./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix045_power.oepc_pso.oepc_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/protection/mix045_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 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/mix045_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-05-07_14-17-48.files/protection/mix045_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-b44c828-m [2024-05-12 13:24:42,465 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 13:24:42,518 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 13:24:42,521 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 13:24:42,521 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 13:24:42,548 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 13:24:42,550 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 13:24:42,551 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 13:24:42,551 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 13:24:42,551 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 13:24:42,552 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 13:24:42,552 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 13:24:42,552 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 13:24:42,553 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 13:24:42,553 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 13:24:42,553 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 13:24:42,553 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 13:24:42,554 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 13:24:42,554 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 13:24:42,554 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 13:24:42,554 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 13:24:42,556 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 13:24:42,556 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 13:24:42,557 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 13:24:42,557 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 13:24:42,557 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 13:24:42,557 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 13:24:42,557 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 13:24:42,558 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 13:24:42,558 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 13:24:42,558 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 13:24:42,558 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 13:24:42,558 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:24:42,559 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 13:24:42,559 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 13:24:42,559 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 13:24:42,559 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 13:24:42,559 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 13:24:42,559 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 13:24:42,560 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 13:24:42,560 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 13:24:42,560 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 13:24:42,560 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 13:24:42,560 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 13:24:42,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 13:24:42,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 13:24:42,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 13:24:42,768 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 13:24:42,769 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 13:24:42,770 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/mix045_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-05-12 13:24:42,880 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 13:24:42,880 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 13:24:42,881 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix045_power.oepc_pso.oepc_rmo.oepc.i [2024-05-12 13:24:43,838 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 13:24:44,067 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 13:24:44,067 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix045_power.oepc_pso.oepc_rmo.oepc.i [2024-05-12 13:24:44,086 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b5f23f93/3d0e770ec51847a899c2d3d9e585336e/FLAGb32da0d67 [2024-05-12 13:24:44,099 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b5f23f93/3d0e770ec51847a899c2d3d9e585336e [2024-05-12 13:24:44,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 13:24:44,101 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 13:24:44,103 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 13:24:44,104 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 13:24:44,107 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 13:24:44,108 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:24:42" (1/2) ... [2024-05-12 13:24:44,109 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b5df9f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:24:44, skipping insertion in model container [2024-05-12 13:24:44,109 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:24:42" (1/2) ... [2024-05-12 13:24:44,110 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6260dd0c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:24:44, skipping insertion in model container [2024-05-12 13:24:44,110 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:24:44" (2/2) ... [2024-05-12 13:24:44,112 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b5df9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:24:44, skipping insertion in model container [2024-05-12 13:24:44,112 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:24:44" (2/2) ... [2024-05-12 13:24:44,112 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 13:24:44,174 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 13:24:44,175 INFO L97 edCorrectnessWitness]: Location invariant before [L844-L844] ((((((((((((((((((! multithreaded || a$r_buff1_thd2 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= a$w_buff1 && a$w_buff1 <= 1) && (a$w_buff1 == 0 || a$w_buff1 == 1)))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= a$mem_tmp && a$mem_tmp <= 1) && (a$mem_tmp == 0 || a$mem_tmp == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= a$w_buff0 && a$w_buff0 <= 1) && (a$w_buff0 == 0 || a$w_buff0 == 1)))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2))) [2024-05-12 13:24:44,175 INFO L97 edCorrectnessWitness]: Location invariant before [L846-L846] ((((((((((((((((((! multithreaded || a$r_buff1_thd2 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= a$w_buff1 && a$w_buff1 <= 1) && (a$w_buff1 == 0 || a$w_buff1 == 1)))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= a$mem_tmp && a$mem_tmp <= 1) && (a$mem_tmp == 0 || a$mem_tmp == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= a$w_buff0 && a$w_buff0 <= 1) && (a$w_buff0 == 0 || a$w_buff0 == 1)))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2))) [2024-05-12 13:24:44,175 INFO L97 edCorrectnessWitness]: Location invariant before [L847-L847] ((((((((((((((((((! multithreaded || a$r_buff1_thd2 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= a$w_buff1 && a$w_buff1 <= 1) && (a$w_buff1 == 0 || a$w_buff1 == 1)))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= a$mem_tmp && a$mem_tmp <= 1) && (a$mem_tmp == 0 || a$mem_tmp == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= a$w_buff0 && a$w_buff0 <= 1) && (a$w_buff0 == 0 || a$w_buff0 == 1)))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2))) [2024-05-12 13:24:44,175 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 13:24:44,175 INFO L106 edCorrectnessWitness]: ghost_update [L842-L842] multithreaded = 1; [2024-05-12 13:24:44,212 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 13:24:44,357 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix045_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-05-12 13:24:44,518 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:24:44,525 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-05-12 13:24:44,552 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix045_power.oepc_pso.oepc_rmo.oepc.i[969,982] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 13:24:44,618 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:24:44,657 INFO L206 MainTranslator]: Completed translation [2024-05-12 13:24:44,658 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:24:44 WrapperNode [2024-05-12 13:24:44,658 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 13:24:44,659 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 13:24:44,659 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 13:24:44,659 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 13:24:44,664 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:24:44" (1/1) ... [2024-05-12 13:24:44,691 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:24:44" (1/1) ... [2024-05-12 13:24:44,716 INFO L138 Inliner]: procedures = 176, calls = 58, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 134 [2024-05-12 13:24:44,717 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 13:24:44,717 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 13:24:44,717 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 13:24:44,717 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 13:24:44,733 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:24:44" (1/1) ... [2024-05-12 13:24:44,733 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:24:44" (1/1) ... [2024-05-12 13:24:44,737 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:24:44" (1/1) ... [2024-05-12 13:24:44,750 INFO L175 MemorySlicer]: Split 5 memory accesses to 4 slices as follows [2, 1, 1, 1]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-05-12 13:24:44,751 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:24:44" (1/1) ... [2024-05-12 13:24:44,751 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:24:44" (1/1) ... [2024-05-12 13:24:44,761 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:24:44" (1/1) ... [2024-05-12 13:24:44,762 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:24:44" (1/1) ... [2024-05-12 13:24:44,781 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:24:44" (1/1) ... [2024-05-12 13:24:44,782 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:24:44" (1/1) ... [2024-05-12 13:24:44,785 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 13:24:44,786 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 13:24:44,786 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 13:24:44,786 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 13:24:44,787 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:24:44" (1/1) ... [2024-05-12 13:24:44,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:24:44,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 13:24:44,822 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) [2024-05-12 13:24:44,825 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 [2024-05-12 13:24:44,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 13:24:44,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 13:24:44,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 13:24:44,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 13:24:44,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 13:24:44,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 13:24:44,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 13:24:44,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 13:24:44,854 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-05-12 13:24:44,855 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-05-12 13:24:44,855 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-05-12 13:24:44,855 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-05-12 13:24:44,856 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-05-12 13:24:44,856 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-05-12 13:24:44,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 13:24:44,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 13:24:44,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 13:24:44,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 13:24:44,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 13:24:44,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 13:24:44,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 13:24:44,861 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 13:24:45,000 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 13:24:45,002 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 13:24:45,306 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 13:24:45,306 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 13:24:45,441 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 13:24:45,441 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 13:24:45,442 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:24:45 BoogieIcfgContainer [2024-05-12 13:24:45,442 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 13:24:45,444 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 13:24:45,444 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 13:24:45,447 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 13:24:45,447 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:24:42" (1/4) ... [2024-05-12 13:24:45,448 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@accd8f9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:24:45, skipping insertion in model container [2024-05-12 13:24:45,448 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 01:24:44" (2/4) ... [2024-05-12 13:24:45,449 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@accd8f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:24:45, skipping insertion in model container [2024-05-12 13:24:45,449 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:24:44" (3/4) ... [2024-05-12 13:24:45,449 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@accd8f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:24:45, skipping insertion in model container [2024-05-12 13:24:45,449 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:24:45" (4/4) ... [2024-05-12 13:24:45,450 INFO L112 eAbstractionObserver]: Analyzing ICFG mix045_power.oepc_pso.oepc_rmo.oepc.i [2024-05-12 13:24:45,463 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 13:24:45,464 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-05-12 13:24:45,464 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 13:24:45,507 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 13:24:45,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 49 transitions, 110 flow [2024-05-12 13:24:45,591 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2024-05-12 13:24:45,591 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:24:45,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 46 events. 1/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 75 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2024-05-12 13:24:45,594 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 49 transitions, 110 flow [2024-05-12 13:24:45,598 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 46 transitions, 101 flow [2024-05-12 13:24:45,607 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 13:24:45,614 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;@d37f253, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 13:24:45,614 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-05-12 13:24:45,618 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 13:24:45,618 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 13:24:45,618 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:24:45,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:45,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 13:24:45,620 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:24:45,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:45,627 INFO L85 PathProgramCache]: Analyzing trace with hash -2083500291, now seen corresponding path program 1 times [2024-05-12 13:24:45,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:45,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116880630] [2024-05-12 13:24:45,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:45,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:45,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:45,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:45,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:45,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116880630] [2024-05-12 13:24:45,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116880630] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:45,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:45,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:24:45,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436351975] [2024-05-12 13:24:45,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:46,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:24:46,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:46,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:24:46,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:24:46,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 49 [2024-05-12 13:24:46,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:46,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:46,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 49 [2024-05-12 13:24:46,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:46,315 INFO L124 PetriNetUnfolderBase]: 637/1223 cut-off events. [2024-05-12 13:24:46,316 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-05-12 13:24:46,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2238 conditions, 1223 events. 637/1223 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 7544 event pairs, 489 based on Foata normal form. 36/1202 useless extension candidates. Maximal degree in co-relation 2223. Up to 793 conditions per place. [2024-05-12 13:24:46,326 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 35 selfloop transitions, 2 changer transitions 2/60 dead transitions. [2024-05-12 13:24:46,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 60 transitions, 213 flow [2024-05-12 13:24:46,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:24:46,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:24:46,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2024-05-12 13:24:46,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7755102040816326 [2024-05-12 13:24:46,338 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 101 flow. Second operand 3 states and 114 transitions. [2024-05-12 13:24:46,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 60 transitions, 213 flow [2024-05-12 13:24:46,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 60 transitions, 208 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-05-12 13:24:46,345 INFO L231 Difference]: Finished difference. Result has 53 places, 43 transitions, 96 flow [2024-05-12 13:24:46,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=53, PETRI_TRANSITIONS=43} [2024-05-12 13:24:46,349 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -2 predicate places. [2024-05-12 13:24:46,349 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 96 flow [2024-05-12 13:24:46,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:46,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:46,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 13:24:46,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 13:24:46,350 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:24:46,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:46,351 INFO L85 PathProgramCache]: Analyzing trace with hash -2083500349, now seen corresponding path program 1 times [2024-05-12 13:24:46,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:46,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492629713] [2024-05-12 13:24:46,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:46,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:46,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:46,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:46,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:46,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492629713] [2024-05-12 13:24:46,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492629713] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:46,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:46,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:24:46,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981096366] [2024-05-12 13:24:46,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:46,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:24:46,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:46,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:24:46,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:24:47,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-05-12 13:24:47,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2024-05-12 13:24:47,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:47,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-05-12 13:24:47,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:47,603 INFO L124 PetriNetUnfolderBase]: 3819/5688 cut-off events. [2024-05-12 13:24:47,603 INFO L125 PetriNetUnfolderBase]: For 277/277 co-relation queries the response was YES. [2024-05-12 13:24:47,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11554 conditions, 5688 events. 3819/5688 cut-off events. For 277/277 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 31558 event pairs, 2393 based on Foata normal form. 1/5609 useless extension candidates. Maximal degree in co-relation 11540. Up to 5486 conditions per place. [2024-05-12 13:24:47,630 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 42 selfloop transitions, 4 changer transitions 0/56 dead transitions. [2024-05-12 13:24:47,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 56 transitions, 220 flow [2024-05-12 13:24:47,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:24:47,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:24:47,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2024-05-12 13:24:47,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5986394557823129 [2024-05-12 13:24:47,636 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 96 flow. Second operand 3 states and 88 transitions. [2024-05-12 13:24:47,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 56 transitions, 220 flow [2024-05-12 13:24:47,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 56 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 13:24:47,639 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 122 flow [2024-05-12 13:24:47,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2024-05-12 13:24:47,644 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -2 predicate places. [2024-05-12 13:24:47,644 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 122 flow [2024-05-12 13:24:47,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2024-05-12 13:24:47,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:47,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:47,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 13:24:47,644 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:24:47,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:47,646 INFO L85 PathProgramCache]: Analyzing trace with hash -789038975, now seen corresponding path program 1 times [2024-05-12 13:24:47,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:47,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864620671] [2024-05-12 13:24:47,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:47,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:47,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:48,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:48,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:48,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864620671] [2024-05-12 13:24:48,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864620671] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:48,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:48,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 13:24:48,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778418859] [2024-05-12 13:24:48,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:48,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 13:24:48,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:48,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 13:24:48,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 13:24:48,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-05-12 13:24:48,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 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) [2024-05-12 13:24:48,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:48,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-05-12 13:24:48,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:48,989 INFO L124 PetriNetUnfolderBase]: 3818/6211 cut-off events. [2024-05-12 13:24:48,990 INFO L125 PetriNetUnfolderBase]: For 848/848 co-relation queries the response was YES. [2024-05-12 13:24:48,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12878 conditions, 6211 events. 3818/6211 cut-off events. For 848/848 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 39024 event pairs, 2370 based on Foata normal form. 3/5996 useless extension candidates. Maximal degree in co-relation 12863. Up to 5467 conditions per place. [2024-05-12 13:24:49,018 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 53 selfloop transitions, 8 changer transitions 0/71 dead transitions. [2024-05-12 13:24:49,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 71 transitions, 315 flow [2024-05-12 13:24:49,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 13:24:49,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 13:24:49,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-05-12 13:24:49,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.576530612244898 [2024-05-12 13:24:49,023 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 122 flow. Second operand 4 states and 113 transitions. [2024-05-12 13:24:49,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 71 transitions, 315 flow [2024-05-12 13:24:49,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 71 transitions, 308 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 13:24:49,026 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 187 flow [2024-05-12 13:24:49,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=187, PETRI_PLACES=57, PETRI_TRANSITIONS=53} [2024-05-12 13:24:49,027 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2024-05-12 13:24:49,027 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 187 flow [2024-05-12 13:24:49,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 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) [2024-05-12 13:24:49,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:49,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:49,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 13:24:49,028 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:24:49,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:49,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1309596782, now seen corresponding path program 1 times [2024-05-12 13:24:49,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:49,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095354037] [2024-05-12 13:24:49,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:49,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:49,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:49,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:49,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:49,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095354037] [2024-05-12 13:24:49,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095354037] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:49,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:49,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 13:24:49,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394078159] [2024-05-12 13:24:49,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:49,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 13:24:49,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:49,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 13:24:49,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-05-12 13:24:49,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-05-12 13:24:49,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 187 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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) [2024-05-12 13:24:49,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:49,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-05-12 13:24:49,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:50,443 INFO L124 PetriNetUnfolderBase]: 3850/6335 cut-off events. [2024-05-12 13:24:50,443 INFO L125 PetriNetUnfolderBase]: For 2557/2557 co-relation queries the response was YES. [2024-05-12 13:24:50,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14410 conditions, 6335 events. 3850/6335 cut-off events. For 2557/2557 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 40111 event pairs, 2344 based on Foata normal form. 5/6130 useless extension candidates. Maximal degree in co-relation 14392. Up to 5419 conditions per place. [2024-05-12 13:24:50,474 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 69 selfloop transitions, 18 changer transitions 0/97 dead transitions. [2024-05-12 13:24:50,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 97 transitions, 503 flow [2024-05-12 13:24:50,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:24:50,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:24:50,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 147 transitions. [2024-05-12 13:24:50,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-05-12 13:24:50,475 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 187 flow. Second operand 5 states and 147 transitions. [2024-05-12 13:24:50,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 97 transitions, 503 flow [2024-05-12 13:24:50,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 97 transitions, 492 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-05-12 13:24:50,480 INFO L231 Difference]: Finished difference. Result has 63 places, 65 transitions, 301 flow [2024-05-12 13:24:50,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=301, PETRI_PLACES=63, PETRI_TRANSITIONS=65} [2024-05-12 13:24:50,481 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 8 predicate places. [2024-05-12 13:24:50,481 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 65 transitions, 301 flow [2024-05-12 13:24:50,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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) [2024-05-12 13:24:50,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:50,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:50,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 13:24:50,482 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:24:50,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:50,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1970501470, now seen corresponding path program 1 times [2024-05-12 13:24:50,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:50,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018824548] [2024-05-12 13:24:50,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:50,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:50,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:51,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:51,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:51,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018824548] [2024-05-12 13:24:51,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018824548] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:51,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:51,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:24:51,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377991372] [2024-05-12 13:24:51,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:51,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:24:51,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:51,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:24:51,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:24:51,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-05-12 13:24:51,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 65 transitions, 301 flow. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:51,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:51,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-05-12 13:24:51,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:52,067 INFO L124 PetriNetUnfolderBase]: 3872/6277 cut-off events. [2024-05-12 13:24:52,067 INFO L125 PetriNetUnfolderBase]: For 6413/6416 co-relation queries the response was YES. [2024-05-12 13:24:52,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16676 conditions, 6277 events. 3872/6277 cut-off events. For 6413/6416 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 39199 event pairs, 1599 based on Foata normal form. 7/6075 useless extension candidates. Maximal degree in co-relation 16654. Up to 5412 conditions per place. [2024-05-12 13:24:52,101 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 79 selfloop transitions, 22 changer transitions 0/111 dead transitions. [2024-05-12 13:24:52,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 111 transitions, 661 flow [2024-05-12 13:24:52,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:24:52,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:24:52,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 174 transitions. [2024-05-12 13:24:52,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5918367346938775 [2024-05-12 13:24:52,104 INFO L175 Difference]: Start difference. First operand has 63 places, 65 transitions, 301 flow. Second operand 6 states and 174 transitions. [2024-05-12 13:24:52,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 111 transitions, 661 flow [2024-05-12 13:24:52,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 111 transitions, 653 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-05-12 13:24:52,109 INFO L231 Difference]: Finished difference. Result has 69 places, 69 transitions, 378 flow [2024-05-12 13:24:52,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=378, PETRI_PLACES=69, PETRI_TRANSITIONS=69} [2024-05-12 13:24:52,110 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 14 predicate places. [2024-05-12 13:24:52,110 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 69 transitions, 378 flow [2024-05-12 13:24:52,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:52,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:52,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:52,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 13:24:52,111 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:24:52,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:52,111 INFO L85 PathProgramCache]: Analyzing trace with hash 956004719, now seen corresponding path program 1 times [2024-05-12 13:24:52,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:52,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89670880] [2024-05-12 13:24:52,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:52,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:52,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:53,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:53,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:53,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89670880] [2024-05-12 13:24:53,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89670880] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:53,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:53,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:24:53,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011791781] [2024-05-12 13:24:53,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:53,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:24:53,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:53,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:24:53,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:24:53,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-05-12 13:24:53,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 69 transitions, 378 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:53,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:53,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-05-12 13:24:53,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:53,868 INFO L124 PetriNetUnfolderBase]: 3909/5941 cut-off events. [2024-05-12 13:24:53,869 INFO L125 PetriNetUnfolderBase]: For 9488/9491 co-relation queries the response was YES. [2024-05-12 13:24:53,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17918 conditions, 5941 events. 3909/5941 cut-off events. For 9488/9491 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 34207 event pairs, 1053 based on Foata normal form. 12/5885 useless extension candidates. Maximal degree in co-relation 17893. Up to 5358 conditions per place. [2024-05-12 13:24:53,905 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 88 selfloop transitions, 40 changer transitions 0/138 dead transitions. [2024-05-12 13:24:53,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 138 transitions, 936 flow [2024-05-12 13:24:53,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:24:53,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:24:53,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 198 transitions. [2024-05-12 13:24:53,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.577259475218659 [2024-05-12 13:24:53,907 INFO L175 Difference]: Start difference. First operand has 69 places, 69 transitions, 378 flow. Second operand 7 states and 198 transitions. [2024-05-12 13:24:53,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 138 transitions, 936 flow [2024-05-12 13:24:53,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 138 transitions, 883 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-05-12 13:24:53,914 INFO L231 Difference]: Finished difference. Result has 74 places, 87 transitions, 601 flow [2024-05-12 13:24:53,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=601, PETRI_PLACES=74, PETRI_TRANSITIONS=87} [2024-05-12 13:24:53,916 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 19 predicate places. [2024-05-12 13:24:53,917 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 87 transitions, 601 flow [2024-05-12 13:24:53,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:53,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:53,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:53,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 13:24:53,917 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:24:53,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:53,918 INFO L85 PathProgramCache]: Analyzing trace with hash -596312106, now seen corresponding path program 1 times [2024-05-12 13:24:53,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:53,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225532869] [2024-05-12 13:24:53,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:53,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:53,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:54,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:54,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:54,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225532869] [2024-05-12 13:24:54,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225532869] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:54,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:54,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:24:54,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890355751] [2024-05-12 13:24:54,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:54,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:24:54,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:54,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:24:54,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:24:54,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:24:54,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 87 transitions, 601 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 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) [2024-05-12 13:24:54,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:54,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:24:54,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:55,368 INFO L124 PetriNetUnfolderBase]: 4551/7416 cut-off events. [2024-05-12 13:24:55,368 INFO L125 PetriNetUnfolderBase]: For 17453/17453 co-relation queries the response was YES. [2024-05-12 13:24:55,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23487 conditions, 7416 events. 4551/7416 cut-off events. For 17453/17453 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 47233 event pairs, 1946 based on Foata normal form. 2/7197 useless extension candidates. Maximal degree in co-relation 23458. Up to 6493 conditions per place. [2024-05-12 13:24:55,418 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 81 selfloop transitions, 14 changer transitions 0/104 dead transitions. [2024-05-12 13:24:55,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 104 transitions, 831 flow [2024-05-12 13:24:55,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:24:55,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:24:55,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-05-12 13:24:55,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-05-12 13:24:55,419 INFO L175 Difference]: Start difference. First operand has 74 places, 87 transitions, 601 flow. Second operand 5 states and 120 transitions. [2024-05-12 13:24:55,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 104 transitions, 831 flow [2024-05-12 13:24:55,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 104 transitions, 767 flow, removed 32 selfloop flow, removed 0 redundant places. [2024-05-12 13:24:55,434 INFO L231 Difference]: Finished difference. Result has 79 places, 87 transitions, 577 flow [2024-05-12 13:24:55,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=577, PETRI_PLACES=79, PETRI_TRANSITIONS=87} [2024-05-12 13:24:55,435 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 24 predicate places. [2024-05-12 13:24:55,435 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 87 transitions, 577 flow [2024-05-12 13:24:55,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 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) [2024-05-12 13:24:55,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:55,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:55,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 13:24:55,435 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:24:55,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:55,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1338122845, now seen corresponding path program 1 times [2024-05-12 13:24:55,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:55,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226405801] [2024-05-12 13:24:55,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:55,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:55,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:56,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:56,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:56,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226405801] [2024-05-12 13:24:56,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226405801] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:56,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:56,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:24:56,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606866976] [2024-05-12 13:24:56,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:56,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:24:56,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:56,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:24:56,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:24:56,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:24:56,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 87 transitions, 577 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 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) [2024-05-12 13:24:56,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:56,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:24:56,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:57,100 INFO L124 PetriNetUnfolderBase]: 4579/7485 cut-off events. [2024-05-12 13:24:57,100 INFO L125 PetriNetUnfolderBase]: For 16174/16174 co-relation queries the response was YES. [2024-05-12 13:24:57,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22613 conditions, 7485 events. 4579/7485 cut-off events. For 16174/16174 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 47750 event pairs, 1839 based on Foata normal form. 6/7302 useless extension candidates. Maximal degree in co-relation 22580. Up to 6411 conditions per place. [2024-05-12 13:24:57,143 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 99 selfloop transitions, 21 changer transitions 0/129 dead transitions. [2024-05-12 13:24:57,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 129 transitions, 985 flow [2024-05-12 13:24:57,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:24:57,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:24:57,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-05-12 13:24:57,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5136054421768708 [2024-05-12 13:24:57,145 INFO L175 Difference]: Start difference. First operand has 79 places, 87 transitions, 577 flow. Second operand 6 states and 151 transitions. [2024-05-12 13:24:57,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 129 transitions, 985 flow [2024-05-12 13:24:57,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 129 transitions, 946 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-05-12 13:24:57,156 INFO L231 Difference]: Finished difference. Result has 83 places, 98 transitions, 685 flow [2024-05-12 13:24:57,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=685, PETRI_PLACES=83, PETRI_TRANSITIONS=98} [2024-05-12 13:24:57,157 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 28 predicate places. [2024-05-12 13:24:57,157 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 98 transitions, 685 flow [2024-05-12 13:24:57,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 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) [2024-05-12 13:24:57,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:57,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:57,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 13:24:57,158 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:24:57,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:57,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1832624440, now seen corresponding path program 1 times [2024-05-12 13:24:57,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:57,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824086771] [2024-05-12 13:24:57,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:57,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:57,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:57,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:57,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:57,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824086771] [2024-05-12 13:24:57,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824086771] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:57,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:57,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:24:57,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660159325] [2024-05-12 13:24:57,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:57,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:24:57,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:57,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:24:57,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:24:57,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:24:57,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 98 transitions, 685 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 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) [2024-05-12 13:24:57,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:57,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:24:57,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:58,683 INFO L124 PetriNetUnfolderBase]: 4597/7393 cut-off events. [2024-05-12 13:24:58,684 INFO L125 PetriNetUnfolderBase]: For 21850/21859 co-relation queries the response was YES. [2024-05-12 13:24:58,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24694 conditions, 7393 events. 4597/7393 cut-off events. For 21850/21859 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 45940 event pairs, 1686 based on Foata normal form. 10/7215 useless extension candidates. Maximal degree in co-relation 24659. Up to 6439 conditions per place. [2024-05-12 13:24:58,735 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 101 selfloop transitions, 21 changer transitions 0/131 dead transitions. [2024-05-12 13:24:58,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 131 transitions, 1066 flow [2024-05-12 13:24:58,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:24:58,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:24:58,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-05-12 13:24:58,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5136054421768708 [2024-05-12 13:24:58,736 INFO L175 Difference]: Start difference. First operand has 83 places, 98 transitions, 685 flow. Second operand 6 states and 151 transitions. [2024-05-12 13:24:58,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 131 transitions, 1066 flow [2024-05-12 13:24:58,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 131 transitions, 1050 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-05-12 13:24:58,754 INFO L231 Difference]: Finished difference. Result has 88 places, 101 transitions, 754 flow [2024-05-12 13:24:58,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=754, PETRI_PLACES=88, PETRI_TRANSITIONS=101} [2024-05-12 13:24:58,755 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 33 predicate places. [2024-05-12 13:24:58,755 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 101 transitions, 754 flow [2024-05-12 13:24:58,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 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) [2024-05-12 13:24:58,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:58,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:58,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-05-12 13:24:58,756 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:24:58,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:58,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1824431140, now seen corresponding path program 2 times [2024-05-12 13:24:58,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:58,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857772496] [2024-05-12 13:24:58,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:58,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:58,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:59,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:59,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:59,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857772496] [2024-05-12 13:24:59,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857772496] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:59,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:59,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:24:59,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160381998] [2024-05-12 13:24:59,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:59,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:24:59,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:59,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:24:59,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:24:59,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:24:59,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 101 transitions, 754 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 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) [2024-05-12 13:24:59,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:59,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:24:59,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:00,297 INFO L124 PetriNetUnfolderBase]: 4582/7493 cut-off events. [2024-05-12 13:25:00,298 INFO L125 PetriNetUnfolderBase]: For 23056/23056 co-relation queries the response was YES. [2024-05-12 13:25:00,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24818 conditions, 7493 events. 4582/7493 cut-off events. For 23056/23056 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 47938 event pairs, 1901 based on Foata normal form. 2/7306 useless extension candidates. Maximal degree in co-relation 24780. Up to 6522 conditions per place. [2024-05-12 13:25:00,347 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 102 selfloop transitions, 13 changer transitions 0/124 dead transitions. [2024-05-12 13:25:00,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 124 transitions, 1042 flow [2024-05-12 13:25:00,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:25:00,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:25:00,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-05-12 13:25:00,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47959183673469385 [2024-05-12 13:25:00,348 INFO L175 Difference]: Start difference. First operand has 88 places, 101 transitions, 754 flow. Second operand 6 states and 141 transitions. [2024-05-12 13:25:00,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 124 transitions, 1042 flow [2024-05-12 13:25:00,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 124 transitions, 997 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-05-12 13:25:00,371 INFO L231 Difference]: Finished difference. Result has 91 places, 101 transitions, 743 flow [2024-05-12 13:25:00,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=743, PETRI_PLACES=91, PETRI_TRANSITIONS=101} [2024-05-12 13:25:00,372 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 36 predicate places. [2024-05-12 13:25:00,372 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 101 transitions, 743 flow [2024-05-12 13:25:00,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 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) [2024-05-12 13:25:00,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:00,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:00,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-05-12 13:25:00,373 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:25:00,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:00,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1382603519, now seen corresponding path program 1 times [2024-05-12 13:25:00,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:00,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656524690] [2024-05-12 13:25:00,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:00,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:00,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:01,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:01,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:01,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656524690] [2024-05-12 13:25:01,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656524690] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:01,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:01,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:25:01,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273950480] [2024-05-12 13:25:01,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:01,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:25:01,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:01,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:25:01,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:25:01,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:25:01,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 101 transitions, 743 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:01,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:01,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:25:01,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:02,110 INFO L124 PetriNetUnfolderBase]: 5006/7982 cut-off events. [2024-05-12 13:25:02,111 INFO L125 PetriNetUnfolderBase]: For 26900/26900 co-relation queries the response was YES. [2024-05-12 13:25:02,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26924 conditions, 7982 events. 5006/7982 cut-off events. For 26900/26900 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 49719 event pairs, 1495 based on Foata normal form. 12/7801 useless extension candidates. Maximal degree in co-relation 26885. Up to 6396 conditions per place. [2024-05-12 13:25:02,154 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 129 selfloop transitions, 34 changer transitions 0/172 dead transitions. [2024-05-12 13:25:02,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 172 transitions, 1443 flow [2024-05-12 13:25:02,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:25:02,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:25:02,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 187 transitions. [2024-05-12 13:25:02,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5451895043731778 [2024-05-12 13:25:02,156 INFO L175 Difference]: Start difference. First operand has 91 places, 101 transitions, 743 flow. Second operand 7 states and 187 transitions. [2024-05-12 13:25:02,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 172 transitions, 1443 flow [2024-05-12 13:25:02,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 172 transitions, 1387 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-05-12 13:25:02,181 INFO L231 Difference]: Finished difference. Result has 95 places, 123 transitions, 972 flow [2024-05-12 13:25:02,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=687, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=972, PETRI_PLACES=95, PETRI_TRANSITIONS=123} [2024-05-12 13:25:02,181 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 40 predicate places. [2024-05-12 13:25:02,182 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 123 transitions, 972 flow [2024-05-12 13:25:02,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:02,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:02,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:02,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-05-12 13:25:02,182 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:25:02,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:02,183 INFO L85 PathProgramCache]: Analyzing trace with hash -376084049, now seen corresponding path program 2 times [2024-05-12 13:25:02,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:02,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960302115] [2024-05-12 13:25:02,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:02,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:02,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:02,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:02,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960302115] [2024-05-12 13:25:02,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960302115] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:02,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:02,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:25:02,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298211542] [2024-05-12 13:25:02,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:02,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:25:02,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:02,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:25:02,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:25:02,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:25:02,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 123 transitions, 972 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:02,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:02,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:25:02,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:04,139 INFO L124 PetriNetUnfolderBase]: 5090/8329 cut-off events. [2024-05-12 13:25:04,139 INFO L125 PetriNetUnfolderBase]: For 40587/40587 co-relation queries the response was YES. [2024-05-12 13:25:04,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31825 conditions, 8329 events. 5090/8329 cut-off events. For 40587/40587 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 54052 event pairs, 2607 based on Foata normal form. 6/8128 useless extension candidates. Maximal degree in co-relation 31783. Up to 7131 conditions per place. [2024-05-12 13:25:04,205 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 129 selfloop transitions, 28 changer transitions 0/166 dead transitions. [2024-05-12 13:25:04,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 166 transitions, 1521 flow [2024-05-12 13:25:04,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:25:04,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:25:04,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-05-12 13:25:04,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46938775510204084 [2024-05-12 13:25:04,207 INFO L175 Difference]: Start difference. First operand has 95 places, 123 transitions, 972 flow. Second operand 8 states and 184 transitions. [2024-05-12 13:25:04,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 166 transitions, 1521 flow [2024-05-12 13:25:04,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 166 transitions, 1483 flow, removed 18 selfloop flow, removed 1 redundant places. [2024-05-12 13:25:04,252 INFO L231 Difference]: Finished difference. Result has 106 places, 135 transitions, 1159 flow [2024-05-12 13:25:04,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1159, PETRI_PLACES=106, PETRI_TRANSITIONS=135} [2024-05-12 13:25:04,253 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 51 predicate places. [2024-05-12 13:25:04,253 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 135 transitions, 1159 flow [2024-05-12 13:25:04,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:04,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:04,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:04,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-05-12 13:25:04,254 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:25:04,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:04,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1745215925, now seen corresponding path program 3 times [2024-05-12 13:25:04,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:04,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382084345] [2024-05-12 13:25:04,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:04,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:04,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:04,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:04,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:04,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382084345] [2024-05-12 13:25:04,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382084345] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:04,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:04,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:25:04,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278796601] [2024-05-12 13:25:04,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:04,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:25:04,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:04,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:25:04,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:25:05,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:25:05,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 135 transitions, 1159 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:05,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:05,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:25:05,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:06,109 INFO L124 PetriNetUnfolderBase]: 5118/8371 cut-off events. [2024-05-12 13:25:06,110 INFO L125 PetriNetUnfolderBase]: For 45142/45142 co-relation queries the response was YES. [2024-05-12 13:25:06,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32774 conditions, 8371 events. 5118/8371 cut-off events. For 45142/45142 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 54365 event pairs, 2601 based on Foata normal form. 6/8168 useless extension candidates. Maximal degree in co-relation 32725. Up to 7031 conditions per place. [2024-05-12 13:25:06,174 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 136 selfloop transitions, 33 changer transitions 0/178 dead transitions. [2024-05-12 13:25:06,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 178 transitions, 1737 flow [2024-05-12 13:25:06,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:25:06,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:25:06,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-05-12 13:25:06,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2024-05-12 13:25:06,176 INFO L175 Difference]: Start difference. First operand has 106 places, 135 transitions, 1159 flow. Second operand 7 states and 175 transitions. [2024-05-12 13:25:06,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 178 transitions, 1737 flow [2024-05-12 13:25:06,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 178 transitions, 1670 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-05-12 13:25:06,224 INFO L231 Difference]: Finished difference. Result has 111 places, 143 transitions, 1269 flow [2024-05-12 13:25:06,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1092, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1269, PETRI_PLACES=111, PETRI_TRANSITIONS=143} [2024-05-12 13:25:06,225 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 56 predicate places. [2024-05-12 13:25:06,225 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 143 transitions, 1269 flow [2024-05-12 13:25:06,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:06,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:06,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:06,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-05-12 13:25:06,226 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:25:06,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:06,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1740777534, now seen corresponding path program 1 times [2024-05-12 13:25:06,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:06,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120711827] [2024-05-12 13:25:06,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:06,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:06,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:07,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:07,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:07,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120711827] [2024-05-12 13:25:07,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120711827] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:07,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:07,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:25:07,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661848486] [2024-05-12 13:25:07,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:07,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:25:07,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:07,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:25:07,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:25:07,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:25:07,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 143 transitions, 1269 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 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) [2024-05-12 13:25:07,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:07,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:25:07,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:08,700 INFO L124 PetriNetUnfolderBase]: 5141/8422 cut-off events. [2024-05-12 13:25:08,701 INFO L125 PetriNetUnfolderBase]: For 52620/52620 co-relation queries the response was YES. [2024-05-12 13:25:08,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34072 conditions, 8422 events. 5141/8422 cut-off events. For 52620/52620 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 54851 event pairs, 2537 based on Foata normal form. 6/8212 useless extension candidates. Maximal degree in co-relation 34021. Up to 7122 conditions per place. [2024-05-12 13:25:08,749 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 141 selfloop transitions, 34 changer transitions 0/184 dead transitions. [2024-05-12 13:25:08,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 184 transitions, 1807 flow [2024-05-12 13:25:08,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:25:08,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:25:08,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-05-12 13:25:08,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2024-05-12 13:25:08,750 INFO L175 Difference]: Start difference. First operand has 111 places, 143 transitions, 1269 flow. Second operand 7 states and 175 transitions. [2024-05-12 13:25:08,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 184 transitions, 1807 flow [2024-05-12 13:25:08,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 184 transitions, 1750 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-05-12 13:25:08,792 INFO L231 Difference]: Finished difference. Result has 115 places, 146 transitions, 1326 flow [2024-05-12 13:25:08,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1212, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1326, PETRI_PLACES=115, PETRI_TRANSITIONS=146} [2024-05-12 13:25:08,793 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 60 predicate places. [2024-05-12 13:25:08,793 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 146 transitions, 1326 flow [2024-05-12 13:25:08,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 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) [2024-05-12 13:25:08,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:08,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:08,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-05-12 13:25:08,794 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:25:08,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:08,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1395292197, now seen corresponding path program 1 times [2024-05-12 13:25:08,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:08,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195824260] [2024-05-12 13:25:08,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:08,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:08,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:09,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:09,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:09,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195824260] [2024-05-12 13:25:09,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195824260] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:09,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:09,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:25:09,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706213376] [2024-05-12 13:25:09,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:09,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:25:09,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:09,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:25:09,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:25:09,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:25:09,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 146 transitions, 1326 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 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) [2024-05-12 13:25:09,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:09,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:25:09,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:10,426 INFO L124 PetriNetUnfolderBase]: 5138/8408 cut-off events. [2024-05-12 13:25:10,426 INFO L125 PetriNetUnfolderBase]: For 56299/56299 co-relation queries the response was YES. [2024-05-12 13:25:10,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34854 conditions, 8408 events. 5138/8408 cut-off events. For 56299/56299 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 54660 event pairs, 2605 based on Foata normal form. 1/8198 useless extension candidates. Maximal degree in co-relation 34801. Up to 7302 conditions per place. [2024-05-12 13:25:10,479 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 134 selfloop transitions, 16 changer transitions 0/159 dead transitions. [2024-05-12 13:25:10,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 159 transitions, 1656 flow [2024-05-12 13:25:10,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:25:10,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:25:10,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2024-05-12 13:25:10,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4387755102040816 [2024-05-12 13:25:10,480 INFO L175 Difference]: Start difference. First operand has 115 places, 146 transitions, 1326 flow. Second operand 6 states and 129 transitions. [2024-05-12 13:25:10,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 159 transitions, 1656 flow [2024-05-12 13:25:10,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 159 transitions, 1556 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-05-12 13:25:10,520 INFO L231 Difference]: Finished difference. Result has 116 places, 146 transitions, 1268 flow [2024-05-12 13:25:10,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1226, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1268, PETRI_PLACES=116, PETRI_TRANSITIONS=146} [2024-05-12 13:25:10,520 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 61 predicate places. [2024-05-12 13:25:10,520 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 146 transitions, 1268 flow [2024-05-12 13:25:10,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 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) [2024-05-12 13:25:10,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:10,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:10,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-05-12 13:25:10,521 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:25:10,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:10,521 INFO L85 PathProgramCache]: Analyzing trace with hash -160312383, now seen corresponding path program 1 times [2024-05-12 13:25:10,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:10,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813208376] [2024-05-12 13:25:10,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:10,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:10,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:11,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:11,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:11,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813208376] [2024-05-12 13:25:11,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813208376] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:11,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:11,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:25:11,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503858282] [2024-05-12 13:25:11,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:11,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:25:11,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:11,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:25:11,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:25:11,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:25:11,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 146 transitions, 1268 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 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) [2024-05-12 13:25:11,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:11,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:25:11,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:12,748 INFO L124 PetriNetUnfolderBase]: 5404/8915 cut-off events. [2024-05-12 13:25:12,748 INFO L125 PetriNetUnfolderBase]: For 59076/59100 co-relation queries the response was YES. [2024-05-12 13:25:12,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37104 conditions, 8915 events. 5404/8915 cut-off events. For 59076/59100 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 58385 event pairs, 1966 based on Foata normal form. 22/8680 useless extension candidates. Maximal degree in co-relation 37050. Up to 7388 conditions per place. [2024-05-12 13:25:12,813 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 184 selfloop transitions, 48 changer transitions 0/241 dead transitions. [2024-05-12 13:25:12,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 241 transitions, 2377 flow [2024-05-12 13:25:12,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:25:12,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:25:12,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-05-12 13:25:12,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5056689342403629 [2024-05-12 13:25:12,815 INFO L175 Difference]: Start difference. First operand has 116 places, 146 transitions, 1268 flow. Second operand 9 states and 223 transitions. [2024-05-12 13:25:12,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 241 transitions, 2377 flow [2024-05-12 13:25:12,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 241 transitions, 2324 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-05-12 13:25:12,878 INFO L231 Difference]: Finished difference. Result has 124 places, 184 transitions, 1789 flow [2024-05-12 13:25:12,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1215, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1789, PETRI_PLACES=124, PETRI_TRANSITIONS=184} [2024-05-12 13:25:12,879 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 69 predicate places. [2024-05-12 13:25:12,879 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 184 transitions, 1789 flow [2024-05-12 13:25:12,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 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) [2024-05-12 13:25:12,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:12,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:12,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-05-12 13:25:12,880 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:25:12,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:12,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1022754789, now seen corresponding path program 2 times [2024-05-12 13:25:12,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:12,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153981837] [2024-05-12 13:25:12,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:12,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:12,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:13,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:13,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:13,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153981837] [2024-05-12 13:25:13,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153981837] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:13,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:13,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:25:13,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436093292] [2024-05-12 13:25:13,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:13,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:25:13,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:13,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:25:13,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:25:13,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:25:13,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 184 transitions, 1789 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:13,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:13,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:25:13,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:14,844 INFO L124 PetriNetUnfolderBase]: 5492/9067 cut-off events. [2024-05-12 13:25:14,845 INFO L125 PetriNetUnfolderBase]: For 70380/70404 co-relation queries the response was YES. [2024-05-12 13:25:14,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40319 conditions, 9067 events. 5492/9067 cut-off events. For 70380/70404 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 59406 event pairs, 1983 based on Foata normal form. 22/8826 useless extension candidates. Maximal degree in co-relation 40262. Up to 7348 conditions per place. [2024-05-12 13:25:14,917 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 153 selfloop transitions, 78 changer transitions 0/240 dead transitions. [2024-05-12 13:25:14,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 240 transitions, 2685 flow [2024-05-12 13:25:14,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:25:14,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:25:14,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-05-12 13:25:14,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-05-12 13:25:14,919 INFO L175 Difference]: Start difference. First operand has 124 places, 184 transitions, 1789 flow. Second operand 7 states and 182 transitions. [2024-05-12 13:25:14,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 240 transitions, 2685 flow [2024-05-12 13:25:15,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 240 transitions, 2628 flow, removed 23 selfloop flow, removed 2 redundant places. [2024-05-12 13:25:15,016 INFO L231 Difference]: Finished difference. Result has 131 places, 200 transitions, 2170 flow [2024-05-12 13:25:15,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1732, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2170, PETRI_PLACES=131, PETRI_TRANSITIONS=200} [2024-05-12 13:25:15,017 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 76 predicate places. [2024-05-12 13:25:15,017 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 200 transitions, 2170 flow [2024-05-12 13:25:15,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:15,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:15,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:15,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-05-12 13:25:15,018 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:25:15,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:15,018 INFO L85 PathProgramCache]: Analyzing trace with hash 667764726, now seen corresponding path program 1 times [2024-05-12 13:25:15,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:15,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896500116] [2024-05-12 13:25:15,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:15,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:15,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:15,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:15,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:15,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896500116] [2024-05-12 13:25:15,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896500116] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:15,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:15,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:25:15,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226510320] [2024-05-12 13:25:15,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:15,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:25:15,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:15,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:25:15,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:25:15,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:25:15,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 200 transitions, 2170 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 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) [2024-05-12 13:25:15,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:15,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:25:15,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:17,175 INFO L124 PetriNetUnfolderBase]: 6383/10232 cut-off events. [2024-05-12 13:25:17,176 INFO L125 PetriNetUnfolderBase]: For 91053/91062 co-relation queries the response was YES. [2024-05-12 13:25:17,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48981 conditions, 10232 events. 6383/10232 cut-off events. For 91053/91062 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 66531 event pairs, 1617 based on Foata normal form. 14/9969 useless extension candidates. Maximal degree in co-relation 48920. Up to 7681 conditions per place. [2024-05-12 13:25:17,263 INFO L140 encePairwiseOnDemand]: 32/49 looper letters, 241 selfloop transitions, 77 changer transitions 0/327 dead transitions. [2024-05-12 13:25:17,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 327 transitions, 3972 flow [2024-05-12 13:25:17,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:25:17,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:25:17,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 216 transitions. [2024-05-12 13:25:17,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2024-05-12 13:25:17,265 INFO L175 Difference]: Start difference. First operand has 131 places, 200 transitions, 2170 flow. Second operand 8 states and 216 transitions. [2024-05-12 13:25:17,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 327 transitions, 3972 flow [2024-05-12 13:25:17,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 327 transitions, 3883 flow, removed 35 selfloop flow, removed 3 redundant places. [2024-05-12 13:25:17,400 INFO L231 Difference]: Finished difference. Result has 139 places, 249 transitions, 2869 flow [2024-05-12 13:25:17,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2107, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2869, PETRI_PLACES=139, PETRI_TRANSITIONS=249} [2024-05-12 13:25:17,400 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 84 predicate places. [2024-05-12 13:25:17,400 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 249 transitions, 2869 flow [2024-05-12 13:25:17,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 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) [2024-05-12 13:25:17,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:17,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:17,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-05-12 13:25:17,401 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:25:17,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:17,401 INFO L85 PathProgramCache]: Analyzing trace with hash 666876576, now seen corresponding path program 2 times [2024-05-12 13:25:17,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:17,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448744336] [2024-05-12 13:25:17,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:17,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:17,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:17,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:17,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:17,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448744336] [2024-05-12 13:25:17,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448744336] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:17,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:17,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:25:17,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843396286] [2024-05-12 13:25:17,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:17,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:25:17,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:17,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:25:17,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:25:18,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:25:18,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 249 transitions, 2869 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 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) [2024-05-12 13:25:18,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:18,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:25:18,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:19,644 INFO L124 PetriNetUnfolderBase]: 6719/10709 cut-off events. [2024-05-12 13:25:19,645 INFO L125 PetriNetUnfolderBase]: For 102259/102270 co-relation queries the response was YES. [2024-05-12 13:25:19,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55000 conditions, 10709 events. 6719/10709 cut-off events. For 102259/102270 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 69555 event pairs, 1598 based on Foata normal form. 16/10452 useless extension candidates. Maximal degree in co-relation 54935. Up to 7872 conditions per place. [2024-05-12 13:25:19,740 INFO L140 encePairwiseOnDemand]: 33/49 looper letters, 242 selfloop transitions, 89 changer transitions 0/340 dead transitions. [2024-05-12 13:25:19,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 340 transitions, 4410 flow [2024-05-12 13:25:19,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:25:19,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:25:19,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-05-12 13:25:19,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5433673469387755 [2024-05-12 13:25:19,741 INFO L175 Difference]: Start difference. First operand has 139 places, 249 transitions, 2869 flow. Second operand 8 states and 213 transitions. [2024-05-12 13:25:19,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 340 transitions, 4410 flow [2024-05-12 13:25:19,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 340 transitions, 4335 flow, removed 28 selfloop flow, removed 2 redundant places. [2024-05-12 13:25:19,915 INFO L231 Difference]: Finished difference. Result has 147 places, 269 transitions, 3298 flow [2024-05-12 13:25:19,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2800, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3298, PETRI_PLACES=147, PETRI_TRANSITIONS=269} [2024-05-12 13:25:19,916 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 92 predicate places. [2024-05-12 13:25:19,916 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 269 transitions, 3298 flow [2024-05-12 13:25:19,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 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) [2024-05-12 13:25:19,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:19,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:19,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-05-12 13:25:19,917 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:25:19,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:19,917 INFO L85 PathProgramCache]: Analyzing trace with hash 85150357, now seen corresponding path program 3 times [2024-05-12 13:25:19,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:19,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43858888] [2024-05-12 13:25:19,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:19,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:19,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:20,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:20,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:20,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43858888] [2024-05-12 13:25:20,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43858888] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:20,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:20,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:25:20,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075151035] [2024-05-12 13:25:20,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:20,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:25:20,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:20,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:25:20,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:25:20,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:25:20,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 269 transitions, 3298 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 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) [2024-05-12 13:25:20,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:20,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:25:20,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:22,283 INFO L124 PetriNetUnfolderBase]: 6784/10329 cut-off events. [2024-05-12 13:25:22,284 INFO L125 PetriNetUnfolderBase]: For 114879/114899 co-relation queries the response was YES. [2024-05-12 13:25:22,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58071 conditions, 10329 events. 6784/10329 cut-off events. For 114879/114899 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 62701 event pairs, 1536 based on Foata normal form. 19/10211 useless extension candidates. Maximal degree in co-relation 58002. Up to 9051 conditions per place. [2024-05-12 13:25:22,395 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 219 selfloop transitions, 91 changer transitions 0/319 dead transitions. [2024-05-12 13:25:22,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 319 transitions, 4293 flow [2024-05-12 13:25:22,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:25:22,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:25:22,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-05-12 13:25:22,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5189504373177842 [2024-05-12 13:25:22,396 INFO L175 Difference]: Start difference. First operand has 147 places, 269 transitions, 3298 flow. Second operand 7 states and 178 transitions. [2024-05-12 13:25:22,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 319 transitions, 4293 flow [2024-05-12 13:25:22,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 319 transitions, 4152 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-05-12 13:25:22,714 INFO L231 Difference]: Finished difference. Result has 150 places, 278 transitions, 3482 flow [2024-05-12 13:25:22,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3157, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3482, PETRI_PLACES=150, PETRI_TRANSITIONS=278} [2024-05-12 13:25:22,714 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 95 predicate places. [2024-05-12 13:25:22,714 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 278 transitions, 3482 flow [2024-05-12 13:25:22,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 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) [2024-05-12 13:25:22,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:22,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:22,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-05-12 13:25:22,715 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:25:22,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:22,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1505725369, now seen corresponding path program 4 times [2024-05-12 13:25:22,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:22,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662742463] [2024-05-12 13:25:22,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:22,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:22,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:23,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:23,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:23,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662742463] [2024-05-12 13:25:23,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662742463] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:23,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:23,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:25:23,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141823367] [2024-05-12 13:25:23,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:23,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:25:23,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:23,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:25:23,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:25:23,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:25:23,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 278 transitions, 3482 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 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) [2024-05-12 13:25:23,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:23,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:25:23,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:25,084 INFO L124 PetriNetUnfolderBase]: 6778/10311 cut-off events. [2024-05-12 13:25:25,084 INFO L125 PetriNetUnfolderBase]: For 118535/118555 co-relation queries the response was YES. [2024-05-12 13:25:25,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57657 conditions, 10311 events. 6778/10311 cut-off events. For 118535/118555 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 62419 event pairs, 1524 based on Foata normal form. 20/10194 useless extension candidates. Maximal degree in co-relation 57587. Up to 9217 conditions per place. [2024-05-12 13:25:25,168 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 236 selfloop transitions, 76 changer transitions 0/321 dead transitions. [2024-05-12 13:25:25,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 321 transitions, 4357 flow [2024-05-12 13:25:25,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:25:25,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:25:25,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-05-12 13:25:25,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5043731778425656 [2024-05-12 13:25:25,170 INFO L175 Difference]: Start difference. First operand has 150 places, 278 transitions, 3482 flow. Second operand 7 states and 173 transitions. [2024-05-12 13:25:25,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 321 transitions, 4357 flow [2024-05-12 13:25:25,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 321 transitions, 4109 flow, removed 58 selfloop flow, removed 4 redundant places. [2024-05-12 13:25:25,396 INFO L231 Difference]: Finished difference. Result has 154 places, 281 transitions, 3470 flow [2024-05-12 13:25:25,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3238, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3470, PETRI_PLACES=154, PETRI_TRANSITIONS=281} [2024-05-12 13:25:25,397 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 99 predicate places. [2024-05-12 13:25:25,397 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 281 transitions, 3470 flow [2024-05-12 13:25:25,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 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) [2024-05-12 13:25:25,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:25,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:25,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-05-12 13:25:25,398 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:25:25,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:25,398 INFO L85 PathProgramCache]: Analyzing trace with hash -220769128, now seen corresponding path program 3 times [2024-05-12 13:25:25,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:25,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534453147] [2024-05-12 13:25:25,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:25,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:26,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:26,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:26,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534453147] [2024-05-12 13:25:26,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534453147] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:26,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:26,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:25:26,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485890989] [2024-05-12 13:25:26,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:26,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:25:26,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:26,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:25:26,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:25:26,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:25:26,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 281 transitions, 3470 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 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) [2024-05-12 13:25:26,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:26,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:25:26,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:27,675 INFO L124 PetriNetUnfolderBase]: 7144/11313 cut-off events. [2024-05-12 13:25:27,675 INFO L125 PetriNetUnfolderBase]: For 135684/135695 co-relation queries the response was YES. [2024-05-12 13:25:27,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61963 conditions, 11313 events. 7144/11313 cut-off events. For 135684/135695 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 73241 event pairs, 1656 based on Foata normal form. 20/11045 useless extension candidates. Maximal degree in co-relation 61891. Up to 7804 conditions per place. [2024-05-12 13:25:27,781 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 212 selfloop transitions, 134 changer transitions 0/355 dead transitions. [2024-05-12 13:25:27,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 355 transitions, 4946 flow [2024-05-12 13:25:27,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:25:27,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:25:27,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-05-12 13:25:27,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5422740524781341 [2024-05-12 13:25:27,782 INFO L175 Difference]: Start difference. First operand has 154 places, 281 transitions, 3470 flow. Second operand 7 states and 186 transitions. [2024-05-12 13:25:27,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 355 transitions, 4946 flow [2024-05-12 13:25:27,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 355 transitions, 4779 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-05-12 13:25:27,989 INFO L231 Difference]: Finished difference. Result has 158 places, 303 transitions, 4032 flow [2024-05-12 13:25:27,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3303, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4032, PETRI_PLACES=158, PETRI_TRANSITIONS=303} [2024-05-12 13:25:27,990 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 103 predicate places. [2024-05-12 13:25:27,990 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 303 transitions, 4032 flow [2024-05-12 13:25:27,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 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) [2024-05-12 13:25:27,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:27,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:27,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-05-12 13:25:27,990 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:25:27,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:27,991 INFO L85 PathProgramCache]: Analyzing trace with hash -220774708, now seen corresponding path program 4 times [2024-05-12 13:25:27,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:27,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060788422] [2024-05-12 13:25:27,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:27,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:28,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:28,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:28,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:28,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060788422] [2024-05-12 13:25:28,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060788422] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:28,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:28,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:25:28,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547207553] [2024-05-12 13:25:28,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:28,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:25:28,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:28,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:25:28,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:25:28,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:25:28,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 303 transitions, 4032 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 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) [2024-05-12 13:25:28,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:28,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:25:28,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:30,389 INFO L124 PetriNetUnfolderBase]: 7118/11508 cut-off events. [2024-05-12 13:25:30,389 INFO L125 PetriNetUnfolderBase]: For 157584/157593 co-relation queries the response was YES. [2024-05-12 13:25:30,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65800 conditions, 11508 events. 7118/11508 cut-off events. For 157584/157593 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 76728 event pairs, 2245 based on Foata normal form. 20/11195 useless extension candidates. Maximal degree in co-relation 65726. Up to 7792 conditions per place. [2024-05-12 13:25:30,502 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 215 selfloop transitions, 140 changer transitions 0/364 dead transitions. [2024-05-12 13:25:30,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 364 transitions, 5330 flow [2024-05-12 13:25:30,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:25:30,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:25:30,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 189 transitions. [2024-05-12 13:25:30,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2024-05-12 13:25:30,504 INFO L175 Difference]: Start difference. First operand has 158 places, 303 transitions, 4032 flow. Second operand 7 states and 189 transitions. [2024-05-12 13:25:30,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 364 transitions, 5330 flow [2024-05-12 13:25:30,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 364 transitions, 5104 flow, removed 55 selfloop flow, removed 3 redundant places. [2024-05-12 13:25:30,810 INFO L231 Difference]: Finished difference. Result has 164 places, 308 transitions, 4338 flow [2024-05-12 13:25:30,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3809, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4338, PETRI_PLACES=164, PETRI_TRANSITIONS=308} [2024-05-12 13:25:30,811 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 109 predicate places. [2024-05-12 13:25:30,811 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 308 transitions, 4338 flow [2024-05-12 13:25:30,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 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) [2024-05-12 13:25:30,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:30,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:30,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-05-12 13:25:30,811 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:25:30,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:30,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1698831277, now seen corresponding path program 1 times [2024-05-12 13:25:30,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:30,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744299889] [2024-05-12 13:25:30,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:30,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:31,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:31,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:31,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744299889] [2024-05-12 13:25:31,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744299889] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:31,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:31,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:25:31,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303054293] [2024-05-12 13:25:31,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:31,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:25:31,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:31,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:25:31,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:25:31,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:25:31,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 308 transitions, 4338 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 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) [2024-05-12 13:25:31,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:31,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:25:31,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:33,473 INFO L124 PetriNetUnfolderBase]: 7137/11273 cut-off events. [2024-05-12 13:25:33,473 INFO L125 PetriNetUnfolderBase]: For 167572/167572 co-relation queries the response was YES. [2024-05-12 13:25:33,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67400 conditions, 11273 events. 7137/11273 cut-off events. For 167572/167572 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 73187 event pairs, 2837 based on Foata normal form. 3/11028 useless extension candidates. Maximal degree in co-relation 67323. Up to 9856 conditions per place. [2024-05-12 13:25:33,570 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 304 selfloop transitions, 42 changer transitions 0/355 dead transitions. [2024-05-12 13:25:33,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 355 transitions, 5384 flow [2024-05-12 13:25:33,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:25:33,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:25:33,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-05-12 13:25:33,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5014577259475219 [2024-05-12 13:25:33,572 INFO L175 Difference]: Start difference. First operand has 164 places, 308 transitions, 4338 flow. Second operand 7 states and 172 transitions. [2024-05-12 13:25:33,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 355 transitions, 5384 flow [2024-05-12 13:25:33,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 355 transitions, 5125 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-05-12 13:25:33,791 INFO L231 Difference]: Finished difference. Result has 168 places, 321 transitions, 4379 flow [2024-05-12 13:25:33,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4085, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4379, PETRI_PLACES=168, PETRI_TRANSITIONS=321} [2024-05-12 13:25:33,791 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 113 predicate places. [2024-05-12 13:25:33,792 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 321 transitions, 4379 flow [2024-05-12 13:25:33,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 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) [2024-05-12 13:25:33,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:33,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:33,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-05-12 13:25:33,792 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:25:33,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:33,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1741128054, now seen corresponding path program 5 times [2024-05-12 13:25:33,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:33,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563679125] [2024-05-12 13:25:33,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:33,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:33,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:34,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:34,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:34,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563679125] [2024-05-12 13:25:34,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563679125] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:34,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:34,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:25:34,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704594163] [2024-05-12 13:25:34,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:34,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:25:34,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:34,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:25:34,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:25:34,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:25:34,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 321 transitions, 4379 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 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) [2024-05-12 13:25:34,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:34,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:25:34,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:36,400 INFO L124 PetriNetUnfolderBase]: 7197/11353 cut-off events. [2024-05-12 13:25:36,400 INFO L125 PetriNetUnfolderBase]: For 167207/167222 co-relation queries the response was YES. [2024-05-12 13:25:36,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67649 conditions, 11353 events. 7197/11353 cut-off events. For 167207/167222 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 73769 event pairs, 2828 based on Foata normal form. 20/11127 useless extension candidates. Maximal degree in co-relation 67570. Up to 9843 conditions per place. [2024-05-12 13:25:36,538 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 324 selfloop transitions, 41 changer transitions 0/374 dead transitions. [2024-05-12 13:25:36,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 374 transitions, 5576 flow [2024-05-12 13:25:36,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:25:36,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:25:36,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-05-12 13:25:36,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5043731778425656 [2024-05-12 13:25:36,540 INFO L175 Difference]: Start difference. First operand has 168 places, 321 transitions, 4379 flow. Second operand 7 states and 173 transitions. [2024-05-12 13:25:36,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 374 transitions, 5576 flow [2024-05-12 13:25:36,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 374 transitions, 5484 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-05-12 13:25:36,841 INFO L231 Difference]: Finished difference. Result has 172 places, 333 transitions, 4604 flow [2024-05-12 13:25:36,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4287, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4604, PETRI_PLACES=172, PETRI_TRANSITIONS=333} [2024-05-12 13:25:36,841 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 117 predicate places. [2024-05-12 13:25:36,841 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 333 transitions, 4604 flow [2024-05-12 13:25:36,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 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) [2024-05-12 13:25:36,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:36,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:36,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-05-12 13:25:36,842 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:25:36,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:36,842 INFO L85 PathProgramCache]: Analyzing trace with hash 304386480, now seen corresponding path program 1 times [2024-05-12 13:25:36,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:36,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127598574] [2024-05-12 13:25:36,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:36,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:36,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:37,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:37,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:37,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127598574] [2024-05-12 13:25:37,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127598574] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:37,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:37,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:25:37,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200984855] [2024-05-12 13:25:37,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:37,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:25:37,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:37,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:25:37,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:25:37,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-05-12 13:25:37,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 333 transitions, 4604 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:37,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:37,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-05-12 13:25:37,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:39,373 INFO L124 PetriNetUnfolderBase]: 7830/12113 cut-off events. [2024-05-12 13:25:39,373 INFO L125 PetriNetUnfolderBase]: For 190514/190514 co-relation queries the response was YES. [2024-05-12 13:25:39,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72712 conditions, 12113 events. 7830/12113 cut-off events. For 190514/190514 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 76985 event pairs, 3228 based on Foata normal form. 1/11838 useless extension candidates. Maximal degree in co-relation 72632. Up to 11001 conditions per place. [2024-05-12 13:25:39,498 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 328 selfloop transitions, 18 changer transitions 0/354 dead transitions. [2024-05-12 13:25:39,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 354 transitions, 5402 flow [2024-05-12 13:25:39,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:25:39,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:25:39,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2024-05-12 13:25:39,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.445578231292517 [2024-05-12 13:25:39,499 INFO L175 Difference]: Start difference. First operand has 172 places, 333 transitions, 4604 flow. Second operand 6 states and 131 transitions. [2024-05-12 13:25:39,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 354 transitions, 5402 flow [2024-05-12 13:25:39,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 354 transitions, 5282 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-05-12 13:25:39,778 INFO L231 Difference]: Finished difference. Result has 173 places, 336 transitions, 4561 flow [2024-05-12 13:25:39,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4484, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4561, PETRI_PLACES=173, PETRI_TRANSITIONS=336} [2024-05-12 13:25:39,779 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 118 predicate places. [2024-05-12 13:25:39,779 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 336 transitions, 4561 flow [2024-05-12 13:25:39,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:39,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:39,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:39,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-05-12 13:25:39,779 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:25:39,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:39,780 INFO L85 PathProgramCache]: Analyzing trace with hash -803302396, now seen corresponding path program 1 times [2024-05-12 13:25:39,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:39,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042610851] [2024-05-12 13:25:39,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:39,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:39,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:40,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:40,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:40,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042610851] [2024-05-12 13:25:40,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042610851] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:40,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:40,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:25:40,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231394422] [2024-05-12 13:25:40,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:40,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:25:40,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:40,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:25:40,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:25:40,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:25:40,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 336 transitions, 4561 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:40,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:40,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:25:40,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:42,832 INFO L124 PetriNetUnfolderBase]: 7625/12334 cut-off events. [2024-05-12 13:25:42,832 INFO L125 PetriNetUnfolderBase]: For 197129/197152 co-relation queries the response was YES. [2024-05-12 13:25:42,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72747 conditions, 12334 events. 7625/12334 cut-off events. For 197129/197152 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 83056 event pairs, 2223 based on Foata normal form. 22/11963 useless extension candidates. Maximal degree in co-relation 72666. Up to 10202 conditions per place. [2024-05-12 13:25:42,973 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 335 selfloop transitions, 56 changer transitions 0/401 dead transitions. [2024-05-12 13:25:42,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 401 transitions, 5885 flow [2024-05-12 13:25:42,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:25:42,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:25:42,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 225 transitions. [2024-05-12 13:25:42,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2024-05-12 13:25:42,974 INFO L175 Difference]: Start difference. First operand has 173 places, 336 transitions, 4561 flow. Second operand 9 states and 225 transitions. [2024-05-12 13:25:42,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 401 transitions, 5885 flow [2024-05-12 13:25:43,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 401 transitions, 5834 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-05-12 13:25:43,263 INFO L231 Difference]: Finished difference. Result has 179 places, 343 transitions, 4763 flow [2024-05-12 13:25:43,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4510, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4763, PETRI_PLACES=179, PETRI_TRANSITIONS=343} [2024-05-12 13:25:43,264 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 124 predicate places. [2024-05-12 13:25:43,264 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 343 transitions, 4763 flow [2024-05-12 13:25:43,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:43,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:43,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:43,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-05-12 13:25:43,264 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:25:43,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:43,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1804277206, now seen corresponding path program 2 times [2024-05-12 13:25:43,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:43,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346090785] [2024-05-12 13:25:43,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:43,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:43,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:44,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:44,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:44,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346090785] [2024-05-12 13:25:44,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346090785] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:44,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:44,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:25:44,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4594163] [2024-05-12 13:25:44,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:44,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:25:44,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:44,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:25:44,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:25:44,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:25:44,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 343 transitions, 4763 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:44,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:44,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:25:44,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:46,230 INFO L124 PetriNetUnfolderBase]: 7653/12394 cut-off events. [2024-05-12 13:25:46,231 INFO L125 PetriNetUnfolderBase]: For 209623/209646 co-relation queries the response was YES. [2024-05-12 13:25:46,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74481 conditions, 12394 events. 7653/12394 cut-off events. For 209623/209646 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 83518 event pairs, 2258 based on Foata normal form. 22/12017 useless extension candidates. Maximal degree in co-relation 74398. Up to 10370 conditions per place. [2024-05-12 13:25:46,371 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 341 selfloop transitions, 56 changer transitions 0/407 dead transitions. [2024-05-12 13:25:46,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 407 transitions, 5986 flow [2024-05-12 13:25:46,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:25:46,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:25:46,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 245 transitions. [2024-05-12 13:25:46,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-05-12 13:25:46,373 INFO L175 Difference]: Start difference. First operand has 179 places, 343 transitions, 4763 flow. Second operand 10 states and 245 transitions. [2024-05-12 13:25:46,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 407 transitions, 5986 flow [2024-05-12 13:25:46,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 407 transitions, 5848 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-05-12 13:25:46,744 INFO L231 Difference]: Finished difference. Result has 184 places, 345 transitions, 4805 flow [2024-05-12 13:25:46,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4641, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4805, PETRI_PLACES=184, PETRI_TRANSITIONS=345} [2024-05-12 13:25:46,745 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 129 predicate places. [2024-05-12 13:25:46,745 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 345 transitions, 4805 flow [2024-05-12 13:25:46,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:46,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:46,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:46,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-05-12 13:25:46,746 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:25:46,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:46,746 INFO L85 PathProgramCache]: Analyzing trace with hash 121756996, now seen corresponding path program 1 times [2024-05-12 13:25:46,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:46,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965182306] [2024-05-12 13:25:46,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:46,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:46,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:47,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:47,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:47,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965182306] [2024-05-12 13:25:47,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965182306] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:47,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:47,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:25:47,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756609027] [2024-05-12 13:25:47,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:47,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:25:47,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:47,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:25:47,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:25:47,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:25:47,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 345 transitions, 4805 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:47,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:47,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:25:47,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:50,103 INFO L124 PetriNetUnfolderBase]: 8123/12686 cut-off events. [2024-05-12 13:25:50,103 INFO L125 PetriNetUnfolderBase]: For 228281/228294 co-relation queries the response was YES. [2024-05-12 13:25:50,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79352 conditions, 12686 events. 8123/12686 cut-off events. For 228281/228294 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 82696 event pairs, 1688 based on Foata normal form. 16/12413 useless extension candidates. Maximal degree in co-relation 79267. Up to 8690 conditions per place. [2024-05-12 13:25:50,270 INFO L140 encePairwiseOnDemand]: 31/49 looper letters, 333 selfloop transitions, 133 changer transitions 0/476 dead transitions. [2024-05-12 13:25:50,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 476 transitions, 7233 flow [2024-05-12 13:25:50,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:25:50,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:25:50,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 296 transitions. [2024-05-12 13:25:50,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.549165120593692 [2024-05-12 13:25:50,271 INFO L175 Difference]: Start difference. First operand has 184 places, 345 transitions, 4805 flow. Second operand 11 states and 296 transitions. [2024-05-12 13:25:50,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 476 transitions, 7233 flow [2024-05-12 13:25:50,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 476 transitions, 7095 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-05-12 13:25:50,725 INFO L231 Difference]: Finished difference. Result has 192 places, 369 transitions, 5430 flow [2024-05-12 13:25:50,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4667, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5430, PETRI_PLACES=192, PETRI_TRANSITIONS=369} [2024-05-12 13:25:50,727 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 137 predicate places. [2024-05-12 13:25:50,727 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 369 transitions, 5430 flow [2024-05-12 13:25:50,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:50,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:50,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:50,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-05-12 13:25:50,728 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:25:50,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:50,728 INFO L85 PathProgramCache]: Analyzing trace with hash 2067112106, now seen corresponding path program 3 times [2024-05-12 13:25:50,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:50,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399512934] [2024-05-12 13:25:50,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:50,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:50,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:51,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:51,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:51,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399512934] [2024-05-12 13:25:51,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399512934] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:51,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:51,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:25:51,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212599882] [2024-05-12 13:25:51,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:51,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:25:51,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:51,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:25:51,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:25:51,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:25:51,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 369 transitions, 5430 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 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) [2024-05-12 13:25:51,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:51,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:25:51,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:53,528 INFO L124 PetriNetUnfolderBase]: 8392/12779 cut-off events. [2024-05-12 13:25:53,529 INFO L125 PetriNetUnfolderBase]: For 259805/259837 co-relation queries the response was YES. [2024-05-12 13:25:53,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86202 conditions, 12779 events. 8392/12779 cut-off events. For 259805/259837 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 80294 event pairs, 1332 based on Foata normal form. 28/12590 useless extension candidates. Maximal degree in co-relation 86111. Up to 10655 conditions per place. [2024-05-12 13:25:53,685 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 317 selfloop transitions, 112 changer transitions 0/439 dead transitions. [2024-05-12 13:25:53,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 439 transitions, 6970 flow [2024-05-12 13:25:53,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:25:53,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:25:53,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-05-12 13:25:53,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5153061224489796 [2024-05-12 13:25:53,686 INFO L175 Difference]: Start difference. First operand has 192 places, 369 transitions, 5430 flow. Second operand 8 states and 202 transitions. [2024-05-12 13:25:53,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 439 transitions, 6970 flow [2024-05-12 13:25:54,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 439 transitions, 6837 flow, removed 41 selfloop flow, removed 3 redundant places. [2024-05-12 13:25:54,158 INFO L231 Difference]: Finished difference. Result has 199 places, 391 transitions, 5901 flow [2024-05-12 13:25:54,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5297, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5901, PETRI_PLACES=199, PETRI_TRANSITIONS=391} [2024-05-12 13:25:54,158 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 144 predicate places. [2024-05-12 13:25:54,158 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 391 transitions, 5901 flow [2024-05-12 13:25:54,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 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) [2024-05-12 13:25:54,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:54,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:54,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-05-12 13:25:54,159 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:25:54,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:54,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1673004704, now seen corresponding path program 4 times [2024-05-12 13:25:54,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:54,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912201275] [2024-05-12 13:25:54,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:54,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:54,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:54,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:54,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:54,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912201275] [2024-05-12 13:25:54,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912201275] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:54,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:54,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:25:54,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602482099] [2024-05-12 13:25:54,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:54,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:25:54,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:54,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:25:54,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:25:54,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:25:54,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 391 transitions, 5901 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 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) [2024-05-12 13:25:54,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:54,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:25:54,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:57,206 INFO L124 PetriNetUnfolderBase]: 8806/14181 cut-off events. [2024-05-12 13:25:57,207 INFO L125 PetriNetUnfolderBase]: For 302737/302772 co-relation queries the response was YES. [2024-05-12 13:25:57,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93838 conditions, 14181 events. 8806/14181 cut-off events. For 302737/302772 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 97234 event pairs, 2393 based on Foata normal form. 32/13779 useless extension candidates. Maximal degree in co-relation 93743. Up to 11303 conditions per place. [2024-05-12 13:25:57,396 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 325 selfloop transitions, 121 changer transitions 0/456 dead transitions. [2024-05-12 13:25:57,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 456 transitions, 7537 flow [2024-05-12 13:25:57,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:25:57,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:25:57,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-05-12 13:25:57,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5204081632653061 [2024-05-12 13:25:57,397 INFO L175 Difference]: Start difference. First operand has 199 places, 391 transitions, 5901 flow. Second operand 8 states and 204 transitions. [2024-05-12 13:25:57,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 456 transitions, 7537 flow [2024-05-12 13:25:58,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 456 transitions, 7225 flow, removed 112 selfloop flow, removed 4 redundant places. [2024-05-12 13:25:58,063 INFO L231 Difference]: Finished difference. Result has 204 places, 407 transitions, 6295 flow [2024-05-12 13:25:58,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5719, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6295, PETRI_PLACES=204, PETRI_TRANSITIONS=407} [2024-05-12 13:25:58,063 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 149 predicate places. [2024-05-12 13:25:58,063 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 407 transitions, 6295 flow [2024-05-12 13:25:58,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 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) [2024-05-12 13:25:58,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:58,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:58,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-05-12 13:25:58,064 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:25:58,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:58,064 INFO L85 PathProgramCache]: Analyzing trace with hash 728307394, now seen corresponding path program 5 times [2024-05-12 13:25:58,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:58,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184631887] [2024-05-12 13:25:58,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:58,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:58,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:58,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:58,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:58,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184631887] [2024-05-12 13:25:58,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184631887] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:58,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:58,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:25:58,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214910128] [2024-05-12 13:25:58,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:58,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:25:58,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:58,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:25:58,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:25:58,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:25:58,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 407 transitions, 6295 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 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) [2024-05-12 13:25:58,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:58,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:25:58,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:26:01,167 INFO L124 PetriNetUnfolderBase]: 8847/14301 cut-off events. [2024-05-12 13:26:01,167 INFO L125 PetriNetUnfolderBase]: For 301566/301609 co-relation queries the response was YES. [2024-05-12 13:26:01,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94976 conditions, 14301 events. 8847/14301 cut-off events. For 301566/301609 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 98648 event pairs, 2481 based on Foata normal form. 40/13890 useless extension candidates. Maximal degree in co-relation 94879. Up to 11817 conditions per place. [2024-05-12 13:26:01,362 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 346 selfloop transitions, 99 changer transitions 0/455 dead transitions. [2024-05-12 13:26:01,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 455 transitions, 7521 flow [2024-05-12 13:26:01,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:26:01,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:26:01,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-05-12 13:26:01,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5153061224489796 [2024-05-12 13:26:01,364 INFO L175 Difference]: Start difference. First operand has 204 places, 407 transitions, 6295 flow. Second operand 8 states and 202 transitions. [2024-05-12 13:26:01,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 455 transitions, 7521 flow [2024-05-12 13:26:02,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 455 transitions, 7336 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-05-12 13:26:02,027 INFO L231 Difference]: Finished difference. Result has 207 places, 411 transitions, 6435 flow [2024-05-12 13:26:02,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6110, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6435, PETRI_PLACES=207, PETRI_TRANSITIONS=411} [2024-05-12 13:26:02,028 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 152 predicate places. [2024-05-12 13:26:02,028 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 411 transitions, 6435 flow [2024-05-12 13:26:02,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 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) [2024-05-12 13:26:02,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:26:02,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:26:02,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-05-12 13:26:02,029 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:26:02,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:26:02,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1672944130, now seen corresponding path program 2 times [2024-05-12 13:26:02,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:26:02,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745564407] [2024-05-12 13:26:02,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:26:02,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:26:02,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:26:02,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:26:02,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:26:02,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745564407] [2024-05-12 13:26:02,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745564407] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:26:02,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:26:02,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:26:02,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776111819] [2024-05-12 13:26:02,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:26:02,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:26:02,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:26:02,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:26:02,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:26:02,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:26:02,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 411 transitions, 6435 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 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) [2024-05-12 13:26:02,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:26:02,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:26:02,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:26:05,288 INFO L124 PetriNetUnfolderBase]: 9396/14595 cut-off events. [2024-05-12 13:26:05,288 INFO L125 PetriNetUnfolderBase]: For 314547/314576 co-relation queries the response was YES. [2024-05-12 13:26:05,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100621 conditions, 14595 events. 9396/14595 cut-off events. For 314547/314576 co-relation queries the response was YES. Maximal size of possible extension queue 606. Compared 96913 event pairs, 1768 based on Foata normal form. 30/14365 useless extension candidates. Maximal degree in co-relation 100523. Up to 8715 conditions per place. [2024-05-12 13:26:05,466 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 336 selfloop transitions, 183 changer transitions 0/529 dead transitions. [2024-05-12 13:26:05,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 529 transitions, 8944 flow [2024-05-12 13:26:05,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:26:05,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:26:05,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 224 transitions. [2024-05-12 13:26:05,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-05-12 13:26:05,467 INFO L175 Difference]: Start difference. First operand has 207 places, 411 transitions, 6435 flow. Second operand 8 states and 224 transitions. [2024-05-12 13:26:05,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 529 transitions, 8944 flow [2024-05-12 13:26:06,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 529 transitions, 8693 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-05-12 13:26:06,200 INFO L231 Difference]: Finished difference. Result has 212 places, 448 transitions, 7236 flow [2024-05-12 13:26:06,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6184, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7236, PETRI_PLACES=212, PETRI_TRANSITIONS=448} [2024-05-12 13:26:06,200 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 157 predicate places. [2024-05-12 13:26:06,201 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 448 transitions, 7236 flow [2024-05-12 13:26:06,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 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) [2024-05-12 13:26:06,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:26:06,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:26:06,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-05-12 13:26:06,201 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:26:06,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:26:06,201 INFO L85 PathProgramCache]: Analyzing trace with hash -774133092, now seen corresponding path program 3 times [2024-05-12 13:26:06,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:26:06,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315465495] [2024-05-12 13:26:06,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:26:06,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:26:06,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:26:06,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:26:06,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:26:06,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315465495] [2024-05-12 13:26:06,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315465495] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:26:06,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:26:06,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:26:06,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111131720] [2024-05-12 13:26:06,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:26:06,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:26:06,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:26:06,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:26:06,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:26:07,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:26:07,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 448 transitions, 7236 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:07,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:26:07,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:26:07,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:26:10,172 INFO L124 PetriNetUnfolderBase]: 9647/15268 cut-off events. [2024-05-12 13:26:10,173 INFO L125 PetriNetUnfolderBase]: For 356549/356562 co-relation queries the response was YES. [2024-05-12 13:26:10,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109666 conditions, 15268 events. 9647/15268 cut-off events. For 356549/356562 co-relation queries the response was YES. Maximal size of possible extension queue 653. Compared 105157 event pairs, 1943 based on Foata normal form. 18/14905 useless extension candidates. Maximal degree in co-relation 109564. Up to 11231 conditions per place. [2024-05-12 13:26:10,397 INFO L140 encePairwiseOnDemand]: 31/49 looper letters, 418 selfloop transitions, 133 changer transitions 0/561 dead transitions. [2024-05-12 13:26:10,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 561 transitions, 9747 flow [2024-05-12 13:26:10,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:26:10,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:26:10,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 269 transitions. [2024-05-12 13:26:10,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5489795918367347 [2024-05-12 13:26:10,398 INFO L175 Difference]: Start difference. First operand has 212 places, 448 transitions, 7236 flow. Second operand 10 states and 269 transitions. [2024-05-12 13:26:10,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 561 transitions, 9747 flow [2024-05-12 13:26:11,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 561 transitions, 9613 flow, removed 53 selfloop flow, removed 2 redundant places. [2024-05-12 13:26:11,186 INFO L231 Difference]: Finished difference. Result has 221 places, 460 transitions, 7654 flow [2024-05-12 13:26:11,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=7128, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7654, PETRI_PLACES=221, PETRI_TRANSITIONS=460} [2024-05-12 13:26:11,187 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 166 predicate places. [2024-05-12 13:26:11,187 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 460 transitions, 7654 flow [2024-05-12 13:26:11,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:11,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:26:11,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:26:11,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-05-12 13:26:11,188 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:26:11,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:26:11,188 INFO L85 PathProgramCache]: Analyzing trace with hash -801654148, now seen corresponding path program 1 times [2024-05-12 13:26:11,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:26:11,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074179526] [2024-05-12 13:26:11,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:26:11,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:26:11,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:26:12,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:26:12,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:26:12,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074179526] [2024-05-12 13:26:12,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074179526] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:26:12,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:26:12,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:26:12,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124013514] [2024-05-12 13:26:12,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:26:12,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:26:12,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:26:12,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:26:12,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:26:12,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:26:12,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 460 transitions, 7654 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:12,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:26:12,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:26:12,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:26:15,741 INFO L124 PetriNetUnfolderBase]: 9795/15462 cut-off events. [2024-05-12 13:26:15,741 INFO L125 PetriNetUnfolderBase]: For 379191/379210 co-relation queries the response was YES. [2024-05-12 13:26:15,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112176 conditions, 15462 events. 9795/15462 cut-off events. For 379191/379210 co-relation queries the response was YES. Maximal size of possible extension queue 656. Compared 106215 event pairs, 2035 based on Foata normal form. 30/15130 useless extension candidates. Maximal degree in co-relation 112071. Up to 11224 conditions per place. [2024-05-12 13:26:15,961 INFO L140 encePairwiseOnDemand]: 32/49 looper letters, 407 selfloop transitions, 168 changer transitions 0/585 dead transitions. [2024-05-12 13:26:15,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 585 transitions, 10339 flow [2024-05-12 13:26:15,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:26:15,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:26:15,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 240 transitions. [2024-05-12 13:26:15,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54421768707483 [2024-05-12 13:26:15,962 INFO L175 Difference]: Start difference. First operand has 221 places, 460 transitions, 7654 flow. Second operand 9 states and 240 transitions. [2024-05-12 13:26:15,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 585 transitions, 10339 flow [2024-05-12 13:26:16,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 585 transitions, 10159 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-05-12 13:26:16,714 INFO L231 Difference]: Finished difference. Result has 226 places, 497 transitions, 8487 flow [2024-05-12 13:26:16,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=7474, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8487, PETRI_PLACES=226, PETRI_TRANSITIONS=497} [2024-05-12 13:26:16,715 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 171 predicate places. [2024-05-12 13:26:16,715 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 497 transitions, 8487 flow [2024-05-12 13:26:16,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:16,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:26:16,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:26:16,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-05-12 13:26:16,716 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:26:16,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:26:16,716 INFO L85 PathProgramCache]: Analyzing trace with hash -767699352, now seen corresponding path program 4 times [2024-05-12 13:26:16,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:26:16,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657075208] [2024-05-12 13:26:16,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:26:16,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:26:16,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:26:17,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:26:17,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:26:17,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657075208] [2024-05-12 13:26:17,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657075208] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:26:17,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:26:17,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:26:17,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146509181] [2024-05-12 13:26:17,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:26:17,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:26:17,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:26:17,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:26:17,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:26:17,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:26:17,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 497 transitions, 8487 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:17,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:26:17,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:26:17,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:26:21,086 INFO L124 PetriNetUnfolderBase]: 9855/15538 cut-off events. [2024-05-12 13:26:21,086 INFO L125 PetriNetUnfolderBase]: For 403571/403590 co-relation queries the response was YES. [2024-05-12 13:26:21,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117109 conditions, 15538 events. 9855/15538 cut-off events. For 403571/403590 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 106915 event pairs, 1899 based on Foata normal form. 24/15203 useless extension candidates. Maximal degree in co-relation 117001. Up to 11785 conditions per place. [2024-05-12 13:26:21,292 INFO L140 encePairwiseOnDemand]: 32/49 looper letters, 448 selfloop transitions, 125 changer transitions 0/583 dead transitions. [2024-05-12 13:26:21,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 583 transitions, 10584 flow [2024-05-12 13:26:21,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:26:21,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:26:21,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 236 transitions. [2024-05-12 13:26:21,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5351473922902494 [2024-05-12 13:26:21,294 INFO L175 Difference]: Start difference. First operand has 226 places, 497 transitions, 8487 flow. Second operand 9 states and 236 transitions. [2024-05-12 13:26:21,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 583 transitions, 10584 flow [2024-05-12 13:26:22,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 583 transitions, 10476 flow, removed 41 selfloop flow, removed 3 redundant places. [2024-05-12 13:26:22,247 INFO L231 Difference]: Finished difference. Result has 232 places, 501 transitions, 8733 flow [2024-05-12 13:26:22,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=8379, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8733, PETRI_PLACES=232, PETRI_TRANSITIONS=501} [2024-05-12 13:26:22,247 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 177 predicate places. [2024-05-12 13:26:22,248 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 501 transitions, 8733 flow [2024-05-12 13:26:22,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:22,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:26:22,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:26:22,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-05-12 13:26:22,248 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:26:22,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:26:22,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1341175425, now seen corresponding path program 1 times [2024-05-12 13:26:22,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:26:22,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477310061] [2024-05-12 13:26:22,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:26:22,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:26:22,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:26:22,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:26:22,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:26:22,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477310061] [2024-05-12 13:26:22,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477310061] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:26:22,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:26:22,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:26:22,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606627201] [2024-05-12 13:26:22,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:26:22,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:26:22,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:26:22,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:26:22,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:26:22,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:26:22,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 501 transitions, 8733 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 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) [2024-05-12 13:26:22,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:26:22,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:26:22,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:26:26,214 INFO L124 PetriNetUnfolderBase]: 9913/15829 cut-off events. [2024-05-12 13:26:26,215 INFO L125 PetriNetUnfolderBase]: For 421595/421597 co-relation queries the response was YES. [2024-05-12 13:26:26,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119279 conditions, 15829 events. 9913/15829 cut-off events. For 421595/421597 co-relation queries the response was YES. Maximal size of possible extension queue 678. Compared 110798 event pairs, 3276 based on Foata normal form. 3/15391 useless extension candidates. Maximal degree in co-relation 119169. Up to 13849 conditions per place. [2024-05-12 13:26:26,395 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 503 selfloop transitions, 30 changer transitions 0/543 dead transitions. [2024-05-12 13:26:26,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 543 transitions, 10294 flow [2024-05-12 13:26:26,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:26:26,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:26:26,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-05-12 13:26:26,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-05-12 13:26:26,397 INFO L175 Difference]: Start difference. First operand has 232 places, 501 transitions, 8733 flow. Second operand 7 states and 168 transitions. [2024-05-12 13:26:26,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 543 transitions, 10294 flow [2024-05-12 13:26:27,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 543 transitions, 9983 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-05-12 13:26:27,159 INFO L231 Difference]: Finished difference. Result has 233 places, 514 transitions, 8811 flow [2024-05-12 13:26:27,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=8436, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8811, PETRI_PLACES=233, PETRI_TRANSITIONS=514} [2024-05-12 13:26:27,160 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 178 predicate places. [2024-05-12 13:26:27,160 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 514 transitions, 8811 flow [2024-05-12 13:26:27,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 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) [2024-05-12 13:26:27,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:26:27,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:26:27,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-05-12 13:26:27,161 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:26:27,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:26:27,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1655365116, now seen corresponding path program 6 times [2024-05-12 13:26:27,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:26:27,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319550124] [2024-05-12 13:26:27,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:26:27,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:26:27,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:26:28,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:26:28,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:26:28,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319550124] [2024-05-12 13:26:28,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319550124] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:26:28,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:26:28,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:26:28,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536143526] [2024-05-12 13:26:28,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:26:28,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:26:28,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:26:28,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:26:28,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:26:28,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:26:28,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 514 transitions, 8811 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:28,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:26:28,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:26:28,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:26:31,817 INFO L124 PetriNetUnfolderBase]: 10008/15926 cut-off events. [2024-05-12 13:26:31,817 INFO L125 PetriNetUnfolderBase]: For 427026/427067 co-relation queries the response was YES. [2024-05-12 13:26:31,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118708 conditions, 15926 events. 10008/15926 cut-off events. For 427026/427067 co-relation queries the response was YES. Maximal size of possible extension queue 648. Compared 110198 event pairs, 2215 based on Foata normal form. 40/15521 useless extension candidates. Maximal degree in co-relation 118596. Up to 12635 conditions per place. [2024-05-12 13:26:32,015 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 436 selfloop transitions, 133 changer transitions 0/579 dead transitions. [2024-05-12 13:26:32,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 579 transitions, 10604 flow [2024-05-12 13:26:32,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:26:32,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:26:32,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-05-12 13:26:32,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5127551020408163 [2024-05-12 13:26:32,016 INFO L175 Difference]: Start difference. First operand has 233 places, 514 transitions, 8811 flow. Second operand 8 states and 201 transitions. [2024-05-12 13:26:32,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 579 transitions, 10604 flow [2024-05-12 13:26:32,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 579 transitions, 10502 flow, removed 35 selfloop flow, removed 3 redundant places. [2024-05-12 13:26:32,965 INFO L231 Difference]: Finished difference. Result has 240 places, 529 transitions, 9371 flow [2024-05-12 13:26:32,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=8709, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9371, PETRI_PLACES=240, PETRI_TRANSITIONS=529} [2024-05-12 13:26:32,965 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 185 predicate places. [2024-05-12 13:26:32,966 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 529 transitions, 9371 flow [2024-05-12 13:26:32,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:32,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:26:32,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:26:32,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-05-12 13:26:32,966 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:26:32,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:26:32,967 INFO L85 PathProgramCache]: Analyzing trace with hash 2069869362, now seen corresponding path program 5 times [2024-05-12 13:26:32,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:26:32,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568340325] [2024-05-12 13:26:32,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:26:32,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:26:32,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:26:33,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:26:33,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:26:33,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568340325] [2024-05-12 13:26:33,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568340325] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:26:33,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:26:33,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:26:33,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912945891] [2024-05-12 13:26:33,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:26:33,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:26:33,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:26:33,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:26:33,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:26:34,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:26:34,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 529 transitions, 9371 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:34,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:26:34,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:26:34,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:26:37,698 INFO L124 PetriNetUnfolderBase]: 10596/16812 cut-off events. [2024-05-12 13:26:37,698 INFO L125 PetriNetUnfolderBase]: For 474968/475005 co-relation queries the response was YES. [2024-05-12 13:26:37,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128245 conditions, 16812 events. 10596/16812 cut-off events. For 474968/475005 co-relation queries the response was YES. Maximal size of possible extension queue 683. Compared 116551 event pairs, 2396 based on Foata normal form. 44/16416 useless extension candidates. Maximal degree in co-relation 128130. Up to 10291 conditions per place. [2024-05-12 13:26:37,908 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 357 selfloop transitions, 285 changer transitions 0/652 dead transitions. [2024-05-12 13:26:37,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 652 transitions, 12243 flow [2024-05-12 13:26:37,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:26:37,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:26:37,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 270 transitions. [2024-05-12 13:26:37,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2024-05-12 13:26:37,909 INFO L175 Difference]: Start difference. First operand has 240 places, 529 transitions, 9371 flow. Second operand 10 states and 270 transitions. [2024-05-12 13:26:37,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 652 transitions, 12243 flow [2024-05-12 13:26:38,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 652 transitions, 12086 flow, removed 51 selfloop flow, removed 4 redundant places. [2024-05-12 13:26:39,077 INFO L231 Difference]: Finished difference. Result has 248 places, 556 transitions, 10363 flow [2024-05-12 13:26:39,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=9238, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=264, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10363, PETRI_PLACES=248, PETRI_TRANSITIONS=556} [2024-05-12 13:26:39,077 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 193 predicate places. [2024-05-12 13:26:39,077 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 556 transitions, 10363 flow [2024-05-12 13:26:39,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:39,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:26:39,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:26:39,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-05-12 13:26:39,078 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:26:39,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:26:39,078 INFO L85 PathProgramCache]: Analyzing trace with hash 2069869238, now seen corresponding path program 7 times [2024-05-12 13:26:39,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:26:39,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873086168] [2024-05-12 13:26:39,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:26:39,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:26:39,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:26:39,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:26:39,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:26:39,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873086168] [2024-05-12 13:26:39,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873086168] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:26:39,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:26:39,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:26:39,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160427968] [2024-05-12 13:26:39,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:26:39,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:26:39,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:26:39,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:26:39,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:26:40,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-05-12 13:26:40,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 556 transitions, 10363 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:40,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:26:40,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-05-12 13:26:40,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:26:43,736 INFO L124 PetriNetUnfolderBase]: 10706/16807 cut-off events. [2024-05-12 13:26:43,736 INFO L125 PetriNetUnfolderBase]: For 495678/495709 co-relation queries the response was YES. [2024-05-12 13:26:43,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135389 conditions, 16807 events. 10706/16807 cut-off events. For 495678/495709 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 114954 event pairs, 2669 based on Foata normal form. 34/16448 useless extension candidates. Maximal degree in co-relation 135271. Up to 14278 conditions per place. [2024-05-12 13:26:43,954 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 489 selfloop transitions, 120 changer transitions 0/619 dead transitions. [2024-05-12 13:26:43,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 619 transitions, 12229 flow [2024-05-12 13:26:43,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:26:43,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:26:43,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-05-12 13:26:43,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5076530612244898 [2024-05-12 13:26:43,955 INFO L175 Difference]: Start difference. First operand has 248 places, 556 transitions, 10363 flow. Second operand 8 states and 199 transitions. [2024-05-12 13:26:43,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 619 transitions, 12229 flow [2024-05-12 13:26:45,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 619 transitions, 11828 flow, removed 79 selfloop flow, removed 5 redundant places. [2024-05-12 13:26:45,341 INFO L231 Difference]: Finished difference. Result has 251 places, 570 transitions, 10619 flow [2024-05-12 13:26:45,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=9962, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10619, PETRI_PLACES=251, PETRI_TRANSITIONS=570} [2024-05-12 13:26:45,341 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 196 predicate places. [2024-05-12 13:26:45,342 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 570 transitions, 10619 flow [2024-05-12 13:26:45,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:45,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:26:45,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:26:45,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-05-12 13:26:45,343 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:26:45,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:26:45,343 INFO L85 PathProgramCache]: Analyzing trace with hash -2111479028, now seen corresponding path program 8 times [2024-05-12 13:26:45,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:26:45,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173945721] [2024-05-12 13:26:45,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:26:45,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:26:45,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat