./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix018_power.oepc_pso.oepc_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix018_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix018_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix018_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-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:26:40,026 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:26:40,090 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:26:40,093 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:26:40,093 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:26:40,121 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:26:40,122 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:26:40,122 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:26:40,122 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:26:40,122 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:26:40,123 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:26:40,123 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:26:40,123 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:26:40,123 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:26:40,124 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:26:40,124 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:26:40,124 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:26:40,124 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:26:40,125 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:26:40,125 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:26:40,125 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:26:40,128 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:26:40,128 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:26:40,128 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:26:40,131 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:26:40,131 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:26:40,131 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:26:40,132 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:26:40,132 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:26:40,132 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:26:40,133 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:26:40,133 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:26:40,133 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:26:40,133 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:26:40,133 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:26:40,134 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:26:40,134 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:26:40,134 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:26:40,134 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:26:40,134 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:26:40,134 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:26:40,134 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:26:40,134 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:26:40,134 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:26:40,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:26:40,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:26:40,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:26:40,359 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:26:40,359 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:26:40,360 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix018_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 01:26:41,406 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:26:41,587 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:26:41,587 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix018_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 01:26:41,600 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a48667e8a/bd87578c3e124309b1c7cc721c9396b2/FLAG83ea772f4 [2024-06-28 01:26:41,610 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a48667e8a/bd87578c3e124309b1c7cc721c9396b2 [2024-06-28 01:26:41,611 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:26:41,612 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:26:41,612 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix018_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-28 01:26:41,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:26:41,824 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:26:41,825 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:26:41,825 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:26:41,828 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:26:41,829 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:26:41" (1/2) ... [2024-06-28 01:26:41,829 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66f92539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:26:41, skipping insertion in model container [2024-06-28 01:26:41,829 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:26:41" (1/2) ... [2024-06-28 01:26:41,831 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@55dc7ed7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:26:41, skipping insertion in model container [2024-06-28 01:26:41,831 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:26:41" (2/2) ... [2024-06-28 01:26:41,831 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66f92539 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:26:41, skipping insertion in model container [2024-06-28 01:26:41,831 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:26:41" (2/2) ... [2024-06-28 01:26:41,832 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:26:41,915 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:26:41,916 INFO L97 edCorrectnessWitness]: Location invariant before [L871-L871] ((((((((((((((((((((((! multithreaded || (z == 0 || z == 1)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff0_thd4 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$r_buff1_thd4 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0) [2024-06-28 01:26:41,917 INFO L97 edCorrectnessWitness]: Location invariant before [L869-L869] ((((((((((((((((((((((! multithreaded || (z == 0 || z == 1)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff0_thd4 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$r_buff1_thd4 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0) [2024-06-28 01:26:41,917 INFO L97 edCorrectnessWitness]: Location invariant before [L874-L874] ((((((((((((((((((((((! multithreaded || (z == 0 || z == 1)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff0_thd4 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$r_buff1_thd4 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0) [2024-06-28 01:26:41,917 INFO L97 edCorrectnessWitness]: Location invariant before [L873-L873] ((((((((((((((((((((((! multithreaded || (z == 0 || z == 1)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff0_thd4 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$r_buff1_thd4 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0) [2024-06-28 01:26:41,917 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:26:41,918 INFO L106 edCorrectnessWitness]: ghost_update [L867-L867] multithreaded = 1; [2024-06-28 01:26:41,957 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:26:42,088 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix018_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-06-28 01:26:42,272 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:26:42,279 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:26:42,304 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix018_power.oepc_pso.oepc_rmo.oepc.i[969,982] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:26:42,379 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:26:42,426 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:26:42,427 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:26:42 WrapperNode [2024-06-28 01:26:42,427 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:26:42,427 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:26:42,428 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:26:42,428 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:26:42,433 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:26:42" (1/1) ... [2024-06-28 01:26:42,445 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:26:42" (1/1) ... [2024-06-28 01:26:42,474 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 135 [2024-06-28 01:26:42,475 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:26:42,479 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:26:42,479 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:26:42,479 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:26:42,488 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:26:42" (1/1) ... [2024-06-28 01:26:42,488 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:26:42" (1/1) ... [2024-06-28 01:26:42,491 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:26:42" (1/1) ... [2024-06-28 01:26:42,504 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 01:26:42,514 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:26:42" (1/1) ... [2024-06-28 01:26:42,514 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:26:42" (1/1) ... [2024-06-28 01:26:42,523 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:26:42" (1/1) ... [2024-06-28 01:26:42,524 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:26:42" (1/1) ... [2024-06-28 01:26:42,526 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:26:42" (1/1) ... [2024-06-28 01:26:42,528 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:26:42" (1/1) ... [2024-06-28 01:26:42,531 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:26:42,531 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:26:42,532 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:26:42,532 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:26:42,532 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:26:42" (1/1) ... [2024-06-28 01:26:42,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:26:42,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:26:42,556 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 01:26:42,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 01:26:42,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:26:42,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:26:42,593 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:26:42,594 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:26:42,594 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:26:42,594 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:26:42,594 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:26:42,594 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:26:42,595 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-28 01:26:42,595 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-28 01:26:42,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:26:42,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:26:42,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:26:42,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:26:42,599 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 01:26:42,743 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:26:42,745 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:26:43,072 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:26:43,072 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:26:43,214 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:26:43,214 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:26:43,215 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:26:43 BoogieIcfgContainer [2024-06-28 01:26:43,215 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:26:43,218 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:26:43,218 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:26:43,220 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:26:43,220 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:26:41" (1/4) ... [2024-06-28 01:26:43,221 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67b1e548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:26:43, skipping insertion in model container [2024-06-28 01:26:43,221 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:26:41" (2/4) ... [2024-06-28 01:26:43,221 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67b1e548 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:26:43, skipping insertion in model container [2024-06-28 01:26:43,221 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:26:42" (3/4) ... [2024-06-28 01:26:43,221 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67b1e548 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:26:43, skipping insertion in model container [2024-06-28 01:26:43,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:26:43" (4/4) ... [2024-06-28 01:26:43,222 INFO L112 eAbstractionObserver]: Analyzing ICFG mix018_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 01:26:43,234 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:26:43,235 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-06-28 01:26:43,235 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:26:43,287 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:26:43,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 58 transitions, 132 flow [2024-06-28 01:26:43,344 INFO L124 PetriNetUnfolderBase]: 1/54 cut-off events. [2024-06-28 01:26:43,344 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:26:43,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 54 events. 1/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 90 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2024-06-28 01:26:43,347 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 58 transitions, 132 flow [2024-06-28 01:26:43,352 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 54 transitions, 120 flow [2024-06-28 01:26:43,362 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:26:43,394 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;@9a53977, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:26:43,394 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-06-28 01:26:43,398 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:26:43,398 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:26:43,398 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:26:43,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:43,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:26:43,399 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:26:43,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:43,405 INFO L85 PathProgramCache]: Analyzing trace with hash 380408206, now seen corresponding path program 1 times [2024-06-28 01:26:43,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:43,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869809470] [2024-06-28 01:26:43,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:43,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:43,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:44,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:44,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:44,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869809470] [2024-06-28 01:26:44,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869809470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:44,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:44,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:26:44,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029561614] [2024-06-28 01:26:44,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:44,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:26:44,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:44,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:26:44,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:26:44,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 58 [2024-06-28 01:26:44,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:44,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:44,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 58 [2024-06-28 01:26:44,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:47,514 INFO L124 PetriNetUnfolderBase]: 25098/34488 cut-off events. [2024-06-28 01:26:47,515 INFO L125 PetriNetUnfolderBase]: For 215/215 co-relation queries the response was YES. [2024-06-28 01:26:47,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68243 conditions, 34488 events. 25098/34488 cut-off events. For 215/215 co-relation queries the response was YES. Maximal size of possible extension queue 1199. Compared 214427 event pairs, 16647 based on Foata normal form. 1051/34146 useless extension candidates. Maximal degree in co-relation 68230. Up to 33298 conditions per place. [2024-06-28 01:26:47,815 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 52 selfloop transitions, 6 changer transitions 0/72 dead transitions. [2024-06-28 01:26:47,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 72 transitions, 281 flow [2024-06-28 01:26:47,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:26:47,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:26:47,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 118 transitions. [2024-06-28 01:26:47,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6781609195402298 [2024-06-28 01:26:47,826 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 120 flow. Second operand 3 states and 118 transitions. [2024-06-28 01:26:47,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 72 transitions, 281 flow [2024-06-28 01:26:47,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 72 transitions, 274 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 01:26:47,831 INFO L231 Difference]: Finished difference. Result has 65 places, 58 transitions, 160 flow [2024-06-28 01:26:47,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=65, PETRI_TRANSITIONS=58} [2024-06-28 01:26:47,834 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -1 predicate places. [2024-06-28 01:26:47,835 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 58 transitions, 160 flow [2024-06-28 01:26:47,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:47,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:47,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:26:47,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:26:47,836 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:26:47,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:47,836 INFO L85 PathProgramCache]: Analyzing trace with hash 380409211, now seen corresponding path program 1 times [2024-06-28 01:26:47,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:47,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485277949] [2024-06-28 01:26:47,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:47,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:47,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:47,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:47,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:47,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485277949] [2024-06-28 01:26:47,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485277949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:47,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:47,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:26:47,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183744907] [2024-06-28 01:26:47,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:47,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:26:47,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:47,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:26:47,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:26:47,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 58 [2024-06-28 01:26:47,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 58 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:47,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:47,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 58 [2024-06-28 01:26:47,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:48,712 INFO L124 PetriNetUnfolderBase]: 5320/9065 cut-off events. [2024-06-28 01:26:48,712 INFO L125 PetriNetUnfolderBase]: For 688/688 co-relation queries the response was YES. [2024-06-28 01:26:48,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17478 conditions, 9065 events. 5320/9065 cut-off events. For 688/688 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 70271 event pairs, 3631 based on Foata normal form. 0/8314 useless extension candidates. Maximal degree in co-relation 17466. Up to 6212 conditions per place. [2024-06-28 01:26:48,764 INFO L140 encePairwiseOnDemand]: 55/58 looper letters, 45 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2024-06-28 01:26:48,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 77 transitions, 295 flow [2024-06-28 01:26:48,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:26:48,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:26:48,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 138 transitions. [2024-06-28 01:26:48,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7931034482758621 [2024-06-28 01:26:48,766 INFO L175 Difference]: Start difference. First operand has 65 places, 58 transitions, 160 flow. Second operand 3 states and 138 transitions. [2024-06-28 01:26:48,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 77 transitions, 295 flow [2024-06-28 01:26:48,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 77 transitions, 290 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:26:48,768 INFO L231 Difference]: Finished difference. Result has 65 places, 56 transitions, 152 flow [2024-06-28 01:26:48,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=65, PETRI_TRANSITIONS=56} [2024-06-28 01:26:48,769 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -1 predicate places. [2024-06-28 01:26:48,769 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 56 transitions, 152 flow [2024-06-28 01:26:48,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:48,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:48,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:48,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:26:48,770 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:26:48,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:48,771 INFO L85 PathProgramCache]: Analyzing trace with hash 500090124, now seen corresponding path program 1 times [2024-06-28 01:26:48,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:48,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706020450] [2024-06-28 01:26:48,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:48,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:48,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:49,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:49,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:49,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706020450] [2024-06-28 01:26:49,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706020450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:49,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:49,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:26:49,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600294584] [2024-06-28 01:26:49,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:49,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:26:49,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:49,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:26:49,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:26:49,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 58 [2024-06-28 01:26:49,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:49,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:49,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 58 [2024-06-28 01:26:49,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:51,726 INFO L124 PetriNetUnfolderBase]: 21348/31435 cut-off events. [2024-06-28 01:26:51,726 INFO L125 PetriNetUnfolderBase]: For 7118/7118 co-relation queries the response was YES. [2024-06-28 01:26:51,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67452 conditions, 31435 events. 21348/31435 cut-off events. For 7118/7118 co-relation queries the response was YES. Maximal size of possible extension queue 1134. Compared 214143 event pairs, 15551 based on Foata normal form. 4/30533 useless extension candidates. Maximal degree in co-relation 67439. Up to 28350 conditions per place. [2024-06-28 01:26:51,909 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 64 selfloop transitions, 10 changer transitions 2/90 dead transitions. [2024-06-28 01:26:51,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 90 transitions, 400 flow [2024-06-28 01:26:51,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:26:51,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:26:51,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 148 transitions. [2024-06-28 01:26:51,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6379310344827587 [2024-06-28 01:26:51,914 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 152 flow. Second operand 4 states and 148 transitions. [2024-06-28 01:26:51,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 90 transitions, 400 flow [2024-06-28 01:26:51,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 90 transitions, 392 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:26:51,920 INFO L231 Difference]: Finished difference. Result has 68 places, 64 transitions, 233 flow [2024-06-28 01:26:51,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, 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=233, PETRI_PLACES=68, PETRI_TRANSITIONS=64} [2024-06-28 01:26:51,921 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 2 predicate places. [2024-06-28 01:26:51,922 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 64 transitions, 233 flow [2024-06-28 01:26:51,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:51,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:51,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:51,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:26:51,923 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:26:51,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:51,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1677074489, now seen corresponding path program 1 times [2024-06-28 01:26:51,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:51,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036310883] [2024-06-28 01:26:51,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:51,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:51,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:52,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:52,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:52,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036310883] [2024-06-28 01:26:52,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036310883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:52,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:52,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:26:52,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952153870] [2024-06-28 01:26:52,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:52,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:26:52,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:52,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:26:52,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:26:52,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 58 [2024-06-28 01:26:52,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 64 transitions, 233 flow. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:52,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:52,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 58 [2024-06-28 01:26:52,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:54,875 INFO L124 PetriNetUnfolderBase]: 18581/27841 cut-off events. [2024-06-28 01:26:54,875 INFO L125 PetriNetUnfolderBase]: For 13155/13155 co-relation queries the response was YES. [2024-06-28 01:26:54,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65002 conditions, 27841 events. 18581/27841 cut-off events. For 13155/13155 co-relation queries the response was YES. Maximal size of possible extension queue 1051. Compared 192114 event pairs, 10583 based on Foata normal form. 10/27071 useless extension candidates. Maximal degree in co-relation 64987. Up to 24518 conditions per place. [2024-06-28 01:26:55,056 INFO L140 encePairwiseOnDemand]: 44/58 looper letters, 87 selfloop transitions, 23 changer transitions 0/124 dead transitions. [2024-06-28 01:26:55,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 124 transitions, 653 flow [2024-06-28 01:26:55,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:26:55,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:26:55,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 193 transitions. [2024-06-28 01:26:55,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6655172413793103 [2024-06-28 01:26:55,060 INFO L175 Difference]: Start difference. First operand has 68 places, 64 transitions, 233 flow. Second operand 5 states and 193 transitions. [2024-06-28 01:26:55,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 124 transitions, 653 flow [2024-06-28 01:26:55,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 124 transitions, 638 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-28 01:26:55,065 INFO L231 Difference]: Finished difference. Result has 73 places, 79 transitions, 382 flow [2024-06-28 01:26:55,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=382, PETRI_PLACES=73, PETRI_TRANSITIONS=79} [2024-06-28 01:26:55,065 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 7 predicate places. [2024-06-28 01:26:55,066 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 79 transitions, 382 flow [2024-06-28 01:26:55,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:55,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:55,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:55,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:26:55,066 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:26:55,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:55,067 INFO L85 PathProgramCache]: Analyzing trace with hash -449700725, now seen corresponding path program 1 times [2024-06-28 01:26:55,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:55,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676174996] [2024-06-28 01:26:55,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:55,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:55,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:56,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:56,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:56,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676174996] [2024-06-28 01:26:56,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676174996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:56,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:56,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:26:56,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357796470] [2024-06-28 01:26:56,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:56,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:26:56,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:56,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:26:56,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:26:56,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 58 [2024-06-28 01:26:56,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 79 transitions, 382 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:56,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:56,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 58 [2024-06-28 01:26:56,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:58,927 INFO L124 PetriNetUnfolderBase]: 18658/27972 cut-off events. [2024-06-28 01:26:58,927 INFO L125 PetriNetUnfolderBase]: For 32333/32333 co-relation queries the response was YES. [2024-06-28 01:26:58,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76607 conditions, 27972 events. 18658/27972 cut-off events. For 32333/32333 co-relation queries the response was YES. Maximal size of possible extension queue 1053. Compared 193159 event pairs, 9294 based on Foata normal form. 10/27203 useless extension candidates. Maximal degree in co-relation 76588. Up to 24532 conditions per place. [2024-06-28 01:26:59,083 INFO L140 encePairwiseOnDemand]: 43/58 looper letters, 101 selfloop transitions, 28 changer transitions 0/143 dead transitions. [2024-06-28 01:26:59,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 143 transitions, 866 flow [2024-06-28 01:26:59,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:26:59,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:26:59,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 230 transitions. [2024-06-28 01:26:59,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6609195402298851 [2024-06-28 01:26:59,085 INFO L175 Difference]: Start difference. First operand has 73 places, 79 transitions, 382 flow. Second operand 6 states and 230 transitions. [2024-06-28 01:26:59,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 143 transitions, 866 flow [2024-06-28 01:26:59,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 143 transitions, 854 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-28 01:26:59,095 INFO L231 Difference]: Finished difference. Result has 79 places, 84 transitions, 480 flow [2024-06-28 01:26:59,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=480, PETRI_PLACES=79, PETRI_TRANSITIONS=84} [2024-06-28 01:26:59,096 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 13 predicate places. [2024-06-28 01:26:59,096 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 84 transitions, 480 flow [2024-06-28 01:26:59,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:59,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:59,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:59,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:26:59,097 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:26:59,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:59,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1055819674, now seen corresponding path program 1 times [2024-06-28 01:26:59,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:59,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821414903] [2024-06-28 01:26:59,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:59,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:59,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:00,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:00,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:00,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821414903] [2024-06-28 01:27:00,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821414903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:00,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:00,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:27:00,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164383302] [2024-06-28 01:27:00,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:00,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:27:00,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:00,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:27:00,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:27:00,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 58 [2024-06-28 01:27:00,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 84 transitions, 480 flow. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:00,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:00,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 58 [2024-06-28 01:27:00,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:03,108 INFO L124 PetriNetUnfolderBase]: 19005/28871 cut-off events. [2024-06-28 01:27:03,109 INFO L125 PetriNetUnfolderBase]: For 51702/51708 co-relation queries the response was YES. [2024-06-28 01:27:03,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85866 conditions, 28871 events. 19005/28871 cut-off events. For 51702/51708 co-relation queries the response was YES. Maximal size of possible extension queue 1086. Compared 203093 event pairs, 9018 based on Foata normal form. 41/28151 useless extension candidates. Maximal degree in co-relation 85844. Up to 24478 conditions per place. [2024-06-28 01:27:03,284 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 122 selfloop transitions, 50 changer transitions 0/186 dead transitions. [2024-06-28 01:27:03,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 186 transitions, 1298 flow [2024-06-28 01:27:03,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:27:03,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:27:03,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 273 transitions. [2024-06-28 01:27:03,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6724137931034483 [2024-06-28 01:27:03,286 INFO L175 Difference]: Start difference. First operand has 79 places, 84 transitions, 480 flow. Second operand 7 states and 273 transitions. [2024-06-28 01:27:03,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 186 transitions, 1298 flow [2024-06-28 01:27:03,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 186 transitions, 1228 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 01:27:03,317 INFO L231 Difference]: Finished difference. Result has 84 places, 107 transitions, 778 flow [2024-06-28 01:27:03,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=778, PETRI_PLACES=84, PETRI_TRANSITIONS=107} [2024-06-28 01:27:03,320 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 18 predicate places. [2024-06-28 01:27:03,320 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 107 transitions, 778 flow [2024-06-28 01:27:03,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:03,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:03,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:03,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:27:03,321 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:27:03,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:03,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1347530217, now seen corresponding path program 1 times [2024-06-28 01:27:03,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:03,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94992659] [2024-06-28 01:27:03,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:03,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:04,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:04,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:04,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94992659] [2024-06-28 01:27:04,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94992659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:04,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:04,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:27:04,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096721463] [2024-06-28 01:27:04,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:04,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:27:04,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:04,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:27:04,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:27:04,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-06-28 01:27:04,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 107 transitions, 778 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) [2024-06-28 01:27:04,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:04,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-06-28 01:27:04,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:07,148 INFO L124 PetriNetUnfolderBase]: 21988/33135 cut-off events. [2024-06-28 01:27:07,148 INFO L125 PetriNetUnfolderBase]: For 96654/96654 co-relation queries the response was YES. [2024-06-28 01:27:07,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110323 conditions, 33135 events. 21988/33135 cut-off events. For 96654/96654 co-relation queries the response was YES. Maximal size of possible extension queue 1170. Compared 233868 event pairs, 10920 based on Foata normal form. 6/32367 useless extension candidates. Maximal degree in co-relation 110296. Up to 29213 conditions per place. [2024-06-28 01:27:07,476 INFO L140 encePairwiseOnDemand]: 48/58 looper letters, 103 selfloop transitions, 17 changer transitions 0/132 dead transitions. [2024-06-28 01:27:07,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 132 transitions, 1084 flow [2024-06-28 01:27:07,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:27:07,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:27:07,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 155 transitions. [2024-06-28 01:27:07,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5344827586206896 [2024-06-28 01:27:07,478 INFO L175 Difference]: Start difference. First operand has 84 places, 107 transitions, 778 flow. Second operand 5 states and 155 transitions. [2024-06-28 01:27:07,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 132 transitions, 1084 flow [2024-06-28 01:27:07,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 132 transitions, 1020 flow, removed 32 selfloop flow, removed 0 redundant places. [2024-06-28 01:27:07,550 INFO L231 Difference]: Finished difference. Result has 89 places, 107 transitions, 763 flow [2024-06-28 01:27:07,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=763, PETRI_PLACES=89, PETRI_TRANSITIONS=107} [2024-06-28 01:27:07,551 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 23 predicate places. [2024-06-28 01:27:07,551 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 107 transitions, 763 flow [2024-06-28 01:27:07,551 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) [2024-06-28 01:27:07,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:07,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:07,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:27:07,552 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:27:07,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:07,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1209514163, now seen corresponding path program 1 times [2024-06-28 01:27:07,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:07,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731656907] [2024-06-28 01:27:07,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:07,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:07,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:08,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:08,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:08,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731656907] [2024-06-28 01:27:08,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731656907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:08,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:08,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:27:08,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364161008] [2024-06-28 01:27:08,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:08,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:27:08,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:08,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:27:08,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:27:08,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-06-28 01:27:08,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 107 transitions, 763 flow. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:08,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:08,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-06-28 01:27:08,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand