./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix021_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/mix021_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/mix021_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-05-07_14-17-48.files/protection/mix021_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 13:12:40,033 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 13:12:40,075 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 13:12:40,078 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 13:12:40,078 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 13:12:40,097 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 13:12:40,098 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 13:12:40,098 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 13:12:40,099 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 13:12:40,102 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 13:12:40,102 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 13:12:40,102 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 13:12:40,103 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 13:12:40,104 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 13:12:40,104 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 13:12:40,104 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 13:12:40,104 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 13:12:40,105 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 13:12:40,105 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 13:12:40,105 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 13:12:40,105 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 13:12:40,106 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 13:12:40,106 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 13:12:40,106 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 13:12:40,106 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 13:12:40,106 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 13:12:40,106 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 13:12:40,107 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 13:12:40,107 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 13:12:40,108 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 13:12:40,108 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 13:12:40,109 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 13:12:40,109 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:12:40,109 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 13:12:40,109 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 13:12:40,109 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 13:12:40,109 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 13:12:40,110 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 13:12:40,110 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 13:12:40,110 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 13:12:40,110 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 13:12:40,110 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 13:12:40,110 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 13:12:40,110 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 13:12:40,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 13:12:40,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 13:12:40,355 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 13:12:40,355 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 13:12:40,356 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 13:12:40,357 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/mix021_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-05-12 13:12:40,570 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 13:12:40,573 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 13:12:40,574 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix021_power.oepc_pso.oepc_rmo.oepc.i [2024-05-12 13:12:41,568 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 13:12:41,800 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 13:12:41,803 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix021_power.oepc_pso.oepc_rmo.oepc.i [2024-05-12 13:12:41,822 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72e20291e/fae882c851a2403c95ac0b15f8535687/FLAGeb9ef4cee [2024-05-12 13:12:41,835 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72e20291e/fae882c851a2403c95ac0b15f8535687 [2024-05-12 13:12:41,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 13:12:41,837 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 13:12:41,840 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 13:12:41,840 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 13:12:41,844 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 13:12:41,844 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:12:40" (1/2) ... [2024-05-12 13:12:41,845 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44cea62f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:12:41, skipping insertion in model container [2024-05-12 13:12:41,845 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:12:40" (1/2) ... [2024-05-12 13:12:41,847 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6350eda and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:12:41, skipping insertion in model container [2024-05-12 13:12:41,847 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:12:41" (2/2) ... [2024-05-12 13:12:41,847 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44cea62f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:12:41, skipping insertion in model container [2024-05-12 13:12:41,848 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:12:41" (2/2) ... [2024-05-12 13:12:41,848 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 13:12:41,937 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 13:12:41,938 INFO L97 edCorrectnessWitness]: Location invariant before [L871-L871] (((((((((((((((((((((! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2))) && (! multithreaded || ((0 <= a$mem_tmp && a$mem_tmp <= 1) && (a$mem_tmp == 0 || a$mem_tmp == 1)))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= a$w_buff1 && a$w_buff1 <= 1) && (a$w_buff1 == 0 || a$w_buff1 == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= a$w_buff0 && a$w_buff0 <= 1) && (a$w_buff0 == 0 || a$w_buff0 == 1)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-05-12 13:12:41,938 INFO L97 edCorrectnessWitness]: Location invariant before [L869-L869] (((((((((((((((((((((! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2))) && (! multithreaded || ((0 <= a$mem_tmp && a$mem_tmp <= 1) && (a$mem_tmp == 0 || a$mem_tmp == 1)))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= a$w_buff1 && a$w_buff1 <= 1) && (a$w_buff1 == 0 || a$w_buff1 == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= a$w_buff0 && a$w_buff0 <= 1) && (a$w_buff0 == 0 || a$w_buff0 == 1)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-05-12 13:12:41,938 INFO L97 edCorrectnessWitness]: Location invariant before [L872-L872] (((((((((((((((((((((! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2))) && (! multithreaded || ((0 <= a$mem_tmp && a$mem_tmp <= 1) && (a$mem_tmp == 0 || a$mem_tmp == 1)))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= a$w_buff1 && a$w_buff1 <= 1) && (a$w_buff1 == 0 || a$w_buff1 == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= a$w_buff0 && a$w_buff0 <= 1) && (a$w_buff0 == 0 || a$w_buff0 == 1)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-05-12 13:12:41,939 INFO L97 edCorrectnessWitness]: Location invariant before [L867-L867] (((((((((((((((((((((! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2))) && (! multithreaded || ((0 <= a$mem_tmp && a$mem_tmp <= 1) && (a$mem_tmp == 0 || a$mem_tmp == 1)))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= a$w_buff1 && a$w_buff1 <= 1) && (a$w_buff1 == 0 || a$w_buff1 == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= a$w_buff0 && a$w_buff0 <= 1) && (a$w_buff0 == 0 || a$w_buff0 == 1)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-05-12 13:12:41,939 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 13:12:41,939 INFO L106 edCorrectnessWitness]: ghost_update [L865-L865] multithreaded = 1; [2024-05-12 13:12:41,980 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 13:12:42,117 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/mix021_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-05-12 13:12:42,291 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:12:42,301 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-05-12 13:12:42,332 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/mix021_power.oepc_pso.oepc_rmo.oepc.i[969,982] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 13:12:42,417 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:12:42,455 INFO L206 MainTranslator]: Completed translation [2024-05-12 13:12:42,456 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:12:42 WrapperNode [2024-05-12 13:12:42,456 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 13:12:42,457 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 13:12:42,457 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 13:12:42,457 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 13:12:42,462 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:12:42" (1/1) ... [2024-05-12 13:12:42,490 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:12:42" (1/1) ... [2024-05-12 13:12:42,531 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 150 [2024-05-12 13:12:42,542 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 13:12:42,543 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 13:12:42,544 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 13:12:42,544 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 13:12:42,552 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:12:42" (1/1) ... [2024-05-12 13:12:42,553 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:12:42" (1/1) ... [2024-05-12 13:12:42,564 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:12:42" (1/1) ... [2024-05-12 13:12:42,583 INFO L175 MemorySlicer]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-05-12 13:12:42,588 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:12:42" (1/1) ... [2024-05-12 13:12:42,588 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:12:42" (1/1) ... [2024-05-12 13:12:42,601 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:12:42" (1/1) ... [2024-05-12 13:12:42,608 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:12:42" (1/1) ... [2024-05-12 13:12:42,612 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:12:42" (1/1) ... [2024-05-12 13:12:42,617 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:12:42" (1/1) ... [2024-05-12 13:12:42,621 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 13:12:42,624 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 13:12:42,624 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 13:12:42,625 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 13:12:42,626 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:12:42" (1/1) ... [2024-05-12 13:12:42,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:12:42,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 13:12:42,656 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 13:12:42,674 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 13:12:42,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 13:12:42,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 13:12:42,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 13:12:42,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 13:12:42,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-05-12 13:12:42,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 13:12:42,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 13:12:42,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 13:12:42,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 13:12:42,687 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-05-12 13:12:42,687 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-05-12 13:12:42,687 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-05-12 13:12:42,687 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-05-12 13:12:42,687 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-05-12 13:12:42,688 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-05-12 13:12:42,688 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-05-12 13:12:42,688 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-05-12 13:12:42,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 13:12:42,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 13:12:42,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 13:12:42,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 13:12:42,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-05-12 13:12:42,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 13:12:42,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 13:12:42,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 13:12:42,690 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 13:12:42,800 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 13:12:42,802 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 13:12:43,173 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 13:12:43,173 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 13:12:43,335 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 13:12:43,335 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 13:12:43,336 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:12:43 BoogieIcfgContainer [2024-05-12 13:12:43,336 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 13:12:43,338 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 13:12:43,338 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 13:12:43,340 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 13:12:43,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:12:40" (1/4) ... [2024-05-12 13:12:43,341 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d7f25fe and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:12:43, skipping insertion in model container [2024-05-12 13:12:43,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 01:12:41" (2/4) ... [2024-05-12 13:12:43,341 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d7f25fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:12:43, skipping insertion in model container [2024-05-12 13:12:43,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:12:42" (3/4) ... [2024-05-12 13:12:43,342 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d7f25fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:12:43, skipping insertion in model container [2024-05-12 13:12:43,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:12:43" (4/4) ... [2024-05-12 13:12:43,343 INFO L112 eAbstractionObserver]: Analyzing ICFG mix021_power.oepc_pso.oepc_rmo.oepc.i [2024-05-12 13:12:43,355 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 13:12:43,355 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-05-12 13:12:43,355 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 13:12:43,432 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 13:12:43,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 59 transitions, 134 flow [2024-05-12 13:12:43,488 INFO L124 PetriNetUnfolderBase]: 1/55 cut-off events. [2024-05-12 13:12:43,488 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:12:43,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 55 events. 1/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 96 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2024-05-12 13:12:43,492 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 59 transitions, 134 flow [2024-05-12 13:12:43,495 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 55 transitions, 122 flow [2024-05-12 13:12:43,513 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 13:12:43,528 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;@779a1998, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 13:12:43,528 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-05-12 13:12:43,536 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 13:12:43,537 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 13:12:43,537 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:12:43,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:12:43,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 13:12:43,539 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:12:43,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:12:43,547 INFO L85 PathProgramCache]: Analyzing trace with hash -602594808, now seen corresponding path program 1 times [2024-05-12 13:12:43,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:12:43,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535810217] [2024-05-12 13:12:43,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:12:43,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:12:43,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:12:43,892 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 13:12:43,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:12:43,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535810217] [2024-05-12 13:12:43,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535810217] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:12:43,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:12:43,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:12:43,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268329851] [2024-05-12 13:12:43,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:12:43,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:12:43,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:12:43,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:12:43,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:12:43,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 59 [2024-05-12 13:12:43,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 55 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 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 13:12:43,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:12:43,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 59 [2024-05-12 13:12:43,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:12:44,590 INFO L124 PetriNetUnfolderBase]: 2590/4340 cut-off events. [2024-05-12 13:12:44,591 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-05-12 13:12:44,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8065 conditions, 4340 events. 2590/4340 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 28792 event pairs, 2121 based on Foata normal form. 108/4275 useless extension candidates. Maximal degree in co-relation 8049. Up to 2899 conditions per place. [2024-05-12 13:12:44,615 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 45 selfloop transitions, 2 changer transitions 2/74 dead transitions. [2024-05-12 13:12:44,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 74 transitions, 267 flow [2024-05-12 13:12:44,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:12:44,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:12:44,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 139 transitions. [2024-05-12 13:12:44,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7853107344632768 [2024-05-12 13:12:44,626 INFO L175 Difference]: Start difference. First operand has 67 places, 55 transitions, 122 flow. Second operand 3 states and 139 transitions. [2024-05-12 13:12:44,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 74 transitions, 267 flow [2024-05-12 13:12:44,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 74 transitions, 260 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-05-12 13:12:44,634 INFO L231 Difference]: Finished difference. Result has 64 places, 52 transitions, 116 flow [2024-05-12 13:12:44,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=64, PETRI_TRANSITIONS=52} [2024-05-12 13:12:44,639 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -3 predicate places. [2024-05-12 13:12:44,640 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 52 transitions, 116 flow [2024-05-12 13:12:44,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 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 13:12:44,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:12:44,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 13:12:44,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 13:12:44,641 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:12:44,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:12:44,642 INFO L85 PathProgramCache]: Analyzing trace with hash -602594844, now seen corresponding path program 1 times [2024-05-12 13:12:44,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:12:44,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417826122] [2024-05-12 13:12:44,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:12:44,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:12:44,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:12:45,402 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 13:12:45,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:12:45,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417826122] [2024-05-12 13:12:45,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417826122] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:12:45,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:12:45,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:12:45,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694961904] [2024-05-12 13:12:45,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:12:45,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:12:45,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:12:45,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:12:45,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:12:45,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-05-12 13:12:45,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 52 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 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 13:12:45,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:12:45,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-05-12 13:12:45,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:12:48,287 INFO L124 PetriNetUnfolderBase]: 22331/33912 cut-off events. [2024-05-12 13:12:48,287 INFO L125 PetriNetUnfolderBase]: For 1224/1224 co-relation queries the response was YES. [2024-05-12 13:12:48,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65284 conditions, 33912 events. 22331/33912 cut-off events. For 1224/1224 co-relation queries the response was YES. Maximal size of possible extension queue 1294. Compared 245701 event pairs, 19153 based on Foata normal form. 1/32787 useless extension candidates. Maximal degree in co-relation 65270. Up to 29682 conditions per place. [2024-05-12 13:12:48,490 INFO L140 encePairwiseOnDemand]: 50/59 looper letters, 52 selfloop transitions, 5 changer transitions 0/69 dead transitions. [2024-05-12 13:12:48,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 69 transitions, 272 flow [2024-05-12 13:12:48,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:12:48,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:12:48,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2024-05-12 13:12:48,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.615819209039548 [2024-05-12 13:12:48,499 INFO L175 Difference]: Start difference. First operand has 64 places, 52 transitions, 116 flow. Second operand 3 states and 109 transitions. [2024-05-12 13:12:48,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 69 transitions, 272 flow [2024-05-12 13:12:48,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 69 transitions, 266 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 13:12:48,502 INFO L231 Difference]: Finished difference. Result has 64 places, 56 transitions, 151 flow [2024-05-12 13:12:48,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=64, PETRI_TRANSITIONS=56} [2024-05-12 13:12:48,503 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -3 predicate places. [2024-05-12 13:12:48,503 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 56 transitions, 151 flow [2024-05-12 13:12:48,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 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 13:12:48,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:12:48,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:12:48,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 13:12:48,504 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:12:48,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:12:48,505 INFO L85 PathProgramCache]: Analyzing trace with hash 726985664, now seen corresponding path program 1 times [2024-05-12 13:12:48,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:12:48,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464205644] [2024-05-12 13:12:48,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:12:48,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:12:48,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:12:49,386 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 13:12:49,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:12:49,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464205644] [2024-05-12 13:12:49,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464205644] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:12:49,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:12:49,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 13:12:49,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590301334] [2024-05-12 13:12:49,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:12:49,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 13:12:49,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:12:49,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 13:12:49,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 13:12:49,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-05-12 13:12:49,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 56 transitions, 151 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:49,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:12:49,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-05-12 13:12:49,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:12:51,937 INFO L124 PetriNetUnfolderBase]: 22328/33307 cut-off events. [2024-05-12 13:12:51,937 INFO L125 PetriNetUnfolderBase]: For 4915/4915 co-relation queries the response was YES. [2024-05-12 13:12:52,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69745 conditions, 33307 events. 22328/33307 cut-off events. For 4915/4915 co-relation queries the response was YES. Maximal size of possible extension queue 1252. Compared 232680 event pairs, 15736 based on Foata normal form. 4/32405 useless extension candidates. Maximal degree in co-relation 69730. Up to 29654 conditions per place. [2024-05-12 13:12:52,130 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 67 selfloop transitions, 10 changer transitions 0/89 dead transitions. [2024-05-12 13:12:52,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 89 transitions, 401 flow [2024-05-12 13:12:52,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 13:12:52,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 13:12:52,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2024-05-12 13:12:52,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.597457627118644 [2024-05-12 13:12:52,132 INFO L175 Difference]: Start difference. First operand has 64 places, 56 transitions, 151 flow. Second operand 4 states and 141 transitions. [2024-05-12 13:12:52,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 89 transitions, 401 flow [2024-05-12 13:12:52,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 89 transitions, 392 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 13:12:52,135 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 235 flow [2024-05-12 13:12:52,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=235, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2024-05-12 13:12:52,136 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 1 predicate places. [2024-05-12 13:12:52,136 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 235 flow [2024-05-12 13:12:52,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:52,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:12:52,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:12:52,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 13:12:52,137 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:12:52,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:12:52,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1060825995, now seen corresponding path program 1 times [2024-05-12 13:12:52,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:12:52,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627494324] [2024-05-12 13:12:52,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:12:52,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:12:52,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:12:53,115 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 13:12:53,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:12:53,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627494324] [2024-05-12 13:12:53,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627494324] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:12:53,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:12:53,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 13:12:53,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883240424] [2024-05-12 13:12:53,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:12:53,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 13:12:53,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:12:53,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 13:12:53,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-05-12 13:12:53,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-05-12 13:12:53,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 235 flow. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:53,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:12:53,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-05-12 13:12:53,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:12:55,754 INFO L124 PetriNetUnfolderBase]: 22379/33343 cut-off events. [2024-05-12 13:12:55,755 INFO L125 PetriNetUnfolderBase]: For 14935/14935 co-relation queries the response was YES. [2024-05-12 13:12:55,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77281 conditions, 33343 events. 22379/33343 cut-off events. For 14935/14935 co-relation queries the response was YES. Maximal size of possible extension queue 1243. Compared 231817 event pairs, 13622 based on Foata normal form. 7/32465 useless extension candidates. Maximal degree in co-relation 77263. Up to 29590 conditions per place. [2024-05-12 13:12:56,011 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 88 selfloop transitions, 23 changer transitions 0/123 dead transitions. [2024-05-12 13:12:56,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 123 transitions, 653 flow [2024-05-12 13:12:56,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:12:56,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:12:56,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 184 transitions. [2024-05-12 13:12:56,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6237288135593221 [2024-05-12 13:12:56,014 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 235 flow. Second operand 5 states and 184 transitions. [2024-05-12 13:12:56,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 123 transitions, 653 flow [2024-05-12 13:12:56,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 123 transitions, 638 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-05-12 13:12:56,022 INFO L231 Difference]: Finished difference. Result has 74 places, 80 transitions, 382 flow [2024-05-12 13:12:56,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=382, PETRI_PLACES=74, PETRI_TRANSITIONS=80} [2024-05-12 13:12:56,024 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 7 predicate places. [2024-05-12 13:12:56,024 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 80 transitions, 382 flow [2024-05-12 13:12:56,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:56,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:12:56,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:12:56,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 13:12:56,025 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:12:56,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:12:56,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1474131871, now seen corresponding path program 1 times [2024-05-12 13:12:56,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:12:56,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475313621] [2024-05-12 13:12:56,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:12:56,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:12:56,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:12:57,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:12:57,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:12:57,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475313621] [2024-05-12 13:12:57,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475313621] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:12:57,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:12:57,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:12:57,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779625438] [2024-05-12 13:12:57,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:12:57,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:12:57,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:12:57,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:12:57,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:12:57,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-05-12 13:12:57,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 80 transitions, 382 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 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 13:12:57,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:12:57,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-05-12 13:12:57,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:00,010 INFO L124 PetriNetUnfolderBase]: 22416/33471 cut-off events. [2024-05-12 13:13:00,011 INFO L125 PetriNetUnfolderBase]: For 35621/35627 co-relation queries the response was YES. [2024-05-12 13:13:00,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88734 conditions, 33471 events. 22416/33471 cut-off events. For 35621/35627 co-relation queries the response was YES. Maximal size of possible extension queue 1251. Compared 233679 event pairs, 12019 based on Foata normal form. 11/32577 useless extension candidates. Maximal degree in co-relation 88712. Up to 29588 conditions per place. [2024-05-12 13:13:00,311 INFO L140 encePairwiseOnDemand]: 45/59 looper letters, 101 selfloop transitions, 28 changer transitions 0/141 dead transitions. [2024-05-12 13:13:00,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 141 transitions, 854 flow [2024-05-12 13:13:00,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:13:00,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:13:00,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 218 transitions. [2024-05-12 13:13:00,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.615819209039548 [2024-05-12 13:13:00,313 INFO L175 Difference]: Start difference. First operand has 74 places, 80 transitions, 382 flow. Second operand 6 states and 218 transitions. [2024-05-12 13:13:00,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 141 transitions, 854 flow [2024-05-12 13:13:00,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 141 transitions, 842 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-05-12 13:13:00,326 INFO L231 Difference]: Finished difference. Result has 80 places, 85 transitions, 480 flow [2024-05-12 13:13:00,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=480, PETRI_PLACES=80, PETRI_TRANSITIONS=85} [2024-05-12 13:13:00,327 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 13 predicate places. [2024-05-12 13:13:00,327 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 85 transitions, 480 flow [2024-05-12 13:13:00,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 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 13:13:00,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:00,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:00,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 13:13:00,328 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:13:00,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:00,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1546552938, now seen corresponding path program 1 times [2024-05-12 13:13:00,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:00,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426108266] [2024-05-12 13:13:00,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:00,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:00,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:01,497 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 13:13:01,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:01,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426108266] [2024-05-12 13:13:01,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426108266] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:01,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:01,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:13:01,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275076546] [2024-05-12 13:13:01,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:01,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:13:01,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:01,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:13:01,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:13:01,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-05-12 13:13:01,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 85 transitions, 480 flow. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:01,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:01,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-05-12 13:13:01,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:04,138 INFO L124 PetriNetUnfolderBase]: 22480/31468 cut-off events. [2024-05-12 13:13:04,138 INFO L125 PetriNetUnfolderBase]: For 53638/53644 co-relation queries the response was YES. [2024-05-12 13:13:04,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94614 conditions, 31468 events. 22480/31468 cut-off events. For 53638/53644 co-relation queries the response was YES. Maximal size of possible extension queue 1167. Compared 198104 event pairs, 9487 based on Foata normal form. 18/31323 useless extension candidates. Maximal degree in co-relation 94589. Up to 29541 conditions per place. [2024-05-12 13:13:04,399 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 112 selfloop transitions, 52 changer transitions 0/176 dead transitions. [2024-05-12 13:13:04,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 176 transitions, 1220 flow [2024-05-12 13:13:04,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:13:04,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:13:04,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 249 transitions. [2024-05-12 13:13:04,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6029055690072639 [2024-05-12 13:13:04,401 INFO L175 Difference]: Start difference. First operand has 80 places, 85 transitions, 480 flow. Second operand 7 states and 249 transitions. [2024-05-12 13:13:04,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 176 transitions, 1220 flow [2024-05-12 13:13:04,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 176 transitions, 1150 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-05-12 13:13:04,425 INFO L231 Difference]: Finished difference. Result has 85 places, 108 transitions, 774 flow [2024-05-12 13:13:04,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=774, PETRI_PLACES=85, PETRI_TRANSITIONS=108} [2024-05-12 13:13:04,425 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 18 predicate places. [2024-05-12 13:13:04,426 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 108 transitions, 774 flow [2024-05-12 13:13:04,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:04,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:04,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:04,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 13:13:04,426 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:13:04,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:04,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1487569703, now seen corresponding path program 1 times [2024-05-12 13:13:04,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:04,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755448605] [2024-05-12 13:13:04,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:04,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:04,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:05,216 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 13:13:05,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:05,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755448605] [2024-05-12 13:13:05,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755448605] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:05,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:05,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:13:05,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733913476] [2024-05-12 13:13:05,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:05,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:13:05,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:05,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:13:05,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:13:05,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2024-05-12 13:13:05,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 108 transitions, 774 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 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 13:13:05,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:05,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2024-05-12 13:13:05,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:08,874 INFO L124 PetriNetUnfolderBase]: 26050/38991 cut-off events. [2024-05-12 13:13:08,874 INFO L125 PetriNetUnfolderBase]: For 100507/100507 co-relation queries the response was YES. [2024-05-12 13:13:08,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123280 conditions, 38991 events. 26050/38991 cut-off events. For 100507/100507 co-relation queries the response was YES. Maximal size of possible extension queue 1366. Compared 277066 event pairs, 14138 based on Foata normal form. 3/38084 useless extension candidates. Maximal degree in co-relation 123251. Up to 34508 conditions per place. [2024-05-12 13:13:09,094 INFO L140 encePairwiseOnDemand]: 49/59 looper letters, 102 selfloop transitions, 18 changer transitions 0/131 dead transitions. [2024-05-12 13:13:09,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 131 transitions, 1070 flow [2024-05-12 13:13:09,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:13:09,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:13:09,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 151 transitions. [2024-05-12 13:13:09,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.511864406779661 [2024-05-12 13:13:09,096 INFO L175 Difference]: Start difference. First operand has 85 places, 108 transitions, 774 flow. Second operand 5 states and 151 transitions. [2024-05-12 13:13:09,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 131 transitions, 1070 flow [2024-05-12 13:13:09,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 131 transitions, 978 flow, removed 46 selfloop flow, removed 0 redundant places. [2024-05-12 13:13:09,131 INFO L231 Difference]: Finished difference. Result has 90 places, 108 transitions, 734 flow [2024-05-12 13:13:09,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=734, PETRI_PLACES=90, PETRI_TRANSITIONS=108} [2024-05-12 13:13:09,132 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 23 predicate places. [2024-05-12 13:13:09,132 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 108 transitions, 734 flow [2024-05-12 13:13:09,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 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 13:13:09,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:09,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:09,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 13:13:09,133 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:13:09,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:09,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1157683356, now seen corresponding path program 1 times [2024-05-12 13:13:09,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:09,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219468597] [2024-05-12 13:13:09,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:09,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:09,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:09,955 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 13:13:09,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:09,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219468597] [2024-05-12 13:13:09,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219468597] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:09,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:09,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:13:09,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609990667] [2024-05-12 13:13:09,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:09,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:13:09,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:09,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:13:09,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:13:10,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2024-05-12 13:13:10,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 108 transitions, 734 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 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 13:13:10,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:10,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2024-05-12 13:13:10,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:14,121 INFO L124 PetriNetUnfolderBase]: 26180/39475 cut-off events. [2024-05-12 13:13:14,121 INFO L125 PetriNetUnfolderBase]: For 86580/86580 co-relation queries the response was YES. [2024-05-12 13:13:14,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118147 conditions, 39475 events. 26180/39475 cut-off events. For 86580/86580 co-relation queries the response was YES. Maximal size of possible extension queue 1386. Compared 283017 event pairs, 13403 based on Foata normal form. 14/38572 useless extension candidates. Maximal degree in co-relation 118114. Up to 34328 conditions per place. [2024-05-12 13:13:14,370 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 128 selfloop transitions, 28 changer transitions 0/167 dead transitions. [2024-05-12 13:13:14,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 167 transitions, 1302 flow [2024-05-12 13:13:14,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:13:14,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:13:14,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 194 transitions. [2024-05-12 13:13:14,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5480225988700564 [2024-05-12 13:13:14,372 INFO L175 Difference]: Start difference. First operand has 90 places, 108 transitions, 734 flow. Second operand 6 states and 194 transitions. [2024-05-12 13:13:14,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 167 transitions, 1302 flow [2024-05-12 13:13:14,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 167 transitions, 1249 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-05-12 13:13:14,404 INFO L231 Difference]: Finished difference. Result has 94 places, 122 transitions, 883 flow [2024-05-12 13:13:14,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=883, PETRI_PLACES=94, PETRI_TRANSITIONS=122} [2024-05-12 13:13:14,405 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 27 predicate places. [2024-05-12 13:13:14,405 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 122 transitions, 883 flow [2024-05-12 13:13:14,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 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 13:13:14,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:14,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:14,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 13:13:14,406 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:13:14,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:14,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1557456019, now seen corresponding path program 1 times [2024-05-12 13:13:14,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:14,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619764115] [2024-05-12 13:13:14,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:14,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:15,461 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 13:13:15,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:15,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619764115] [2024-05-12 13:13:15,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619764115] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:15,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:15,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:13:15,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866995034] [2024-05-12 13:13:15,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:15,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:13:15,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:15,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:13:15,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:13:15,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2024-05-12 13:13:15,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 122 transitions, 883 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 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 13:13:15,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:15,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2024-05-12 13:13:15,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:19,683 INFO L124 PetriNetUnfolderBase]: 26209/38955 cut-off events. [2024-05-12 13:13:19,683 INFO L125 PetriNetUnfolderBase]: For 120568/120586 co-relation queries the response was YES. [2024-05-12 13:13:19,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129505 conditions, 38955 events. 26209/38955 cut-off events. For 120568/120586 co-relation queries the response was YES. Maximal size of possible extension queue 1347. Compared 270817 event pairs, 12842 based on Foata normal form. 18/38060 useless extension candidates. Maximal degree in co-relation 129470. Up to 34556 conditions per place. [2024-05-12 13:13:19,980 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 128 selfloop transitions, 27 changer transitions 0/166 dead transitions. [2024-05-12 13:13:19,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 166 transitions, 1382 flow [2024-05-12 13:13:19,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:13:19,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:13:19,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 190 transitions. [2024-05-12 13:13:19,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.536723163841808 [2024-05-12 13:13:19,981 INFO L175 Difference]: Start difference. First operand has 94 places, 122 transitions, 883 flow. Second operand 6 states and 190 transitions. [2024-05-12 13:13:19,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 166 transitions, 1382 flow [2024-05-12 13:13:20,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 166 transitions, 1358 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-05-12 13:13:20,056 INFO L231 Difference]: Finished difference. Result has 99 places, 126 transitions, 971 flow [2024-05-12 13:13:20,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=859, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=971, PETRI_PLACES=99, PETRI_TRANSITIONS=126} [2024-05-12 13:13:20,057 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 32 predicate places. [2024-05-12 13:13:20,057 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 126 transitions, 971 flow [2024-05-12 13:13:20,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 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 13:13:20,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:20,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:20,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-05-12 13:13:20,058 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:13:20,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:20,058 INFO L85 PathProgramCache]: Analyzing trace with hash -668915177, now seen corresponding path program 2 times [2024-05-12 13:13:20,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:20,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346683097] [2024-05-12 13:13:20,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:20,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:20,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:21,005 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 13:13:21,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:21,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346683097] [2024-05-12 13:13:21,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346683097] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:21,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:21,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:13:21,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044301478] [2024-05-12 13:13:21,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:21,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:13:21,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:21,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:13:21,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:13:21,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2024-05-12 13:13:21,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 126 transitions, 971 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 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 13:13:21,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:21,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2024-05-12 13:13:21,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:25,118 INFO L124 PetriNetUnfolderBase]: 26179/39484 cut-off events. [2024-05-12 13:13:25,119 INFO L125 PetriNetUnfolderBase]: For 126833/126833 co-relation queries the response was YES. [2024-05-12 13:13:25,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129844 conditions, 39484 events. 26179/39484 cut-off events. For 126833/126833 co-relation queries the response was YES. Maximal size of possible extension queue 1386. Compared 282922 event pairs, 13748 based on Foata normal form. 3/38574 useless extension candidates. Maximal degree in co-relation 129806. Up to 34654 conditions per place. [2024-05-12 13:13:25,424 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 131 selfloop transitions, 16 changer transitions 0/158 dead transitions. [2024-05-12 13:13:25,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 158 transitions, 1347 flow [2024-05-12 13:13:25,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:13:25,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:13:25,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 179 transitions. [2024-05-12 13:13:25,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5056497175141242 [2024-05-12 13:13:25,426 INFO L175 Difference]: Start difference. First operand has 99 places, 126 transitions, 971 flow. Second operand 6 states and 179 transitions. [2024-05-12 13:13:25,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 158 transitions, 1347 flow [2024-05-12 13:13:25,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 158 transitions, 1284 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-05-12 13:13:25,506 INFO L231 Difference]: Finished difference. Result has 102 places, 126 transitions, 951 flow [2024-05-12 13:13:25,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=951, PETRI_PLACES=102, PETRI_TRANSITIONS=126} [2024-05-12 13:13:25,507 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 35 predicate places. [2024-05-12 13:13:25,507 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 126 transitions, 951 flow [2024-05-12 13:13:25,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 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 13:13:25,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:25,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:25,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-05-12 13:13:25,508 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:13:25,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:25,508 INFO L85 PathProgramCache]: Analyzing trace with hash -343125594, now seen corresponding path program 1 times [2024-05-12 13:13:25,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:25,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128559774] [2024-05-12 13:13:25,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:25,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:25,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:26,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:26,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:26,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128559774] [2024-05-12 13:13:26,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128559774] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:26,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:26,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:13:26,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951859593] [2024-05-12 13:13:26,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:26,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:13:26,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:26,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:13:26,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:13:26,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2024-05-12 13:13:26,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 126 transitions, 951 flow. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 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 13:13:26,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:26,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2024-05-12 13:13:26,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:31,066 INFO L124 PetriNetUnfolderBase]: 27635/40759 cut-off events. [2024-05-12 13:13:31,066 INFO L125 PetriNetUnfolderBase]: For 144618/144627 co-relation queries the response was YES. [2024-05-12 13:13:31,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137698 conditions, 40759 events. 27635/40759 cut-off events. For 144618/144627 co-relation queries the response was YES. Maximal size of possible extension queue 1363. Compared 280355 event pairs, 11202 based on Foata normal form. 30/39861 useless extension candidates. Maximal degree in co-relation 137659. Up to 34869 conditions per place. [2024-05-12 13:13:31,367 INFO L140 encePairwiseOnDemand]: 42/59 looper letters, 164 selfloop transitions, 44 changer transitions 0/219 dead transitions. [2024-05-12 13:13:31,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 219 transitions, 1893 flow [2024-05-12 13:13:31,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:13:31,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:13:31,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 238 transitions. [2024-05-12 13:13:31,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.576271186440678 [2024-05-12 13:13:31,369 INFO L175 Difference]: Start difference. First operand has 102 places, 126 transitions, 951 flow. Second operand 7 states and 238 transitions. [2024-05-12 13:13:31,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 219 transitions, 1893 flow [2024-05-12 13:13:31,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 219 transitions, 1823 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-05-12 13:13:31,453 INFO L231 Difference]: Finished difference. Result has 106 places, 152 transitions, 1256 flow [2024-05-12 13:13:31,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=881, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1256, PETRI_PLACES=106, PETRI_TRANSITIONS=152} [2024-05-12 13:13:31,454 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 39 predicate places. [2024-05-12 13:13:31,454 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 152 transitions, 1256 flow [2024-05-12 13:13:31,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 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 13:13:31,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:31,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:31,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-05-12 13:13:31,455 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:13:31,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:31,455 INFO L85 PathProgramCache]: Analyzing trace with hash 718177920, now seen corresponding path program 2 times [2024-05-12 13:13:31,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:31,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661398686] [2024-05-12 13:13:31,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:31,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:32,507 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 13:13:32,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:32,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661398686] [2024-05-12 13:13:32,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661398686] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:32,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:32,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:13:32,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393481524] [2024-05-12 13:13:32,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:32,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:13:32,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:32,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:13:32,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:13:32,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2024-05-12 13:13:32,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 152 transitions, 1256 flow. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 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 13:13:32,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:32,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2024-05-12 13:13:32,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand