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:58:08,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 12:58:08,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-14 12:58:08,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:58:08,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2024-06-14 12:58:08,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:58:08,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:58:08,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:58:08,925 INFO L124 PetriNetUnfolderBase]: 110/218 cut-off events. [2024-06-14 12:58:08,925 INFO L125 PetriNetUnfolderBase]: For 44/47 co-relation queries the response was YES. [2024-06-14 12:58:08,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 509 conditions, 218 events. 110/218 cut-off events. For 44/47 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 757 event pairs, 46 based on Foata normal form. 4/221 useless extension candidates. Maximal degree in co-relation 494. Up to 190 conditions per place. [2024-06-14 12:58:08,928 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 28 selfloop transitions, 5 changer transitions 0/37 dead transitions. [2024-06-14 12:58:08,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 37 transitions, 167 flow [2024-06-14 12:58:08,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 12:58:08,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 12:58:08,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 59 transitions. [2024-06-14 12:58:08,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47580645161290325 [2024-06-14 12:58:08,932 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 59 transitions. [2024-06-14 12:58:08,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 37 transitions, 167 flow [2024-06-14 12:58:08,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 37 transitions, 164 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 12:58:08,936 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-14 12:58:08,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-06-14 12:58:08,937 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-14 12:58:08,938 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-14 12:58:08,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2024-06-14 12:58:08,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:58:08,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:58:08,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 12:58:08,941 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:58:08,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:58:08,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1297837192, now seen corresponding path program 1 times [2024-06-14 12:58:08,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:58:08,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779742383] [2024-06-14 12:58:08,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:58:08,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:58:08,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:58:11,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:58:11,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:58:11,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779742383] [2024-06-14 12:58:11,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779742383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:58:11,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:58:11,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 12:58:11,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809688911] [2024-06-14 12:58:11,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:58:11,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 12:58:11,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:58:11,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 12:58:11,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-14 12:58:11,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:58:11,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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) [2024-06-14 12:58:11,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:58:11,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:58:11,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:58:11,642 INFO L124 PetriNetUnfolderBase]: 125/243 cut-off events. [2024-06-14 12:58:11,642 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2024-06-14 12:58:11,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 635 conditions, 243 events. 125/243 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 834 event pairs, 37 based on Foata normal form. 2/245 useless extension candidates. Maximal degree in co-relation 618. Up to 205 conditions per place. [2024-06-14 12:58:11,649 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 38 selfloop transitions, 7 changer transitions 0/48 dead transitions. [2024-06-14 12:58:11,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 48 transitions, 241 flow [2024-06-14 12:58:11,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 12:58:11,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 12:58:11,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 68 transitions. [2024-06-14 12:58:11,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43870967741935485 [2024-06-14 12:58:11,652 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 5 states and 68 transitions. [2024-06-14 12:58:11,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 48 transitions, 241 flow [2024-06-14 12:58:11,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 48 transitions, 230 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-14 12:58:11,655 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 139 flow [2024-06-14 12:58:11,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=139, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2024-06-14 12:58:11,655 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2024-06-14 12:58:11,655 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 139 flow [2024-06-14 12:58:11,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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) [2024-06-14 12:58:11,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:58:11,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:58:11,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 12:58:11,656 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)] === [2024-06-14 12:58:11,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:58:11,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1681071367, now seen corresponding path program 1 times [2024-06-14 12:58:11,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:58:11,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763840874] [2024-06-14 12:58:11,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:58:11,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:58:11,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:58:14,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:58:14,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:58:14,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763840874] [2024-06-14 12:58:14,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763840874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:58:14,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:58:14,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 12:58:14,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664354918] [2024-06-14 12:58:14,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:58:14,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 12:58:14,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:58:14,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 12:58:14,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-14 12:58:14,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:58:14,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 139 flow. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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) [2024-06-14 12:58:14,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:58:14,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:58:14,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:58:14,861 INFO L124 PetriNetUnfolderBase]: 121/235 cut-off events. [2024-06-14 12:58:14,861 INFO L125 PetriNetUnfolderBase]: For 244/244 co-relation queries the response was YES. [2024-06-14 12:58:14,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 694 conditions, 235 events. 121/235 cut-off events. For 244/244 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 788 event pairs, 18 based on Foata normal form. 4/239 useless extension candidates. Maximal degree in co-relation 674. Up to 175 conditions per place. [2024-06-14 12:58:14,863 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 38 selfloop transitions, 8 changer transitions 0/49 dead transitions. [2024-06-14 12:58:14,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 49 transitions, 263 flow [2024-06-14 12:58:14,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:58:14,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:58:14,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 74 transitions. [2024-06-14 12:58:14,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-14 12:58:14,865 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 139 flow. Second operand 6 states and 74 transitions. [2024-06-14 12:58:14,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 49 transitions, 263 flow [2024-06-14 12:58:14,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 49 transitions, 263 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-14 12:58:14,868 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 151 flow [2024-06-14 12:58:14,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=151, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2024-06-14 12:58:14,869 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 14 predicate places. [2024-06-14 12:58:14,869 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 151 flow [2024-06-14 12:58:14,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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) [2024-06-14 12:58:14,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:58:14,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:58:14,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 12:58:14,870 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)] === [2024-06-14 12:58:14,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:58:14,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1476656695, now seen corresponding path program 1 times [2024-06-14 12:58:14,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:58:14,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467054534] [2024-06-14 12:58:14,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:58:14,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:58:14,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:58:16,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:58:16,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:58:16,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467054534] [2024-06-14 12:58:16,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467054534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:58:16,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:58:16,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:58:16,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666931492] [2024-06-14 12:58:16,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:58:16,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:58:16,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:58:16,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:58:16,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:58:16,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:58:16,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 151 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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) [2024-06-14 12:58:16,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:58:16,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:58:16,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:58:17,089 INFO L124 PetriNetUnfolderBase]: 117/229 cut-off events. [2024-06-14 12:58:17,089 INFO L125 PetriNetUnfolderBase]: For 369/369 co-relation queries the response was YES. [2024-06-14 12:58:17,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 730 conditions, 229 events. 117/229 cut-off events. For 369/369 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 774 event pairs, 32 based on Foata normal form. 2/231 useless extension candidates. Maximal degree in co-relation 707. Up to 204 conditions per place. [2024-06-14 12:58:17,092 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 31 selfloop transitions, 7 changer transitions 0/41 dead transitions. [2024-06-14 12:58:17,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 41 transitions, 249 flow [2024-06-14 12:58:17,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 12:58:17,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 12:58:17,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 57 transitions. [2024-06-14 12:58:17,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-14 12:58:17,100 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 151 flow. Second operand 5 states and 57 transitions. [2024-06-14 12:58:17,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 41 transitions, 249 flow [2024-06-14 12:58:17,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 41 transitions, 228 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-14 12:58:17,107 INFO L231 Difference]: Finished difference. Result has 44 places, 34 transitions, 159 flow [2024-06-14 12:58:17,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=159, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2024-06-14 12:58:17,111 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 14 predicate places. [2024-06-14 12:58:17,112 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 159 flow [2024-06-14 12:58:17,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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) [2024-06-14 12:58:17,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:58:17,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:58:17,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 12:58:17,113 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)] === [2024-06-14 12:58:17,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:58:17,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1208094722, now seen corresponding path program 1 times [2024-06-14 12:58:17,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:58:17,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732948914] [2024-06-14 12:58:17,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:58:17,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:58:17,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:58:19,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:58:19,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:58:19,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732948914] [2024-06-14 12:58:19,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732948914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:58:19,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:58:19,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:58:19,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657089766] [2024-06-14 12:58:19,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:58:19,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:58:19,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:58:19,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:58:19,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:58:19,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:58:19,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 159 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2024-06-14 12:58:19,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:58:19,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:58:19,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:58:20,674 INFO L124 PetriNetUnfolderBase]: 120/236 cut-off events. [2024-06-14 12:58:20,674 INFO L125 PetriNetUnfolderBase]: For 434/434 co-relation queries the response was YES. [2024-06-14 12:58:20,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 772 conditions, 236 events. 120/236 cut-off events. For 434/434 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 807 event pairs, 31 based on Foata normal form. 1/237 useless extension candidates. Maximal degree in co-relation 748. Up to 181 conditions per place. [2024-06-14 12:58:20,676 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 38 selfloop transitions, 14 changer transitions 0/55 dead transitions. [2024-06-14 12:58:20,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 55 transitions, 333 flow [2024-06-14 12:58:20,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:58:20,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:58:20,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-14 12:58:20,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3824884792626728 [2024-06-14 12:58:20,678 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 159 flow. Second operand 7 states and 83 transitions. [2024-06-14 12:58:20,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 55 transitions, 333 flow [2024-06-14 12:58:20,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 55 transitions, 320 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-14 12:58:20,680 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 203 flow [2024-06-14 12:58:20,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=203, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2024-06-14 12:58:20,681 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 18 predicate places. [2024-06-14 12:58:20,681 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 203 flow [2024-06-14 12:58:20,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2024-06-14 12:58:20,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:58:20,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:58:20,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 12:58:20,682 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)] === [2024-06-14 12:58:20,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:58:20,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1902226242, now seen corresponding path program 2 times [2024-06-14 12:58:20,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:58:20,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260366446] [2024-06-14 12:58:20,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:58:20,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:58:20,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:58:23,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:58:23,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:58:23,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260366446] [2024-06-14 12:58:23,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260366446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:58:23,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:58:23,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:58:23,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109419247] [2024-06-14 12:58:23,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:58:23,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:58:23,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:58:23,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:58:23,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:58:23,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:58:23,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 203 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2024-06-14 12:58:23,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:58:23,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:58:23,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:58:23,944 INFO L124 PetriNetUnfolderBase]: 126/248 cut-off events. [2024-06-14 12:58:23,944 INFO L125 PetriNetUnfolderBase]: For 610/610 co-relation queries the response was YES. [2024-06-14 12:58:23,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 878 conditions, 248 events. 126/248 cut-off events. For 610/610 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 879 event pairs, 31 based on Foata normal form. 1/249 useless extension candidates. Maximal degree in co-relation 853. Up to 205 conditions per place. [2024-06-14 12:58:23,947 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 38 selfloop transitions, 13 changer transitions 0/54 dead transitions. [2024-06-14 12:58:23,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 54 transitions, 361 flow [2024-06-14 12:58:23,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:58:23,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:58:23,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 77 transitions. [2024-06-14 12:58:23,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-14 12:58:23,948 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 203 flow. Second operand 7 states and 77 transitions. [2024-06-14 12:58:23,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 54 transitions, 361 flow [2024-06-14 12:58:23,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 54 transitions, 342 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-14 12:58:23,951 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 247 flow [2024-06-14 12:58:23,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=247, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2024-06-14 12:58:23,952 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 22 predicate places. [2024-06-14 12:58:23,952 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 247 flow [2024-06-14 12:58:23,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2024-06-14 12:58:23,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:58:23,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:58:23,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 12:58:23,953 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)] === [2024-06-14 12:58:23,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:58:23,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1208089886, now seen corresponding path program 1 times [2024-06-14 12:58:23,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:58:23,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791233110] [2024-06-14 12:58:23,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:58:23,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:58:23,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:58:26,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:58:26,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:58:26,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791233110] [2024-06-14 12:58:26,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791233110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:58:26,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:58:26,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:58:26,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748805945] [2024-06-14 12:58:26,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:58:26,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:58:26,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:58:26,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:58:26,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:58:26,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:58:26,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 247 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2024-06-14 12:58:26,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:58:26,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:58:26,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:58:27,255 INFO L124 PetriNetUnfolderBase]: 142/274 cut-off events. [2024-06-14 12:58:27,255 INFO L125 PetriNetUnfolderBase]: For 840/840 co-relation queries the response was YES. [2024-06-14 12:58:27,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1008 conditions, 274 events. 142/274 cut-off events. For 840/840 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 970 event pairs, 33 based on Foata normal form. 2/276 useless extension candidates. Maximal degree in co-relation 981. Up to 219 conditions per place. [2024-06-14 12:58:27,258 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 44 selfloop transitions, 15 changer transitions 0/62 dead transitions. [2024-06-14 12:58:27,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 62 transitions, 431 flow [2024-06-14 12:58:27,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:58:27,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:58:27,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-14 12:58:27,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-14 12:58:27,260 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 247 flow. Second operand 8 states and 88 transitions. [2024-06-14 12:58:27,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 62 transitions, 431 flow [2024-06-14 12:58:27,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 62 transitions, 402 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-14 12:58:27,264 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 273 flow [2024-06-14 12:58:27,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=273, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2024-06-14 12:58:27,265 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 26 predicate places. [2024-06-14 12:58:27,265 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 273 flow [2024-06-14 12:58:27,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2024-06-14 12:58:27,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:58:27,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:58:27,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 12:58:27,266 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)] === [2024-06-14 12:58:27,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:58:27,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1007484236, now seen corresponding path program 2 times [2024-06-14 12:58:27,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:58:27,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006277469] [2024-06-14 12:58:27,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:58:27,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:58:27,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:58:29,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:58:29,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:58:29,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006277469] [2024-06-14 12:58:29,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006277469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:58:29,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:58:29,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:58:29,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867473137] [2024-06-14 12:58:29,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:58:29,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:58:29,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:58:29,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:58:29,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:58:29,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:58:29,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 273 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2024-06-14 12:58:29,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:58:29,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:58:29,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:58:30,173 INFO L124 PetriNetUnfolderBase]: 138/269 cut-off events. [2024-06-14 12:58:30,173 INFO L125 PetriNetUnfolderBase]: For 1054/1056 co-relation queries the response was YES. [2024-06-14 12:58:30,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1036 conditions, 269 events. 138/269 cut-off events. For 1054/1056 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 964 event pairs, 37 based on Foata normal form. 4/273 useless extension candidates. Maximal degree in co-relation 1008. Up to 199 conditions per place. [2024-06-14 12:58:30,175 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 39 selfloop transitions, 16 changer transitions 0/58 dead transitions. [2024-06-14 12:58:30,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 58 transitions, 433 flow [2024-06-14 12:58:30,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:58:30,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:58:30,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2024-06-14 12:58:30,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-14 12:58:30,177 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 273 flow. Second operand 6 states and 69 transitions. [2024-06-14 12:58:30,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 58 transitions, 433 flow [2024-06-14 12:58:30,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 58 transitions, 414 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-14 12:58:30,181 INFO L231 Difference]: Finished difference. Result has 58 places, 48 transitions, 307 flow [2024-06-14 12:58:30,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=307, PETRI_PLACES=58, PETRI_TRANSITIONS=48} [2024-06-14 12:58:30,182 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 28 predicate places. [2024-06-14 12:58:30,182 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 48 transitions, 307 flow [2024-06-14 12:58:30,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2024-06-14 12:58:30,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:58:30,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:58:30,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 12:58:30,183 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)] === [2024-06-14 12:58:30,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:58:30,183 INFO L85 PathProgramCache]: Analyzing trace with hash -990740702, now seen corresponding path program 3 times [2024-06-14 12:58:30,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:58:30,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085077227] [2024-06-14 12:58:30,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:58:30,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:58:30,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:58:32,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:58:32,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:58:32,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085077227] [2024-06-14 12:58:32,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085077227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:58:32,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:58:32,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:58:32,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758896964] [2024-06-14 12:58:32,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:58:32,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:58:32,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:58:32,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:58:32,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:58:32,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:58:32,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 307 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2024-06-14 12:58:32,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:58:32,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:58:32,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:58:33,310 INFO L124 PetriNetUnfolderBase]: 136/265 cut-off events. [2024-06-14 12:58:33,311 INFO L125 PetriNetUnfolderBase]: For 1125/1125 co-relation queries the response was YES. [2024-06-14 12:58:33,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1084 conditions, 265 events. 136/265 cut-off events. For 1125/1125 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 950 event pairs, 32 based on Foata normal form. 1/266 useless extension candidates. Maximal degree in co-relation 1054. Up to 208 conditions per place. [2024-06-14 12:58:33,313 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 44 selfloop transitions, 16 changer transitions 0/63 dead transitions. [2024-06-14 12:58:33,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 63 transitions, 463 flow [2024-06-14 12:58:33,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:58:33,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:58:33,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 74 transitions. [2024-06-14 12:58:33,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-14 12:58:33,315 INFO L175 Difference]: Start difference. First operand has 58 places, 48 transitions, 307 flow. Second operand 6 states and 74 transitions. [2024-06-14 12:58:33,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 63 transitions, 463 flow [2024-06-14 12:58:33,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 63 transitions, 422 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-14 12:58:33,319 INFO L231 Difference]: Finished difference. Result has 60 places, 48 transitions, 309 flow [2024-06-14 12:58:33,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=309, PETRI_PLACES=60, PETRI_TRANSITIONS=48} [2024-06-14 12:58:33,321 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 30 predicate places. [2024-06-14 12:58:33,321 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 48 transitions, 309 flow [2024-06-14 12:58:33,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2024-06-14 12:58:33,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:58:33,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:58:33,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 12:58:33,323 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)] === [2024-06-14 12:58:33,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:58:33,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1007721386, now seen corresponding path program 3 times [2024-06-14 12:58:33,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:58:33,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905613108] [2024-06-14 12:58:33,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:58:33,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:58:33,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:58:35,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:58:35,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:58:35,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905613108] [2024-06-14 12:58:35,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905613108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:58:35,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:58:35,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:58:35,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552636717] [2024-06-14 12:58:35,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:58:35,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:58:35,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:58:35,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:58:35,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:58:35,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:58:35,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 48 transitions, 309 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2024-06-14 12:58:35,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:58:35,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:58:35,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:58:36,020 INFO L124 PetriNetUnfolderBase]: 132/259 cut-off events. [2024-06-14 12:58:36,021 INFO L125 PetriNetUnfolderBase]: For 1297/1297 co-relation queries the response was YES. [2024-06-14 12:58:36,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1068 conditions, 259 events. 132/259 cut-off events. For 1297/1297 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 923 event pairs, 31 based on Foata normal form. 2/261 useless extension candidates. Maximal degree in co-relation 1037. Up to 207 conditions per place. [2024-06-14 12:58:36,023 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 43 selfloop transitions, 14 changer transitions 0/60 dead transitions. [2024-06-14 12:58:36,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 60 transitions, 451 flow [2024-06-14 12:58:36,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:58:36,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:58:36,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-06-14 12:58:36,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-14 12:58:36,024 INFO L175 Difference]: Start difference. First operand has 60 places, 48 transitions, 309 flow. Second operand 6 states and 70 transitions. [2024-06-14 12:58:36,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 60 transitions, 451 flow [2024-06-14 12:58:36,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 60 transitions, 413 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-14 12:58:36,029 INFO L231 Difference]: Finished difference. Result has 61 places, 48 transitions, 307 flow [2024-06-14 12:58:36,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=307, PETRI_PLACES=61, PETRI_TRANSITIONS=48} [2024-06-14 12:58:36,029 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 31 predicate places. [2024-06-14 12:58:36,030 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 48 transitions, 307 flow [2024-06-14 12:58:36,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2024-06-14 12:58:36,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:58:36,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:58:36,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 12:58:36,030 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)] === [2024-06-14 12:58:36,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:58:36,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1007475308, now seen corresponding path program 1 times [2024-06-14 12:58:36,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:58:36,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974457194] [2024-06-14 12:58:36,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:58:36,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:58:36,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:58:38,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:58:38,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:58:38,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974457194] [2024-06-14 12:58:38,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974457194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:58:38,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:58:38,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:58:38,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644557569] [2024-06-14 12:58:38,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:58:38,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:58:38,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:58:38,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:58:38,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:58:38,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:58:38,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 48 transitions, 307 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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) [2024-06-14 12:58:38,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:58:38,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:58:38,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:58:38,828 INFO L124 PetriNetUnfolderBase]: 129/254 cut-off events. [2024-06-14 12:58:38,828 INFO L125 PetriNetUnfolderBase]: For 1161/1161 co-relation queries the response was YES. [2024-06-14 12:58:38,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1037 conditions, 254 events. 129/254 cut-off events. For 1161/1161 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 885 event pairs, 28 based on Foata normal form. 2/256 useless extension candidates. Maximal degree in co-relation 1005. Up to 219 conditions per place. [2024-06-14 12:58:38,831 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 46 selfloop transitions, 8 changer transitions 0/57 dead transitions. [2024-06-14 12:58:38,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 57 transitions, 435 flow [2024-06-14 12:58:38,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:58:38,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:58:38,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2024-06-14 12:58:38,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-14 12:58:38,833 INFO L175 Difference]: Start difference. First operand has 61 places, 48 transitions, 307 flow. Second operand 6 states and 64 transitions. [2024-06-14 12:58:38,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 57 transitions, 435 flow [2024-06-14 12:58:38,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 57 transitions, 402 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-14 12:58:38,837 INFO L231 Difference]: Finished difference. Result has 61 places, 48 transitions, 294 flow [2024-06-14 12:58:38,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=294, PETRI_PLACES=61, PETRI_TRANSITIONS=48} [2024-06-14 12:58:38,838 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 31 predicate places. [2024-06-14 12:58:38,838 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 48 transitions, 294 flow [2024-06-14 12:58:38,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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) [2024-06-14 12:58:38,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:58:38,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:58:38,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 12:58:38,839 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)] === [2024-06-14 12:58:38,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:58:38,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1203770954, now seen corresponding path program 1 times [2024-06-14 12:58:38,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:58:38,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028617004] [2024-06-14 12:58:38,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:58:38,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:58:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:58:41,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:58:41,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:58:41,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028617004] [2024-06-14 12:58:41,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028617004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:58:41,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:58:41,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:58:41,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846332877] [2024-06-14 12:58:41,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:58:41,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:58:41,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:58:41,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:58:41,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:58:41,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:58:41,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 48 transitions, 294 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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) [2024-06-14 12:58:41,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:58:41,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:58:41,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:58:42,146 INFO L124 PetriNetUnfolderBase]: 145/284 cut-off events. [2024-06-14 12:58:42,147 INFO L125 PetriNetUnfolderBase]: For 1282/1282 co-relation queries the response was YES. [2024-06-14 12:58:42,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1130 conditions, 284 events. 145/284 cut-off events. For 1282/1282 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1034 event pairs, 32 based on Foata normal form. 2/286 useless extension candidates. Maximal degree in co-relation 1098. Up to 183 conditions per place. [2024-06-14 12:58:42,149 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 46 selfloop transitions, 26 changer transitions 0/75 dead transitions. [2024-06-14 12:58:42,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 75 transitions, 538 flow [2024-06-14 12:58:42,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:58:42,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:58:42,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-14 12:58:42,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-14 12:58:42,152 INFO L175 Difference]: Start difference. First operand has 61 places, 48 transitions, 294 flow. Second operand 10 states and 110 transitions. [2024-06-14 12:58:42,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 75 transitions, 538 flow [2024-06-14 12:58:42,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 75 transitions, 520 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-14 12:58:42,156 INFO L231 Difference]: Finished difference. Result has 67 places, 52 transitions, 365 flow [2024-06-14 12:58:42,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=365, PETRI_PLACES=67, PETRI_TRANSITIONS=52} [2024-06-14 12:58:42,157 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 37 predicate places. [2024-06-14 12:58:42,157 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 52 transitions, 365 flow [2024-06-14 12:58:42,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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) [2024-06-14 12:58:42,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:58:42,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:58:42,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 12:58:42,158 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)] === [2024-06-14 12:58:42,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:58:42,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1918360682, now seen corresponding path program 2 times [2024-06-14 12:58:42,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:58:42,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965216156] [2024-06-14 12:58:42,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:58:42,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:58:42,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:58:44,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:58:44,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:58:44,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965216156] [2024-06-14 12:58:44,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965216156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:58:44,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:58:44,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:58:44,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559458134] [2024-06-14 12:58:44,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:58:44,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:58:44,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:58:44,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:58:44,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:58:44,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:58:44,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 52 transitions, 365 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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) [2024-06-14 12:58:44,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:58:44,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:58:44,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:58:45,606 INFO L124 PetriNetUnfolderBase]: 161/314 cut-off events. [2024-06-14 12:58:45,606 INFO L125 PetriNetUnfolderBase]: For 1765/1765 co-relation queries the response was YES. [2024-06-14 12:58:45,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1349 conditions, 314 events. 161/314 cut-off events. For 1765/1765 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1196 event pairs, 32 based on Foata normal form. 2/316 useless extension candidates. Maximal degree in co-relation 1316. Up to 234 conditions per place. [2024-06-14 12:58:45,608 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 52 selfloop transitions, 21 changer transitions 0/76 dead transitions. [2024-06-14 12:58:45,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 76 transitions, 613 flow [2024-06-14 12:58:45,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:58:45,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:58:45,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-14 12:58:45,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-14 12:58:45,610 INFO L175 Difference]: Start difference. First operand has 67 places, 52 transitions, 365 flow. Second operand 10 states and 107 transitions. [2024-06-14 12:58:45,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 76 transitions, 613 flow [2024-06-14 12:58:45,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 76 transitions, 560 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-14 12:58:45,615 INFO L231 Difference]: Finished difference. Result has 71 places, 56 transitions, 399 flow [2024-06-14 12:58:45,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=399, PETRI_PLACES=71, PETRI_TRANSITIONS=56} [2024-06-14 12:58:45,616 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 41 predicate places. [2024-06-14 12:58:45,616 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 56 transitions, 399 flow [2024-06-14 12:58:45,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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) [2024-06-14 12:58:45,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:58:45,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:58:45,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 12:58:45,617 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)] === [2024-06-14 12:58:45,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:58:45,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1918366262, now seen corresponding path program 3 times [2024-06-14 12:58:45,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:58:45,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041204201] [2024-06-14 12:58:45,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:58:45,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:58:45,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:58:47,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:58:48,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:58:48,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041204201] [2024-06-14 12:58:48,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041204201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:58:48,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:58:48,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:58:48,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755539504] [2024-06-14 12:58:48,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:58:48,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:58:48,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:58:48,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:58:48,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:58:48,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:58:48,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 56 transitions, 399 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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) [2024-06-14 12:58:48,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:58:48,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:58:48,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:58:48,779 INFO L124 PetriNetUnfolderBase]: 157/310 cut-off events. [2024-06-14 12:58:48,779 INFO L125 PetriNetUnfolderBase]: For 1825/1825 co-relation queries the response was YES. [2024-06-14 12:58:48,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1337 conditions, 310 events. 157/310 cut-off events. For 1825/1825 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1195 event pairs, 32 based on Foata normal form. 2/312 useless extension candidates. Maximal degree in co-relation 1302. Up to 231 conditions per place. [2024-06-14 12:58:48,782 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 52 selfloop transitions, 21 changer transitions 0/76 dead transitions. [2024-06-14 12:58:48,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 76 transitions, 589 flow [2024-06-14 12:58:48,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:58:48,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:58:48,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-14 12:58:48,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-14 12:58:48,786 INFO L175 Difference]: Start difference. First operand has 71 places, 56 transitions, 399 flow. Second operand 11 states and 113 transitions. [2024-06-14 12:58:48,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 76 transitions, 589 flow [2024-06-14 12:58:48,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 76 transitions, 556 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-14 12:58:48,791 INFO L231 Difference]: Finished difference. Result has 76 places, 56 transitions, 413 flow [2024-06-14 12:58:48,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=413, PETRI_PLACES=76, PETRI_TRANSITIONS=56} [2024-06-14 12:58:48,793 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 46 predicate places. [2024-06-14 12:58:48,793 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 56 transitions, 413 flow [2024-06-14 12:58:48,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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) [2024-06-14 12:58:48,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:58:48,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:58:48,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 12:58:48,794 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:58:48,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:58:48,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1167238758, now seen corresponding path program 4 times [2024-06-14 12:58:48,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:58:48,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130121378] [2024-06-14 12:58:48,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:58:48,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:58:48,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:58:50,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:58:50,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:58:50,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130121378] [2024-06-14 12:58:50,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130121378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:58:50,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:58:50,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:58:50,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280819481] [2024-06-14 12:58:50,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:58:50,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:58:50,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:58:50,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:58:50,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:58:50,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:58:50,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 56 transitions, 413 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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) [2024-06-14 12:58:50,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:58:50,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:58:50,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:58:51,915 INFO L124 PetriNetUnfolderBase]: 153/305 cut-off events. [2024-06-14 12:58:51,915 INFO L125 PetriNetUnfolderBase]: For 1980/1982 co-relation queries the response was YES. [2024-06-14 12:58:51,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1340 conditions, 305 events. 153/305 cut-off events. For 1980/1982 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1178 event pairs, 33 based on Foata normal form. 4/309 useless extension candidates. Maximal degree in co-relation 1303. Up to 176 conditions per place. [2024-06-14 12:58:51,918 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 44 selfloop transitions, 30 changer transitions 0/77 dead transitions. [2024-06-14 12:58:51,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 77 transitions, 647 flow [2024-06-14 12:58:51,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:58:51,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:58:51,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-14 12:58:51,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35842293906810035 [2024-06-14 12:58:51,920 INFO L175 Difference]: Start difference. First operand has 76 places, 56 transitions, 413 flow. Second operand 9 states and 100 transitions. [2024-06-14 12:58:51,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 77 transitions, 647 flow [2024-06-14 12:58:51,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 77 transitions, 602 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-14 12:58:51,926 INFO L231 Difference]: Finished difference. Result has 75 places, 58 transitions, 455 flow [2024-06-14 12:58:51,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=455, PETRI_PLACES=75, PETRI_TRANSITIONS=58} [2024-06-14 12:58:51,927 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 45 predicate places. [2024-06-14 12:58:51,927 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 58 transitions, 455 flow [2024-06-14 12:58:51,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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) [2024-06-14 12:58:51,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:58:51,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:58:51,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 12:58:51,928 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:58:51,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:58:51,928 INFO L85 PathProgramCache]: Analyzing trace with hash -648189018, now seen corresponding path program 5 times [2024-06-14 12:58:51,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:58:51,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542651997] [2024-06-14 12:58:51,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:58:51,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:58:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:58:54,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:58:54,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:58:54,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542651997] [2024-06-14 12:58:54,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542651997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:58:54,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:58:54,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:58:54,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527418784] [2024-06-14 12:58:54,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:58:54,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:58:54,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:58:54,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:58:54,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:58:54,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:58:54,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 58 transitions, 455 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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) [2024-06-14 12:58:54,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:58:54,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:58:54,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:58:55,003 INFO L124 PetriNetUnfolderBase]: 159/316 cut-off events. [2024-06-14 12:58:55,003 INFO L125 PetriNetUnfolderBase]: For 2254/2254 co-relation queries the response was YES. [2024-06-14 12:58:55,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1449 conditions, 316 events. 159/316 cut-off events. For 2254/2254 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1238 event pairs, 30 based on Foata normal form. 2/318 useless extension candidates. Maximal degree in co-relation 1411. Up to 204 conditions per place. [2024-06-14 12:58:55,007 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 51 selfloop transitions, 28 changer transitions 0/82 dead transitions. [2024-06-14 12:58:55,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 82 transitions, 713 flow [2024-06-14 12:58:55,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:58:55,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:58:55,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-14 12:58:55,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-14 12:58:55,009 INFO L175 Difference]: Start difference. First operand has 75 places, 58 transitions, 455 flow. Second operand 9 states and 102 transitions. [2024-06-14 12:58:55,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 82 transitions, 713 flow [2024-06-14 12:58:55,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 82 transitions, 638 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-14 12:58:55,016 INFO L231 Difference]: Finished difference. Result has 77 places, 60 transitions, 466 flow [2024-06-14 12:58:55,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=466, PETRI_PLACES=77, PETRI_TRANSITIONS=60} [2024-06-14 12:58:55,017 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 47 predicate places. [2024-06-14 12:58:55,017 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 60 transitions, 466 flow [2024-06-14 12:58:55,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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) [2024-06-14 12:58:55,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:58:55,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:58:55,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 12:58:55,018 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:58:55,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:58:55,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1515337354, now seen corresponding path program 6 times [2024-06-14 12:58:55,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:58:55,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75959556] [2024-06-14 12:58:55,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:58:55,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:58:55,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:58:57,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:58:57,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:58:57,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75959556] [2024-06-14 12:58:57,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75959556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:58:57,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:58:57,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:58:57,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072495916] [2024-06-14 12:58:57,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:58:57,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:58:57,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:58:57,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:58:57,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:58:57,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:58:57,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 60 transitions, 466 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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) [2024-06-14 12:58:57,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:58:57,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:58:57,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:58:58,085 INFO L124 PetriNetUnfolderBase]: 155/310 cut-off events. [2024-06-14 12:58:58,086 INFO L125 PetriNetUnfolderBase]: For 2231/2231 co-relation queries the response was YES. [2024-06-14 12:58:58,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1397 conditions, 310 events. 155/310 cut-off events. For 2231/2231 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1202 event pairs, 30 based on Foata normal form. 2/312 useless extension candidates. Maximal degree in co-relation 1358. Up to 201 conditions per place. [2024-06-14 12:58:58,089 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 48 selfloop transitions, 28 changer transitions 0/79 dead transitions. [2024-06-14 12:58:58,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 79 transitions, 662 flow [2024-06-14 12:58:58,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:58:58,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:58:58,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-14 12:58:58,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 12:58:58,091 INFO L175 Difference]: Start difference. First operand has 77 places, 60 transitions, 466 flow. Second operand 8 states and 93 transitions. [2024-06-14 12:58:58,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 79 transitions, 662 flow [2024-06-14 12:58:58,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 79 transitions, 589 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-14 12:58:58,097 INFO L231 Difference]: Finished difference. Result has 77 places, 60 transitions, 457 flow [2024-06-14 12:58:58,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=457, PETRI_PLACES=77, PETRI_TRANSITIONS=60} [2024-06-14 12:58:58,098 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 47 predicate places. [2024-06-14 12:58:58,098 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 60 transitions, 457 flow [2024-06-14 12:58:58,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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) [2024-06-14 12:58:58,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:58:58,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:58:58,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 12:58:58,099 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:58:58,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:58:58,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1498549979, now seen corresponding path program 1 times [2024-06-14 12:58:58,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:58:58,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429234949] [2024-06-14 12:58:58,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:58:58,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:58:58,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:59:00,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:59:00,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:59:00,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429234949] [2024-06-14 12:59:00,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429234949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:59:00,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:59:00,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:59:00,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907738774] [2024-06-14 12:59:00,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:59:00,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:59:00,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:59:00,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:59:00,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:59:00,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:59:00,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 60 transitions, 457 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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) [2024-06-14 12:59:00,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:59:00,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:59:00,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:59:01,048 INFO L124 PetriNetUnfolderBase]: 159/318 cut-off events. [2024-06-14 12:59:01,049 INFO L125 PetriNetUnfolderBase]: For 2232/2232 co-relation queries the response was YES. [2024-06-14 12:59:01,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1415 conditions, 318 events. 159/318 cut-off events. For 2232/2232 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1242 event pairs, 18 based on Foata normal form. 2/320 useless extension candidates. Maximal degree in co-relation 1376. Up to 203 conditions per place. [2024-06-14 12:59:01,051 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 58 selfloop transitions, 20 changer transitions 0/81 dead transitions. [2024-06-14 12:59:01,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 81 transitions, 697 flow [2024-06-14 12:59:01,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:59:01,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:59:01,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-14 12:59:01,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-14 12:59:01,054 INFO L175 Difference]: Start difference. First operand has 77 places, 60 transitions, 457 flow. Second operand 8 states and 90 transitions. [2024-06-14 12:59:01,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 81 transitions, 697 flow [2024-06-14 12:59:01,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 81 transitions, 634 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-14 12:59:01,060 INFO L231 Difference]: Finished difference. Result has 77 places, 61 transitions, 448 flow [2024-06-14 12:59:01,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=448, PETRI_PLACES=77, PETRI_TRANSITIONS=61} [2024-06-14 12:59:01,061 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 47 predicate places. [2024-06-14 12:59:01,061 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 61 transitions, 448 flow [2024-06-14 12:59:01,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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) [2024-06-14 12:59:01,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:59:01,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:59:01,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 12:59:01,062 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:59:01,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:59:01,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1501406939, now seen corresponding path program 2 times [2024-06-14 12:59:01,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:59:01,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565529076] [2024-06-14 12:59:01,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:59:01,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:59:01,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:59:03,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:59:03,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:59:03,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565529076] [2024-06-14 12:59:03,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565529076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:59:03,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:59:03,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:59:03,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679248921] [2024-06-14 12:59:03,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:59:03,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:59:03,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:59:03,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:59:03,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:59:03,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:59:03,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 61 transitions, 448 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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) [2024-06-14 12:59:03,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:59:03,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:59:03,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:59:04,402 INFO L124 PetriNetUnfolderBase]: 163/326 cut-off events. [2024-06-14 12:59:04,403 INFO L125 PetriNetUnfolderBase]: For 2203/2203 co-relation queries the response was YES. [2024-06-14 12:59:04,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1425 conditions, 326 events. 163/326 cut-off events. For 2203/2203 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1293 event pairs, 32 based on Foata normal form. 2/328 useless extension candidates. Maximal degree in co-relation 1386. Up to 248 conditions per place. [2024-06-14 12:59:04,405 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 58 selfloop transitions, 19 changer transitions 0/80 dead transitions. [2024-06-14 12:59:04,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 80 transitions, 654 flow [2024-06-14 12:59:04,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:59:04,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:59:04,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-14 12:59:04,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-14 12:59:04,407 INFO L175 Difference]: Start difference. First operand has 77 places, 61 transitions, 448 flow. Second operand 8 states and 90 transitions. [2024-06-14 12:59:04,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 80 transitions, 654 flow [2024-06-14 12:59:04,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 80 transitions, 611 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-14 12:59:04,412 INFO L231 Difference]: Finished difference. Result has 80 places, 62 transitions, 459 flow [2024-06-14 12:59:04,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=459, PETRI_PLACES=80, PETRI_TRANSITIONS=62} [2024-06-14 12:59:04,413 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 50 predicate places. [2024-06-14 12:59:04,413 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 62 transitions, 459 flow [2024-06-14 12:59:04,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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) [2024-06-14 12:59:04,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:59:04,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:59:04,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 12:59:04,414 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:59:04,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:59:04,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1841991205, now seen corresponding path program 3 times [2024-06-14 12:59:04,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:59:04,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173488889] [2024-06-14 12:59:04,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:59:04,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:59:04,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:59:06,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:59:06,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:59:06,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173488889] [2024-06-14 12:59:06,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173488889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:59:06,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:59:06,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:59:06,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113765249] [2024-06-14 12:59:06,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:59:06,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:59:06,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:59:06,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:59:06,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:59:06,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:59:06,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 62 transitions, 459 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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) [2024-06-14 12:59:06,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:59:06,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:59:06,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:59:07,516 INFO L124 PetriNetUnfolderBase]: 167/334 cut-off events. [2024-06-14 12:59:07,516 INFO L125 PetriNetUnfolderBase]: For 2506/2506 co-relation queries the response was YES. [2024-06-14 12:59:07,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1460 conditions, 334 events. 167/334 cut-off events. For 2506/2506 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1335 event pairs, 32 based on Foata normal form. 2/336 useless extension candidates. Maximal degree in co-relation 1420. Up to 273 conditions per place. [2024-06-14 12:59:07,519 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 60 selfloop transitions, 14 changer transitions 0/77 dead transitions. [2024-06-14 12:59:07,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 77 transitions, 648 flow [2024-06-14 12:59:07,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:59:07,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:59:07,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-06-14 12:59:07,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34274193548387094 [2024-06-14 12:59:07,521 INFO L175 Difference]: Start difference. First operand has 80 places, 62 transitions, 459 flow. Second operand 8 states and 85 transitions. [2024-06-14 12:59:07,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 77 transitions, 648 flow [2024-06-14 12:59:07,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 77 transitions, 595 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-14 12:59:07,528 INFO L231 Difference]: Finished difference. Result has 81 places, 63 transitions, 449 flow [2024-06-14 12:59:07,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=449, PETRI_PLACES=81, PETRI_TRANSITIONS=63} [2024-06-14 12:59:07,528 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 51 predicate places. [2024-06-14 12:59:07,528 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 63 transitions, 449 flow [2024-06-14 12:59:07,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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) [2024-06-14 12:59:07,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:59:07,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:59:07,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 12:59:07,529 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:59:07,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:59:07,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1616882807, now seen corresponding path program 1 times [2024-06-14 12:59:07,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:59:07,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32302917] [2024-06-14 12:59:07,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:59:07,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:59:07,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:59:10,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:59:10,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:59:10,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32302917] [2024-06-14 12:59:10,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32302917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:59:10,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:59:10,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:59:10,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936030000] [2024-06-14 12:59:10,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:59:10,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:59:10,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:59:10,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:59:10,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:59:10,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:59:10,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 63 transitions, 449 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:59:10,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:59:10,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:59:10,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:59:11,217 INFO L124 PetriNetUnfolderBase]: 171/338 cut-off events. [2024-06-14 12:59:11,217 INFO L125 PetriNetUnfolderBase]: For 2745/2745 co-relation queries the response was YES. [2024-06-14 12:59:11,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1458 conditions, 338 events. 171/338 cut-off events. For 2745/2745 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1350 event pairs, 28 based on Foata normal form. 2/340 useless extension candidates. Maximal degree in co-relation 1418. Up to 272 conditions per place. [2024-06-14 12:59:11,219 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 62 selfloop transitions, 16 changer transitions 0/81 dead transitions. [2024-06-14 12:59:11,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 81 transitions, 651 flow [2024-06-14 12:59:11,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:59:11,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:59:11,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-14 12:59:11,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34050179211469533 [2024-06-14 12:59:11,220 INFO L175 Difference]: Start difference. First operand has 81 places, 63 transitions, 449 flow. Second operand 9 states and 95 transitions. [2024-06-14 12:59:11,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 81 transitions, 651 flow [2024-06-14 12:59:11,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 81 transitions, 619 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-14 12:59:11,225 INFO L231 Difference]: Finished difference. Result has 84 places, 64 transitions, 463 flow [2024-06-14 12:59:11,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=463, PETRI_PLACES=84, PETRI_TRANSITIONS=64} [2024-06-14 12:59:11,225 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 54 predicate places. [2024-06-14 12:59:11,226 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 64 transitions, 463 flow [2024-06-14 12:59:11,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:59:11,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:59:11,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:59:11,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 12:59:11,226 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:59:11,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:59:11,227 INFO L85 PathProgramCache]: Analyzing trace with hash -2052740517, now seen corresponding path program 4 times [2024-06-14 12:59:11,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:59:11,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017836490] [2024-06-14 12:59:11,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:59:11,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:59:11,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:59:13,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:59:13,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:59:13,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017836490] [2024-06-14 12:59:13,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017836490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:59:13,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:59:13,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:59:13,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915214371] [2024-06-14 12:59:13,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:59:13,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:59:13,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:59:13,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:59:13,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:59:13,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:59:13,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 64 transitions, 463 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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) [2024-06-14 12:59:13,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:59:13,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:59:13,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:59:14,491 INFO L124 PetriNetUnfolderBase]: 168/337 cut-off events. [2024-06-14 12:59:14,491 INFO L125 PetriNetUnfolderBase]: For 2688/2688 co-relation queries the response was YES. [2024-06-14 12:59:14,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1431 conditions, 337 events. 168/337 cut-off events. For 2688/2688 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1360 event pairs, 17 based on Foata normal form. 2/339 useless extension candidates. Maximal degree in co-relation 1390. Up to 234 conditions per place. [2024-06-14 12:59:14,494 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 59 selfloop transitions, 19 changer transitions 0/81 dead transitions. [2024-06-14 12:59:14,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 81 transitions, 659 flow [2024-06-14 12:59:14,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:59:14,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:59:14,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-06-14 12:59:14,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778801843317972 [2024-06-14 12:59:14,496 INFO L175 Difference]: Start difference. First operand has 84 places, 64 transitions, 463 flow. Second operand 7 states and 82 transitions. [2024-06-14 12:59:14,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 81 transitions, 659 flow [2024-06-14 12:59:14,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 81 transitions, 619 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-14 12:59:14,503 INFO L231 Difference]: Finished difference. Result has 84 places, 64 transitions, 469 flow [2024-06-14 12:59:14,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=469, PETRI_PLACES=84, PETRI_TRANSITIONS=64} [2024-06-14 12:59:14,504 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 54 predicate places. [2024-06-14 12:59:14,504 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 64 transitions, 469 flow [2024-06-14 12:59:14,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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) [2024-06-14 12:59:14,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:59:14,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:59:14,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 12:59:14,505 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:59:14,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:59:14,505 INFO L85 PathProgramCache]: Analyzing trace with hash -2052555819, now seen corresponding path program 2 times [2024-06-14 12:59:14,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:59:14,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197956293] [2024-06-14 12:59:14,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:59:14,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:59:14,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:59:17,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:59:17,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:59:17,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197956293] [2024-06-14 12:59:17,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197956293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:59:17,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:59:17,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:59:17,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114379172] [2024-06-14 12:59:17,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:59:17,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:59:17,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:59:17,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:59:17,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:59:17,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:59:17,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 64 transitions, 469 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:59:17,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:59:17,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:59:17,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:59:17,893 INFO L124 PetriNetUnfolderBase]: 172/341 cut-off events. [2024-06-14 12:59:17,893 INFO L125 PetriNetUnfolderBase]: For 3042/3042 co-relation queries the response was YES. [2024-06-14 12:59:17,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1476 conditions, 341 events. 172/341 cut-off events. For 3042/3042 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1370 event pairs, 27 based on Foata normal form. 2/343 useless extension candidates. Maximal degree in co-relation 1434. Up to 269 conditions per place. [2024-06-14 12:59:17,897 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 60 selfloop transitions, 16 changer transitions 0/79 dead transitions. [2024-06-14 12:59:17,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 79 transitions, 663 flow [2024-06-14 12:59:17,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:59:17,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:59:17,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-14 12:59:17,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35944700460829493 [2024-06-14 12:59:17,899 INFO L175 Difference]: Start difference. First operand has 84 places, 64 transitions, 469 flow. Second operand 7 states and 78 transitions. [2024-06-14 12:59:17,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 79 transitions, 663 flow [2024-06-14 12:59:17,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 79 transitions, 615 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-14 12:59:17,906 INFO L231 Difference]: Finished difference. Result has 84 places, 65 transitions, 471 flow [2024-06-14 12:59:17,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=471, PETRI_PLACES=84, PETRI_TRANSITIONS=65} [2024-06-14 12:59:17,907 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 54 predicate places. [2024-06-14 12:59:17,907 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 65 transitions, 471 flow [2024-06-14 12:59:17,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:59:17,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:59:17,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:59:17,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-14 12:59:17,908 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:59:17,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:59:17,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1816380459, now seen corresponding path program 3 times [2024-06-14 12:59:17,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:59:17,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684996808] [2024-06-14 12:59:17,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:59:17,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:59:17,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:59:20,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:59:20,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:59:20,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684996808] [2024-06-14 12:59:20,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684996808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:59:20,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:59:20,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:59:20,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686792396] [2024-06-14 12:59:20,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:59:20,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:59:20,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:59:20,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:59:20,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:59:20,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:59:20,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 65 transitions, 471 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 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) [2024-06-14 12:59:20,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:59:20,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:59:20,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:59:21,158 INFO L124 PetriNetUnfolderBase]: 176/354 cut-off events. [2024-06-14 12:59:21,158 INFO L125 PetriNetUnfolderBase]: For 2873/2875 co-relation queries the response was YES. [2024-06-14 12:59:21,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1501 conditions, 354 events. 176/354 cut-off events. For 2873/2875 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1472 event pairs, 32 based on Foata normal form. 4/358 useless extension candidates. Maximal degree in co-relation 1459. Up to 269 conditions per place. [2024-06-14 12:59:21,161 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 57 selfloop transitions, 17 changer transitions 0/77 dead transitions. [2024-06-14 12:59:21,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 77 transitions, 655 flow [2024-06-14 12:59:21,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:59:21,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:59:21,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 76 transitions. [2024-06-14 12:59:21,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35023041474654376 [2024-06-14 12:59:21,163 INFO L175 Difference]: Start difference. First operand has 84 places, 65 transitions, 471 flow. Second operand 7 states and 76 transitions. [2024-06-14 12:59:21,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 77 transitions, 655 flow [2024-06-14 12:59:21,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 77 transitions, 615 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-14 12:59:21,170 INFO L231 Difference]: Finished difference. Result has 86 places, 66 transitions, 483 flow [2024-06-14 12:59:21,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=483, PETRI_PLACES=86, PETRI_TRANSITIONS=66} [2024-06-14 12:59:21,170 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 56 predicate places. [2024-06-14 12:59:21,170 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 66 transitions, 483 flow [2024-06-14 12:59:21,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 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) [2024-06-14 12:59:21,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:59:21,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:59:21,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-14 12:59:21,171 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:59:21,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:59:21,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1816083789, now seen corresponding path program 4 times [2024-06-14 12:59:21,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:59:21,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604493660] [2024-06-14 12:59:21,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:59:21,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:59:21,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:59:23,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:59:23,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:59:23,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604493660] [2024-06-14 12:59:23,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604493660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:59:23,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:59:23,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:59:23,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965770749] [2024-06-14 12:59:23,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:59:23,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:59:23,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:59:23,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:59:23,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:59:23,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:59:23,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 66 transitions, 483 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 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) [2024-06-14 12:59:23,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:59:23,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:59:23,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:59:24,227 INFO L124 PetriNetUnfolderBase]: 173/349 cut-off events. [2024-06-14 12:59:24,227 INFO L125 PetriNetUnfolderBase]: For 2462/2464 co-relation queries the response was YES. [2024-06-14 12:59:24,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1438 conditions, 349 events. 173/349 cut-off events. For 2462/2464 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1437 event pairs, 31 based on Foata normal form. 4/353 useless extension candidates. Maximal degree in co-relation 1395. Up to 238 conditions per place. [2024-06-14 12:59:24,230 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 54 selfloop transitions, 20 changer transitions 0/77 dead transitions. [2024-06-14 12:59:24,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 77 transitions, 655 flow [2024-06-14 12:59:24,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:59:24,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:59:24,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-06-14 12:59:24,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34101382488479265 [2024-06-14 12:59:24,231 INFO L175 Difference]: Start difference. First operand has 86 places, 66 transitions, 483 flow. Second operand 7 states and 74 transitions. [2024-06-14 12:59:24,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 77 transitions, 655 flow [2024-06-14 12:59:24,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 77 transitions, 615 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-14 12:59:24,237 INFO L231 Difference]: Finished difference. Result has 88 places, 66 transitions, 487 flow [2024-06-14 12:59:24,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=487, PETRI_PLACES=88, PETRI_TRANSITIONS=66} [2024-06-14 12:59:24,238 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 58 predicate places. [2024-06-14 12:59:24,238 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 66 transitions, 487 flow [2024-06-14 12:59:24,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 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) [2024-06-14 12:59:24,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:59:24,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:59:24,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-14 12:59:24,239 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:59:24,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:59:24,239 INFO L85 PathProgramCache]: Analyzing trace with hash 843048149, now seen corresponding path program 1 times [2024-06-14 12:59:24,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:59:24,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646082107] [2024-06-14 12:59:24,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:59:24,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:59:24,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:59:26,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:59:26,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:59:26,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646082107] [2024-06-14 12:59:26,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646082107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:59:26,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:59:26,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:59:26,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962695812] [2024-06-14 12:59:26,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:59:26,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:59:26,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:59:26,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:59:26,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:59:26,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:59:26,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 66 transitions, 487 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:59:26,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:59:26,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:59:26,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:59:27,501 INFO L124 PetriNetUnfolderBase]: 289/580 cut-off events. [2024-06-14 12:59:27,501 INFO L125 PetriNetUnfolderBase]: For 5723/5725 co-relation queries the response was YES. [2024-06-14 12:59:27,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2430 conditions, 580 events. 289/580 cut-off events. For 5723/5725 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2822 event pairs, 53 based on Foata normal form. 10/590 useless extension candidates. Maximal degree in co-relation 2386. Up to 244 conditions per place. [2024-06-14 12:59:27,506 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 70 selfloop transitions, 47 changer transitions 12/132 dead transitions. [2024-06-14 12:59:27,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 132 transitions, 1109 flow [2024-06-14 12:59:27,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:59:27,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:59:27,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 148 transitions. [2024-06-14 12:59:27,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36724565756823824 [2024-06-14 12:59:27,509 INFO L175 Difference]: Start difference. First operand has 88 places, 66 transitions, 487 flow. Second operand 13 states and 148 transitions. [2024-06-14 12:59:27,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 132 transitions, 1109 flow [2024-06-14 12:59:27,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 132 transitions, 1034 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-14 12:59:27,520 INFO L231 Difference]: Finished difference. Result has 100 places, 87 transitions, 716 flow [2024-06-14 12:59:27,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=716, PETRI_PLACES=100, PETRI_TRANSITIONS=87} [2024-06-14 12:59:27,521 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 70 predicate places. [2024-06-14 12:59:27,521 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 87 transitions, 716 flow [2024-06-14 12:59:27,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:59:27,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:59:27,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:59:27,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-14 12:59:27,521 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:59:27,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:59:27,522 INFO L85 PathProgramCache]: Analyzing trace with hash -789589235, now seen corresponding path program 2 times [2024-06-14 12:59:27,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:59:27,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548137116] [2024-06-14 12:59:27,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:59:27,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:59:27,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:59:30,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:59:30,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:59:30,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548137116] [2024-06-14 12:59:30,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548137116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:59:30,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:59:30,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:59:30,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886030004] [2024-06-14 12:59:30,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:59:30,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:59:30,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:59:30,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:59:30,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:59:30,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:59:30,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 87 transitions, 716 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:59:30,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:59:30,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:59:30,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:59:31,143 INFO L124 PetriNetUnfolderBase]: 304/619 cut-off events. [2024-06-14 12:59:31,143 INFO L125 PetriNetUnfolderBase]: For 8436/8438 co-relation queries the response was YES. [2024-06-14 12:59:31,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2835 conditions, 619 events. 304/619 cut-off events. For 8436/8438 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3109 event pairs, 68 based on Foata normal form. 10/629 useless extension candidates. Maximal degree in co-relation 2785. Up to 250 conditions per place. [2024-06-14 12:59:31,149 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 52 selfloop transitions, 49 changer transitions 15/119 dead transitions. [2024-06-14 12:59:31,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 119 transitions, 1090 flow [2024-06-14 12:59:31,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:59:31,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:59:31,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-14 12:59:31,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-14 12:59:31,151 INFO L175 Difference]: Start difference. First operand has 100 places, 87 transitions, 716 flow. Second operand 11 states and 122 transitions. [2024-06-14 12:59:31,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 119 transitions, 1090 flow [2024-06-14 12:59:31,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 119 transitions, 1026 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-14 12:59:31,165 INFO L231 Difference]: Finished difference. Result has 102 places, 83 transitions, 723 flow [2024-06-14 12:59:31,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=723, PETRI_PLACES=102, PETRI_TRANSITIONS=83} [2024-06-14 12:59:31,166 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 72 predicate places. [2024-06-14 12:59:31,166 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 83 transitions, 723 flow [2024-06-14 12:59:31,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:59:31,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:59:31,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:59:31,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-14 12:59:31,167 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:59:31,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:59:31,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1724487149, now seen corresponding path program 3 times [2024-06-14 12:59:31,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:59:31,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670655013] [2024-06-14 12:59:31,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:59:31,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:59:31,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:59:34,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:59:34,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:59:34,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670655013] [2024-06-14 12:59:34,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670655013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:59:34,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:59:34,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:59:34,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397749626] [2024-06-14 12:59:34,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:59:34,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:59:34,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:59:34,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:59:34,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:59:34,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:59:34,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 83 transitions, 723 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:59:34,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:59:34,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:59:34,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:59:35,103 INFO L124 PetriNetUnfolderBase]: 352/727 cut-off events. [2024-06-14 12:59:35,103 INFO L125 PetriNetUnfolderBase]: For 13997/13999 co-relation queries the response was YES. [2024-06-14 12:59:35,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3470 conditions, 727 events. 352/727 cut-off events. For 13997/13999 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3912 event pairs, 89 based on Foata normal form. 18/745 useless extension candidates. Maximal degree in co-relation 3423. Up to 322 conditions per place. [2024-06-14 12:59:35,108 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 53 selfloop transitions, 47 changer transitions 9/112 dead transitions. [2024-06-14 12:59:35,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 112 transitions, 1069 flow [2024-06-14 12:59:35,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:59:35,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:59:35,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-14 12:59:35,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34139784946236557 [2024-06-14 12:59:35,109 INFO L175 Difference]: Start difference. First operand has 102 places, 83 transitions, 723 flow. Second operand 12 states and 127 transitions. [2024-06-14 12:59:35,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 112 transitions, 1069 flow [2024-06-14 12:59:35,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 112 transitions, 987 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-14 12:59:35,117 INFO L231 Difference]: Finished difference. Result has 101 places, 79 transitions, 707 flow [2024-06-14 12:59:35,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=707, PETRI_PLACES=101, PETRI_TRANSITIONS=79} [2024-06-14 12:59:35,118 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 71 predicate places. [2024-06-14 12:59:35,118 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 79 transitions, 707 flow [2024-06-14 12:59:35,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:59:35,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:59:35,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:59:35,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-14 12:59:35,119 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:59:35,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:59:35,119 INFO L85 PathProgramCache]: Analyzing trace with hash -700875605, now seen corresponding path program 4 times [2024-06-14 12:59:35,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:59:35,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680123366] [2024-06-14 12:59:35,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:59:35,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:59:35,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:59:38,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:59:38,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:59:38,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680123366] [2024-06-14 12:59:38,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680123366] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:59:38,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:59:38,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:59:38,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602269597] [2024-06-14 12:59:38,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:59:38,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:59:38,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:59:38,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:59:38,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:59:38,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:59:38,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 79 transitions, 707 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:59:38,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:59:38,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:59:38,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:59:38,883 INFO L124 PetriNetUnfolderBase]: 288/603 cut-off events. [2024-06-14 12:59:38,884 INFO L125 PetriNetUnfolderBase]: For 9889/9891 co-relation queries the response was YES. [2024-06-14 12:59:38,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2759 conditions, 603 events. 288/603 cut-off events. For 9889/9891 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3119 event pairs, 71 based on Foata normal form. 22/625 useless extension candidates. Maximal degree in co-relation 2713. Up to 322 conditions per place. [2024-06-14 12:59:38,887 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 39 selfloop transitions, 35 changer transitions 25/102 dead transitions. [2024-06-14 12:59:38,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 102 transitions, 973 flow [2024-06-14 12:59:38,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:59:38,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:59:38,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-14 12:59:38,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343108504398827 [2024-06-14 12:59:38,889 INFO L175 Difference]: Start difference. First operand has 101 places, 79 transitions, 707 flow. Second operand 11 states and 114 transitions. [2024-06-14 12:59:38,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 102 transitions, 973 flow [2024-06-14 12:59:38,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 102 transitions, 881 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 12:59:38,898 INFO L231 Difference]: Finished difference. Result has 99 places, 67 transitions, 575 flow [2024-06-14 12:59:38,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=575, PETRI_PLACES=99, PETRI_TRANSITIONS=67} [2024-06-14 12:59:38,899 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 69 predicate places. [2024-06-14 12:59:38,899 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 67 transitions, 575 flow [2024-06-14 12:59:38,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:59:38,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:59:38,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:59:38,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-14 12:59:38,899 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:59:38,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:59:38,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1416454251, now seen corresponding path program 5 times [2024-06-14 12:59:38,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:59:38,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996373401] [2024-06-14 12:59:38,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:59:38,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:59:38,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:59:41,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:59:41,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:59:41,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996373401] [2024-06-14 12:59:41,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996373401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:59:41,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:59:41,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:59:41,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933292635] [2024-06-14 12:59:41,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:59:41,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:59:41,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:59:41,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:59:41,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:59:41,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:59:41,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 67 transitions, 575 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:59:41,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:59:41,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:59:41,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:59:42,543 INFO L124 PetriNetUnfolderBase]: 254/524 cut-off events. [2024-06-14 12:59:42,543 INFO L125 PetriNetUnfolderBase]: For 8807/8807 co-relation queries the response was YES. [2024-06-14 12:59:42,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2365 conditions, 524 events. 254/524 cut-off events. For 8807/8807 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2617 event pairs, 70 based on Foata normal form. 20/542 useless extension candidates. Maximal degree in co-relation 2320. Up to 327 conditions per place. [2024-06-14 12:59:42,546 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 47 selfloop transitions, 24 changer transitions 14/88 dead transitions. [2024-06-14 12:59:42,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 88 transitions, 803 flow [2024-06-14 12:59:42,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:59:42,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:59:42,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 119 transitions. [2024-06-14 12:59:42,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31989247311827956 [2024-06-14 12:59:42,548 INFO L175 Difference]: Start difference. First operand has 99 places, 67 transitions, 575 flow. Second operand 12 states and 119 transitions. [2024-06-14 12:59:42,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 88 transitions, 803 flow [2024-06-14 12:59:42,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 88 transitions, 725 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 12:59:42,557 INFO L231 Difference]: Finished difference. Result has 94 places, 61 transitions, 492 flow [2024-06-14 12:59:42,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=492, PETRI_PLACES=94, PETRI_TRANSITIONS=61} [2024-06-14 12:59:42,558 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 64 predicate places. [2024-06-14 12:59:42,558 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 61 transitions, 492 flow [2024-06-14 12:59:42,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:59:42,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:59:42,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:59:42,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-14 12:59:42,558 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:59:42,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:59:42,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1421816631, now seen corresponding path program 6 times [2024-06-14 12:59:42,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:59:42,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480940924] [2024-06-14 12:59:42,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:59:42,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:59:42,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:59:45,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:59:45,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:59:45,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480940924] [2024-06-14 12:59:45,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480940924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:59:45,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:59:45,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:59:45,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182315511] [2024-06-14 12:59:45,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:59:45,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:59:45,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:59:45,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:59:45,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:59:45,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:59:45,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 61 transitions, 492 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:59:45,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:59:45,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:59:45,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:59:46,376 INFO L124 PetriNetUnfolderBase]: 227/475 cut-off events. [2024-06-14 12:59:46,376 INFO L125 PetriNetUnfolderBase]: For 6683/6683 co-relation queries the response was YES. [2024-06-14 12:59:46,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2039 conditions, 475 events. 227/475 cut-off events. For 6683/6683 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2296 event pairs, 73 based on Foata normal form. 20/493 useless extension candidates. Maximal degree in co-relation 1996. Up to 302 conditions per place. [2024-06-14 12:59:46,379 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 45 selfloop transitions, 18 changer transitions 14/80 dead transitions. [2024-06-14 12:59:46,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 80 transitions, 700 flow [2024-06-14 12:59:46,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:59:46,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:59:46,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-14 12:59:46,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3196480938416422 [2024-06-14 12:59:46,381 INFO L175 Difference]: Start difference. First operand has 94 places, 61 transitions, 492 flow. Second operand 11 states and 109 transitions. [2024-06-14 12:59:46,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 80 transitions, 700 flow [2024-06-14 12:59:46,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 80 transitions, 638 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-14 12:59:46,387 INFO L231 Difference]: Finished difference. Result has 90 places, 55 transitions, 409 flow [2024-06-14 12:59:46,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=409, PETRI_PLACES=90, PETRI_TRANSITIONS=55} [2024-06-14 12:59:46,387 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 60 predicate places. [2024-06-14 12:59:46,388 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 55 transitions, 409 flow [2024-06-14 12:59:46,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:59:46,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:59:46,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:59:46,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-14 12:59:46,388 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:59:46,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:59:46,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1421964501, now seen corresponding path program 7 times [2024-06-14 12:59:46,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:59:46,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801915235] [2024-06-14 12:59:46,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:59:46,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:59:46,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:59:49,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:59:49,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:59:49,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801915235] [2024-06-14 12:59:49,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801915235] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:59:49,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:59:49,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:59:49,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768329802] [2024-06-14 12:59:49,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:59:49,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:59:49,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:59:49,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:59:49,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:59:49,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:59:49,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 55 transitions, 409 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:59:49,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:59:49,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:59:49,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:59:49,995 INFO L124 PetriNetUnfolderBase]: 181/389 cut-off events. [2024-06-14 12:59:49,995 INFO L125 PetriNetUnfolderBase]: For 4458/4458 co-relation queries the response was YES. [2024-06-14 12:59:49,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1557 conditions, 389 events. 181/389 cut-off events. For 4458/4458 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1741 event pairs, 47 based on Foata normal form. 16/403 useless extension candidates. Maximal degree in co-relation 1516. Up to 236 conditions per place. [2024-06-14 12:59:49,998 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 43 selfloop transitions, 14 changer transitions 13/73 dead transitions. [2024-06-14 12:59:49,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 73 transitions, 595 flow [2024-06-14 12:59:50,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:59:50,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:59:50,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-14 12:59:50,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31085043988269795 [2024-06-14 12:59:50,000 INFO L175 Difference]: Start difference. First operand has 90 places, 55 transitions, 409 flow. Second operand 11 states and 106 transitions. [2024-06-14 12:59:50,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 73 transitions, 595 flow [2024-06-14 12:59:50,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 73 transitions, 544 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:59:50,004 INFO L231 Difference]: Finished difference. Result has 87 places, 50 transitions, 335 flow [2024-06-14 12:59:50,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=335, PETRI_PLACES=87, PETRI_TRANSITIONS=50} [2024-06-14 12:59:50,005 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 57 predicate places. [2024-06-14 12:59:50,005 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 50 transitions, 335 flow [2024-06-14 12:59:50,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:59:50,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:59:50,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:59:50,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-14 12:59:50,005 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:59:50,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:59:50,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1416239049, now seen corresponding path program 1 times [2024-06-14 12:59:50,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:59:50,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151742374] [2024-06-14 12:59:50,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:59:50,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:59:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:59:53,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:59:53,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:59:53,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151742374] [2024-06-14 12:59:53,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151742374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:59:53,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:59:53,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:59:53,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013071188] [2024-06-14 12:59:53,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:59:53,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:59:53,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:59:53,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:59:53,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:59:53,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:59:53,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 50 transitions, 335 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 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) [2024-06-14 12:59:53,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:59:53,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:59:53,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:59:53,790 INFO L124 PetriNetUnfolderBase]: 151/323 cut-off events. [2024-06-14 12:59:53,790 INFO L125 PetriNetUnfolderBase]: For 3281/3281 co-relation queries the response was YES. [2024-06-14 12:59:53,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1310 conditions, 323 events. 151/323 cut-off events. For 3281/3281 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1327 event pairs, 45 based on Foata normal form. 6/327 useless extension candidates. Maximal degree in co-relation 1270. Up to 224 conditions per place. [2024-06-14 12:59:53,792 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 35 selfloop transitions, 8 changer transitions 20/66 dead transitions. [2024-06-14 12:59:53,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 66 transitions, 499 flow [2024-06-14 12:59:53,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:59:53,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:59:53,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 97 transitions. [2024-06-14 12:59:53,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31290322580645163 [2024-06-14 12:59:53,796 INFO L175 Difference]: Start difference. First operand has 87 places, 50 transitions, 335 flow. Second operand 10 states and 97 transitions. [2024-06-14 12:59:53,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 66 transitions, 499 flow [2024-06-14 12:59:53,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 66 transitions, 461 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 12:59:53,800 INFO L231 Difference]: Finished difference. Result has 79 places, 42 transitions, 251 flow [2024-06-14 12:59:53,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=251, PETRI_PLACES=79, PETRI_TRANSITIONS=42} [2024-06-14 12:59:53,801 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 49 predicate places. [2024-06-14 12:59:53,801 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 42 transitions, 251 flow [2024-06-14 12:59:53,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 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) [2024-06-14 12:59:53,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:59:53,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:59:53,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-14 12:59:53,802 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:59:53,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:59:53,802 INFO L85 PathProgramCache]: Analyzing trace with hash -473225335, now seen corresponding path program 2 times [2024-06-14 12:59:53,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:59:53,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053878690] [2024-06-14 12:59:53,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:59:53,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:59:53,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:59:56,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:59:56,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:59:56,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053878690] [2024-06-14 12:59:56,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053878690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:59:56,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:59:56,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:59:56,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863193837] [2024-06-14 12:59:56,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:59:56,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:59:56,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:59:56,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:59:56,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:59:56,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:59:56,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 42 transitions, 251 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 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) [2024-06-14 12:59:56,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:59:56,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:59:56,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:59:57,545 INFO L124 PetriNetUnfolderBase]: 127/270 cut-off events. [2024-06-14 12:59:57,545 INFO L125 PetriNetUnfolderBase]: For 3134/3134 co-relation queries the response was YES. [2024-06-14 12:59:57,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1028 conditions, 270 events. 127/270 cut-off events. For 3134/3134 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1084 event pairs, 34 based on Foata normal form. 10/280 useless extension candidates. Maximal degree in co-relation 991. Up to 153 conditions per place. [2024-06-14 12:59:57,547 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 28 selfloop transitions, 16 changer transitions 11/58 dead transitions. [2024-06-14 12:59:57,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 58 transitions, 405 flow [2024-06-14 12:59:57,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:59:57,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:59:57,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-14 12:59:57,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-14 12:59:57,549 INFO L175 Difference]: Start difference. First operand has 79 places, 42 transitions, 251 flow. Second operand 10 states and 100 transitions. [2024-06-14 12:59:57,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 58 transitions, 405 flow [2024-06-14 12:59:57,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 58 transitions, 368 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 12:59:57,551 INFO L231 Difference]: Finished difference. Result has 68 places, 39 transitions, 235 flow [2024-06-14 12:59:57,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=235, PETRI_PLACES=68, PETRI_TRANSITIONS=39} [2024-06-14 12:59:57,552 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 38 predicate places. [2024-06-14 12:59:57,552 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 39 transitions, 235 flow [2024-06-14 12:59:57,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 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) [2024-06-14 12:59:57,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:59:57,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:59:57,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-14 12:59:57,552 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:59:57,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:59:57,553 INFO L85 PathProgramCache]: Analyzing trace with hash -43930823, now seen corresponding path program 3 times [2024-06-14 12:59:57,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:59:57,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913236811] [2024-06-14 12:59:57,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:59:57,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:59:57,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:00:00,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:00:00,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:00:00,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913236811] [2024-06-14 13:00:00,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913236811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:00:00,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:00:00,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:00:00,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657435871] [2024-06-14 13:00:00,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:00:00,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:00:00,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:00:00,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:00:00,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:00:00,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 13:00:00,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 39 transitions, 235 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 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) [2024-06-14 13:00:00,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:00:00,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 13:00:00,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:00:01,265 INFO L124 PetriNetUnfolderBase]: 109/240 cut-off events. [2024-06-14 13:00:01,266 INFO L125 PetriNetUnfolderBase]: For 2626/2626 co-relation queries the response was YES. [2024-06-14 13:00:01,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 944 conditions, 240 events. 109/240 cut-off events. For 2626/2626 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 931 event pairs, 30 based on Foata normal form. 6/246 useless extension candidates. Maximal degree in co-relation 910. Up to 143 conditions per place. [2024-06-14 13:00:01,267 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 25 selfloop transitions, 14 changer transitions 11/53 dead transitions. [2024-06-14 13:00:01,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 53 transitions, 367 flow [2024-06-14 13:00:01,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:00:01,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:00:01,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 96 transitions. [2024-06-14 13:00:01,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3096774193548387 [2024-06-14 13:00:01,268 INFO L175 Difference]: Start difference. First operand has 68 places, 39 transitions, 235 flow. Second operand 10 states and 96 transitions. [2024-06-14 13:00:01,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 53 transitions, 367 flow [2024-06-14 13:00:01,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 53 transitions, 329 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-14 13:00:01,271 INFO L231 Difference]: Finished difference. Result has 66 places, 36 transitions, 213 flow [2024-06-14 13:00:01,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=213, PETRI_PLACES=66, PETRI_TRANSITIONS=36} [2024-06-14 13:00:01,272 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 36 predicate places. [2024-06-14 13:00:01,272 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 36 transitions, 213 flow [2024-06-14 13:00:01,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 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) [2024-06-14 13:00:01,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:00:01,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:00:01,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-14 13:00:01,273 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:00:01,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:00:01,273 INFO L85 PathProgramCache]: Analyzing trace with hash -722309095, now seen corresponding path program 4 times [2024-06-14 13:00:01,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:00:01,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495096005] [2024-06-14 13:00:01,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:00:01,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:00:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:00:04,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:00:04,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:00:04,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495096005] [2024-06-14 13:00:04,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495096005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:00:04,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:00:04,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:00:04,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431239335] [2024-06-14 13:00:04,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:00:04,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:00:04,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:00:04,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:00:04,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:00:04,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 13:00:04,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 36 transitions, 213 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 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) [2024-06-14 13:00:04,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:00:04,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 13:00:04,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:00:04,880 INFO L124 PetriNetUnfolderBase]: 121/268 cut-off events. [2024-06-14 13:00:04,880 INFO L125 PetriNetUnfolderBase]: For 3490/3490 co-relation queries the response was YES. [2024-06-14 13:00:04,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1119 conditions, 268 events. 121/268 cut-off events. For 3490/3490 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1093 event pairs, 46 based on Foata normal form. 6/274 useless extension candidates. Maximal degree in co-relation 1086. Up to 120 conditions per place. [2024-06-14 13:00:04,882 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 29 selfloop transitions, 12 changer transitions 10/54 dead transitions. [2024-06-14 13:00:04,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 54 transitions, 393 flow [2024-06-14 13:00:04,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:00:04,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:00:04,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 98 transitions. [2024-06-14 13:00:04,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3161290322580645 [2024-06-14 13:00:04,885 INFO L175 Difference]: Start difference. First operand has 66 places, 36 transitions, 213 flow. Second operand 10 states and 98 transitions. [2024-06-14 13:00:04,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 54 transitions, 393 flow [2024-06-14 13:00:04,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 54 transitions, 349 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-14 13:00:04,889 INFO L231 Difference]: Finished difference. Result has 62 places, 32 transitions, 182 flow [2024-06-14 13:00:04,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=182, PETRI_PLACES=62, PETRI_TRANSITIONS=32} [2024-06-14 13:00:04,890 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 32 predicate places. [2024-06-14 13:00:04,890 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 32 transitions, 182 flow [2024-06-14 13:00:04,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 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) [2024-06-14 13:00:04,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:00:04,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:00:04,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-14 13:00:04,891 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:00:04,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:00:04,891 INFO L85 PathProgramCache]: Analyzing trace with hash 795273097, now seen corresponding path program 5 times [2024-06-14 13:00:04,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:00:04,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457688892] [2024-06-14 13:00:04,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:00:04,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:00:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:00:07,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:00:07,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:00:07,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457688892] [2024-06-14 13:00:07,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457688892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:00:07,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:00:07,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:00:07,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965894056] [2024-06-14 13:00:07,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:00:07,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:00:07,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:00:07,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:00:07,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:00:08,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 13:00:08,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 32 transitions, 182 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 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) [2024-06-14 13:00:08,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:00:08,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 13:00:08,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:00:08,836 INFO L124 PetriNetUnfolderBase]: 117/256 cut-off events. [2024-06-14 13:00:08,837 INFO L125 PetriNetUnfolderBase]: For 2974/2974 co-relation queries the response was YES. [2024-06-14 13:00:08,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1027 conditions, 256 events. 117/256 cut-off events. For 2974/2974 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1058 event pairs, 49 based on Foata normal form. 10/266 useless extension candidates. Maximal degree in co-relation 996. Up to 165 conditions per place. [2024-06-14 13:00:08,838 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 21 selfloop transitions, 10 changer transitions 11/45 dead transitions. [2024-06-14 13:00:08,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 45 transitions, 302 flow [2024-06-14 13:00:08,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:00:08,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:00:08,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-06-14 13:00:08,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3118279569892473 [2024-06-14 13:00:08,839 INFO L175 Difference]: Start difference. First operand has 62 places, 32 transitions, 182 flow. Second operand 9 states and 87 transitions. [2024-06-14 13:00:08,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 45 transitions, 302 flow [2024-06-14 13:00:08,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 45 transitions, 265 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-14 13:00:08,841 INFO L231 Difference]: Finished difference. Result has 54 places, 29 transitions, 150 flow [2024-06-14 13:00:08,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=150, PETRI_PLACES=54, PETRI_TRANSITIONS=29} [2024-06-14 13:00:08,842 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 24 predicate places. [2024-06-14 13:00:08,842 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 29 transitions, 150 flow [2024-06-14 13:00:08,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 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) [2024-06-14 13:00:08,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:00:08,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:00:08,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-14 13:00:08,842 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:00:08,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:00:08,843 INFO L85 PathProgramCache]: Analyzing trace with hash 795280537, now seen corresponding path program 6 times [2024-06-14 13:00:08,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:00:08,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285124720] [2024-06-14 13:00:08,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:00:08,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:00:08,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:00:12,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:00:12,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:00:12,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285124720] [2024-06-14 13:00:12,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285124720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:00:12,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:00:12,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:00:12,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007873915] [2024-06-14 13:00:12,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:00:12,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:00:12,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:00:12,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:00:12,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:00:12,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 13:00:12,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 29 transitions, 150 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 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) [2024-06-14 13:00:12,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:00:12,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 13:00:12,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:00:12,687 INFO L124 PetriNetUnfolderBase]: 84/189 cut-off events. [2024-06-14 13:00:12,687 INFO L125 PetriNetUnfolderBase]: For 1273/1273 co-relation queries the response was YES. [2024-06-14 13:00:12,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 697 conditions, 189 events. 84/189 cut-off events. For 1273/1273 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 681 event pairs, 32 based on Foata normal form. 6/195 useless extension candidates. Maximal degree in co-relation 670. Up to 71 conditions per place. [2024-06-14 13:00:12,688 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 26 selfloop transitions, 8 changer transitions 7/44 dead transitions. [2024-06-14 13:00:12,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 44 transitions, 290 flow [2024-06-14 13:00:12,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:00:12,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:00:12,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2024-06-14 13:00:12,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30824372759856633 [2024-06-14 13:00:12,689 INFO L175 Difference]: Start difference. First operand has 54 places, 29 transitions, 150 flow. Second operand 9 states and 86 transitions. [2024-06-14 13:00:12,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 44 transitions, 290 flow [2024-06-14 13:00:12,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 44 transitions, 262 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-14 13:00:12,690 INFO L231 Difference]: Finished difference. Result has 52 places, 26 transitions, 128 flow [2024-06-14 13:00:12,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=128, PETRI_PLACES=52, PETRI_TRANSITIONS=26} [2024-06-14 13:00:12,691 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 22 predicate places. [2024-06-14 13:00:12,691 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 26 transitions, 128 flow [2024-06-14 13:00:12,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 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) [2024-06-14 13:00:12,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:00:12,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:00:12,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-14 13:00:12,691 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:00:12,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:00:12,692 INFO L85 PathProgramCache]: Analyzing trace with hash 789708907, now seen corresponding path program 7 times [2024-06-14 13:00:12,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:00:12,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633432531] [2024-06-14 13:00:12,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:00:12,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:00:12,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:00:15,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:00:15,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:00:15,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633432531] [2024-06-14 13:00:15,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633432531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:00:15,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:00:15,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:00:15,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966165208] [2024-06-14 13:00:15,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:00:15,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:00:15,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:00:15,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:00:15,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:00:15,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 13:00:15,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 26 transitions, 128 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 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) [2024-06-14 13:00:15,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:00:15,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 13:00:15,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:00:16,382 INFO L124 PetriNetUnfolderBase]: 55/126 cut-off events. [2024-06-14 13:00:16,382 INFO L125 PetriNetUnfolderBase]: For 789/789 co-relation queries the response was YES. [2024-06-14 13:00:16,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 430 conditions, 126 events. 55/126 cut-off events. For 789/789 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 350 event pairs, 23 based on Foata normal form. 10/136 useless extension candidates. Maximal degree in co-relation 404. Up to 57 conditions per place. [2024-06-14 13:00:16,383 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 17 selfloop transitions, 5 changer transitions 11/36 dead transitions. [2024-06-14 13:00:16,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 36 transitions, 218 flow [2024-06-14 13:00:16,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:00:16,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:00:16,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 74 transitions. [2024-06-14 13:00:16,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29838709677419356 [2024-06-14 13:00:16,383 INFO L175 Difference]: Start difference. First operand has 52 places, 26 transitions, 128 flow. Second operand 8 states and 74 transitions. [2024-06-14 13:00:16,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 36 transitions, 218 flow [2024-06-14 13:00:16,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 36 transitions, 196 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-14 13:00:16,384 INFO L231 Difference]: Finished difference. Result has 48 places, 22 transitions, 93 flow [2024-06-14 13:00:16,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=93, PETRI_PLACES=48, PETRI_TRANSITIONS=22} [2024-06-14 13:00:16,385 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 18 predicate places. [2024-06-14 13:00:16,385 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 22 transitions, 93 flow [2024-06-14 13:00:16,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 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) [2024-06-14 13:00:16,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:00:16,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:00:16,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-14 13:00:16,386 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:00:16,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:00:16,386 INFO L85 PathProgramCache]: Analyzing trace with hash -139487673, now seen corresponding path program 8 times [2024-06-14 13:00:16,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:00:16,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341797605] [2024-06-14 13:00:16,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:00:16,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:00:16,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:00:19,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:00:19,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:00:19,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341797605] [2024-06-14 13:00:19,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341797605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:00:19,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:00:19,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:00:19,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340199183] [2024-06-14 13:00:19,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:00:19,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:00:19,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:00:19,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:00:19,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:00:19,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 13:00:19,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 22 transitions, 93 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:00:19,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:00:19,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 13:00:19,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:00:19,673 INFO L124 PetriNetUnfolderBase]: 21/60 cut-off events. [2024-06-14 13:00:19,674 INFO L125 PetriNetUnfolderBase]: For 221/221 co-relation queries the response was YES. [2024-06-14 13:00:19,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 60 events. 21/60 cut-off events. For 221/221 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 88 event pairs, 1 based on Foata normal form. 8/68 useless extension candidates. Maximal degree in co-relation 156. Up to 32 conditions per place. [2024-06-14 13:00:19,674 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2024-06-14 13:00:19,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 26 transitions, 133 flow [2024-06-14 13:00:19,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:00:19,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:00:19,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 64 transitions. [2024-06-14 13:00:19,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25806451612903225 [2024-06-14 13:00:19,675 INFO L175 Difference]: Start difference. First operand has 48 places, 22 transitions, 93 flow. Second operand 8 states and 64 transitions. [2024-06-14 13:00:19,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 26 transitions, 133 flow [2024-06-14 13:00:19,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 26 transitions, 107 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-14 13:00:19,675 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2024-06-14 13:00:19,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2024-06-14 13:00:19,676 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2024-06-14 13:00:19,676 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2024-06-14 13:00:19,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:00:19,678 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-14 13:00:19,679 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-14 13:00:19,679 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-14 13:00:19,679 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-14 13:00:19,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-14 13:00:19,680 INFO L445 BasicCegarLoop]: Path program histogram: [8, 7, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2024-06-14 13:00:19,683 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-14 13:00:19,683 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-14 13:00:19,687 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-14 13:00:19,687 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-14 13:00:19,688 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.06 01:00:19 BasicIcfg [2024-06-14 13:00:19,688 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-14 13:00:19,688 INFO L158 Benchmark]: Toolchain (without parser) took 137733.88ms. Allocated memory was 146.8MB in the beginning and 673.2MB in the end (delta: 526.4MB). Free memory was 64.1MB in the beginning and 434.5MB in the end (delta: -370.4MB). Peak memory consumption was 160.2MB. Max. memory is 16.1GB. [2024-06-14 13:00:19,688 INFO L158 Benchmark]: Witness Parser took 0.13ms. Allocated memory is still 146.8MB. Free memory is still 97.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 13:00:19,689 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 146.8MB. Free memory is still 109.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 13:00:19,689 INFO L158 Benchmark]: CACSL2BoogieTranslator took 784.29ms. Allocated memory was 146.8MB in the beginning and 186.6MB in the end (delta: 39.8MB). Free memory was 63.9MB in the beginning and 132.8MB in the end (delta: -68.9MB). Peak memory consumption was 18.3MB. Max. memory is 16.1GB. [2024-06-14 13:00:19,689 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.43ms. Allocated memory is still 186.6MB. Free memory was 132.8MB in the beginning and 129.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 13:00:19,690 INFO L158 Benchmark]: Boogie Preprocessor took 70.38ms. Allocated memory is still 186.6MB. Free memory was 129.7MB in the beginning and 125.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-14 13:00:19,690 INFO L158 Benchmark]: RCFGBuilder took 965.74ms. Allocated memory is still 186.6MB. Free memory was 125.5MB in the beginning and 111.2MB in the end (delta: 14.3MB). Peak memory consumption was 77.6MB. Max. memory is 16.1GB. [2024-06-14 13:00:19,690 INFO L158 Benchmark]: TraceAbstraction took 135827.91ms. Allocated memory was 186.6MB in the beginning and 673.2MB in the end (delta: 486.5MB). Free memory was 110.2MB in the beginning and 434.5MB in the end (delta: -324.4MB). Peak memory consumption was 163.2MB. Max. memory is 16.1GB. [2024-06-14 13:00:19,692 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.13ms. Allocated memory is still 146.8MB. Free memory is still 97.0MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.18ms. Allocated memory is still 146.8MB. Free memory is still 109.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 784.29ms. Allocated memory was 146.8MB in the beginning and 186.6MB in the end (delta: 39.8MB). Free memory was 63.9MB in the beginning and 132.8MB in the end (delta: -68.9MB). Peak memory consumption was 18.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.43ms. Allocated memory is still 186.6MB. Free memory was 132.8MB in the beginning and 129.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.38ms. Allocated memory is still 186.6MB. Free memory was 129.7MB in the beginning and 125.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 965.74ms. Allocated memory is still 186.6MB. Free memory was 125.5MB in the beginning and 111.2MB in the end (delta: 14.3MB). Peak memory consumption was 77.6MB. Max. memory is 16.1GB. * TraceAbstraction took 135827.91ms. Allocated memory was 186.6MB in the beginning and 673.2MB in the end (delta: 486.5MB). Free memory was 110.2MB in the beginning and 434.5MB in the end (delta: -324.4MB). Peak memory consumption was 163.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 815]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 816]: 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, 48 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: 135.7s, OverallIterations: 41, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 29.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1227 SdHoareTripleChecker+Valid, 8.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1137 mSDsluCounter, 313 SdHoareTripleChecker+Invalid, 7.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 208 mSDsCounter, 365 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7040 IncrementalHoareTripleChecker+Invalid, 7405 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 365 mSolverCounterUnsat, 105 mSDtfsCounter, 7040 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 428 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 423 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 47.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=723occurred in iteration=28, InterpolantAutomatonStates: 342, 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: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 105.4s InterpolantComputationTime, 654 NumberOfCodeBlocks, 654 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 613 ConstructedInterpolants, 0 QuantifiedInterpolants, 72697 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 41 InterpolantComputations, 41 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! [2024-06-14 13:00:19,736 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE